Authors:
Tamara Leah
Conference: International Symposium “The Environment and the Industry”
Date: October 13-14, 2016
Location: Bucharest, Romania
Published: 2016
Keywords:
Arable
Chemical composition
Gray soil
Moldova
Sesquioxides

Abstract:

As a result of agricultural use of forest gray soils as arable land, instead fallow horizon Ao and
partly horizons A1 and A2 are formed arable Ap horizon. Prolonged use of gray soils in
agriculture led to their degradation, manifested by decreasing of organic matter due to its
mechanical destruction of valuable agronomic structure in the soil tillage process. Gray forest
soils are characterized by a clear differentiation of total chemical composition in the genetic
horizons. The mineral part of typical gray soil is composed of silicates and sesquioxides. In the
composition of researched soils is predominate silica compounds (SiO2), which make up 70-
77%. In the arable gray soil the SiO2 content is higher by 3.56% in humiferous soil layer than
in virgin forest gray soil. The vertical distribution of SiO2 in the soil profile has an accumulative
characteristic in humiferous horizon and partial in the parental rock. Share of oxides of Mg, Ti,
S, P, K and Na constitute an insignificant part. According relatively content in the gray soils the
oxides are located: SiO2→ Al2O3→ Fe2O3→ K2O→ Na2O→ CaO→ MgO→ TiO2→ SO3→
MnO→ P2O5. Utilization of forest gray soil in agriculture led to changes in their chemical
composition in the upper humiferous horizon and intensification of eluvial process in them. To
improve fertility of arable gray soils is necessary to increase organic matter in arable layer, to
remediate structure and combat erosion process.

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Authors:
Alina-Maria Anghelache, Lidia Kim, Adriana Cuciureanu, Gheorghe Batrinescu, Luoana
Florentina Pascu
Conference: International Symposium “The Environment and the Industry”
Date: October 13-14, 2016
Location: Bucharest, Romania
Published: 2016
Keywords:
Contamination
Heavy metals
ICP-MS
Roadside soil
Romania
Abstract:
In order to assess the impact of car emissions on the soil, studies are required to monitor the
concentation heavy metals from roadside soils. In this paper, we report an extensive survey
of the roadside soils contamination with heavy metal along the Sun Highway (A2) which
connects Bucharest to Constanta. The contents of heavy metals (Cd, Cu, Ni, Pb, Zn, As)
were assessed by inductively coupled plasma mass spectrometry (ICP-MS). The car
pollution was also studied to link it with the concentrations and distributions of heavy metals
in the roadside soils.


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Authors:
Margarita Filipova, Ivanka Zheleva, Petar Rusev, Antoaneta Stefanova, Irina Tcvetanova
Conference: International Symposium “The Environment and the Industry”
Date: October 13-14, 2016
Location: Bucharest, Romania
Published: 2016
Keywords:
Air pollution
Pollutants
Monitoring system
Abstract:
Air pollution has a significant impact on human health, environment and economy. Air pollution
comes from a variety of sources including the industry, transport and agriculture. Every day, air
pollution causes respiratory and cardiovascular diseases. The pollution causes damages of ragile
ecosystems and biodiversity. It also reduces the yield of crops and commercial forest yields.
Therefore, it is vital to take action both at home and together with other countries – across borders
and sectors.
Air pollution by sulfur dioxide, nitrogen oxides, ammonia, non-methane volatile organic
compounds and particulate matter create the most serious problems for human health and they
are the main reason for the deterioration of ecosystems. These air pollutants in the border area
Bulgaria – Rumania are presented and analyzed in the present paper.


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Authors:
Elena Elisabeta Manea, Diana Robescu, Elena Presura
Conference: International Symposium “The Environment and the Industry”
Date: October 13-14, 2016
Location: Bucharest, Romania
Published: 2016
Keywords:
Carbon
Footprint
Wastewater
Abstract:
A wastewater treatment plant’s carbon footprint is represented by the amounts associated with collection,
treatment and final disposal of treated wastewater and sludge. The importance of evaluating the carbon
footprint in wastewater treatment facilities consists in the fact that it’s reduction is directly related to energy
efficiency measures and plant operation improvements. Considering the fact that, at a national scale,
there is a lack in methodologies and solutions for evaluating wastewater treatment plants’ carbon footprint,
the main international methodologies and tools were studied and the paper presents the main parameters
that have to be taken into account during evaluations, as well as the weak and strong points in the studied
methodologies.


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Authors:
Marius Bumbac, Cristina Mihaela Nicolescu, Anca Irina Gheboianu, Radu Lucian Olteanu, Ana Maria Hossu, Tanta Setnescu
Conference: International Symposium “The Environment and the Industry”
Date: October 13-14, 2016
Location: Bucharest, Romania
Published: 2016
Keywords:
Natural zeolites
Soil
Ammonium exchange capacity
Fertilization
Abstract:
Natural zeolites are crystalline hydrated aluminosilicates formed by the deposition of
volcanic ash in lakes with salted water. They are characterized by their ability to lose and gain
water reversibly and to exchange some of the constituents without changing their structure.
These properties recommend them as useful additives for agricultural soils as buffer matrix for
the process of nutrients translocation.
Present study aims to evaluate the ammonium exchange capacity (AEC) of treated and
untreated soils with natural zeolites as an indicator of quality soil improvement. The zeolites
used in this study (with a content of approx. 60% clinoptilolite) were purchased from Cemacom,
the exploiting company of volcanic tuff from Zalau, Salaj County. The soil samples were
collected at various time intervals during one year. Furthermore, we collecteded soil samples
from unprotected and protected (greenhouses) sources where soil had different degree of
organic fertilization in order to obtain information on the effect of zeolites addition on AEC.


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Authors:
Zuzana Poórová, Zuzana Vranayová
Conference: International Symposium “The Environment and the Industry”
Date: October 13-14, 2016
Location: Bucharest, Romania
Published: 2016
Keywords:
Change in time
Different sedum type
Green roof
Abstract:
There is something very idealistic about the odea of putting a garden on your roof.This article
is about putting a green roof on even something more funnier, the dog house. The act of
greenering part of nature in past, building in present is very popular these days. The idea of
this article is to show the change of vegetation used on green roof of the doghouse. The article
also presents weathes conditions during theperiod of the observation.


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Authors:
E. Radu, F. Marinescu, I. Savin, M. Popa, G. Pîrcălăbioru, M. Bădic, C. Chifiriuc
Conference: International Symposium “The Environment and the Industry”
Date: October 13-14, 2016
Location: Bucharest, Romania
Published: 2016
Keywords:
Antibiotic susceptibility
Bacteria
Electromagnetic field
Wastewater
Abstract:
The wastewater treatment plants are considered to be hotspots for antibiotic resistance
selection, transfer and dissemination. Wastewater offers favorable conditions for the
development of antibiotic resistant bacteria because it contains high amounts of organic
matter, favoring the rapid multiplication of microbial cells and the development of biofilms in
which microbial cells are in close proximity, the presence of pollutants (pesticides, heavy
metals, antibiotics) acting as selective pressure agents for resistance.
The aim of this paper is to investigate how the antibiotics susceptibility profiles of some
microbial strains isolated from wastewater are influenced by electromagnetic fields.
A number of 10 bacterial strains isolated from wastewater (E. coli, Salmonella sp.,
Enterobacter sp., Enterococcus sp., Citrobacter sp., Klebsiella sp.) were exposed to an
electromagnetic field (50Hz electric field at different voltages) for 24 hours, at 37°C. Thereafter,
the antibiotic susceptibility testing was performed for both treated and control strains, by disk
diffusion method, according to CLSI 2016.
The obtained results proved that the electromagnetic field induced in some cases a decrease
of the growth inhibition diameters such as penicillins, cephalosporins, aminoglycosides and
vancomycin, while in other cases an increase of bacterial strains susceptibility to the tested
antibiotics.
These preliminary results demonstrate that the electromagnetic filed in addition with other
selective factors which are present in the wastewaters could modulate the environmental
reservoir of antibiotic resistance and influence the frequency of the selection of resistant
bacteria and the magnitude of the potential risk of dissemination into the environment and of
contamination of animals and humans.


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Authors:
E. Radu, F. Marinescu, I. Savin, C.M. Kamerzan (Saviuc), M. Bădic, C. Chifiriuc
Conference: International Symposium “The Environment and the Industry”
Date: October 13-14, 2016
Location: Bucharest, Romania
Published: 2016
Keywords:
Bacteria
Electromagnetic field
Flow-cytometry
Fluorescent dyes
Wastewater
Abstract:
Flow cytometry represents an important tool in environmental biology, and especially in cellular
biology, through its ability to distinguish among different physiological states (viable, latent and
non-viable). Flow cytometry combined with fluorescent markers, such as propidium iodide and
ethidium bromide allows to perform rapid measurements on individual cells and also
simultaneous measurements of multiple cellular parameters, both structural and functional.
The aim of this paper was to investigate the influence of the electromagnetic field on the
morpho-physiological parameters of some bacterial strains cells isolated from wastewater,
assessed through flow cytometry. In this respect, a number of 10 bacterial strains isolated from
wastewater (E. coli, Salmonella sp., Enterobacter sp., Citrobacter sp., Klebsiella sp. and
Enterococcus sp.) were exposed to an electromagnetic field (50Hz electric field at different
voltages) for 24 hours, at 37°C. Both samples, the ones exposed to electromagnetic field and
blank samples (unexposed) were assessed by flow cytometry technique. Two possible
mechanism of action have been tracked, i.e. the efflux pumps activity (fluorescence marker Ethidium Bromide) and permeabilisation of cellular layers (fluorescence marker – Propidium
Iodide). Both mechanisms of action have been identified, from slightly to significant
modifications, as compared to untreated controls, quantified as ΔMFI (median of fluorescence
intensity). Conclusion: Our results suggest that flow cytometry could be used for the real-time
evaluation of the influence of different electromagnetic fields on the aquatic microbiota, the
obtained results being of great interest for the development of technological solution with
increased efficiency in the (waste)water treatment.


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Authors:
Adriana Cuciureanu, Bogdan Stanescu, Lidia Kim
Conference: International Symposium “The Environment and the Industry”
Date: October 13-14, 2016
Location: Bucharest, Romania
Published: 2016
Keywords:
Areas
Assessment
Pollution
Proximity
Wastewater treatment plants
Abstract:
Among the many environmental problems facing the society one of the most important is
undoubtedly a municipal wastewater treatment. Municipal wastewater treatment plant removes
the pollutants from urban wastewater composed of a mixture of domestic wastewater or
domestic wastewater mixed with industrial wastewater and / or pluvial waters runoff.
Wastewater treatment is beneficial by solving a series of problems that affect the environment
but in some cases, contributes to the generating an environmental impact near the sites,
considering that policy instruments are improperly applied. The paper presents the results of
investigations carried on the quality of soil and water in the areas surrounding of the two
municipal wastewater treatment plants, chosen as case studies, from different regions of the
country. For those have been achieved diagrams representing the state of pollution in the
selected areas. The impact assessment induced in the vicinity of the activities carried out in
sewage treatment plants was achieved by interpreting the results of investigations in
compliance with specific legislation


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Authors:
Marius Simion, Gabriela Paun, Aurelia Meghea, Jianzhong Ma, Fan Zhang
Conference: International Symposium “The Environment and the Industry”
Date: October 13-14, 2016
Location: Bucharest, Romania
Published: 2016
Keywords:
Bola
Surfactants
Casein
Membranes
Dyes
Abstract:
The influence of a classic surfactant: palmitoyl-glycylglycine and bola amphiphilic: bis[2-
butyl(sodium bis-thioacetate) sodium dicarboxylate 1,10 decanediyl ester] upon the casein
membrane preparation and separation technologies for removing organic pollutants (dyes)
was studied by: UV-VIS and FT/IR-ATR spectroscopy, dynamic light scattering, optical and
scanning electron microscopy, contact angle, microbiological tests and the separation rates.
The membranes were produced by a casting-solvent evaporation technique. The casein
powder was dissolved in a water- acetic acid (75:25 v/v) solution with and without plasticizer:
glycerol and surfactant (classic or bola), constant continuous stirring for 6-8 hrs. at 40ºC, then
degassed the solution for 2 hrs. The solution was poured and afterwards maintained in the
oven at 40-50°C for 8-12 hrs. Membranes were obtained with different surfactants which
influenced the separation properties of membranes.
Ecological membranes are obtained from a biodegradable biopolymer and can be used
successfully in removing dyes from wastewaters.


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Authors:
Irina Catianis, Iulian Pojar, Albert Scrieciu, Dumitru Grosu, Ana Bianca Pavel
Conference: International Symposium “The Environment and the Industry”
Date: October 13-14, 2016
Location: Bucharest, Romania
Published: 2016
Keywords:
Environment
Physical-chemical
Sediments
Surface water
Water quality
Abstract:
The deltaic aquatic systems are of significant importance, being the interface between the
particular geographical environments and a much elaborated complex of ecosystems and
biodiversity, the characteristics that confers the uniqueness of the Danube Delta territory. Due
to natural and human-related pressures to which Danube Delta it is subject, it becomes
imperative to diagnose and evaluate the quality of the environmental status in relation to the
condition of the water and sediment characteristics. This paper aims to assess the preliminary
environmental quality status (water and sediment) in three different aquatic systems situated
in the Danube Delta edifice. A research survey was focused on specific sampling field
activities, subsequent laboratory analysis, data processing and basic findings. In this sense,
26 water samples, 20 surficial sediment samples and 3 short cores were collected during May
2016, aiming to estimate the water-physical-chemical features and the lithological
characteristics of the recent sediments. In water, the environmental indicators agreed generally
with environmental standards. In sediments, the percentage distribution of the physical
parameters varied according to the specific local environmental conditions of the investigated
perimeters. The main findings emphasize the role of the local current conditions of the
investigated lakes, sampling sites, seasonal changes in the water budget through hydrological
network etc., which influences the water and sediment conventional variables. In conclusion,
this study report satisfactory water quality conditions of the investigated lakes. As regards the
sediments, the specific environmental conditions are the main factors that control the influx of
allochthonous or autochthonous material.


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Authors:
Valeria Nicorescu, Smaranda Masu, Ladislau Andres, Maria Popa
Conference: International Symposium “The Environment and the Industry”
Date: October 13-14, 2016
Location: Bucharest, Romania
Published: 2016
Keywords:
Alternative energy sources
Ecological phytostabilization
Fly ash
Salix spp.
Abstract:
In this study, we followed a strategy for vegetation fly ash dumps. For this purpose Salix spp. was used.
This plant was chosen deliberately in order to form, in time, a stable and health ecosystem. The resulting
biomass can be used as a renewable energy source. The experiment was performed in situ, in a delimited
compartment, from a power plant fly ash dump. Salix spp. cultures were monitored for 18 months on soils
fertilized with 25 t/ha sewage sludge anaerobically stabilized. From experimental studies, it was found that
the species Salix. spp. developed similar to a culture performed on unpolluted land. In the Salix. spp.
burning strains ash, it was found no accumulation of Pb and Cd. Burning Salix spp. ash included Cr, Ni
and Cubetween 10 – 30 mg/kg dried matter; Mn and Fe between 178- 313 mg/kg dried matter. Thus, by
using species Salix spp. for phytostabilization, fly ash dumps can be made ecological, restoration of
ecosystems and landscape and obtaining alternative energy.


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Authors:
Laurentiu Razvan Dinu, Ioan Balaiu , Ionut Cristea, Viorel Ion Patroescu, Cristiana Cosma,
Lucian Alexandru Constantin, Valeriu R. Badescu, Mihaela Alexie
Conference: International Symposium “The Environment and the Industry”
Date: October 13-14, 2016
Location: Bucharest, Romania
Published: 2016
Keywords:
Aluminium
Manganese
Mine water
Recovery
Abstract:
Mine water or rock drainage is a source of pollution for Romanian as well as for mining sites all around the
world. Rock drainage is generated as a result of the weathering of the sulphidic minerals from which metal
ions are leached. The metal ions are the main polluting species existing in the mine water, but may also
be seen as a resource that is wasted. However, the recovery is seldom applied, as it is not feasible due to
complex chemical matrix. Some types of mine water are more appropriate for the resource recovery, the
best known case being copper reach streams. Here we show some attractive results suggesting that the
recovery of aluminium, but also of manganese would be feasible practices for particular mine water
categories and for distinct utilizations: mine water treatment and high purity resource for metallurgy,
respectively.


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Authors:
Valeriu Danciulescu, Elena Bucur, Mihai Bratu, Andrei Vasile, Mihaela Petrescu, Raluca
Diodiu, Gheorghita Tanase
Conference: International Symposium “The Environment and the Industry”
Date: October 13-14, 2016
Location: Bucharest, Romania
Published: 2016
Keywords:
Emissions
Environment
Greenhouse gases
Livestock
Abstract:
In the livestock sector, the livestock activity involves also an air pollution with greenhouse gases,
the main pollutants being methane, carbon dioxide and nitrogen protoxide. Depending on the
farming system, the animal breed, the food supplied to the animals, and the manure management,
various concentrations of gases with greenhouse effect may appear in the gaseous emissions.
Emissions of gaseous pollutants from buildings where the animals are kept can pollute the
atmosphere and can also affect the health of the farm workers. The natural ventilation of the
stables has a major influence on the difficulty of determining the pollutant concentrations in the
gaseous emissions, due to the inhomogeneity of the gas flow and the large variations in the
pollutant concentrations at different points that are caused by the speed of the air movement
through the venting holes and pollutant dispersion inside the building. This study presents the
results obtained in a series of measurements of the levels of greenhouse gases at a dairy farm
stable with natural ventilation. The equipment used for measurement was a portable gas
chromatograph, Varian CP 4900. During the measurements, all the animals have been in the
stable (they have not been taken to the pasture during that time).


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Authors:
Mihaela Petrescu, Elena Bucur, Andrei Vasile, Raluca Diodiu, Gabriela Geanina Vasile,
Valeriu Danciulescu, Mihai Bratu, Gheorghita Tanase
Conference: International Symposium “The Environment and the Industry”
Date: October 13-14, 2016
Location: Bucharest, Romania
Published: 2016
Keywords:
Atmospheric deposition
Chemical speciation
Dry deposition
Abstract:
Atmospheric deposition means the total mass of pollutants which is transferred from the atmosphere to
surfaces (e.g. soil, vegetation, water, buildings, etc.) in a given area within a given time. Is considered to
be a major process that removes pollutants from the atmosphere and an important source of nutrients and
contaminants for ecosystems. Trace elements, especially toxic metals deposited on plants and into soil or
water, can cause substantial damage to the environment and human health due to their transfer and
accumulation in food chains.
This study aimed to determine the amount and the composition of dry deposition in a residential area in
Bucharest, organized in summer of 2016, according toDirective 2004/107/EC transposed into Romanian
legislation by Law No. 104/2011 regarding the ambient air quality.
The dry deposition samples were collected in accordance with SR EN 15841 -2010 Standard.
The major elements ( Ca2+, K+, Mg2+) and trace metals (Zn, Fe, Al, Ni, Mn, Cr, Cu, Pb and Cd) were
determined by atomic absorption spectrometry equipped with a in graphite furnace and inductively coupled
plasma optical emission spectrometry (ICP-OES), after acid digestion.
Al and Fe were recorded as the dominant metallic elementsin dry deposition followed by Zn, Ni, Cu, Pb,
and Cr. This study suggests that earth crust and anthropogenic activities such as motor vehicles were the
main sources of dust fall in the study area.


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Authors:
Mihai Bratu, Ovidiu Vasile, Elena Bucur, Valeriu Danciulescu, Mihaela Petrescu
Conference: International Symposium “The Environment and the Industry”
Date: October 13-14, 2016
Location: Bucharest, Romania
Published: 2016
Keywords:
Noise
Mechanical vibration
Acoustic power
Directivity factor
Abstract:
Economic development brings environmental concerns in general and in particular regarding the
protection against the aggression of external factors on humans, among which noise and
vibration. Noise is usually defined as a sound or the amount of unwanted sounds, a by-product
of daily activity. Environment vibrations that human body is exposed to may have different causes:
construction machinery, heavy equipment and electric hand tools. Whole human body vibrations
usually occur during transport, but can be found in other places in the course of industrial
processes. Regardless of industrial activity that cause them, vibrations acts on the human body
and this can cause discomfort to the operator. Wear of the components of industrial devices
influences both noise and mechanical vibration levels. The paper presents correlations occurring
between noise and mechanical vibrations emitted by the engine of a car depending on the number
of engine revs. For a broader characterization of emission, acoustic power and directivity factor
are calculated.


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Authors:
Mona Barbu, Agnes Serbanescu, Ileana Nicolescu, Elena Bucur
Conference: International Symposium “The Environment and the Industry”
Date: October 13-14, 2016
Location: Bucharest, Romania
Published: 2016
Keywords:
Laboratory mill
Samples homogeneity
Solid waste
Waste composition
Abstract:
The paper presents the influence of solid waste laboratory samples homogeneity on the
determinations quality of calorific value and carbon content.
Laboratory tests were conducted for a sample of mixed solid wastes (biomass, textile, plastic).
The waste laboratory sample was prepared for physico-chemical characterisation by using basic
methods, mass and particle size-reduction of components. Particle size-reduction of components
was carried out using two laboratory mills: Retsch Rotor Beater Mill SR 300, and Retsch Vibratory
Disc Mill RS 200. Laboratory sample was prepared in two versions. In the first version (V1)
particles size reduction took place by passing a 2 mm sieve through the rotor beater mill Retsch
SR 300. The plastic component of the waste was not fully integrated into the sample. In the
second version (V2) the waste sample obtained in the first version was first pulverized in the
Retsch Vibratory Mill RS 200, followed by a comminution of the particles to diameters passing a
0,5 mm sieve through the Rotor Beater Mill Retsch SR 300. In the second version the sample
was visibly homogeneous.
Laboratory sample homogeneity influence was highlighted by determining calorific value and
carbon content of the waste sample prepared in the two versions.
Following laboratory tests the results for carbon content and calorific value were within the
repeatability limits imposed by the standardized methods for the second laboratory sample
version.


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Authors:
Iuliana Paun, Liliana Valeria Cruceru, Florentina Laura Chiriac, Marcela Niculescu, Gabriela
Geanina Vasile, Nicoleta Mirela Marin
Conference: International Symposium “The Environment and the Industry”
Date: October 13-14, 2016
Location: Bucharest, Romania
Published: 2016
Keywords:
Drinking water
Surface water
Water quality
Water quality index
Abstract:
Water quality is assessed through the biological, physical and chemical parameters. The limits of
these parameters that are harmful to human health have been established at national or
international level (WHO, EPA, MECC) by various laws, regulations, normative. An efficient and
simplified to express the quality of water for consumption is given by the water quality index. It
reflects the quality of water in a single value by comparing data obtained from the investigation of
a number of physico-chemical and bacteriological parameters with existing limits. This number is
placed on a relative scale to justify the quality of water in categories ranging from very poor to
excellent. In this study are discussed various water quality indices used to assess the quality of
drinking water (surface water). National and international agencies involved in assessing water
quality and pollution control defines different quality criteria used for drinking water which is why
there are many water quality specific indices for each region or area. In this context, it will present
a comparative study of the most important quality indices used to assess water quality worldwide.


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Authors:
Valeriu Robert Badescu, Andrei Niculae
Conference: International Symposium “The Environment and the Industry”
Date: October 13-14, 2016
Location: Bucharest, Romania
Published: 2016
Keywords:
Stripping voltammetry
Iron speciation
HMDE
Abstract:
The paper describes the development and optimization of an analytical technique based on
stripping voltammetry for iron determination in drinking water. The method is based on AdSV
technique and HMDE electrode. Along with the complexing agent, the catechol, a pH buffering
phosphate solution (pH 7) is added. The reference electrode is Ag/AgCl/KCl. The principle of the
method is the following: iron complexation by the catechol, adsorption of the complex on the drop
of the electrode followed by the stripping stage and practical resolubilization of the complex. Two
concentration ranges were tested: from 10 to 50µg/L and between 25 and 150µg/L. After
calibration curves were plotted, real drinking water samples enriched with iron standard solution
were analysed.
Laboratory test results indicate a very good recovery rate for the analytical trials performed
(100.44%, 104.07%, 103.49%). However, the average value of the recovery rate following all
aditions and replicates – the precision grade is 102.66%. The correlation factor between the two
curves was 0.9936 for the interval of 10- 50µg/l and 0.9989 for the interval of 25-150µg/L. The
optimised method can be easily applied in case of drinking water resources both surface and
underground water.


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Authors:
Mirela Alina Constantin, Gheorghe Batrinescu, Ionut Cristea, Valeriu Robert Badescu
Conference: International Symposium “The Environment and the Industry”
Date: October 13-14, 2016
Location: Bucharest, Romania
Published: 2016
Keywords:
Bottom ash
Filter ash
Medical waste
Waste treatment
Abstract:
Waste represents one of the most important topics in the field of environmental protection due to induced
pollution on all environmental media (water, air and soil). From the three known categories of waste (inert,
non-hazardous, and hazardous), the last one rises serious issues from the point of view of technical and
financial management. A special category of hazardous waste according to national regulations is
represented by medical waste that cannot be disposed without adequate treatment. Experimental results
obtained on treatment of bottom and filter ashes resulted from incineration of medical waste are presented.
Chemical analysis of waste samples and corresponding leachates has revealed that values of many
indicators exceed maximum admissible values for storage on hazardous waste deposits. Two variants of
technological flows were developed for treatment of bottom and filter ash waste: washing under mixing
with acid solution followed by filtration of obtained mixtures and incorporation of waste in “concrete” type
matrices through mixing with sand and cement. These two technological flows variants had as final result
waste types for which leaching indicators values were situated below the legal norms for storage on nonhazardous waste deposits.


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Authors:
Violeta Dediu, Lidia Kim, Cristiana Cosma, Doina Guta
Conference: International Symposium “The Environment and the Industry”
Date: October 13-14, 2016
Location: Bucharest, Romania
Published: 2016
Keywords:
Chemical modifiers
Graphite furnace atomic absorption spectrometry
Sediment
Soil
Abstract:
The effectiveness of some chemical matrix modifiers for the determination of lead, chromium,
selenium and arsenic in sediments and soils by Zeeman electrothermal atomic absorption
spectrometry have been evaluated. The addition of certain chemical modifiers decreases the
volatility of the analyte element, preventing its loss during pyrolysis step while increasing the
volatility of matrix components promoting a better separation also allows a higher pretreatment
temperature for better separation between analyte and matrix. Pyrolysis and atomization
temperatures, characteristic masses and detection limits of analytes in dissolved samples with
and without modifiers have been compared. The method was validated by analysing certified
reference lake sediment and soil materials.


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Authors:
Elena Elisabeta Manea
Conference: International Symposium “The Environment and the Industry”
Date: October 13-14, 2016
Location: Bucharest, Romania
Published: 2016
Keywords:
ASM
Simulation
Wastewater
WEST
Abstract:
Predicting wastewater treatment plant’s efficiency during extreme influent variations can be made by using
modeling and simulation tools. The studied wastewater treatment plant’s biological stage consists in two
identical lines with biological phosphorous removal and nitrification-denitrification. The influent and effluent
quality parameters were monitored for a plant with advanced biological wastewater treatment stage.
Different fractionation models were considered and the simulations were developed using WEST software.
ASM1temp and ASM3temp models were used, both being based on IWA’s Activated Sludge Models and
extended with temperature corrections. Compliance with the experimental data obtained from the
wastewater treatment plant was met after the model’s calibration.


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Authors:
Antoaneta Stefanova
Conference: International Symposium “The Environment and the Industry”
Date: October 13-14, 2016
Location: Bucharest, Romania
Published: 2016
Keywords:
Ambient air
Pollutant
Environmental impact assessment
Inventory
Abstract:
The inventory methods used for pollutants in the Republic of Bulgaria for the purposes of the EIA
reports are: Updated uniform inventory methodology for emissions of harmful substances in the
air (Order № 165/20.02.2013 of MEW), EMEP/EEA Air pollutant emission inventory guidebook of
the EEA and AP-42, Compilation of Air Pollutant Emission Factors of EPA – U.S. Environmental
Protection Agency. The choice of methods used for the assessment is made by the independent
expert who works on it. As a result of using different inventory methods for pollutants in ambient
air in similar installations (sites) the recorded values for the amounts of emitted pollutants are
different. The purpose of the study is to make a comparison between the estimated amounts of
the same pollutants in similar sites /performing one and the same activity/ by using different
methods in the approved EIA reports and register the deviations; to assess the need of
establishing a uniform methodology for assessing the Ambient air component in EIA reports,
reflecting the essence of the planned investment – new investment or expansion of an existing
site.


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