Authors:
Mitru Daniel, Lucaciu Irina Eugenia, Gheorghe Stefania, Stoica Catalina,
Mitru Daniel, Lucaciu Irina Eugenia, Gheorghe Stefania, Stoica Catalina,
Banciu Alina Roxana, Ionescu Lucian, Ionica Daniela Liliana, Nechifor Gheorghe
Conference: International Symposium “The Environment and the Industry”
Date: 26-27 September 2019
Location: Bucharest, Romania
Published: 2019
Keywords:
Activated sludge
Linear alkybenzene sulfonates(LAS)
Nonylphenol ethoxylates (NPE)
Surfactants
Abstract:
The surfactants are one of the most commonly used class of chemicals (15billions tons per year) in various applications: household cleaning, personal care products and industry. Anionic surfactants represent the major class of surfactants used in detergents, the predominant groups being linear alkylbenzene sulphonates (LAS) and linear alkyl suphates (AS). Non-ionic surfactants are used in large quantities in domestic and commercial products, e.g. cleaning solutions. The most widely used non-ionic surfactants are alkylphenol ethoxylates (APEs) and the most used commercial APEs are octylphenol ethoxylates (OPEs) and nonylphenol ethoxylates (NPEs). Because of the large utilization of surfactants, they can accumulate in the domestic and industrial wastewaters, affecting treatment plants (WWTP) due the inhibition off activated sludge. As a result, surfactants could affect the water bodies quality through discharge of WWTPs’ effluents or soil quality through various modes of sludge disposal.