Two 1-L porous pot (65 μ stainless steel mesh) reactors were fed synthetic wastewater with a COD of 200 mg/L including 2 mg/L linear alkyl benzene sulfonate (LAS) to evaluate the influence of specific operating conditions (i.e, hydraulic retention time, HRT, and solids retention time, SRT) on the measured rate of LAS biodegradation. The reactors were operated in parallel under a constant SRT of...

With “defossilisation” at the core of many sustainability goals within industry, exploration new synthesis routes to chemicals has never been more vital. As part their Clean Futures initiative, Unilever Home Care published Carbon Rainbow, a scheme which categorizes chemical sources into different “colors,” depending on derivation. One Rainbow is phase out non-renewable “black” carbon from suppl...

Linear alkylbenzene sulfonates (LAS) can be found in high concentrations in sewage sludge and, hence, may enter the soil compartment as a result of sludge application. Here, LAS may pose a risk for soil-dwelling organisms. In the present probabilistic risk assessment, statistical extrapolation has been used to assess the risk of LAS to soil ecosystems. By use of a log-normal distribution model,...

In the present work, the influence of different physicochemical characteristics on the distribution of anionic detergents, linear alkylbenzene sulfonates (LAS), was studied. Surface and bottom water samples were collected from eight different sites from a small bay near the main sewage discharge of Alexandria City (El-Max Bay). The results showed great variations in the concentrations, as a fun...

Most commercial household cleaning agents and personal care products contain the anionic surfactant linear alkylbenzene sulphonates (LAS) as the active compound. After their use they are discharged, theoretically after adequate wastewater treatment, into receiving waters finally reaching estuaries and coastal waters. Laboratory toxicity tests are useful tools in determining at which concentrati...

In this study, structural changes of liver and gills the crucian carp after one-month exposure to different concentrations alkylbenzene sulfonate (AS) surfactants were evaluated by pathological sections organs. The results indicated that effect AS on was mainly reflected in nucleus swelling, cell membrane rupture, blurring boundaries, appearance vacuoles cytoplasm. Meanwhile, occurs gill filame...