CLER_Review_Supp2006
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EXECUTIVE SUMMARY
EXECUTIVE SUMMARY Revised September 2014 The Council for LAB/LAS Environmental Research (CLER) is an organization of scientists and technical specialists representing member companies CEPSA Quimica, S.A. (Madrid), Huntsman Corporation (Houston), Quimica Venoco (Venezuela) and Sasol North America…
LAS BIODEGRADATION AND REMOVAL IN ONSITE WASTEWATER TREATMENT
In many parts of the world, municipal wastewater treatment facilities are not readily available and wastewater from households is discharged to septic tanks (onsite systems) for treatment. In the U.S., about 20-25 percent of the households, usually at rural locations, utilize onsite treatment of…
LAS BIODEGRADATION AND SAFETY IN RIVERS AND STREAMS
Revised August 2014 Field studies, which monitor the real-world behavior of a substance, indicate that linear alkylbenzene sulfonate (LAS) biodegrades rapidly and completely and does not accumulate in the environment. Extensive aquatic toxicity and risk assessment data from more than 50 years of…
LAS BIODEGRADATION AND SAFETY IN SEDIMENTS
Revised August 2014 Trace amounts of linear alkylbenzene sulfonate (LAS) present after wastewater treatment adsorb onto sediments near treatment plants and subsequently biodegrade. This removal process contributes to high safety margins. Studies conducted on river sediment samples taken near…
LAS BIODEGRADATION AND SAFETY IN SLUDGE AND SOILS
Updated August 2014 Biosolids, commonly called sewage “sludge,” are produced during wastewater treatment, especially in activated sludge treatment plants, the most commonly used type of wastewater treatment plants (WTP) in North America and Europe. Linear alkylbenzene sulfonate (LAS) can…
LAS BIODEGRADATION AND SAFETY IN UNTREATED WASTEWATER DISPOSAL
August 2014 Untreated wastewater discharge is a common occurrence in many parts of the world, and yet there is very little data to form an environmental risk assessment. Conducting widespread monitoring studies of these types of locations on a global basis would be a tremendously ambitious and…
BIODEGRADATION AND SAFETY OF COMMERCIAL LAS
Commercial linear alkylbenzene sulfonate (LAS) consists of 85 to 98% LAS and three other constituents: linear alkylbenzene (LAB), dialkyltetralin sulfonate (DATS) and methyl branched alkylbenzene sulfonate (isoLAS). Like LAS, the three other constituents undergo biodegradation and are…