published: Accelerated decrease in surfactant concentration in the water of a microcosm in the presence of plants: Innovations for phytotechnology. Water Treatment , Water Quality , Phytoremediation , New Technology , Pollution Control , Surface Tension , Water Purification , water safety , Water Sustainability , macrophyte , Biotechnology , aquatic , ecological , Innovations , Sodium Dodecylsulphate , Moscow University
ABSTRACT
A new contribution to the scientific basis of phytoremediation and phytotechnology for water treatment;
AQUATIC PLANT HELP REMOVE A POLLUTANT (SYNTHETIC SURFACTANT) FROM WATER.
It is a high production volume chemical (i.e., annual production and/or importation volumes above 1 million pounds in the United States).
[ source: http://sodiumlaurylsulphate.blogspot.ru/2013/03/sodium-lauryl-sulfate.html ]
Many other relevant, related publications - references, links, comments - see here:
https://www.researchgate.net/publication/261554265_Biological_filters_are_an_important_part_of_the_biosphere?ev=prf_pub
http://5bio5.blogspot.ru/2014/04/article-accelerated-decrease-in.html
Doklady Biological Sciences 03/2014; 425(1):180-182. DOI:10.1134/S0012496609020276
ABSTRACT
This paper was bookmarked, and upvoted at ResearchGate.
Lazareva E. V., Ostroumov S. A. Accelerated decrease in surfactant concentration in the water of a microcosm in the presence of plants: innovations for phytotechnology. - Doklady Biological Sciences, 2009, Vol. 425, pp. 180–182.
DOI:10.1134/S0012496609020276 ;
A new contribution to the scientific basis of phytoremediation and phytotechnology for water treatment;
AQUATIC PLANT HELP REMOVE A POLLUTANT (SYNTHETIC SURFACTANT) FROM WATER.
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http://www.scribd.com/doc/60795487; in Rus.: http://www.scribd.com/doc/61655262/;
** Tables. Bibliogr. 15 refs. [Pleiades Publishing, Ltd.; ISSN 0012-4966; Presented by Academician G.V. Dobrovol’sky September 26, 2008; DOI: 10.1134/S0012496609020276; original Russian text: E.V. Lazareva, S.A. Ostroumov, 2009, published in Doklady Akademii Nauk, 2009, Vol. 425, No. 6, pp. 843–845].
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It was discovered that plant biomass help towards restoration the water quality in the system which was polluted with a synthetic surfactant. Addition of sodium dodecylsulphate (SDS) to water rapidly changed the surface tension of water in the microcosm.
The measurements demonstrated that the surface tension of water in the microcosm with the macrophyte OST1 restored to the level which was close to that of pure water within less than three days. As soon as after 46-h incubation of the system containing the plant phytomass, the surface tension increased significantly and reached that of distilled water. In the variants with water without plant phytomass, restoration of the normal surface tension was much longer (about 17 days).
The results demonstrated an accelerated restoration of the normal surface tension which was typical of pure water in those systems that contained SDS in the presence of the phytomass of the macrophyte OST1. This is consistent with the conclusion that the macrophyte accelerates the disappearance of the surfactant from water. The results contribute new information to the scientific basis for water phytoremediation, innovative technology for water treatment and purification.
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Many photos of who cited: Citation. They cited some of the series of these publications on environmental science, biology. Who cited:
http://5bio5.blogspot.com/2014/03/cited-these-publications-on.html
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INFORMATION ON THIS SUBSTANCE (SOURCE: WIKIPEDIA):
Applications
SDS is mainly used in detergents for laundry with many cleaning applications.[5] SDS is a highly effective surfactantand is used in any task requiring the removal of oily stains and residues. For example, it is found in higher concentrations with industrial products including engine degreasers, floor cleaners, and car wash soaps. It is found in toothpastes, shampoos, shaving creams, and bubble bath formulations in part for its thickening effect and its ability to create a lather.[6] Pepsodent toothpaste at one time used the name "Irium" for its sodium lauryl sulfate ingredient.
Other names of the chemical:
Sodium monododecyl sulfate; Sodium lauryl sulfate (SLS); Sodium monolauryl sulfate; Sodium dodecanesulfate;
Other names of the chemical:
Sodium monododecyl sulfate; Sodium lauryl sulfate (SLS); Sodium monolauryl sulfate; Sodium dodecanesulfate;
SDS = SLS;
[ source: http://sodiumlaurylsulphate.blogspot.ru/2013/03/sodium-lauryl-sulfate.html ]
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Toxicity:
[source:
http://sodiumlaurylsulphate.blogspot.ru/2013/03/sodium-lauryl-sulphate-health-and.html]Health and Safety Information on the Chemical
Acute Toxicity
Acute toxicity data in the rat show that SLS (=SDS) is harmful by the oral route (LD50 1200 mg/kg bw), and data in the rabbit and guinea pig show it is harmful by the dermal route (LD50 = ~600 mg/kg bw and >1200 mg/kg bw respectively).
Irritation
SLS (=SDS) is a skin and eye irritant in rabbits, and skin irritation has been observed in clinical studies in humans. Indeed in the human 4-hour patch test for irritation, SLS is used at 20% as a positive control to identify substances or preparations that would be on the borderlinefor classification as irritant. SLS is also reported o irritate the respiratory tract.
Sensitisation
No data on skin sensitisation is available in these reviews. However, since OECD Test Guideline methodology for guinea pig skin sensitization predictive tests requires application of 10% SLS at induction to create local irritation for those test materials with no skin irritation potential, it is highly unlikely that SLS (=SDS) is a skin sensitiser as this could create concerns over potential cross sensitisation reactions at challenge with the test material.
Effects from Repeated Exposure
Oral (gavage) repeat exposure studies in rats showed the primary effect of SLS (=SDS) to be local irritation of the gastro-intestinal tract, with no effects seen at the 100 mg/kg bw/day dose level.
Genotoxicity
SLS was negative in an Ames (bacterial mutation) test, a gene mutation and sister chromatid exchange test in mammalian cells, as well as in an in vivo micronucleus assay in mice. The negative results from in vitro and in vivo studies indicate SLS does not interact with DNA.
Carcinogenicity
In the only carcinogenicity study available, SLS was not carcinogenic in Beagle dogs, though the short study duration and limited details provided limit the significance that can be attached to the data.
Reproductive Toxicity
No effect on fertility was seen in a study in male mice administered 100 mg/kg bw/day SLS, or on epididymal sperm in male mice administered SLS at a dose producing systemic toxicity: 1000 mg/kg bw/day. In developmental toxicity studies in the mouse and rabbit using doses of 0.2 to 600 mg/kg bw/day, total resorption of foetuses, increased litter loss and/or abortion were seen at 600 mg/kg bw/day in the presence of severe maternal toxicity. At 300 mg/kg bw/day no developmental toxicity was seen, though slight to moderate maternal toxicity was observed. Therefore, SLS is not considered a developmental toxicant, as the developmental effects seen were a secondary non-specific consequence of severe maternal toxicity.
Health and Safety Information on Formulations Containing Sodium Lauryl Sulfate
Information on formulations containing SLS at final tested concentrations ranging from 0.21 to 26% is available from studies for acute oral toxicity, and skin and eye irritation in animals, along with skin irritation and sensitisation clinical studies in humans. Together, these data support the findings on SLS that the chemical is of moderate acute oral toxicity, and irritant to the skin and eye in both animals and humans.
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Many other relevant, related publications - references, links, comments - see here:
article: Biological filters are an important part of the biosphere // Science in Russia. 2009. No. 2, p. 30-36.
This paper reviews the multi-year research of aquatic organisms: the organisms which are filter-feeders. The research was done by Dr. Sergei A. Ostroumov in U.K., Russia, Ukraine, Moldova. New facts on the substancial role of the filter-feeders in improving water quality. New aspects of environmental hazards from chemical pollution, especially by surfactants and detergents.
http://5bio5.blogspot.ru/2014/04/biological-filters-are-important-part.html
Water Treatment ,
Water Quality ,
Phytoremediation ,
New Technology ,
Pollution Control ,
Surface Tension ,
Water Purification ,
water safety ,
Water Sustainability ,
macrophyte ,
Biotechnology ,
aquatic ,
ecological ,
Innovations ,
Sodium Dodecylsulphate ,
Moscow University
key words, short list: aquatic, biotechnology, Ecological, INNOVATIONS, Macrophyte, Moscow University, phytoremediation, pollution control, purification, sodium dodecylsulphate, Surface Tension, sustainability, water, water quality,
key words, short list: aquatic, biotechnology, Ecological, INNOVATIONS, Macrophyte, Moscow University, phytoremediation, pollution control, purification, sodium dodecylsulphate, Surface Tension, sustainability, water, water quality,
