Surfactant-nutrient mix-enhanced bioremediation of soil/aquifers

Deionized Water ◽

Soil Matrix ◽

Linear Alkylbenzene ◽

Time Period ◽

Alkylbenzene Sulfonate ◽

Enhanced Biodegradation ◽

Enhanced Bioremediation

Our research involves the development of economically feasible surfactant/surfactant-nutrientmix (SSNM) - enhanced bioremediation methodology for sustainable, in situ bioremediationof fuel-contaminated aquifers via in vitro column-based optimization of an effective SSNMand the study of its effect on the solubilization/mobilization and biodegradation of NAPL(fuel) in in vitro site/aquifer-simulated bioremediation, The essence of our findings:kerosene's maximum enhanced mobilization - f= 3,6, compared with that of deionized water,was achieved with an SSNM having the composition of linear alkylbenzene sulfonate: cocoamphodiacetate: surfactant-nutrient X = 0, I 5: 0, I 5: 0,05 g/L, respectively; 60-64% of theinitial amount of kerosene in the "packed" saturated soil matrix, has been eluted from itduring -30 days, compared with -87% of toluene during the same time period and 68% ofkerosene biodegradation in "vessel" settings, in 21 days, In conclusion: The indigenousmicroorganisms present in the vaduse zones of fuel-contaminated sandy soil aquifers arecapable of removing up to ~81 % of the initially contained kerosene in ~42 days, OptimizedSSNMs enhance both, mobilization of the balky NAPLs and the desorbtion/solubilization/dispersion of the entrapped NAPL which, in tum, facilitate their enhanced biodegradation,

The influence of a surfactant, linear alkylbenzene sulfonate, on the estrogenic response to a mixture of (xeno)estrogens in vitro and in vivo

Aquatic Toxicology ◽

10.1016/j.aquatox.2008.09.014 ◽

2009 ◽

Vol 91 (1) ◽

pp. 95-98 ◽

Cited By ~ 10

Author(s):

Catherine A. Harris ◽

Jayne V. Brian ◽

Giulio Pojana ◽

Marja Lamoree ◽

Petra Booy ◽

...

Keyword(s):

Linear Alkylbenzene ◽

Effect of alcohol sulfate, linear alkylbenzene sulfonate and natural soap on the development of fertilized eggs of the mouse in vitro

Mutation Research/Environmental Mutagenesis and Related Subjects ◽

10.1016/0165-1161(91)90273-b ◽

1991 ◽

Vol 252 (1) ◽

pp. 91-92

Author(s):

Y. Ishii ◽

Y. Samejima ◽

F. Saji ◽

T. Nomura

Keyword(s):

Alcohol Sulfate ◽

Linear Alkylbenzene ◽

Solid-Phase Contact Assay That Uses a lux-Marked Nitrosomonas europaea Reporter Strain To Estimate Toxicity of Bioavailable Linear Alkylbenzene Sulfonate in Soil

Applied and Environmental Microbiology ◽

10.1128/aem.68.7.3502-3508.2002 ◽

2002 ◽

Vol 68 (7) ◽

pp. 3502-3508 ◽

Cited By ~ 31

Author(s):

Kristian K. Brandt ◽

Anders Pedersen ◽

Jan Sørensen

Keyword(s):

Contaminated Soils ◽

Solid Phase ◽

Nitrosomonas Europaea ◽

Natural Soil ◽

Reporter Strain ◽

Phase Contact ◽

Linear Alkylbenzene ◽

ABSTRACT Information about in situ toxicity of the bioavailable pools of adsorptive soil pollutants is a prerequisite for proper ecological risk assessment in contaminated soils. Such toxicity data may be obtained by assays allowing for direct exposure of introduced test microorganisms to the toxicants, as they appear in solid solution equilibria in the natural soil. We describe a novel sensitive solid-phase contact assay for in situ toxicity testing of soil pollutants based on a recombinant bioluminescent reporter strain of Nitrosomonas europaea. A slurry of the reporter strain and soil sample was shaken for 1 h, after which bioluminescence was measured either directly (soil slurry protocol) or in the supernatant obtained after centrifugation (soil extract protocol). The assay was validated for both protocols by using linear alkylbenzene sulfonate (LAS) as a toxic and adsorptive model compound in the soil samples. Interestingly, LAS showed the same toxicity to the reporter strain with either soil incubation (both protocols) or pure culture, suggesting that adsorbed LAS pools contributed to the observed toxicity. The solid-phase contact assay that used the reporter strain of lux-marked N. europaea was slightly more sensitive for the detection of LAS toxicity in soil than activity-based assays targeting indigenous nitrifiers and much more sensitive than assays targeting indigenous heterotrophic microbes. We conclude that the new solid-phase contact assay, which is based on direct interaction of the test microorganisms with bioavailable pools of the toxicants in soil, provides a most sensitive and relevant method for evaluating the in situ toxicity and assessing the risks of soil contaminants.

In vitro biotransformation of surfactants in fish. Part I: Linear alkylbenzene sulfonate (C12-LAS) and alcohol ethoxylate (C13EO8)

Chemosphere ◽

10.1016/j.chemosphere.2008.02.019 ◽

2008 ◽

Vol 72 (5) ◽

pp. 850-862 ◽

Cited By ~ 26

Author(s):

Scott D. Dyer ◽

Mary Jo Bernhard ◽

Christina Cowan-Ellsberry ◽

Elisabeth Perdu-Durand ◽

Susanne Demmerle ◽

...

Keyword(s):

Alcohol Ethoxylate ◽

Linear Alkylbenzene ◽

Effect of alcohol sulfate, linear alkylbenzene sulfonate and natural soap on the development of fertilized eggs of the mouse in vitro

Mutation Research/Genetic Toxicology ◽

10.1016/0165-1218(90)90041-y ◽

1990 ◽

Vol 242 (2) ◽

pp. 151-155 ◽

Cited By ~ 2

Author(s):

Yutaka Ishii ◽

Yoshihiro Samejima ◽

Fumitaka Saji ◽

Taisei Nomura

Keyword(s):

Alcohol Sulfate ◽

Linear Alkylbenzene ◽

Pemanfaatan Metil Ester Sulfonat pada Pembuatan Deterjen Cair

Jurnal Riset Teknologi Industri ◽

10.26578/jrti.v7i14.1544 ◽

2016 ◽

Vol 7 (14) ◽

pp. 143-155

Author(s):

Eldha Sampepana ◽

Suroto Hadi Saputra

Keyword(s):

Fatty Acids ◽

Methyl Ester ◽

Emulsion Stability ◽

Alcohol Sulfate ◽

Stable Emulsion ◽

Linear Alkylbenzene ◽

Alkylbenzene Sulfonate ◽

The Stability ◽

The Right

In the manufacture of detergents still using surfactants (which serves as an emulsifier) of crude oil in the form of the AS. (alcohol sulfate) and LAS (linear alkylbenzene sulfonate), where this type of surfactant cannot be degraded by microorganisms when discharged into the environment, causing environmental pollution. Methyl ester sulfonate surfactant is an anionic surfactant which has a composition of C16 - C18 fatty acids are capable of acting against nature deterjensinya, while the C12 - C14 fatty acids contribute to the foaming effect. The purpose of this study was to look for the formulation of methyl ester sulfonate (MES) the right to produce a good detergent by using materials such as methyl ester sulfonate surfactant self-made, methyl ester sulfonate and sodium lauryl market Ester Sulfate (SLS) with a concentration of 15 %, 20 % and 25 %. Detergent results of the study have high detergency ( net ) compared with the detergency of detergent commercial, have a stable emulsion stability, the stability of the foam/foam detergent power made from methyl ester sulfonate surfactant produces less foam, compared with a detergent made from SLS and surfactant SNI 06-4075-1996 standards.