Anaerobic Degradation Pathway of Linear Alkylbenzene Sulfonates (LAS) in Sulfate-Reducing Marine Sediments

2010 ◽  
Vol 44 (5) ◽  
pp. 1670-1676 ◽  
Author(s):  
Pablo A. Lara-Martín ◽  
Abelardo Gómez-Parra ◽  
José Luis Sanz ◽  
Eduardo González-Mazo
Keyword(s):  
Marine Sediments ◽  
Anaerobic Degradation ◽  
Degradation Pathway ◽  
Linear Alkylbenzene ◽  
Sulfate Reducing ◽  
Linear Alkylbenzene Sulfonates

Anaerobic Degradation of Linear Alkylbenzene Sulfonates in Coastal Marine Sediments

2007 ◽  
Vol 41 (10) ◽  
pp. 3573-3579 ◽  
Author(s):  
Pablo A. Lara-Martín ◽  
Abelardo Gómez-Parra ◽  
Thorsten Köchling ◽  
José Luis Sanz ◽  
Ricardo Amils ◽  
...  
Keyword(s):  
Marine Sediments ◽  
Anaerobic Degradation ◽  
Coastal Marine Sediments ◽  
Linear Alkylbenzene ◽  
Coastal Marine ◽  
Linear Alkylbenzene Sulfonates

Anaerobic bioprocessing of sewage sludge, focusing on degradation of linear alkylbenzene sulfonates (LAS)

2004 ◽  
Vol 49 (10) ◽  
pp. 115-122 ◽  
Author(s):  
I. Angelidaki ◽  
L. Toräng ◽  
C.M. Waul ◽  
J.E. Schmidt
Keyword(s):  
Mass Balance ◽  
Anaerobic Degradation ◽  
Uasb Reactor ◽  
Second Step ◽  
Anaerobic Sludge ◽  
Continuous Stirred Tank Reactor ◽  
Anaerobic Process ◽  
Linear Alkylbenzene ◽  
Linear Alkylbenzene Sulfonates ◽  
Uasb Reactors

Anaerobic degradation of sludge amended with linear alkylbenzene sulfonates (LAS) was tested in a one stage continuous stirred tank reactor (CSTR) and a two stage reactor system consisting of a CSTR as first step and upflow anaerobic sludge bed (UASB) reactor as the second step. Anaerobic removal of LAS was only observed at the second step but not at the first step. Removal of LAS in the UASB reactors was approx. 80% where half was due to absorption and the other half was apparently due to biological removal as shown from the LAS mass balance. At the end of the experiment the reactors were spiked with 14C-LAS which resulted in 5.6% 14CO2 in the produced gas. Total mass balance of the radioactivity was however not achieved. In batch experiments it was found that LAS at concentrations higher than 50 mg/l is inhibitory for most microbial groups of the anaerobic process. Therefore, low initial LAS concentration is a prerequisite for successful LAS degradation. The results from the present study suggest that anaerobic degradation of LAS is possible in UASB reactors when the concentration of LAS is low enough to avoid inhibition of microorganisms active in the anaerobic process.

scholarly journals Pseudodesulfovibrio cashew sp. Nov., a Novel Deep-Sea Sulfate-Reducing Bacterium, Linking Heavy Metal Resistance and Sulfur Cycle

2021 ◽  
Vol 9 (2) ◽  
pp. 429
Author(s):  
Rikuan Zheng ◽  
Shimei Wu ◽  
Chaomin Sun
Keyword(s):  
Heavy Metal ◽  
Sulfate Reduction ◽  
Marine Sediments ◽  
Deep Sea ◽  
Sulfur Cycle ◽  
Metal Sulfides ◽  
Phenotypic Traits ◽  
Dissimilatory Sulfate Reduction ◽  
Metabolic Potential ◽  
Sulfate Reducing

Sulfur cycling is primarily driven by sulfate reduction mediated by sulfate-reducing bacteria (SRB) in marine sediments. The dissimilatory sulfate reduction drives the production of enormous quantities of reduced sulfide and thereby the formation of highly insoluble metal sulfides in marine sediments. Here, a novel sulfate-reducing bacterium designated Pseudodesulfovibrio cashew SRB007 was isolated and purified from the deep-sea cold seep and proposed to represent a novel species in the genus of Pseudodesulfovibrio. A detailed description of the phenotypic traits, phylogenetic status and central metabolisms of strain SRB007 allowed the reconstruction of the metabolic potential and lifestyle of a novel member of deep-sea SRB. Notably, P. cashew SRB007 showed a strong ability to resist and remove different heavy metal ions including Co2+, Ni2+, Cd2+ and Hg2+. The dissimilatory sulfate reduction was demonstrated to contribute to the prominent removal capability of P. cashew SRB007 against different heavy metals via the formation of insoluble metal sulfides.

Fate and Distribution of Linear Alkylbenzene Sulfonates in the Littoral Environment

1998 ◽  
Vol 32 (11) ◽  
pp. 1636-1641 ◽  
Author(s):  
Eduardo González-Mazo ◽  
Jesus María Forja ◽  
Abelardo Gómez-Parra
Keyword(s):  
Linear Alkylbenzene ◽  
Linear Alkylbenzene Sulfonates
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