Soil quality. Guidance on laboratory testing for biodegradation of organic chemicals in soil under anaerobic conditions

2020 ◽  
Keyword(s):  
Soil Quality ◽  
Laboratory Testing ◽  
Organic Chemicals ◽  
Anaerobic Conditions

Reductive dechlorination pathways of chloro organics under anaerobic conditions

1996 ◽  
Vol 34 (5-6) ◽  
pp. 489-494 ◽  
Author(s):  
Sridhar Susarla ◽  
Shigeki Masunaga ◽  
Yoshitaka Yonezawa
Keyword(s):  
Reductive Dechlorination ◽  
Organic Chemicals ◽  
Anaerobic Conditions ◽  
Sediment Slurry ◽  
Transformation Pathways ◽  
Lag Period ◽  
Cl Atoms ◽  
Cl Atom

The transformation pathways of chloroanilines (CAs), chlorobenzenes (CBs) and chlorophenols (CPs) were examined in anaerobic sediment collected from the Tsurumi river, Japan. The sediment was pre-exposed to various organic chemicals from the surrounding industries and appears to be sulfidogenic. Experiments were carried out for each compound in the sediment slurry, which was spiked at a desired concentration. The transformation of the parent substrate and the appearance of its metabolites were monitored for a year. All the compounds transformed without any lag period. For CBs, the preferential Cl removal was in the order: two Cl atoms on adjacent carbon atoms > one Cl atom on adjacent carbon > no adjacent Cl atom on the carbon. In case of CPs, ortho dechlorination was the preferred pathway, while for CAs, sequential removal of ortho and para positions was observed.

Long-Term Persistence of Organic Chemicals in Sewage Sludge-Amended Agricultural Land: A Soil Quality Perspective

1995 ◽  
pp. 345-391 ◽  
Author(s):  
Angus J. Beck ◽  
Ruth E. Alcock ◽  
Susan C. Wilson ◽  
Min-Jian Wang ◽  
Simon R. Wild ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Soil Quality ◽  
Agricultural Land ◽  
Organic Chemicals
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