Aerobic and anaerobic degradation of several arsenicals by sedimentary micro-organisms

1990 ◽  
Vol 4 (3) ◽  
pp. 239-243 ◽  
Author(s):  
Ken'ichi Hanaoka ◽  
Shigeo Hasegawa ◽  
Naoki Kawabe ◽  
Shoji Tagawa ◽  
Toshikazu Kaise
Keyword(s):  
Anaerobic Degradation ◽  
Micro Organisms ◽  
Aerobic And Anaerobic

Aerobic and Anaerobic Degradation of Aldicarb in Asceptically Collected Soils

1986 ◽  
Vol 15 (4) ◽  
pp. 356-363 ◽  
Author(s):  
L. ‐T. Ou ◽  
J. E. Thomas ◽  
K. S. V. Edvardsson ◽  
P. S. C. Rao ◽  
W. B. Wheeler
Keyword(s):  
Anaerobic Degradation ◽  
Aerobic And Anaerobic

scholarly journals Aerobic and anaerobic degradation of tannic acid on water samples from Monjolinho reservoir (São Paulo, SP, Brazil)

2002 ◽  
Vol 62 (4a) ◽  
pp. 585-590 ◽  
Author(s):  
M. B. CUNHA-SANTINO ◽  
I. BIANCHINI Jr. ◽  
L. E. F. SERRANO
Keyword(s):  
Organic Carbon ◽  
Tannic Acid ◽  
Anaerobic Degradation ◽  
High Capacity ◽  
Order Kinetic ◽  
Anaerobic Conditions ◽  
First Order ◽  
Order Kinetic Model ◽  
Carbon Concentrations ◽  
Aerobic And Anaerobic

In order to describe the transformations of tannic acid during its degradation (under aerobic and anaerobic conditions) incubations were performed. To evaluate the oxygen consumption, the tannic acid was added to 1 L of water sample from Monjolinho's reservoir (22º00'S and 47º54'W); these solutions were aerated and the dissolved oxygen was monitored for 16 days, the anaerobic process was avoided. For the anaerobic and aerobic degradation, the dissolved organic carbon and the acid tannic concentrations were estimated on the samples days. The results were fitted to first-order kinetic model, being possible to verify that during the 16 days the oxygen uptake was 3.6 mg.L-1, the deoxygenation rate (kD)of this process was 0.39 day-1. The degradation coefficients were calculated through the decay of the tannic acid and organic carbon concentrations. In the aerobic process, the global decay coefficient (kG) was 0.36 day-1 and in the anaerobic 0.28 day-1. Overall, the obtained degradation coefficients suggest that the bacterioplankton of the Monjolinho's reservoir possess a high capacity of polyphenols degradation.

scholarly journals Biodegradation of Tetrabromobisphenol-A in Mangrove Sediments

2018 ◽  
Vol 11 (1) ◽  
pp. 151 ◽  
Author(s):  
Chu-Wen Yang ◽  
Chien-Sen Liao ◽  
His Ku ◽  
Bea-Ven Chang
Keyword(s):  
Anaerobic Degradation ◽  
Zerovalent Iron ◽  
Tetrabromobisphenol A ◽  
Aerobic Degradation ◽  
Anaerobic Conditions ◽  
Mushroom Compost ◽  
Mangrove Sediments ◽  
Spent Mushroom Compost ◽  
Degradation Rates ◽  
Aerobic And Anaerobic

Tetrabromobisphenol-A (TBBPA) is a pollutant which has a devastating impact on our environment and should be removed from earth. This research aims to evaluate the aerobic and anaerobic TBBPA degradation and bacterial community changes in mangrove sediments. TBBPA degradation in the sediments was enhanced with a microcapsuled enzyme extract of spent mushroom compost (MC) under aerobic conditions and with zerovalent iron under anaerobic conditions. The TBBPA aerobic or anaerobic degradation rates were enhanced for three time additions. Four bacterial genera (Bacillus, Erythrobacter, Pseudomonas, Rhodococcus) were associated with TBBPA aerobic degradation; and four other bacterial genera (Desulfovibrio, Pseudomonas, Sphaerochaeta, Sphingomonas) were associated with TBBPA anaerobic degradation in the sediment. Moreover, nine methanogens were identified under anaerobic conditions that might also be involved in TBBPA anaerobic degradation in the sediment. Our results demonstrate two feasible methods toward TBBPA bioremediation for mangrove sediments under aerobic and anaerobic conditions.

Aerobic and anaerobic degradation of profluralin and trifluralin

1980 ◽  
Vol 15 (5) ◽  
pp. 457-473 ◽  
Author(s):  
N. D. Camper ◽  
Kathleen Stralka ◽  
H. D. Skipper
Keyword(s):  
Anaerobic Degradation ◽  
Aerobic And Anaerobic
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