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Biogas generation in anaerobic wastewater treatment under tetracycline antibiotic pressure.

Lu M, Niu X, Liu W, Zhang J, Wang J, Yang J, Wang W, Yang Z - Sci Rep (2016)

Bottom Line: The effect of tetracycline (TC) antibiotic on biogas generation in anaerobic wastewater treatment was studied.The presence of TC had a large negative effect on CH4 and CO2 generation, but appeared to have a positive effect on H2 production and VFAs accumulation.Additionally, the decrease of CH4 and CO2 generation and the increase of H2 and VFAs accumulation suggest a promising strategy to help alleviate global warming and improve resource recovery in an environmentally friendly approach.

View Article: PubMed Central - PubMed

Affiliation: School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China.

ABSTRACT
The effect of tetracycline (TC) antibiotic on biogas generation in anaerobic wastewater treatment was studied. A lab-scale Anaerobic Baffled Reactor (ABR) with three compartments was used. The reactor was operated with synthetic wastewater in the absence of TC and in the presence of 250 μg/L TC for 90 days, respectively. The removal rate of TC, volatile fatty acids (VFAs), biogas compositions (hydrogen (H2), methane (CH4), carbon dioxide (CO2)), and total biogas production in each compartment were monitored in the two operational conditions. Results showed that the removal rate of TC was 14.97-67.97% in the reactor. The presence of TC had a large negative effect on CH4 and CO2 generation, but appeared to have a positive effect on H2 production and VFAs accumulation. This response indicated that the methanogenesis process was sensitive to TC presence, but the acidogenesis process was insensitive. This suggested that the presence of TC had less influence on the degradation of organic matter but had a strong influence on biogas generation. Additionally, the decrease of CH4 and CO2 generation and the increase of H2 and VFAs accumulation suggest a promising strategy to help alleviate global warming and improve resource recovery in an environmentally friendly approach.

No MeSH data available.


Related in: MedlinePlus

Responses of biogas compositions (H2, CH4, CO2) in each compartment of the reactor: (A) H2; (B) CH4; (C) CO2. The data are presented as means ± SD from triplicates for each determination, ANOVA significant at P ≤ 0.05. Separate test the significant value in TC-absence and TC-presence wastewater condition. Different capital letters indicate significantly different values among compartments at each monitored time, and different small letters indicate significantly different values among exposure times in a particular compartment (DMRT, P ≤ 0.05). * and ** indicate the significant value of T-test between TC-absence and TC-presence wastewater operation at P ≤ 0.05 and P ≤ 0.01.
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f3: Responses of biogas compositions (H2, CH4, CO2) in each compartment of the reactor: (A) H2; (B) CH4; (C) CO2. The data are presented as means ± SD from triplicates for each determination, ANOVA significant at P ≤ 0.05. Separate test the significant value in TC-absence and TC-presence wastewater condition. Different capital letters indicate significantly different values among compartments at each monitored time, and different small letters indicate significantly different values among exposure times in a particular compartment (DMRT, P ≤ 0.05). * and ** indicate the significant value of T-test between TC-absence and TC-presence wastewater operation at P ≤ 0.05 and P ≤ 0.01.

Mentions: The performances of gas compositions (H2, CH4, CO2) are shown in Fig. 3. The monitored gases were H2, CH4, CO2, which are the dominant biogas produced in anaerobic wastewater treatment process.


Biogas generation in anaerobic wastewater treatment under tetracycline antibiotic pressure.

Lu M, Niu X, Liu W, Zhang J, Wang J, Yang J, Wang W, Yang Z - Sci Rep (2016)

Responses of biogas compositions (H2, CH4, CO2) in each compartment of the reactor: (A) H2; (B) CH4; (C) CO2. The data are presented as means ± SD from triplicates for each determination, ANOVA significant at P ≤ 0.05. Separate test the significant value in TC-absence and TC-presence wastewater condition. Different capital letters indicate significantly different values among compartments at each monitored time, and different small letters indicate significantly different values among exposure times in a particular compartment (DMRT, P ≤ 0.05). * and ** indicate the significant value of T-test between TC-absence and TC-presence wastewater operation at P ≤ 0.05 and P ≤ 0.01.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4920035&req=5

f3: Responses of biogas compositions (H2, CH4, CO2) in each compartment of the reactor: (A) H2; (B) CH4; (C) CO2. The data are presented as means ± SD from triplicates for each determination, ANOVA significant at P ≤ 0.05. Separate test the significant value in TC-absence and TC-presence wastewater condition. Different capital letters indicate significantly different values among compartments at each monitored time, and different small letters indicate significantly different values among exposure times in a particular compartment (DMRT, P ≤ 0.05). * and ** indicate the significant value of T-test between TC-absence and TC-presence wastewater operation at P ≤ 0.05 and P ≤ 0.01.
Mentions: The performances of gas compositions (H2, CH4, CO2) are shown in Fig. 3. The monitored gases were H2, CH4, CO2, which are the dominant biogas produced in anaerobic wastewater treatment process.

Bottom Line: The effect of tetracycline (TC) antibiotic on biogas generation in anaerobic wastewater treatment was studied.The presence of TC had a large negative effect on CH4 and CO2 generation, but appeared to have a positive effect on H2 production and VFAs accumulation.Additionally, the decrease of CH4 and CO2 generation and the increase of H2 and VFAs accumulation suggest a promising strategy to help alleviate global warming and improve resource recovery in an environmentally friendly approach.

View Article: PubMed Central - PubMed

Affiliation: School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China.

ABSTRACT
The effect of tetracycline (TC) antibiotic on biogas generation in anaerobic wastewater treatment was studied. A lab-scale Anaerobic Baffled Reactor (ABR) with three compartments was used. The reactor was operated with synthetic wastewater in the absence of TC and in the presence of 250 μg/L TC for 90 days, respectively. The removal rate of TC, volatile fatty acids (VFAs), biogas compositions (hydrogen (H2), methane (CH4), carbon dioxide (CO2)), and total biogas production in each compartment were monitored in the two operational conditions. Results showed that the removal rate of TC was 14.97-67.97% in the reactor. The presence of TC had a large negative effect on CH4 and CO2 generation, but appeared to have a positive effect on H2 production and VFAs accumulation. This response indicated that the methanogenesis process was sensitive to TC presence, but the acidogenesis process was insensitive. This suggested that the presence of TC had less influence on the degradation of organic matter but had a strong influence on biogas generation. Additionally, the decrease of CH4 and CO2 generation and the increase of H2 and VFAs accumulation suggest a promising strategy to help alleviate global warming and improve resource recovery in an environmentally friendly approach.

No MeSH data available.


Related in: MedlinePlus