Effects of chlortetracycline amended feed on anaerobic sequencing batch reactor performance of swine manure digestion.

Autor: Dreher TM; Department of Civil and Environmental Engineering, South Dakota School of Mines and Technology, Rapid City, SD 57701, USA., Mott HV, Lupo CD, Oswald AS, Clay SA, Stone JJ
Jazyk: angličtina
Zdroj: Bioresource technology [Bioresour Technol] 2012 Dec; Vol. 125, pp. 65-74. Date of Electronic Publication: 2012 Aug 31.
DOI: 10.1016/j.biortech.2012.08.077
Abstrakt: The effects of antimicrobial chlortetracycline (CTC) on the anaerobic digestion (AD) of swine manure slurry using anaerobic sequencing batch reactors (ASBRs) was investigated. Reactors were loaded with manure collected from pigs receiving CTC and no-antimicrobial amended diets at 2.5 g/L/d. The slurry was intermittently fed to four 9.5L lab-scale anaerobic sequencing batch reactors, two with no-antimicrobial manure, and two with CTC-amended manure, and four 28 day ASBR cycles were completed. The CTC concentration within the manure was 2 8 mg/L immediately after collection and 1.02 mg/L after dilution and 250 days of storage. CTC did not inhibit ASBR biogas production extent, however the volumetric composition of methane was significantly less (approximately 13% and 15% for cycles 1 and 2, respectively) than the no-antimicrobial through 56 d. CTC decreased soluble chemical oxygen demand and acetic acid utilization through 56 d, after which acclimation to CTC was apparent for the duration of the experiment.
(Copyright © 2012 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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