Anaerobic treatment of p-acetamidobenzene sulfonyl chloride (p-ASC)-containing wastewater in the presence or absence of ethanol in a UASB reactor. (March 2015)

• Record Type: Journal Article
• Authors: Li, Wei cheng; Wang, Chunyan; Tian, Zhe; Zhang, Hong; Gao, Yingxin; Zhang, Yu; Yang, Min; Li, Yu-You; Nishimura, Osamu
• Is Part Of: International biodeterioration & biodegradation. Volume 98(2015)
• Page Start: 81
• Page End: 88
• Publication Date: 2015-03
• Subjects: p-acetamidobenzene sulfonyl chloride -- Anaerobic treatment -- Aromatic sulfonates -- Industrial wastewater -- Microbial community structure; Biodegradation -- Periodicals; Bioremediation -- Periodicals; Biodegradation -- Periodicals; Biodégradation -- Périodiques; Biorestauration -- Périodiques; Electronic journals; 620.11223
• DOI: 10.1016/j.ibiod.2014.09.002
• Languages: English
• ISSNs: 0964-8305

Abstract

Abstract: A lab-scale UASB reactor was operated for the treatment of p-acetamidobenzene sulfonyl chloride (p-ASC)-containing wastewater with and without ethanol for 210 days. The influence of the organic loading rate on the performance of reactor by step-decreasing HRT reduction/step-increasing the concentration of p-ASC was evaluated. Almost complete degradation of 50 mg/l p-ASC and COD removal efficiency (79.5%) was noticed with a COD removal of 79.5% at HRT of 0.5 day or longer and an applied p-ASC loading rate below 120 mg/l/day. No inhibition to the performance of this reactor was observed even at a p-ASC concentration up to 1000 mg/l. Of interest that despite the absence of sulfate in the feed, a certain quantity of sulfate and sulfide was simultaneously generated in the effluent. The trial result in the absence of ethanol demonstrated that p-ASC could be used as the sole source of carbon and energy. Clone libraries for the archaeal and bacterial communities were constructed for a biomass sample taken on day 190. The majority of bacterial clones were represented by Proteobacteria, followed by Thermotogae, Bacteroidetes and Firmicutes . Bacterial groups within the phyla Clostridia might be responsible for the desulfonation of p-ASC. Highlights: UASB can degrade p-ASC with ethanol as co-substrate. Simultaneous generation of sulfate and sulfide despite no sulfate in fed. No any inhibition occurred even the concentration of p-ASC up to 1 g/l. p-ASC can be degraded as sole carbon and source energy. Some species can be responsible for S release from p-ASC.