Effect of thiosulfate on rapid start-up of sulfur-based reduction of high concentrated perchlorate: A study of kinetics, extracellular polymeric substances (EPS) and bacterial community structure. (November 2017)

• Record Type: Journal Article
• Authors: Guo, Jianbo; Zhang, Chao; Lian, Jing; Lu, Caicai; Chen, Zhi; Song, Yuanyuan; Guo, Yankai; Xing, Yajuan
• Is Part Of: Bioresource technology. Volume 243(2017)
• Page Start: 932
• Page End: 940
• Publication Date: 2017-11
• Subjects: Perchlorate reduction -- Sulfur-based -- Kinetics -- Extracellular polymeric substances (EPS) -- Microbial community structure; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2017.07.045
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: The T-Acc was first inoculated in the sulfur-based reactor. Inoculating the T-Acc had high perchlorate reduction efficiency. The development of biofilm was investigated by the kinetics model. Sulfurovum was the main bacterium in T-Acc and S-Acc consortium. Abstract: Perchlorate (ClO4 − ) contamination is more and more concerned due to the hazards to humans. Based on the common primary bacterium (Helicobacteraceae) of both thiosulfate-acclimated sludge (T-Acc) and sulfur-acclimated sludge (S-Acc) for perchlorate reduction, the rapid start-up of sulfur-based perchlorate reduction reactor (SBPRR) was hypothesized by inoculating T-Acc. Furthermore, the performance of SBPRR, the SO4 2− yield, kinetics of ClO4 − reduction and the extracellular polymeric substances (EPS) of biofilm confirmed the hypothesis. The start-up time of R3 (reactor inoculating T-Acc) was 0.18 and 0.21 times that of R1 (control) and R2 (reactor with the influent containing thiosulfate), respectively. The SO4 2− yield of R3 was lower than that of R2 and R1 with perchlorate removal rate 166.7 mg/(L h). The kinetic study and EPS demonstrated that inoculating T-Acc was beneficial for the development of biofilm. Consequently, the present study indicated that SBPRR can be rapidly and successfully started-up via inoculation of T-Acc.