DOI: 10.1016/j.watres.2017.12.039
Scopus记录号: 2-s2.0-85039729209
论文题名: Realizing high-rate sulfur reduction under sulfate-rich conditions in a biological sulfide production system to treat metal-laden wastewater deficient in organic matter
作者: Sun R. ; Zhang L. ; Zhang Z. ; Chen G.-H. ; Jiang F.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 131 起始页码: 239
结束页码: 245
语种: 英语
英文关键词: Biological sulfur reduction
; Elemental sulfur
; Sulfate-reducing bacteria
; Sulfidogenic reactor
; Sulfur-reducing bacteria
Scopus关键词: Bacteria
; Biochemistry
; Biological water treatment
; Chemicals removal (water treatment)
; Heavy metals
; Metals
; Polysulfides
; Reduction
; Sulfur
; Wastewater treatment
; Elemental sulfur
; Sulfate reducing bacteria
; Sulfidogenic reactor
; Sulfur reducing bacterium
; Sulfur reduction
; Sulfur compounds
; metal
; organic matter
; sulfate
; sulfide
; sulfur
; acid mine drainage
; bioavailability
; biodegradation
; bioreactor
; heavy metal
; metal
; metallurgy
; organic matter
; recovery
; reduction
; sulfate-reducing bacterium
; sulfide
; sulfur
; wastewater
; wastewater treatment
; Article
; bioavailability
; Desulfomicrobium
; electron
; microbial community
; principal coordinate analysis
; priority journal
; reduction (chemistry)
; waste water management
; Bacteria (microorganisms)
; Desulfomicrobium
英文摘要: Biological sulfur reduction can theoretically produce sufficient sulfide to effectively remove and recover heavy metals in the treatment of organics-deficient sulfate-rich metal-laden wastewater such as acid mine drainage and metallurgic wastewater, using 75% less organics than biological sulfate reduction. However, it is still unknown whether sulfur reduction can indeed compete with sulfate reduction, particularly under high-strength sulfate conditions. The aim of this study was to investigate the long-term feasibility of biological sulfur reduction under high sulfate conditions in a lab-scale sulfur-reducing biological sulfide production (BSP) system with sublimed sulfur added. In the 169-day trial, an average sulfide production rate (SPR) as high as 47 ± 9 mg S/L-h was achieved in the absence of sulfate, and the average SPR under sulfate-rich conditions was similar (53 ± 10 mg S/L-h) when 1300 mg S/L sulfate were fed with the influent. Interestingly, sulfate was barely reduced even at such a high strength and contributed to only 1.5% of total sulfide production. Desulfomicrobium was identified as the predominant sulfidogenic bacterium in the bioreactor. Batch tests further revealed that this sulfidogenic bacteria used elemental sulfur as the electron acceptor instead of the highly bioavailable sulfate, during which polysulfide acted as an intermediate, leading to an even higher bioavailability of sulfur than sulfate. The pathway of sulfur to sulfide conversion via polysulfide in the presence of both sulfur and sulfate was discussed. Collectively, when conditions favor polysulfide formation, sulfur reduction can be a promising and attractive technology to realize a high-rate and low-cost BSP process for treating sulfate-rich metal-laden wastewater. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113010
Appears in Collections: 气候减缓与适应
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作者单位: School of Chemistry & Environment, South China Normal University, Guangzhou, China; Department of Bioscience, Aarhus University, Aarhus, Denmark; Department of Civil & Environmental Engineering, Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution (Hong Kong Branch) and Water Technology Center, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong
Recommended Citation:
Sun R.,Zhang L.,Zhang Z.,et al. Realizing high-rate sulfur reduction under sulfate-rich conditions in a biological sulfide production system to treat metal-laden wastewater deficient in organic matter[J]. Water Research,2018-01-01,131