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dc.contributor.authorLi, Guibiao
dc.contributor.authorLiang, Zhensheng
dc.contributor.authorSun, Jianliang
dc.contributor.authorQiu, Yanying
dc.contributor.authorQiu, Chuyin
dc.contributor.authorLiang, Xiaomin
dc.contributor.authorZhu, Yuhang
dc.contributor.authorWang, Peng
dc.contributor.authorLi, Yu
dc.contributor.authorJiang, Feng
dc.date.accessioned2021-03-23T13:46:46Z
dc.date.available2021-03-23T13:46:46Z
dc.date.issued2021-03-14
dc.date.submitted2020-10-22
dc.identifier.citationLi, G., Liang, Z., Sun, J., Qiu, Y., Qiu, C., Liang, X., … Jiang, F. (2021). A pilot-scale sulfur-based sulfidogenic system for the treatment of Cu-laden electroplating wastewater using real domestic sewage as electron donor. Water Research, 195, 116999. doi:10.1016/j.watres.2021.116999
dc.identifier.issn0043-1354
dc.identifier.pmid33714911
dc.identifier.doi10.1016/j.watres.2021.116999
dc.identifier.urihttp://hdl.handle.net/10754/668204
dc.description.abstractElemental sulfur (S0) reduction process has been demonstrated as an attractive and cost-efficient approach for metal-laden wastewater treatment in lab-scale studies. However, the system performance and stability have not been evaluated in pilot- or large-scale wastewater treatment. Especially, the sulfide production rate and microbial community structure may significantly vary from lab-scale system to pilot- or large-scale systems using real domestic sewage as carbon source, which brings questions to this novel technology. In this study, therefore, a pilot-scale sulfur-based sulfidogenic treatment system was newly developed and applied for the treatment of Cu-laden electroplating wastewaters using domestic sewage as carbon source. During the 175-d operation, >99.9% of Cu2+ (i.e., 5580 and 1187 mg Cu/L for two types of electroplating wastewaters) was efficiently removed by the biogenic hydrogen sulfide that produced through S0 reduction. Relatively high level of sulfide production (200 mg S/L) can be achieved by utilizing organics in raw domestic sewage, which was easily affected by the organic content and pH value of the domestic sewage. The long-term feeding of domestic sewage significantly re-shaped the microbial community in sulfur-reducing bioreactors. Compared to the reported lab-scale bioreactors, higher microbial community diversity was found in our pilot-scale bioreactors. The presence of hydrolytic, fermentative and sulfur-reducing bacteria was the critical factor for system stability. Accordingly, a two-step ecological interaction among fermentative and sulfur-reducing bacteria was newly proposed for sulfide production: biodegradable particulate organic carbon (BPOC) was firstly degraded to dissolved organic carbon (DOC) by the hydrolytic and fermentative bacteria. Then, sulfur-reducing bacteria utilized the total DOC (both DOC degraded from BPOC and the original DOC present in domestic sewage) as electron donor and reduced the S0 to sulfide. Afterwards, the sulfide precipitated Cu2+ in the post sedimentation tank. Compared with other reported technologies, the sulfur-based treatment system remarkable reduced the total chemical cost by 87.5‒99.6% for the same level of Cu2+ removal. Therefore, this pilot-scale study demonstrated that S0 reduction process can be a sustainable technology to generate sulfide for the co-treatment of Cu-laden electroplating wastewater and domestic sewage, achieving higher Cu2+removal and higher cost-effectiveness than the conventional technologies.
dc.description.sponsorshipThe authors acknowledge the support from the National Natural Science Foundation of China (No. 51978289 and 51638005).
dc.publisherElsevier BV
dc.relation.urlhttps://linkinghub.elsevier.com/retrieve/pii/S0043135421001974
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Water research. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Water research, [195, , (2021-03-14)] DOI: 10.1016/j.watres.2021.116999 . © 2021. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.titleA pilot-scale sulfur-based sulfidogenic system for the treatment of Cu-laden electroplating wastewater using real domestic sewage as electron donor.
dc.typeArticle
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.contributor.departmentEnvironmental Nanotechnology Lab
dc.contributor.departmentEnvironmental Science and Engineering Program
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)
dc.identifier.journalWater research
dc.rights.embargodate2023-03-11
dc.eprint.versionPost-print
dc.contributor.institutionaSchool of Environment, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, China
dc.contributor.institutionbSchool of Environmental Science & Engineering, Sun Yat-sen University, Guangzhou, 510275, China
dc.contributor.institutioncGuangzhou Zhiye Synthetic Inorganic Salt Material. Co., Ltd, Guangzhou, 511400, China
dc.contributor.institutioneDepartment of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong, China
dc.identifier.volume195
dc.identifier.pages116999
kaust.personWang, Peng
dc.date.accepted2021-03-01
dc.identifier.eid2-s2.0-85102308274


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