DOI: 10.1016/j.watres.2018.05.018
Scopus记录号: 2-s2.0-85048721640
论文题名: Bioelectrochemically-assisted mitigation of salinity buildup and recovery of reverse-fluxed draw solute in an osmotic membrane bioreactor
作者: Yang Y. ; Yang X. ; He Z.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 141 起始页码: 259
结束页码: 267
语种: 英语
英文关键词: Bioelectrochemical system
; Osmotic membrane bioreactor
; Resource recovery
; Reverse solute flux
; Wastewater
Scopus关键词: Bioconversion
; Biological water treatment
; Bioreactors
; Carbon dioxide
; Chemical oxygen demand
; Energy utilization
; Osmosis
; Surface treatment
; Wastewater
; Water conservation
; Bio-electrochemical systems
; Bioelectrochemical process
; Bioelectrochemical systems (BES)
; Chemical oxygen demand removals
; Membrane bioreactor
; Resource recovery
; Solute Flux
; Specific energy consumption
; Recovery
; ammonia
; salt water
; accumulation
; ammonia
; bioreactor
; carbon dioxide
; chemical oxygen demand
; conductivity
; control system
; electrochemical method
; recovery
; resource use
; salinity
; salt
; solute
; solute transport
; wastewater
; Article
; bioenergy
; chemical oxygen demand
; conductance
; control system
; electrochemical analysis
; energy consumption
; energy recovery
; extraction
; osmosis
; priority journal
; salinity
; solute
; waste water management
; water supply
; artificial membrane
; bioreactor
; osmosis
; procedures
; waste water
; water management
; Bioreactors
; Electrochemical Techniques
; Membranes, Artificial
; Osmosis
; Saline Waters
; Salinity
; Waste Water
; Water Purification
英文摘要: A key challenge for osmotic membrane bioreactors (OMBRs) application is reverse solute flux and consequent salt accumulation in the feed side. Herein, a bioelectrochemical system (BES) was employed to drive reverse-fluxed solutes from the feed of an OMBR into a cathode compartment for recovery and subsequent reuse as a draw solute (DS). Compared to an OMBR without BES function, the present OMBR system enhanced water recovery from 925 to 1688 mL and increased the chemical oxygen demand (COD) removal efficiency from 40.2 ± 8.1 to 75.2 ± 3.3%, benefited from its lower anolyte conductivity of 9.0 mS cm−1 than that of the control system (24.1 mS cm−1). The CO2 addition significantly improved the ammonia recovery rate to 93.3–116.7 g N m−3 h−1 (or 248.0–307.4 g N m−2 d−1), 12.1–14.5 times higher than that without CO2 addition. The recovered DS was successfully applied to accomplish water extraction in the reuse test, and such a recovery/reuse process could result in a normalized water recovery of 3870 mL mol DS−1 or a DS usage of 0.26 mol L−1 (of the recovered water). The energy consumption of the system might be compensated by the production of bioenergy, and the net specific energy consumption was estimated to be 0.004–0.112 kWh m−3 wastewater, 0.007–0.179 kWh kg−1 removed COD, or 0.001–0.020 kWh kg−1 recovered NH4 +-N. Those results have demonstrated that bioelectrochemical processes can be an effective approach for in situ mitigation of reverse-fluxed solute in OMBR and recovering “the lost DS” towards both reuse and reduced operational expense. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112676
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: School of Civil Engineering, Southeast University, Nanjing, 210096, China; Department of Civil and Environmental Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, United States
Recommended Citation:
Yang Y.,Yang X.,He Z.. Bioelectrochemically-assisted mitigation of salinity buildup and recovery of reverse-fluxed draw solute in an osmotic membrane bioreactor[J]. Water Research,2018-01-01,141