Keyword search (4,164 papers available)

"Wastewater" Keyword-tagged Publications:

Title Authors PubMed ID
1 Towards smart PFAS management: Integrating artificial intelligence in water and wastewater systems Yaghoobian S; An J; Jeong DW; Hwang JH; 41483514
ENCS
2 Production and characterization of magnetic Biochar derived from pyrolysis of waste areca nut husk for removal of methylene blue dye from wastewater Chistie SM; Naik SU; Rajendra P; Apeksha None; Mishra RK; Albasher G; Chinnam S; Jeppu GP; Arif Z; Hameed J; 40603323
ENCS
3 Integration of Membrane-Based Pretreatment Methods with Pressure-Retarded Osmosis for Performance Enhancement: A Review Pakdaman S; Nouri G; Mulligan CN; Nasiri F; 40077246
ENCS
4 Nitrogen and organic load removal from anaerobically digested leachate using a hybrid electro-oxidation and electro-coagulation process Choudhury MR; Rajagopal R; Meertens W; Rahaman MS; 35276557
ENCS
5 Treatment of decentralized low-Strength livestock wastewater using microcurrent-assisted multi-soil-layering systems: Performance Assessment and microbial analysis Liu C; Huang G; Song P; An C; Zhang P; Shen J; Ren S; Zhao K; Huang W; Xu Y; Zheng R; 34999101
ENCS
6 Electrochemical nutrient removal from natural wastewater sources and its impact on water quality Kékedy-Nagy L; English L; Anari Z; Abolhassani M; Pollet BG; Popp J; Greenlee LF; 34974342
CSFG
7 Using 3D CityGML for the Modeling of the Food Waste and Wastewater Generation-A Case Study for the City of Montreal Braun R; Padsala R; Malmir T; Mohammadi S; Eicker U; 34240049
ENCS
8 Exploring the decentralized treatment of sulfamethoxazole-contained poultry wastewater through vertical-flow multi-soil-layering systems in rural communities. Song P, Huang G, An C, Xin X, Zhang P, Chen X, Ren S, Xu Z, Yang X 33065414
ENCS
9 Performance analysis and life cycle greenhouse gas emission assessment of an integrated gravitational-flow wastewater treatment system for rural areas. Song P, Huang G, An C, Zhang P, Chen X, Ren S 31273662
ENCS
10 Start-up of oxygen-limited autotrophic partial nitrification-anammox process for treatment of nitrite-free wastewater in a single-stage hybrid bioreactor. Hosseinpour B, Saborimanesh N, Yerushalmi L, Walsh D, Mulligan CN 31378146
CSFG
11 Pilot-scale application of a single-stage hybrid airlift BioCAST bioreactor for treatment of ammonium from nitrite-limited wastewater by a partial nitrification/anammox process. Saborimanesh N, Walsh D, Yerushalmi L, Arriagada EC, Mulligan CN 31267396
BIOLOGY

 

Title:Nitrogen and organic load removal from anaerobically digested leachate using a hybrid electro-oxidation and electro-coagulation process
Authors:Choudhury MRRajagopal RMeertens WRahaman MS
Link:pubmed.ncbi.nlm.nih.gov/35276557/
DOI:10.1016/j.jenvman.2022.114761
Publication:Journal of environmental management
Keywords:Anaerobically digested leachateBipolar electrodeBoron-doped diamond electrodeElectro-coagulationElectro-oxidationElectrochemical wastewater treatment
PMID:35276557 Category: Date Added:2022-03-14
Dept Affiliation: ENCS
1 Department of Building, Civil and Environmental Engineering, Concordia University, 1455 Boul de Maisonneuve Ouest, Montreal, PQ H3G 1M8, Canada; Department of Civil and Environmental Engineering, School of Engineering, Manhattan College, 3825 Corlear Ave, The Bronx, NY, 10463, United States.
2 Sherbrooke Research and Development Center, Agriculture and Agri-Food Canada, 2000 College Street, Sherbrooke, QC J1M 0C8, Canada.
3 Department of Building, Civil and Environmental Engineering, Concordia University, 1455 Boul de Maisonneuve Ouest, Montreal, PQ H3G 1M8, Canada.
4 Department of Civil, Geological and Mining Engineering, Polytechnique Montreal, H3C 3A7, QC, Canada. Electronic address: saifur.rahaman@polymtl.ca.

Description:

This study evaluated the performance of an integrated electrochemical process, which simultaneously utilizes electro-oxidation (EO) and electro-coagulation (EC) methods while removing organic and nitrogen loads from high-strength leachate obtained from anaerobic digesters. A bipolar arrangement of the aluminum electrode, sandwiched between a monopolar boron-doped diamond anode and stainless-steel cathode, integrates EC and EO into a single reactor. This arrangement demonstrated an enhancement of 33%, 27%, and 24% in removal capacity for ammonia nitrogen (AN), total Kjeldahl nitrogen (TKN), and total nitrogen, respectively, when compared to just EO at 0.8 A current intensity after 24 h. Increasing the current intensity from 0.4 A to 1.0 A enhanced the organic nitrogen and AN removal. Chemical oxygen demand (COD) exhibited initial faster removal kinetics with higher current intensities and eventually reached 95%-98% removal for intensities of 0.6 A or higher. Additional removal for AN, TKN were also observed with increasing current intensity. Lowering the pH further expedited the COD removal kinetics. Reducing and maintaining the pH at 4, 6, and 8 by dosing of hydrochloric acid (HCl) resulted in the 100% removal of AN and TKN from the integrated system in 6, 8, and 20 h, respectively. Accelerated removal of COD and the enhanced removal of AN and TKN through pH control could be linked to the formation of active chlorine species in bulk solution. The integrated system offered lower energy consumption than EO due to oxidation on the additional anodic surface of the bipolar electrode, as well as the adsorption-precipitation of contaminants in aluminum flocs.




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