A new multiple-stage electrocoagulation process on anaerobic digestion effluent to simultaneously reclaim water and clean up biogas

Zhiguo Liu, David Stromberg, Xuming Liu, Wei Liao, Yan Liu

Research output: Contribution to journalArticle

  • 11 Citations

Abstract

A new multiple-stage treatment process was developed via integrating electrocoagulation with biogas pumping to simultaneously reclaim anaerobic digestion effluent and clean up biogas. The 1st stage of electrocoagulation treatment under the preferred reaction condition led to removal efficiencies of 30%, 81%, 37% and >99.9% for total solids, chemical oxygen demand, total nitrogen and total phosphorus, respectively. Raw biogas was then used as a reactant and pumped into the effluent to simultaneously neutralize pH of the effluent and remove H2S in the biogas. The 2nd stage of electrocoagulation treatment on the neutralized effluent showed that under the selected reaction condition, additional 60% and 10% of turbidity and chemical oxygen demand were further removed. The study concluded a dual-purpose approach for the first time to synergistically combine biogas purification and water reclamation for anaerobic digestion system, which well addresses the downstream challenges of anaerobic digestion technology.

LanguageEnglish (US)
Pages483-490
Number of pages8
JournalJournal of Hazardous Materials
Volume285
DOIs
StatePublished - Mar 1 2015

Profile

Electrocoagulation
Anaerobic digestion
Biofuels
Biogas
biogas
Effluents
Digestion
effluent
Water
Biological Oxygen Demand Analysis
Chemical oxygen demand
chemical oxygen demand
water
Wastewater reclamation
Water Purification
Turbidity
Phosphorus
Purification
purification
turbidity

Keywords

  • Anaerobic digestion
  • Biogas purification
  • Electrocoagulation
  • Nutrient removal
  • Water reclamation

ASJC Scopus subject areas

  • Health, Toxicology and Mutagenesis
  • Pollution
  • Waste Management and Disposal
  • Environmental Chemistry
  • Environmental Engineering

Cite this

A new multiple-stage electrocoagulation process on anaerobic digestion effluent to simultaneously reclaim water and clean up biogas. / Liu, Zhiguo; Stromberg, David; Liu, Xuming; Liao, Wei; Liu, Yan.

In: Journal of Hazardous Materials, Vol. 285, 01.03.2015, p. 483-490.

Research output: Contribution to journalArticle

@article{a5129236ff8446e4adefd879b895a895,
title = "A new multiple-stage electrocoagulation process on anaerobic digestion effluent to simultaneously reclaim water and clean up biogas",
abstract = "A new multiple-stage treatment process was developed via integrating electrocoagulation with biogas pumping to simultaneously reclaim anaerobic digestion effluent and clean up biogas. The 1st stage of electrocoagulation treatment under the preferred reaction condition led to removal efficiencies of 30{\%}, 81{\%}, 37{\%} and >99.9{\%} for total solids, chemical oxygen demand, total nitrogen and total phosphorus, respectively. Raw biogas was then used as a reactant and pumped into the effluent to simultaneously neutralize pH of the effluent and remove H2S in the biogas. The 2nd stage of electrocoagulation treatment on the neutralized effluent showed that under the selected reaction condition, additional 60{\%} and 10{\%} of turbidity and chemical oxygen demand were further removed. The study concluded a dual-purpose approach for the first time to synergistically combine biogas purification and water reclamation for anaerobic digestion system, which well addresses the downstream challenges of anaerobic digestion technology.",
keywords = "Anaerobic digestion, Biogas purification, Electrocoagulation, Nutrient removal, Water reclamation",
author = "Zhiguo Liu and David Stromberg and Xuming Liu and Wei Liao and Yan Liu",
year = "2015",
month = "3",
day = "1",
doi = "10.1016/j.jhazmat.2014.10.009",
language = "English (US)",
volume = "285",
pages = "483--490",
journal = "Journal of Hazardous Materials",
issn = "0304-3894",
publisher = "Elsevier",

}

TY - JOUR

T1 - A new multiple-stage electrocoagulation process on anaerobic digestion effluent to simultaneously reclaim water and clean up biogas

AU - Liu,Zhiguo

AU - Stromberg,David

AU - Liu,Xuming

AU - Liao,Wei

AU - Liu,Yan

PY - 2015/3/1

Y1 - 2015/3/1

N2 - A new multiple-stage treatment process was developed via integrating electrocoagulation with biogas pumping to simultaneously reclaim anaerobic digestion effluent and clean up biogas. The 1st stage of electrocoagulation treatment under the preferred reaction condition led to removal efficiencies of 30%, 81%, 37% and >99.9% for total solids, chemical oxygen demand, total nitrogen and total phosphorus, respectively. Raw biogas was then used as a reactant and pumped into the effluent to simultaneously neutralize pH of the effluent and remove H2S in the biogas. The 2nd stage of electrocoagulation treatment on the neutralized effluent showed that under the selected reaction condition, additional 60% and 10% of turbidity and chemical oxygen demand were further removed. The study concluded a dual-purpose approach for the first time to synergistically combine biogas purification and water reclamation for anaerobic digestion system, which well addresses the downstream challenges of anaerobic digestion technology.

AB - A new multiple-stage treatment process was developed via integrating electrocoagulation with biogas pumping to simultaneously reclaim anaerobic digestion effluent and clean up biogas. The 1st stage of electrocoagulation treatment under the preferred reaction condition led to removal efficiencies of 30%, 81%, 37% and >99.9% for total solids, chemical oxygen demand, total nitrogen and total phosphorus, respectively. Raw biogas was then used as a reactant and pumped into the effluent to simultaneously neutralize pH of the effluent and remove H2S in the biogas. The 2nd stage of electrocoagulation treatment on the neutralized effluent showed that under the selected reaction condition, additional 60% and 10% of turbidity and chemical oxygen demand were further removed. The study concluded a dual-purpose approach for the first time to synergistically combine biogas purification and water reclamation for anaerobic digestion system, which well addresses the downstream challenges of anaerobic digestion technology.

KW - Anaerobic digestion

KW - Biogas purification

KW - Electrocoagulation

KW - Nutrient removal

KW - Water reclamation

UR - http://www.scopus.com/inward/record.url?scp=84919789168&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84919789168&partnerID=8YFLogxK

U2 - 10.1016/j.jhazmat.2014.10.009

DO - 10.1016/j.jhazmat.2014.10.009

M3 - Article

VL - 285

SP - 483

EP - 490

JO - Journal of Hazardous Materials

T2 - Journal of Hazardous Materials

JF - Journal of Hazardous Materials

SN - 0304-3894

ER -