title: Key factors affecting on bio-hydrogen production from co-digestion of organic fraction of municipal solid waste and kitchen wastewater.
abstract: The effects of sludge residence time (SRT) and dilution ratio (DR) on the continuous H2 production (HP) from co-digestion of organic fraction of municipal solid waste (OFMSW) and kitchen wastewater (KWW) via mesophilic anaerobic baffled reactor (ABR) was investigated. Increasing DR from 1:2 to 1:3 significantly (P<0.1) increased the H2 yield (HY) from 116.5±76 to 142.5±54 ml H2/g CODremoved d, respectively. However, at a DR of 1:4, the HY was dropped to 114.5±65 ml H2/g CODremoved d. Likewise, HY increased from 83±37 to 95±24 ml H2/g CODremoved d, when SRT increased from 3.6 to 4.0 d. Further increase in HY of 148±42 ml H2/g CODremoved d, was occurred at a SRT of 5.6d. Moreover, hydrogen fermentation facilitated carbohydrate, lipids, protein and volatile solids removal efficiencies of 87±5.8%, 74.3±9.12%, 76.4±11.3% and 84.8±4.1%, respectively.
authors.affiliation: Egypt-Japan University of Science and Technology (E-Just), Environmental Engineering Department, P.O. Box 179, New Borg El Arab City, 21934 Alexandria, Egypt. Electronic address: ahmed.tawfik@ejust.edu.eg.
authors.forename: Ahmed
authors.initials: A
authors.lastname: Tawfik
authors.affiliation: National Research Center, Water Pollution Research Department, El-Tahrir St., P.O. Box 12622, Dokki, Cairo, Egypt.
authors.forename: Mohamed
authors.initials: M
authors.lastname: El-Qelish
mesh_terms: D000085:Acetates / Q000378:metabolism; D056804:Biofuels; D057919:Biological Oxygen Demand Analysis; D002087:Butyrates / Q000378:metabolism; D002241:Carbohydrates / Q000032:analysis; D005591:Chemical Fractionation; D005232:Fatty Acids, Volatile / Q000032:analysis; D005285:Fermentation; D006859:Hydrogen / Q000378:metabolism*; D008055:Lipids / Q000032:analysis; D009930:Organic Chemicals / Q000737:chemistry*; D011506:Proteins / Q000032:analysis; D012037:Refuse Disposal / Q000379:methods*; D012722:Sewage / Q000737:chemistry; D062611:Solid Waste; D013997:Time Factors; D014835:Volatilization; D062065:Wastewater / Q000737:chemistry*
chemical_list: D000085:Acetates; D056804:Biofuels; D002087:Butyrates; D002241:Carbohydrates; D005232:Fatty Acids, Volatile; D006859:Hydrogen; D008055:Lipids; D009930:Organic Chemicals; D011506:Proteins; D012722:Sewage; D062611:Solid Waste; D062065:Wastewater
keywords: Anaerobic baffled reactor; Hydrogen; Kitchen wastewater; Organic fraction of municipal solid waste