+ Site Statistics
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on LinkedInFollow on LinkedIn

+ Translate

Treatment efficiency and VFA composition of a thermophilic anaerobic contact reactor treating food industry wastewater

Treatment efficiency and VFA composition of a thermophilic anaerobic contact reactor treating food industry wastewater

Journal of Hazardous Materials 176(1-3): 843-848

The objective of this study was to examine the effects of organic loading rate and hydraulic retention time on volatile fatty acid composition and treatment efficiency of high rate thermophilic anaerobic contact reactor (TACR) treating potato-chips wastewaters. The operational performance of TACR was monitored from start-up by assessing chemical oxygen demand (COD) removal efficiencies, volatile fatty acid (VFA) production and biogas composition. The reactor was studied at different organic loading rates (OLRs) ranging from 0.6 to 8 kg COD/m3 d. The COD removal efficiencies were found to be 86-97% and the methane percentage of the biogas produced was 68-89% during the OLRs studied. The approximate methane yield was found to be 0.42 m3 CH4/kg CODremoved. The major intermediate products of anaerobic digestion were acetate, propionate, iso-butyrate, butyrate, iso-valerate, valerate, iso-caproate and caproate. The use of thermophilic anaerobic contact reactor offers a sustainable technology for the treatment of potato-chips wastewaters since high COD removal efficiencies and high methane percentage in the biogas produced can be attained even at high OLRs.

(PDF same-day service: $19.90)

Accession: 035980146

Download citation: RISBibTeXText

PMID: 20022175

DOI: 10.1016/j.jhazmat.2009.11.113

Related references

Anaerobic treatment performance and microbial population of thermophilic upflow anaerobic filter reactor treating awamori distillery wastewater. Journal of Bioscience and Bioengineering 104(4): 281-287, 2007

Kinetic evaluation and performance of a mesophilic anaerobic contact reactor treating medium-strength food-processing wastewater. Bioresource Technology 101(11): 3970-3977, 2010

Enumeration and isolation of facultative anaerobic bacteria in an upflow anaerobic sludge blanket reactor treating wastewater from a gelatine industry. Acta Scientiarum Biological Sciences 25(2): 257-260, 2003

Pilot-plant study on anaerobic treatment of a lipid- and protein-rich food industrial wastewater by a thermophilic multi-staged UASB reactor. Water Science and Technology 45(10): 225-230, 2002

Performance and energy economics of mesophilic and thermophilic digestion in anaerobic hybrid reactor treating coal wastewater. Bioresource Technology 127: 9-17, 2013

Performance and microbial community profiles in an anaerobic reactor treating with simulated PTA wastewater: from mesophilic to thermophilic temperature. Water Research 61: 57-66, 2015

Impact of high external circulation ratio on the performance of anaerobic reactor treating coal gasification wastewater under thermophilic condition. Bioresource Technology 192: 507-513, 2016

Microbial populations of an upflow anaerobic sludge blanket reactor treating wastewater from a gelatin industry. Environmental Technology 22(12): 1477-1485, 2002

Performance evaluation of an anaerobic baffled reactor treating wheat flour starch industry wastewater. 2007

Anaerobic treatment of a recalcitrant distillery wastewater by a thermophilic UASB reactor. Bioresource Technology 55(3): 215-221, 1996

Treatment of fruit-juice industry wastewater in a two-stage anaerobic hybrid (AH) reactor system followed by a sequencing batch reactor (SBR). Environmental Technology 33(4-6): 429-436, 2012

Anaerobic treatment of sugar industry wastewater by Upflow anaerobic sludge blanket reactor at ambient temperature. 2012

Treatment of distillery wastewater using a thermophilic high-rate hybrid anaerobic reactor in industrial scale. Journal of Microbiology & Biotechnology 9(6): 737-743, 1999

Effect of changes in composition of methanogenic species on performance of a membrane anaerobic reactor system treating brewery wastewater. Environmental Technology 16(10): 901-914, 1995

Efficiency influence of exogenous betaine on anaerobic sequencing batch biofilm reactor treating high salinity mustard tuber wastewater. Environmental Technology 33(13-15): 1695-1699, 2013