Effect of temperature and organic loading rate on upflow anaerobic sludge blanket reactor and CH4 production by treating liquidized food waste

Anaerobic treatment of liquidized food waste (LFW) was carried out in an upflow anaerobic sludge blanket reactor (UASBR) by stepwise increase in organic loading rate (OLR) and temperature. The chemical oxygen demand (COD), total organic carbon (TOC), biogas and methane production were measured at hydraulic retention time (HRT) of 10 to 4d, and start up strategy of the reactor was monitored for 10 weeks. Thermophilic condition was achieved by increasing the temperature from 30 to 55°C, and pH was maintained at 7 ± 0.5 throughout the experiment. Maximum COD removal efficiency was 93.67% (r = 0.84) at an OLR of 12.5 g-COD/L·d and 4d HRT. Maximum TOC removal efficiency was 79.14% (r = −0.94) at an influent TOC concentration of 3.59 g/L. Biogas and methane yield were recorded to a maximum of 1.364 L/g-CODremoved·d (r = 0.81), 0.912 L/g-CODremoved·d (r = 0.83), and average methane content of biogas was 63%. The reactor was fully acclimatized at 55°C and achieved stability with high removal efficiency and biogas production. An OLR of 12.5 g-COD/L·d and HRT of 4 days were suitable for the treatment of LFW in UASBR. The treatment process can also be extendable for more than 10 weeks without any measurable problem. © 2011 American Institute of Chemical Engineers Environ Prog, 2012

[1]  Hassan Basri,et al.  Estimation of methane emission from landfills in Malaysia using the IPCC 2006 FOD Model. , 2010 .

[2]  M Massoud,et al.  Methane emissions from wastewater management. , 2001, Environmental pollution.

[3]  Mohammed F.M. Abushammala,et al.  Review on landfill gas emission to the atmosphere , 2009 .

[4]  F. G. Pohland,et al.  Design of anaerobic processes for the treatment of industrial and municipal wastes , 1992 .

[5]  B. Mattiasson,et al.  The energy balance in farm scale anaerobic digestion of crop residues at 11–37 °C , 2007 .

[6]  Scientific aspects of the framework convention on climate change and national greenhouse gas inventories , 1995, Environmental monitoring and assessment.

[7]  J. M. González,et al.  Performance and microbial communities of a continuous stirred tank anaerobic reactor treating two-phases olive mill solid wastes at low organic loading rates. , 2006, Journal of biotechnology.

[8]  T. Toda,et al.  Effect of temperature on VFA's and biogas production in anaerobic solubilization of food waste. , 2009, Waste management.

[9]  Masato Yamada,et al.  Estimation of methane emission from whole waste landfill site using correlation between flux and ground temperature , 2005 .

[10]  Michel Roustan,et al.  Methane yield as a monitoring parameter for the start-up of anaerobic fixed film reactors. , 2002, Water research.

[11]  S Uyanik,et al.  Granule development in a split-feed anaerobic baffled reactor. , 2003, Bioresource technology.

[12]  Edgar Fernando Castillo M,et al.  Study of the operational conditions for anaerobic digestion of urban solid wastes. , 2006, Waste management.

[13]  Hang-Sik Shin,et al.  UASB TREATMENT OF WASTEWATER WITH VFA AND ALCOHOL GENERATED DURING HYDROGEN FERMENTATION OF FOOD WASTE , 2005 .

[14]  Sergey Kalyuzhnyi,et al.  Anaerobic treatment of raw and preclarified potato-maize wastewaters in a USAB reactor , 1998 .

[15]  T. Ogi,et al.  Treatment of liquid fraction separated from liquidized food waste in an upflow anaerobic sludge blanket reactor. , 1999, Journal of bioscience and bioengineering.

[16]  A. Rinzema,et al.  High rate anaerobic waste water treatment using the UASB-reactor under a wide range of temperature conditions , 1984 .

[17]  M Christophersen,et al.  Lateral gas transport in soil adjacent to an old landfill: factors governing emissions and methane oxidation , 2001, Waste management & research : the journal of the International Solid Wastes and Public Cleansing Association, ISWA.

[18]  John F. Kennedy,et al.  Studies on the use of an anaerobic baffled reactor for the continuous anaerobic digestion of pulp and paper mill black liquors , 1999 .

[19]  Yutaka Dote,et al.  PHASE CHANGING OF GARBAGE FROM SOLID TO LIQUID SLURRY BY THERMAL LIQUIDIZATION , 1995 .

[20]  H. W. Yu,et al.  Energy recovery from grass using two-phase anaerobic digestion. , 2002, Waste management.

[21]  F. Benyahia,et al.  Mass transfer and kinetic studies under no cell growth conditions in nitrification using alginate gel immobilized Nitrosomonas , 2005 .

[22]  S. R. Harper,et al.  Recent developments in hydrogen management during anaerobic biological wastewater treatment. , 1986, Biotechnology and bioengineering.

[23]  M. S. Rao,et al.  Bioenergy conversion studies of organic fraction of MSW: kinetic studies and gas yield--organic loading relationships for process optimisation. , 2004, Bioresource technology.

[24]  Hans Schnitzer,et al.  Sustainable solutions for solid waste management in Southeast Asian countries. , 2009, Waste management.

[25]  Tomoaki Minowa,et al.  Thermochemical Liquidization and Anaerobic Treatment of Kitchen Garbage , 1997 .