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Anaerobic biogas generation from sugar industry wastewaters in three-phase fluidized-bed bioreactor

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Title Anaerobic biogas generation from sugar industry wastewaters in three-phase fluidized-bed bioreactor
 
Creator Hossain, Sk Masud
Anantharaman, N
Das, Manas
 
Subject Activated bacteria
Anaerobic
Biogas
Biomethanation
Fluidized- bed
Methane
 
Description 58-64
The studies are undertaken to develop an effective anaerobic continuous digestion process for biogas generation from sugar industry wastewaters using actively digested sludge from a sewage plant, in three-phase fluidized bed bioreactor. Attempts are made to optimize hydraulic retention time (HRT), initial feed pH, feed temperature and flow rate of feed (organic loading rate) for maximum production of methane gas and maximum removal of chemical oxygen demand (COD) and biological oxygen demand (BOD) of sugar industry wastewaters. The optimum conditions for the system are: digestion time, 8 h; initial pH of feed, 7.5; feed temperature, 40ºC; feed flow rate, 14 L/ min with maximum organic loading rate (OLR), 39.513 kg COD m⁻³ h⁻¹. The organic loading rates (OLR) are calculated on the basis of COD inlet in the bioreactor at different flow rates. The maximum expansion of the bed is observed as 23.67 m at optimum feed flow rate of 14 L/ min. The maximum methane gas concentration is 63.56% (v/v) of the total biogas generation at optimum process parameters. The maximum biogas yield rate is 0.835 m³ /kg COD m⁻³ h⁻¹ with maximum methane gas yield rate of 0.530 m³ /kg COD m⁻³ h⁻¹ (63.56% v/v) at optimum process parameters. The values for maximum reduction of COD and BOD are 76.82% (w/w) and 81.65% (w/w) with maximum OLR of 39.513 kg COD m⁻³ h⁻¹ at optimum conditions.
 
Date 2009-02-19T11:05:21Z
2009-02-19T11:05:21Z
2009-01
 
Type Article
 
Identifier 0971–457X
http://hdl.handle.net/123456789/3218
 
Language en_US
 
Publisher CSIR
 
Source IJCT Vol.16(1) [January 2009]