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Anaerobic digestion of acid cheese w...

Ramkumar, David Romesh.

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Anaerobic digestion of acid cheese whey with pH control.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Anaerobic digestion of acid cheese whey with pH control./
Author:	Ramkumar, David Romesh.
Description:	324 p.
Notes:	Adviser: A. E. Ghaly.
Contained By:	Masters Abstracts International34-02.
Subject:	Agriculture, Food Science and Technology. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=MM99764
ISBN:	9780315997646

Anaerobic digestion of acid cheese whey with pH control.
Ramkumar, David Romesh.

Anaerobic digestion of acid cheese whey with pH control. - 324 p.

Adviser: A. E. Ghaly.

Thesis (M.A.Sc.)--Technical University of Nova Scotia (Canada), 1995.

The effect of controlling the pH of the second chamber of a two-stage, 150 L anaerobic digester utilising cheese whey on the quality and quantity of biogas and the pollution potential reduction was investigated. The experimental apparatus consisted of a two-stage digester, a feeding system, a temperature measurement and control system, a pH measurement and control system, a biogas cleanup and measurement system, a liquid sampler and a data acquisition system. A computer program was written and used to monitor and control the digester.

ISBN: 9780315997646Subjects--Topical Terms:

1017813
Agriculture, Food Science and Technology.

Anaerobic digestion of acid cheese whey with pH control.
LDR:02603nam 2200289 a 45 001 973385
005 20110928
008 110928s1995 eng d
020 $a 9780315997646
035 $a (UMI)AAIMM99764
035 $a AAIMM99764
040 $a UMI $c UMI
100 1 $a Ramkumar, David Romesh. $3 1297337
245 1 0 $a Anaerobic digestion of acid cheese whey with pH control.
300 $a 324 p.
500 $a Adviser: A. E. Ghaly.
500 $a Source: Masters Abstracts International, Volume: 34-02, page: 0633.
502 $a Thesis (M.A.Sc.)--Technical University of Nova Scotia (Canada), 1995.
520 $a The effect of controlling the pH of the second chamber of a two-stage, 150 L anaerobic digester utilising cheese whey on the quality and quantity of biogas and the pollution potential reduction was investigated. The experimental apparatus consisted of a two-stage digester, a feeding system, a temperature measurement and control system, a pH measurement and control system, a biogas cleanup and measurement system, a liquid sampler and a data acquisition system. A computer program was written and used to monitor and control the digester.
520 $a The results indicated that operating the digester without pH control resulted in a low pH which inhibited the methanogenic bacteria. The inhibition was irreversible and the digester did not recover (no methane production) when the pH was restored to 7.0 without reseeding even though the gas production increased, which was a false indication of recovery as the gas was mainly carbon dioxide. The addition of base resulted in a total alkalinity (titrated to pH 4.5) of 12,000 mg/L as CaCO$\sb3$. The biogas production was 62.6 and 45.0 L/d and the methane content was 60.7 and 40.0% when the system was reseeded and the pH controlled by sodium hydroxide and sodium bicarbonate addition, respectively. Reductions in total solids of 27.3 and 37.4%, in chemical oxygen demand of 30.4 and 39.8%, in total Kjeldahl nitrogen of 23.3% and 33.6% were obtained using sodium hydroxide and sodium bicarbonate, respectively. The ammonium nitrogen content increased significantly with reseeding the digester and controlling the pH by 140 and 125% for sodium hydroxide and sodium bicarbonate, respectively. The total volatile acid concentration (as mg/L acetic acid) was high. (Abstract shortened by UMI.)
590 $a School code: 0300.
650 4 $a Agriculture, Food Science and Technology. $3 1017813
650 4 $a Engineering, Agricultural. $3 1019504
690 $a 0359
690 $a 0539
710 2 0 $a Technical University of Nova Scotia (Canada). $3 1297338
773 0 $t Masters Abstracts International $g 34-02.
790 $a 0300
790 1 0 $a Ghaly, A. E., $e advisor
791 $a M.A.Sc.
792 $a 1995
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=MM99764