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Study of thermophilic anaerobic cleaning systems; Studier av termofila anaeroba reningssystem

Technical Report:

Abstract

The aim of this study was to indicate how mesophile and thermophilic anaerobic systems differ in their capacity to degrade persistent organic compounds. The experiments were carried out in semi-batch lab.scale reactors working at 35, 55 and 70 degrees C and were evaluated by recording pH, COD, TSS, redox potential, fatty acids, gas production, methane concentration and the concentration of specific organic compounds. Totally, seven different reactors and four different specific organic compounds were used in this study. The microbial activity within the semi-batch reactors showed a pronounced tendency to oscillate in an irregular and unpredictable way. This behaviour stressed the difficulties in running the decided experiments. These experiences are unfortunately confirmed by many other investigators within the present field. The results do not indicate differences between mesophile and thermophilic anaerobic reactors in terms of `not degradable-degradable` but only as differences in degree of degradation rates. 6-chlorovanillin and 3,5-dinitrobenzoic acid showed increasing degradation rate in the thermophilic range while no differences could be detected for 4,5-dichloroguaiacol. In the case of {beta}-sitosterol the mesophile reference reactor crash. 14 refs, 6 figs, 3 tabs
Publication Date:
Nov 01, 1994
Product Type:
Technical Report
Report Number:
IVL-B-1158
Reference Number:
SCA: 550000; PA: SWD-94:007498; EDB-95:017299; SN: 95001301696
Resource Relation:
Other Information: PBD: Nov 1994
Subject:
59 BASIC BIOLOGICAL SCIENCES; WATER POLLUTION CONTROL; ANAEROBIC DIGESTION; ORGANIC COMPOUNDS; MESOPHILIC CONDITIONS; THERMOPHILIC CONDITIONS; BIODEGRADATION; WASTE WATER; BENCH-SCALE EXPERIMENTS; 550000; BIOMEDICAL SCIENCES, BASIC STUDIES
OSTI ID:
10105773
Research Organizations:
Swedish Environmental Research Inst., Stockholm (Sweden)
Country of Origin:
Sweden
Language:
Swedish
Other Identifying Numbers:
Other: ON: DE95723962; TRN: SE9407498
Availability:
OSTI; NTIS
Submitting Site:
SWD
Size:
18 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Boman, B, and Davisson, G. Study of thermophilic anaerobic cleaning systems; Studier av termofila anaeroba reningssystem. Sweden: N. p., 1994. Web.
Boman, B, & Davisson, G. Study of thermophilic anaerobic cleaning systems; Studier av termofila anaeroba reningssystem. Sweden.
Boman, B, and Davisson, G. 1994. "Study of thermophilic anaerobic cleaning systems; Studier av termofila anaeroba reningssystem." Sweden.
@misc{etde_10105773,
title = {Study of thermophilic anaerobic cleaning systems; Studier av termofila anaeroba reningssystem}
author = {Boman, B, and Davisson, G}
abstractNote = {The aim of this study was to indicate how mesophile and thermophilic anaerobic systems differ in their capacity to degrade persistent organic compounds. The experiments were carried out in semi-batch lab.scale reactors working at 35, 55 and 70 degrees C and were evaluated by recording pH, COD, TSS, redox potential, fatty acids, gas production, methane concentration and the concentration of specific organic compounds. Totally, seven different reactors and four different specific organic compounds were used in this study. The microbial activity within the semi-batch reactors showed a pronounced tendency to oscillate in an irregular and unpredictable way. This behaviour stressed the difficulties in running the decided experiments. These experiences are unfortunately confirmed by many other investigators within the present field. The results do not indicate differences between mesophile and thermophilic anaerobic reactors in terms of `not degradable-degradable` but only as differences in degree of degradation rates. 6-chlorovanillin and 3,5-dinitrobenzoic acid showed increasing degradation rate in the thermophilic range while no differences could be detected for 4,5-dichloroguaiacol. In the case of {beta}-sitosterol the mesophile reference reactor crash. 14 refs, 6 figs, 3 tabs}
place = {Sweden}
year = {1994}
month = {Nov}
}