Alternative electron acceptors in microbial coal-conversion wastewater treatment
- Resource Type
- Authors
- Peter Kuschk; U. Stottmeister; F. Becker; Frank Eismann
- Source
- Applied Microbiology and Biotechnology. 46:604-609
- Subject
- chemistry.chemical_classification
Methanogenesis
chemistry.chemical_element
General Medicine
Electron acceptor
Applied Microbiology and Biotechnology
chemistry.chemical_compound
Nitrate
chemistry
Biotransformation
Wastewater
Environmental chemistry
Organic chemistry
Sewage treatment
Phenols
Carbon
Biotechnology
- Language
- ISSN
- 1432-0614
0175-7598
Biotreatment experiments with solutions of autoxidized phenolic compounds as well as coal-conversion wastewater stored for 30 years and rich in humic matter were performed under nitrate-reducing, sulphate-reducing and methanogenic conditions. The removal of total organic carbon in fractions of different molecular mass and of monomeric phenolic compounds in the wastewater was determined. A comparison of biotransformation potentials and rates indicated a relationship between these aspects and the availability of electron acceptors in the system. The capacities of the microbial consortia increased significantly with the energy microorganisms could gain from their respective respiration process and can be expressed by the order: aerobic process – nitrate reduction – sulphate reduction – methanogenesis.