Hydrolysis of settleable substrate in domestic sewage

Didem Okutman; Süleyman Övez; Derin Orhon

doi:10.1023/A:1013737901624

Hydrolysis of settleable substrate in domestic sewage

Didem Okutman, Süleyman Övez, Derin Orhon^*

^*Corresponding author for this work

Department of Environmental Engineering

Istanbul Technical University

Research output: Contribution to journal › Article › peer-review

35 Citations (Scopus)

Abstract

The hydrolysis of settleable substrate in domestic sewage was evaluated using its O₂ utilization rate profile generated in an aerated batch reactor. The hydrolysis rate coefficient was 1.2 d^-1, significantly lower than 3.8 d^-1 and 1.9 d^-1 characterizing soluble and suspended slowly biodegradable fractions. The settled portion of the sewage incorporated an active biomass fraction of 1560 mg COD 1^-1 that needed to be accounted for in the hydrolysis kinetics. The texture of the biomass/settled substrate mixture and the gradual hydrolysis of the particulate substrate within the floc structure were examined by microscopic analysis.

Original language	English
Pages (from-to)	1907-1914
Number of pages	8
Journal	Biotechnology Letters
Volume	23
Issue number	23
DOIs	https://doi.org/10.1023/A:1013737901624
Publication status	Published - 2001

Funding

This study was conducted as part of the sponsored research activities of The Environmental Biotechnology Center of the Scientific and Technical Research Council of Turkey. The Research and Development Fund of the Istanbul Technical University also supported it.

Funders	Funder number
Türkiye Bilimsel ve Teknolojik Araştirma Kurumu
Istanbul Teknik Üniversitesi

Keywords

Domestic sewage
Hydrolysis
Modeling
O uptake rate
Settleable substrate

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AU - Okutman, Didem

AU - Övez, Süleyman

AU - Orhon, Derin

PY - 2001

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AB - The hydrolysis of settleable substrate in domestic sewage was evaluated using its O2 utilization rate profile generated in an aerated batch reactor. The hydrolysis rate coefficient was 1.2 d-1, significantly lower than 3.8 d-1 and 1.9 d-1 characterizing soluble and suspended slowly biodegradable fractions. The settled portion of the sewage incorporated an active biomass fraction of 1560 mg COD 1-1 that needed to be accounted for in the hydrolysis kinetics. The texture of the biomass/settled substrate mixture and the gradual hydrolysis of the particulate substrate within the floc structure were examined by microscopic analysis.

KW - Domestic sewage

KW - Hydrolysis

KW - Modeling

KW - O uptake rate

KW - Settleable substrate

UR - https://www.scopus.com/pages/publications/0035210549

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VL - 23

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JO - Biotechnology Letters

JF - Biotechnology Letters

IS - 23

ER -

Hydrolysis of settleable substrate in domestic sewage

Abstract

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Keywords

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