FORMATION OF ORGANIC ACIDS AND AMMONIA DURING ACIDOGENESIS OF TROUT-PROCESSINGWASTEWATER
Abstract
A set of experiments was carried out to characterize trout-processing wastewater and to investigate biologicalacidification (acidogenesis) of the wastewater. Based on individual amino acids analysis and stoichiometric calculations,protein was a major organic material which composed 92.9% of chemical oxygen demand (COD) in the wastewater.Three concentrations of COD set up in a ratio of 1:4:9 made by dilution of raw wastewater (11.4, 45.7, and 102.7 gCOD/L) were tested for acidogenesis in batch mode. Production of acetate, propionate, isobutyrate, butyrate,methylbutyrate, and valerate was monitored. Acetate production was predominant in all treatments, and amounts ofacetate and butyrate were proportional only to the initial wastewater strength. The formation of odd-chain organic acids(propionate, methylbutyrate, and valerate) increased with decreasing initial wastewater strength. Based on stoichiometriccalculations, total conversions of organics in the wastewater to short-chain organic acids at initial COD concentrationsset up in a ratio of 9:4:1 were respectively 52.1%, 74%, and 79.6%.
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- Authors
- Hwang, S., & Hansen, C. L.
- ORCID
- S. Hwang
- Venue
- Transactions of the ASAE
- Published
- 1998
- Volume
- 41
- Issue
- 1
- Pages
- 151-156
- ISSN
- 0001-2351 (ISSN-L)
- 2151-0059
- OpenAlex
- W1994996038
- Cited by
- 21
- References
- 0
- Citations by year
- 2022: 1 · 2021: 1 · 2018: 1 · 2017: 1 · 2016: 2 · 2014: 2 · 2013: 3
- FWCI
- 4.53
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Transactions of the ASAE (publishedVersion)
- Open Access System for Information Sharing (Pohang University of Science and Technology) (submittedVersion)
- Topics
- Physical Sciences › Engineering › Building and Construction › Anaerobic Digestion and Biogas Production
- Physical Sciences › Environmental Science › Pollution › Wastewater Treatment and Nitrogen Removal
- Physical Sciences › Environmental Science › Waste Management and Disposal › Wastewater Treatment and Reuse
- Keywords
- acidogenesis, organic acids, ammonia formation, short-chain fatty acids, acetate, butyrate, propionate, valerate, isobutyrate, protein degradation, chemical oxygen demand, biological acidification, fish processing effluent
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