Influence of Various Factors on Hydrolytic Enzyme Activity and COD Removal Efficiency in Cassava Starch Wastewater by Marine Actinomycete Streptomyces sp. A1-3

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dc.contributor.authorMaliwan Kutako
dc.contributor.authorPattana Sillapachai
dc.contributor.authorYutthaya Yuyen
dc.contributor.authorPaveena Tapaneeyaworawong
dc.contributor.authorNisa Siranonthana
dc.contributor.authorNongnuch Rungsawang
dc.contributor.authorJanjarus Watanachote
dc.date.accessioned2025-04-21T06:38:08Z
dc.date.available2025-04-21T06:38:08Z
dc.date.issued2024-04-30
dc.description.abstractWastewater from the production line of cassava starch factories contains a significant amount of organic matter, necessitating treatment before discharging or reusing in the factory. Actinomycetes can produce various hydrolytic enzymes, especially carbohydrate-degrading enzymes, which are important in the biological wastewater treatment process because actinomycetes can utilize several growth substances such as sugar, polysaccharides and protein. In this research, the effects of carbon source, pH, salinity and incubation time on hydrolytic enzyme activity for producing reducing sugar of a marine actinomycete Streptomyces sp. A1-3 were evaluated. The maximum hydrolytic enzyme activity was found in the oatmeal yeast extract carboxymethyl cellulose (OYC) medium with a pH value of 4.0-6.2 and a cultivation time of 4 days. Salinities in the range of 0-35 practical salinity units (psu) had no effect on the hydrolytic enzyme activity of strain A1-3. Subsequently, the efficiency of Streptomyces sp. A1-3 in reducing the chemical oxygen demand (COD) in cassava starch wastewater was evaluated using a Completely Randomized Design (CRD). The control tank had no Streptomyces sp. A1-3, while in the treatment tank, strain A1-3 was added. Aeration was supplied throughout the 16-day experiment. Water samples were collected daily for COD analysis and to measure reducing sugar levels. Within the first 4 days, the efficiency of COD reduction by strain A1-3 was 50%, higher than that in the control tank. During days 7-9, the COD reduction value of strain A1-3 remained almost stable in the range of 58-63%. Adding NaCl
dc.description.sponsorshipSuan Dusit University
dc.identifier.issn2630-0311
dc.identifier.urihttps://repository.dusit.ac.th//handle/123456789/6291
dc.language.isoen
dc.publisherGraphicsite
dc.relation.ispartofseriesVol. 17 No. 1 (2024): January - April
dc.subjectCassava starch wastewater
dc.subjectCOD treatment
dc.subjectHydrolytic enzyme activity
dc.subjectMarine actinomycetes Streptomyces sp.
dc.titleInfluence of Various Factors on Hydrolytic Enzyme Activity and COD Removal Efficiency in Cassava Starch Wastewater by Marine Actinomycete Streptomyces sp. A1-3
dc.typeArticle
mods.location.urlhttps://li01.tci-thaijo.org/index.php/sdust/article/view/262380/179184
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