Nedjai, Radhia and Alam, Md. Zahangir and Al Mamun, Abdullah (2026) Solid-state fermentation for production of bio-coagulant on rice bran using Candida utilis, Trichoderma sp., Phanerochaete chrysosporium for turbidity removal. IIUM Engineering Journal, 27 (2). pp. 1-14. ISSN 1511-788X E-ISSN 2289-7860
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Abstract
Solid-state fermentation is a microbial culture technique used to produce compounds and products of industrial interest. In this study, rice bran, a by-product of the rice processing industry, was used as a coagulant substrate for Candida utilis, Trichoderma sp., and Phanerochaete chrysosporium in solid-state fermentation (SSF). To the best of our knowledge, no study has reported the production of coagulants by Trichoderma sp. and Candida utilis. Moreover, no attempts have been made to utilize rice bran as a substrate for the production of coagulants in solid-state by these three microorganisms. Two different substrate proportions were used to produce natural coagulants. Bio-coagulants produced in this research were used to remove turbidity from the kaolin solution. The experiments were conducted with artificially turbid water and a conventional jar test apparatus. The findings demonstrate that Substrate 2, distinguished by its lower water content, exhibited the highest turbidity removal efficiency compared to Substrate 1, which possessed higher water content. Moreover, Trichoderma sp. showed a maximum turbidity removal of 71%. While the maximum turbidity removal by the coagulants produced from C. utilis and P. chrysosporium was 59 %. The microscopic observation of the microorganism’s growth on rice bran substrate has also been performed. It was revealed that the three microorganisms fully colonized the substrate surface. Further optimization of the SSF process parameters is expected to achieve efficient turbidity reduction in wastewater
| Item Type: | Article (Journal) |
|---|---|
| Uncontrolled Keywords: | Bio-Coagulant, Rice bran substrate, Large-scale, Solid-state fermentation, Turbidity removal |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TD Environmental technology. Sanitary engineering |
| Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): | Kulliyyah of Engineering Kulliyyah of Engineering > Department of Biotechnology Engineering Kulliyyah of Engineering > Department of Civil Engineering |
| Depositing User: | Dr. Radhia Nedjai |
| Date Deposited: | 16 Jun 2026 17:20 |
| Last Modified: | 16 Jun 2026 17:20 |
| Queue Number: | 2026-06-Q3658 |
| URI: | http://irep.iium.edu.my/id/eprint/129268 |
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