Ali, Sharifah Nazura Syed Sabeer and Omar, Rozita and Man, Hasfalina Che and Idris, Aida Isma Mohamad and Tajuddin, Hairul Anuar and Mahat, Siti Baizura and Abdullah, Luqman Chuah (2023) Two-stage anaerobic digestion using protein-rich synthetic wastewater inoculated with anaerobic sludge. Desalination and Water Treatment, 302. pp. 82-90. ISSN 1944-3994, DOI https://doi.org/10.5004/dwt.2023.29783.
Full text not available from this repository.Abstract
Foam and scum have impacted digestion, causing process disturbances in several industries. The cause of foam and scum is difficult to determine as there are complex compounds in wastewater. Proteins are the primary compound found in food processing industries wastewater. This study investigates the effect of protein concentration on foaming and scum formation using protein-rich synthetic wastewater in a two-stage anaerobic digester inoculated with anaerobic sludge. The protein concentration in the digester was altered using gelatine as a protein source. The foaming tendency, scum production, biogas production, protein, and chemical oxygen demand (COD) removal, total volatile fatty acid (TVFA) concentration, and ammoniacal nitrogen (AN) concentration were measured to comprehend the findings. The results show no foaming and scum in the digester; however, sludge residue was present at high protein concentrations. The Fourier transform infrared spectroscopy analysis revealed that the residue contained sludge and protein. The biogas production began to decrease at the protein concentration of 12 g/L. The TVFA and AN increased steadily with an increase in protein concentration in Tank 1, while the protein and COD removal percentage was higher in Tank 2.
| Item Type: | Article |
|---|---|
| Funders: | Universiti Putra Malaysia under Geran Putra Inisiatif Putra Siswazah (GP-IPS) (GP-IPS/2022/9723400) |
| Uncontrolled Keywords: | Anaerobic digestion; Scum; Anaerobic sludge; Foaming; Protein |
| Subjects: | Q Science > QD Chemistry T Technology > TP Chemical technology |
| Divisions: | Faculty of Science > Department of Chemistry |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 11 Sep 2025 07:37 |
| Last Modified: | 11 Sep 2025 07:37 |
| URI: | http://eprints.um.edu.my/id/eprint/50567 |
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