Ya'acob, Amirah and Zainol, N. and Aziz, Nor Hazwani (2022) Application of response surface methodology for COD and ammonia removal from municipal wastewater treatment plant using acclimatized mixed culture. Heliyon, 8 (6). pp. 1-7. ISSN 2405-8440. (Published)
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Abstract
This study aimed to optimize conditions influencing the removal of chemical oxygen demand (COD) and ammonia-N in municipal wastewater by using acclimatized mixed culture (AMC). Two-level factorial analysis was used to investigate the factors affecting the degradation of COD and ammonia-N (%); ratio of synthetic wastewater (SW) to acclimatized mixed culture (AMC) (1:1 and 3:1), presence and absence of support media (Yes and No), agitation (0 rpm and 100 rpm) and hydraulic retention time (HRT) (2 and 5 days). A central composite design (CCD) under response surface methodology (RSM) determined the optimum agitation (0 rpm and 100 rpm) and retention time (2 and 5 days). The best conditions were at 3:1 of SW: AMC ratio, 100 rpm agitation, without support media, and 5 days retention time. COD and ammonia-N removal achieved until 57.23% and 43.20%, respectively. Optimization study showed the optimum conditions for COD and ammonia-N removal were obtained at 150 rpm agitation speed and 5 days of retention time, at 70.41% and 64.29% respectively. This study discovers the conditions that affect the COD and ammonia-N removal in the municipal wastewater using acclimatized mixed culture.
| Item Type: | Article |
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| Additional Information: | Indexed by Scopus |
| Uncontrolled Keywords: | Ammonia-N; Biological treatment; COD; Mixed culture; Municipal wastewater; Response surface methodology |
| Subjects: | Q Science > QD Chemistry T Technology > TA Engineering (General). Civil engineering (General) T Technology > TP Chemical technology |
| Faculty/Division: | Institute of Postgraduate Studies College of Engineering Centre of Excellence: Earth Resources & Sustainability Centre (ERAS) |
| Depositing User: | Mr Muhamad Firdaus Janih@Jaini |
| Date Deposited: | 07 Oct 2022 08:19 |
| Last Modified: | 07 Oct 2022 08:19 |
| URI: | http://umpir.ump.edu.my/id/eprint/35131 |
| Download Statistic: | View Download Statistics |
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