Anwar, Ahmad and Rumana, Ghufran (2014) Evaluation of the Bio-Kinetics of Cement Kiln Dust In An Upflow Anaerobic Sludge Blanket Reactor for Treatment of Palm Oil Mill Effluent As A Function of Hydraulic Retention Time. Separation and Purification Technology, 133. pp. 129-137. ISSN 1383-5866. (Published)
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Evaluation Of The Bio-Kinetics Of Cement Kiln Dust In An Upflow Anaerobic Sludge Blanket Reactor For Treatment Of Palm Oil Mill Effluent As A Function Of Hydraulic Retention Time.pdf - Published Version Download (59kB) | Preview |
Abstract
In this paper we operated an upflow anaerobic sludge blanket reactor (UASBR) continuously at 35 °C in order to observe the effects of varying the hydraulic retention time (HRT) from 3.5 to 34.5 d and varying the organic loading rate (OLR) from 1.5 to 46 kg COD m−3 d−1. The pH of the digester improved, which we varied from 1.5 to 14.5 g L−1 CaO-CKD, a range pH 7.5. A high COD degradation rate of 97% and mixed liquor suspended solids (MLVSS) of 99,000 mg L−1 were achieved at an HRT of 24.5 d. The maximum methane yield was 0.346 l CH4/g CODremoved. A CO2 reduction of 87% was obtained at an OLR of 26.5 (r = 0.99). The optimum conditions for digestion of the palm oil mill effluent were determined by studying the bio-kinetics of granulation. The growth yield (YG) was 1.45 g VSS/g CODremoved day; the specific biomass decay (b) was 0.056; the specific biomass growth rate (μmax) was 0.988 d−1; the saturation constant (Ks) was 460; and the critical retention time (Θc) was 2.464 d−1. With a feed flow rate (QF) of 1.65 l/d, the upflow velocity (Vup) was 0.6 m/h, and for a QF of 2.45 l/d, Vup was 0.75 m/h.
| Item Type: | Article |
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| Uncontrolled Keywords: | Bio-kinetics; Hydraulic retention time; Granules; Biogas; CO2 reduction |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
| Faculty/Division: | Faculty of Civil Engineering & Earth Resources |
| Depositing User: | Mrs. Neng Sury Sulaiman |
| Date Deposited: | 17 Dec 2014 08:08 |
| Last Modified: | 12 Jan 2016 03:47 |
| URI: | http://umpir.ump.edu.my/id/eprint/7383 |
| Download Statistic: | View Download Statistics |
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