Cheng, Yoke Wang and Chong, Chi Cheng and Lee, Soon Poh and Lim, Jun Wei and Wu, Ta Yeong and Cheng, C. K. (2020) Syngas from palm oil mill effluent (POME) steam reforming over lanthanum cobaltite : effects of net-basicity. Renewable Energy, 148. pp. 349-362. ISSN 0960-1481. (Submitted) (Submitted)
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Abstract
Steam reforming (SR) of palm oil mill effluent (POME) over net-basic LaCoO3 was optimised for syngas production (FSyngas) and degradation efficacies (XP) by tuning temperature (T), POME flow rate (V˙POME), catalyst weight (Wcat), and particle size (dcat). Net-basicity of LaCoO3 facilitated the adsorption of Lewis acid CO2, thereby assisted carbon removal via reverse Boudouard reaction. POME SR over LaCoO3 was promoted by using (i) higher T (endothermicity), (ii) greater V˙POME (larger partial pressure at constant weight-hourly-space-velocity and total feed rate), (iii) larger Wcat (longer residence time for POME vapour), and (iv) smaller dcat (higher surface area to volume ratio). Nevertheless, the catalytic activity of LaCoO3 declined with (i) severe coking and sintering deactivation (T≥973 K), (ii) carbon-encapsulation (V˙POME = 0.10 mL/min), (iii) agglomeration (Wcat>0.3 g), and (iv) pore occlusion (dcat<74 μm). Hence, the optimum conditions of POME SR over LaCoO3 were T = 873 K, V˙POME = 0.09 mL/min, Wcat = 0.3 g, and dcat = 74–105 μm. The optimised process able to produce syngas at a rate of 86.60 μmol/min whilst degrading POME to a less polluted liquid condensate (COD = 435 mg/L and BOD5 = 62 mg/L).
| Item Type: | Article |
|---|---|
| Additional Information: | Indexed by Scopus |
| Uncontrolled Keywords: | Syngas generation; Palm oil mill effluent; Steam reforming; Wastewater valorisation |
| Subjects: | T Technology > TP Chemical technology |
| Faculty/Division: | Faculty of Chemical & Natural Resources Engineering Faculty of Industrial Sciences And Technology Institute of Postgraduate Studies |
| Depositing User: | Mrs Norsaini Abdul Samat |
| Date Deposited: | 15 Oct 2020 02:34 |
| Last Modified: | 15 Oct 2020 02:34 |
| URI: | http://umpir.ump.edu.my/id/eprint/27738 |
| Download Statistic: | View Download Statistics |
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