Synthesis of char-based acidic catalyst for methanolysis of waste cooking oil: an insight into a possible valorization pathway for the solid by-product of gasification
Gasification-based char from a commercial small-scale gasification plant was converted into an acidic catalyst for methanolysis of waste cooking oil (WCO). The char-based acidic catalyst was synthesized by the sulfonation of gasification char with sulfuric acid. Functional groups, acid density, morp...
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| Format: | Article |
| Language: | English |
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Elsevier
2018
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| Online Access: | http://psasir.upm.edu.my/id/eprint/74061/ http://psasir.upm.edu.my/id/eprint/74061/1/Synthesis%20of%20char-based%20acidic%20catalyst%20for%20methanolysis%20of%20waste%20cooking%20oil%20an%20insight%20into%20a%20possible%20valorization%20pathway%20for%20the%20solid%20by-product%20of%20gasification.pdf |
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| author | Ahmad, Junaid Rashid, Umer Patuzzi, Francesco Baratieri, Marco Yap, Taufiq Yun Hin |
| author_facet | Ahmad, Junaid Rashid, Umer Patuzzi, Francesco Baratieri, Marco Yap, Taufiq Yun Hin |
| author_sort | Ahmad, Junaid |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Gasification-based char from a commercial small-scale gasification plant was converted into an acidic catalyst for methanolysis of waste cooking oil (WCO). The char-based acidic catalyst was synthesized by the sulfonation of gasification char with sulfuric acid. Functional groups, acid density, morphological and surface properties were characterized and measured by using Fourier transform infrared red spectroscopy, ammonia temperature programmed desorption, field emission scanning electron microscope and Brunauer-Emmett-Teller, respectively. Wood char based acid catalyst showed higher surface area of 337 m2/g and acid density of 2.94 mmol/g. The reaction variables such as methanol/oil molar ratio, catalyst loading, reaction time and temperature, were studied. The optimum reaction conditions, 9:1 methanol/oil ratio, 6 wt% catalyst loadincxg, 130 min reaction time at 65 °C, gave 96% of ester conversion. The recovered catalyst was washed and reused without any activation (calcination), still giving 81% of ester conversion after five reaction cycles. Furthermore, fuel properties of WCO methyl esters were determined as per the ASTM and EN biodiesel standards. The utilization of char from biomass gasification for the synthesis of an acid catalyst for biodiesel production allows achieving a twofold objective. On the one side, the valorization of a material which is presently wasted. On the other side, the production of a catalyst that can effectively convert WCO into biodiesel in a single step process, therefore allowing a simplified procedure and lower operational temperatures. In addition, the obtained catalyst showed an interesting efficiency in decreasing free fatty acid of WCO and a considerable recyclability of the catalyst. |
| first_indexed | 2025-11-15T11:57:21Z |
| format | Article |
| id | upm-74061 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T11:57:21Z |
| publishDate | 2018 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-740612020-04-26T20:17:06Z http://psasir.upm.edu.my/id/eprint/74061/ Synthesis of char-based acidic catalyst for methanolysis of waste cooking oil: an insight into a possible valorization pathway for the solid by-product of gasification Ahmad, Junaid Rashid, Umer Patuzzi, Francesco Baratieri, Marco Yap, Taufiq Yun Hin Gasification-based char from a commercial small-scale gasification plant was converted into an acidic catalyst for methanolysis of waste cooking oil (WCO). The char-based acidic catalyst was synthesized by the sulfonation of gasification char with sulfuric acid. Functional groups, acid density, morphological and surface properties were characterized and measured by using Fourier transform infrared red spectroscopy, ammonia temperature programmed desorption, field emission scanning electron microscope and Brunauer-Emmett-Teller, respectively. Wood char based acid catalyst showed higher surface area of 337 m2/g and acid density of 2.94 mmol/g. The reaction variables such as methanol/oil molar ratio, catalyst loading, reaction time and temperature, were studied. The optimum reaction conditions, 9:1 methanol/oil ratio, 6 wt% catalyst loadincxg, 130 min reaction time at 65 °C, gave 96% of ester conversion. The recovered catalyst was washed and reused without any activation (calcination), still giving 81% of ester conversion after five reaction cycles. Furthermore, fuel properties of WCO methyl esters were determined as per the ASTM and EN biodiesel standards. The utilization of char from biomass gasification for the synthesis of an acid catalyst for biodiesel production allows achieving a twofold objective. On the one side, the valorization of a material which is presently wasted. On the other side, the production of a catalyst that can effectively convert WCO into biodiesel in a single step process, therefore allowing a simplified procedure and lower operational temperatures. In addition, the obtained catalyst showed an interesting efficiency in decreasing free fatty acid of WCO and a considerable recyclability of the catalyst. Elsevier 2018 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/74061/1/Synthesis%20of%20char-based%20acidic%20catalyst%20for%20methanolysis%20of%20waste%20cooking%20oil%20an%20insight%20into%20a%20possible%20valorization%20pathway%20for%20the%20solid%20by-product%20of%20gasification.pdf Ahmad, Junaid and Rashid, Umer and Patuzzi, Francesco and Baratieri, Marco and Yap, Taufiq Yun Hin (2018) Synthesis of char-based acidic catalyst for methanolysis of waste cooking oil: an insight into a possible valorization pathway for the solid by-product of gasification. Energy Conversion and Management, 158. 186 - 192. ISSN 0196-8904 10.1016/j.enconman.2017.12.059 |
| spellingShingle | Ahmad, Junaid Rashid, Umer Patuzzi, Francesco Baratieri, Marco Yap, Taufiq Yun Hin Synthesis of char-based acidic catalyst for methanolysis of waste cooking oil: an insight into a possible valorization pathway for the solid by-product of gasification |
| title | Synthesis of char-based acidic catalyst for methanolysis of waste cooking oil: an insight into a possible valorization pathway for the solid by-product of gasification |
| title_full | Synthesis of char-based acidic catalyst for methanolysis of waste cooking oil: an insight into a possible valorization pathway for the solid by-product of gasification |
| title_fullStr | Synthesis of char-based acidic catalyst for methanolysis of waste cooking oil: an insight into a possible valorization pathway for the solid by-product of gasification |
| title_full_unstemmed | Synthesis of char-based acidic catalyst for methanolysis of waste cooking oil: an insight into a possible valorization pathway for the solid by-product of gasification |
| title_short | Synthesis of char-based acidic catalyst for methanolysis of waste cooking oil: an insight into a possible valorization pathway for the solid by-product of gasification |
| title_sort | synthesis of char-based acidic catalyst for methanolysis of waste cooking oil: an insight into a possible valorization pathway for the solid by-product of gasification |
| url | http://psasir.upm.edu.my/id/eprint/74061/ http://psasir.upm.edu.my/id/eprint/74061/ http://psasir.upm.edu.my/id/eprint/74061/1/Synthesis%20of%20char-based%20acidic%20catalyst%20for%20methanolysis%20of%20waste%20cooking%20oil%20an%20insight%20into%20a%20possible%20valorization%20pathway%20for%20the%20solid%20by-product%20of%20gasification.pdf |