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| Jin, Han; Kolar, Praveen; Peretti, Steven; Osborne, Jason; Cheng, Jay J. |
| There is significant interest in developing renewable solid base catalysts from agricultural wastes for use in the transesterification of fats into fatty acid methyl esters (FAME). In this study, an inexpensive base catalyst was synthesized by impregnating waste oyster shell with 50% sodium hydroxide solution, followed by calcination at 1000 ℃ for 3h. The resulting solid catalyst was used to catalyze transesterification of soybean oil. Transesterification using the catalyst was studied by systematically varying molar ratio (MR) (methanol to oil) and catalyst loading (CL). Results indicated that the highest FAME yield was 93.9% using MR of 12 and CL of 10%. Reusability tests suggested that the catalyst could be used for at least three runs without any... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2021 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5735 |
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| Kolar, Praveen. |
| An activated carbon-supported sulfonic acid catalyst was synthesized and employed as a hydrolysis agent for hydrolysis of model and real biomasses including cellulose, starch, cellobiose, and switchgrass. Model biomasses including cellulose, starch, and cellobiose were hydrolyzed at 90 0C for 6 and 24 h while switchgrass was hydrolyzed at 75 and 90 0C for 6, 12, 18 and 24 h. For model biomasses, highest glucose was produced from cellobiose corresponding to 237. 1 ± 0.86 mg g-1 after 24 h, whereas switchgrass yielded a maximum glucose of 72.67 ± 1.03 mg g-1 after 18 h at 90 0C. In addition, effects of physical (ultrasonication) and chemical (NaOH and H2SO4) treatments prior to hydrolysis of switchgrass were also studied. The data suggested that physical... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agricultural Engineering; Biosystems Engineering Activated carbon sulfonic acid catalyst hydrolysis biomass switchgrass USA. |
| Ano: 2016 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3898 |
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