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Characterisation of Microwave-assisted Pretreatment for Spent Coffee Grounds |
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| รหัสดีโอไอ | |
| Title | Characterisation of Microwave-assisted Pretreatment for Spent Coffee Grounds |
| Creator | Wipada Jamsai |
| Contributor | Jirapa Phetsom, Teerachai Kuntothom, Anuwat Wanthong |
| Publisher | Faculty of Technology, Mahasarakham University |
| Publication Year | 2562 |
| Keyword | Pretreatment, Spent coffee grounds, Microwav |
| Abstract | Spent coffee grounds (SCGs) is the natural waste from industry and cafe. It mainly composes of cellulose, hemicellulose, and lignin. The pretreatment process could alter the structure and composition of pretreated materials. This study was to characterise the pretreated SCGs based on microwave irradiation assisted NaCl. The process was carried on the various concentration of NaCl (1, 2 and 3 % w/v) and time of irradiation (1, 2 and 3 min). The power consumption of microwave was 300 W for all treatments. The morphological changes of SCGs residue from pretreatment process was characterised by Scanning Electron Microscopy (SEM), the functional groups of main components by Fourier transform infrared spectroscopy (FTIR), and crystallinity index by X-ray diffraction (XRD) methods. The pretreated SCGs with microwave and NaCl showed clear changes in structural surface with rougher and pores when increasing the NaCl concentration and irradiation time. The hemicellulose and lignin in SCGs residues were reduced after the pretreatment process with observation by the different FTIR spectra profiles between before and after SCGs treatment. After pretreatment with microwave power at 300 W for 3 min, the crystalline index was reduced to 31.20, 24.89, 23.39 and 21.82% with increased the NaCl concentration of 1, 2, and 3 % (w/v), respectively. However, the crystalline region was decreased with an increase in the amorphous region. These results could enhance the hydrolysis step and apply in the cellulose conversion process. |
| Language | EN |
| URL Website | https://techno2.msu.ac.th/icofab2019/abstract-collection-and-proceedings/ |
| Website title | The 6th International Conference on Food Agriculture & Biotechnology(ICoFAB 2019) |
