Hydrogen Generation from the Hydrolysis of Diamond-Wire Sawing Silicon Waste Powder Vibration-Ground with KCl
Diamond-wire sawing silicon waste (DSSW) derived from the silicon wafer sawing process may lead to resource waste and environmental issues if not properly utilized. This paper propounds a simple technique aimed at enhancing the efficiency of hydrogen production from DSSW. The hydrolysis reaction is...
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MDPI AG
2025-01-01
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| author | Zhicheng Li Tao Zhou Jiangfan Liao Xiufeng Li Wenhui Ma Guoqiang Lv Shimin Zhao |
| author_facet | Zhicheng Li Tao Zhou Jiangfan Liao Xiufeng Li Wenhui Ma Guoqiang Lv Shimin Zhao |
| author_sort | Zhicheng Li |
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| description | Diamond-wire sawing silicon waste (DSSW) derived from the silicon wafer sawing process may lead to resource waste and environmental issues if not properly utilized. This paper propounds a simple technique aimed at enhancing the efficiency of hydrogen production from DSSW. The hydrolysis reaction is found to become faster when DSSW is ground. Among the studied grinding agents, KCl has the best performance. The grinding duration and addition amount remarkably affect the final hydrogen yield and initial hydrogen generation rate (IHGR). Among all studied samples, DSSW-KCl 25 wt% ground for 3 min shows the best performance with a hydrogen yield of 86.1% and an IHGR of 399.37 mL min<sup>−1</sup> (g DSSW)<sup>−1</sup> within 650 s. The initial temperature is also found to have a significant influence on the hydrolysis of the DSSW-KCl mixture, and the reaction can proceed to 85% conversion in 100 s with an IHGR of 1383.6 mL min<sup>−1</sup> (g DSSW)<sup>−1</sup> at 338 K. The apparent activation energy for the hydrolysis reaction of the DSSW-KCl composite powder was found to be 45.62 kJ mol<sup>−1</sup> by means of an Arrhenius plot. The rate-determining step for the rapid reaction of DSSW to produce hydrogen is chemical reaction control, while the slow reaction is controlled by diffusion. |
| format | Article |
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| institution | Kabale University |
| issn | 1420-3049 |
| language | English |
| publishDate | 2025-01-01 |
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| spelling | doaj-art-5f7e6a9e27af4680b6201213f68f69ed2025-01-24T13:43:10ZengMDPI AGMolecules1420-30492025-01-0130222310.3390/molecules30020223Hydrogen Generation from the Hydrolysis of Diamond-Wire Sawing Silicon Waste Powder Vibration-Ground with KClZhicheng Li0Tao Zhou1Jiangfan Liao2Xiufeng Li3Wenhui Ma4Guoqiang Lv5Shimin Zhao6Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, ChinaFaculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, ChinaFaculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, ChinaFaculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, ChinaFaculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, ChinaFaculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, ChinaYunnan Key Laboratory for Pollution Processes and Control of Plateau Lake-Watersheds, Yunnan Institute of Ecological and Environmental Sciences, Kunming 650034, ChinaDiamond-wire sawing silicon waste (DSSW) derived from the silicon wafer sawing process may lead to resource waste and environmental issues if not properly utilized. This paper propounds a simple technique aimed at enhancing the efficiency of hydrogen production from DSSW. The hydrolysis reaction is found to become faster when DSSW is ground. Among the studied grinding agents, KCl has the best performance. The grinding duration and addition amount remarkably affect the final hydrogen yield and initial hydrogen generation rate (IHGR). Among all studied samples, DSSW-KCl 25 wt% ground for 3 min shows the best performance with a hydrogen yield of 86.1% and an IHGR of 399.37 mL min<sup>−1</sup> (g DSSW)<sup>−1</sup> within 650 s. The initial temperature is also found to have a significant influence on the hydrolysis of the DSSW-KCl mixture, and the reaction can proceed to 85% conversion in 100 s with an IHGR of 1383.6 mL min<sup>−1</sup> (g DSSW)<sup>−1</sup> at 338 K. The apparent activation energy for the hydrolysis reaction of the DSSW-KCl composite powder was found to be 45.62 kJ mol<sup>−1</sup> by means of an Arrhenius plot. The rate-determining step for the rapid reaction of DSSW to produce hydrogen is chemical reaction control, while the slow reaction is controlled by diffusion.https://www.mdpi.com/1420-3049/30/2/223photovoltaic silicon wastehydrolysishydrogen productionkinetics |
| spellingShingle | Zhicheng Li Tao Zhou Jiangfan Liao Xiufeng Li Wenhui Ma Guoqiang Lv Shimin Zhao Hydrogen Generation from the Hydrolysis of Diamond-Wire Sawing Silicon Waste Powder Vibration-Ground with KCl Molecules photovoltaic silicon waste hydrolysis hydrogen production kinetics |
| title | Hydrogen Generation from the Hydrolysis of Diamond-Wire Sawing Silicon Waste Powder Vibration-Ground with KCl |
| title_full | Hydrogen Generation from the Hydrolysis of Diamond-Wire Sawing Silicon Waste Powder Vibration-Ground with KCl |
| title_fullStr | Hydrogen Generation from the Hydrolysis of Diamond-Wire Sawing Silicon Waste Powder Vibration-Ground with KCl |
| title_full_unstemmed | Hydrogen Generation from the Hydrolysis of Diamond-Wire Sawing Silicon Waste Powder Vibration-Ground with KCl |
| title_short | Hydrogen Generation from the Hydrolysis of Diamond-Wire Sawing Silicon Waste Powder Vibration-Ground with KCl |
| title_sort | hydrogen generation from the hydrolysis of diamond wire sawing silicon waste powder vibration ground with kcl |
| topic | photovoltaic silicon waste hydrolysis hydrogen production kinetics |
| url | https://www.mdpi.com/1420-3049/30/2/223 |
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