Geothermal industry waste-derived catalyst for enhanced biohydrogen production. (November 2020)

• Record Type: Journal Article
• Authors: Munfarida, Siti; Widayat, ; Satriadi, Hantoro; Cahyono, Bambang; Hadiyanto, ; Philia, John; Prameswari, Jedy
• Is Part Of: Chemosphere. Volume 258(2020)
• Publication Date: 2020-11
• Subjects: Biohydrogen -- Catalyst -- Ethanol -- Geothermal waste -- Steam reforming process; Pollution -- Periodicals; Pollution -- Physiological effect -- Periodicals; Environmental sciences -- Periodicals; Atmospheric chemistry -- Periodicals; 551.511
• DOI: 10.1016/j.chemosphere.2020.127274
• Languages: English
• ISSNs: 0045-6535

Abstract

Abstract: The main aim of this work was to develop sustainable catalyst from geothermal waste by hydrothermal process for enhanced biohydrogen production. The effects of Si/Al ratio and pH neutralization on the catalyst were also investigated to provide further insight into the hydrogen production capability. Results have shown with increasing Si/Al ratio, a lower amount of catalyst was synthesized and smaller particle size was obtained. pH neutralization treatment resulted in higher conversion compared to non-neutralized ones. Meanwhile, the highest conversion of biohydrogen from ethanol through steam reforming process (95.19%) was obtained from catalyst with pH neutralization treatment and Si/Al ratio of 10. The catalyst developed in this study was concluded to be suitable for framework/supporting catalyst due to relatively low selectivity. Highlights: Catalyst showed promising performance in biohydrogen production. Si/Al ratio and wash treatment was significant to catalyst yield. Si/Al ratio and wash treatment was significant to biohydrogen conversion. Si/Al ratio 10 and wash treatment give highest ethanol-hydrogen conversion, 95.19%. Geothermal waste-derived catalyst was more suitable for framework/support catalyst.