Santosh, M.S. and Khan, Afaq Ahmad and Tripathy, Amrita (2025) Zero-waste hydrogen production using Ga-In activated aluminium composites for pressurized sea water desalination. Chemical engineering Science, 306. ISSN 0009-2509

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Abstract

Al:Ga:In composites with varying weight % were developed, effectively removing the oxide layer that hinders the Al reaction with water. Among these developed composites, the 6:1:1 (0.75 gm Al) ratio demonstrated the highest hydrogen production of 338 ml in 1000 s. Ex-situ XRD studies confirmed the existence of aluminium hydroxide (Al (OH)3) with Ga and In. Ga and In, which do not participate in the reaction, are efficiently recovered via Bayer’s method with 98 % yield. Importantly, 1 g of the 6:1:1 composite can desalinate one litre of seawater within 30 min with the TDS, conductivity, and pH of 750–900 mg/L, 1.0–1.25 mS/cm, and ̴ 7, respectively. This innovative approach minimizes wastage, as Ga and In are reclaimed post-reaction. Further- more, surplus hydrogen can be turned into electricity using a suitable fuel cell, offering a sustainable means to generate clean energy while simultaneously treating seawater

Item Type:	Article
Uncontrolled Keywords:	Seawater desalination Hydrogen generation Aluminium scrapsGallium Indium
Subjects:	Coal Characterisation
Divisions:	UNSPECIFIED
Depositing User:	Mr. B. R. Panduranga
Date Deposited:	30 Apr 2025 06:52
Last Modified:	02 May 2025 05:50
URI:	http://cimfr.csircentral.net/id/eprint/2789

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