Mandal, Ashis Kumar and Das, Bipab (2026) From Waste to Wealth: A Glassy Perspective. In: 2nd International Conference on Advances in Chemical and Materials Sciences (ACMS-2026), 12-14 April 2026, Jadavpur University Campus, Kolkata. (Submitted)

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Abstract

Sustainable Waste Management (SWM) Arsenic contamination in groundwater poses a significant threat in eastern India, leading to severe arsenic poisoning. Although arsenic removal plants are in place, the contaminated sludge generated during filtration often ends up in landfills, exacerbating the problem. Similarly, tannery solid waste contains toxic chromium, particularly hexavalent chromium (Cr+), a known carcinogen. To address these issues, CSIR-CGCRI is working on incorporating tannery solid waste and arsenic-contaminated sludge into glass matrices to produce functional glasses and decorative items. These glasses exhibit remarkable chemical durability and negligible leaching of hazardous elements. Optimization of composition yield UV transmittance and no significant visible transmission is recorded up to 750 nm using TSW. Similarly, arsenic-containing sludge is successfully incorporated into the glass matrix. Furthermore, the growing demand for glass in modern society has led to an increased need for recycling. However, variations of composition and impurities make it difficult to use in the original application. In this connection, the development of glass foam becomes a unique waste-derived material. The glass foam, with a low bulk density (0.3-0.5 g/cm³) and high porosity (80-94%), exhibits low thermal conductivity (0.1-0.2 W/m K), making it suitable for thermal insulation applications. The non-toxic nature, low water absorption, and tailored thermomechanical properties of glass foam make it an attractive alternative building insulation material. Notably, utilizing <95% waste glass to develop glass foam contributes to a circular economy, waste minimization, and resource optimization, surpassing traditional waste utilization methods that often use only 20-30% waste.

Item Type:	Conference or Workshop Item (Speech)
Uncontrolled Keywords:	Waste Utilization in glass; Tannery solid waste; Arsenic contamination; Glass foam
Subjects:	Glass
Divisions:	Glass
Depositing User:	Ms Upasana Sahu
Date Deposited:	23 Sep 2026 09:04
Last Modified:	23 Sep 2026 09:04
URI:	https://cgcri.csircentral.net/id/eprint/5778

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