Graphical Abstract

Abstract

Recycling of materials has been one of the extensively followed pathways for solid waste management and achieving sustainability, which has become one of the crucial areas of research emphasizing environmental protection and water remediation issue. Owing to high ion exchangeability, previous works on porous glass structures for developing low-cost adsorbents have been widely carried out.^2-3 This work involves the activation process of Soda Lime Glass, with excellent adsorption capacities as filter media, prepared using a simple three-step reaction. Characterization of the novel adsorbent has been done using Fourier-transform infrared spectroscopy. Batch experiments were performed to quantify the adsorption kinetics and adsorption capacities of the activated Glass, performance of the synthesized composite was evaluated for the adsorption of As (V), Fe (II), Cd (II), Pb (II). The Activated Glass exhibited high dye removal capacity of 185.2 mg/g. The sorption data perfectly fitted the Langmuir adsorption isotherms models for all the studied metal ions. The selectivity sequence according to the maximum adsorption capacities can be given Fe(II)>Pb(II)>Cd(II)>As(II). The good performance of the activated glass can be attributed to the ordering of the silicate structure, the Na⁺ and Ca²⁺ in the modifier network, and the Fe-O doping in the modifier network, which shows excellent ion exchangeability properties. These appropriate features will contribute to the reuse of this novel waste glass as sorbent material in practical application for the removal of heavy metals from industrial wastewater. Results have illustrated the high potential of the newly synthesized Activated Glass for groundwater and wastewater treatment purposes.

Keywords

Adsorbent, heavy metal removal, glass composite, wastewater treatment, waste glass.

Acknowledgement

The authors acknowledge Department of Science and Technology, Govt. of India sponsored project entitled “Center for Technological Excellence in Water Purification (CTEWP)” under Water Treatment Initiative (WTI) (vide sanction letter no DST/TM/WTI/WIC/2K17/84(c) dated 21.02.2019), for providing necessary support.

References

1. C. Shen, Y. Wang, J. Xu, Y. Lu, and G. Luo; Particuology, 2012, 10, 317.
2. Y. W. Sun, Y. J. Wang, L. Yang, Y. C. Lu, G. S. Luo; Solvent Extraction and Ion Exchange, 2008, 26, 672.

Biography

Ranjana Das, Associate Professor, Chemical Engineering Department, Jadavpur University, Kolkata

Affiliations

• Life member of Indian Institute of Chemical Engineering (LM: 36766).
• Life member of Oil Technologists’ Association of India (OTAI/EZ/LM99).
• Active member of American Oil Chemists’ Society (AOCS) (Membership number 546618).
• Life member of Indian Science Congress Association (L-37273)

Educational Qualifications

• Graduation in Chemistry (Hons) from Calcutta University
• B. Tech awarded in Chemical Technology from Calcutta University (Topper, 2003)
• M.Tech awarded in Chemical Technology from Calcutta University (Topper, gold medalist, 2005)
• Ph.D (Tech) awarded 2009, CU

Teaching Experiences

• Associate Professor of Chemical Engineering Department till 2021
• Undergraduate level from year 2006 in Chemical Technology Department, CU
• Post graduate level from 2010 in Chemical Technology Department, CU
• Post graduate level in JU from 2017

A summary of research achievements:

Books (1); [R. Das Mondal, Process Development for Better Utilisation of Seed Meal Constituents, Scholar’s Press, ISBN: 978-3-639-70589-8, Germany, 2013. Book Chapters 29; Refereed Journal Papers 28; Publications in Conference Proceedings 62 (International-34; National 28).

Awards: Best Researcher Award, in the International Scientist Awards on Engineering Science and Medicine, Organized by VDGOOD® Professional Association, 29-30^th April 2022, Pondicherry India.