Attrition resistance, a sporadically studied factor in aqueous adsorption: Status quo and research outlook towards creating better adsorbents--颗粒学报PARTICUOLOGY

Mudhoo, A., Chu, K. H., & Mondal, P. (2023). Attrition resistance, a sporadically studied factor in aqueous adsorption: Status quo and research outlook towards creating better adsorbents. Particuology, 77, 71-78. https://doi.org/10.1016/j.partic.2022.08.013

Attrition resistance, a sporadically studied factor in aqueous adsorption: Status quo and research outlook towards creating better adsorbents

Ackmez Mudhoo ^a *, Khim Hoong Chu ^b, Prasenjit Mondal ^c

a Department of Chemical and Environmental Engineering, Faculty of Engineering, University of Mauritius, Réduit, 80837, Mauritius
b Honeychem Research, Newtown, Wellington, 6021, New Zealand
c Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India

10.1016/j.partic.2022.08.013

Volume 77, June 2023, Pages 71-78

Received 21 May 2022, Revised 25 August 2022, Accepted 26 August 2022, Available online 9 September 2022, Version of Record 2 December 2022.

E-mail: a.mudhoo@uom.ac.mu

Highlights

• Attrition resistance in aqueous-media adsorbents has been sporadically studied.

• The degree of attrition in an adsorbent depends on its synthesis and structure.

• Loss on attrition in adsorbents is mostly quantified by gravimetry-based methods.

• Analysis of attrition should be extended to large scale aqueous adsorption systems.

Abstract

Attrition resistance in an adsorbent is one measure of its mechanical strength. It quantifies its ability to resist the impact of frictional forces generated in a milieu where hydrodynamic agitation exists. However, attrition resistance has been only sporadically examined in adsorbents used to remove aqueous adsorbates. Since attrition is relevant in aqueous adsorption process design, this review discusses the quantification of attrition resistance, variability in loss due to attrition across adsorbents, and the implications of attrition on adsorption systems. Finally, some key research opportunities that could be explored for a better understanding of attrition in real-scale water purification are presented. It is inferred that substantial research and development still needs to be accomplished to better understand the attrition resistance-adsorbent behavior within real-scale aqueous adsorption environments. The results can be harnessed to design and produce more robust, efficient and cost-effective adsorbents.

Graphical abstract

Keywords

Attrition resistance; Adsorbent; Morphology change; Aqueous adsorbate

文章导读