Enhancing attapulgite and cement-modified loess for effective landfill lining: A study on seepage prevention and Cu/Pb ion adsorption

Zhengrui Zhang and Siti Jahara Matlan and Lili Zhang and Ahad Amini Pishro and Mojdeh Amini Pishro and Xian Gao and Nazaruddin Abdul Taha and Yuxin Zhou (2024) Enhancing attapulgite and cement-modified loess for effective landfill lining: A study on seepage prevention and Cu/Pb ion adsorption. Open Geosciences. pp. 1-15.

	Text ABSTRACT.pdf Download (42kB)
	Text FULL TEXT.pdf Restricted to Registered users only Download (5MB) \| Request a copy

URL: https://ui.adsabs.harvard.edu/abs/2024OGeo...16206...

Abstract

This study aims to use attapulgite (ATT) and cement to modify loess as the lining material of landfills in loess areas and to exert the adsorption property of modified loess to ensure seepage prevention. It provides a safe, efficient, low-cost anti-seepage material for constructing a landfill in a loess area. For ATT-modified loess, when the content of ATT is less than 10%, the decrease rate of permeability coefficient is obvious, and when the content is more than 10%, the decrease rate becomes slow. After adding 5% cement on this basis, the permeability coefficient of ATT cement-modified loess is 8 × 10−8 cm/s, which meets the standard requirements (≤10−7 cm/s). The results show that the adsorption of Cu and Pb ions on ATT cement-modified loess is higher than that on pure loess. Cu and Pb ions’ adsorption rates are 99.2 and 98.5% in a single solution. In the mixed solution, the adsorption rates of copper and lead ions were 97.5 and 98.2%, respectively. Therefore, the study obtained the ratio of modified loess (85% loess + 10% ATT + 5% cement) that can not only meet the seepage prevention requirements of the landfill but also can adsorb heavy

Item Type:	Article
Keyword:	Modified loess, anti-seepage, permeation, absorption, landfill
Subjects:	Q Science > QC Physics > QC1-999 Physics > QC120-168.85 Descriptive and experimental mechanics T Technology > TD Environmental technology. Sanitary engineering > TD1-1066 Environmental technology. Sanitary engineering > TD783-812.5 Municipal refuse. Solid wastes
Department:	FACULTY > Faculty of Engineering
Depositing User:	ABDULLAH BIN SABUDIN -
Date Deposited:	09 Sep 2024 11:32
Last Modified:	09 Sep 2024 11:32
URI:	https://eprints.ums.edu.my/id/eprint/41019

Actions (login required)

View Item