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·인용수 16
·2023
Increasing recovery opportunities of metal(loid)s from municipal solid waste via landfill leachate recirculation
Hyowon Lee, Frédéric Coulon, Darren J. Beriro, Stuart Wagland
IF 7.1Waste Management
초록

The recovery of 12 critical raw materials (CRM) from municipal solid wastes (MSW) via leachate recirculation was evaluated using a 4 L semi-pilot scale column percolation. The results showed that the recovery of the metal(loid)s was mainly influenced by order of importance: pH > organic content > type of metal(loid)s > age of the waste > redox potential. Among the CRM, Cd and Ni were the most mobile elements, while As and Cr were the least mobile. A comparison of leachate from the leachate recirculated columns before and after the initiation of recirculation indicates an increase in the concentrations of certain CRM and metalloids. The first recirculation cycle supported achieving 100 % recovery. CRM and metalloids in leachate can be recovered; however, the concentrations of CRM and metalloids are usually below 1 mg/L. In this regard, leachate recirculation may enhance the increasing concentration of CRM in landfill leachate. For example, after first recirculation cycle, Ni concentration increased from 0.05 mg/L to 0.11 mg/L. The results obtained from this study can develop further methodologies for the potential recovery of CRM and help foster further research into overcoming limitations for recovering CRM in landfill leachate.

키워드
LeachateMetalloidMunicipal solid wasteEnvironmental scienceWaste managementEnvironmental chemistryChemistryMetalEngineering
타입
article
IF / 인용수
7.1 / 16
게재 연도
2023

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