Arsenic (As) and cadmium (Cd) are common soil pollutants whose opposing geochemical behaviors must be taken into account in the development of cost-effective, environmentally friendly remediation strategies. In this study, a pot experiment with lettuce and a field experiment with wheat were performed to examine the impacts of zeolite, biochar, MnO₂, zero-valent iron (ZVI) individually and in binary combinations thereof on As–Cd pollution. The results of the pot experiment showed that biochar, MnO₂ and ZVI had good passivation effects on As and Cd when provided individually, but the effects of a combination of 0.2% ZVI/0.5% biochar or 0.2% MnO₂/0.5% ZVI were even better. These amendments were further investigated in a field experiment, which confirmed the positive effect of 0.2% MnO₂/0.5% ZVI. Therefore, ZVI/biochar and MnO₂/ZVI mixtures may offer effective solutions to the remediation of farmland soil contaminated with both As and Cd.

砷（As）和镉（Cd）是常见的土壤污染物，在制定具有成本效益的，环境友好的补救策略时，必须考虑到相反的地球化学行为。在这项研究中，进行了一个生菜盆栽试验和一个小麦田间试验，以检查沸石，生物炭，MnO ₂，零价铁（ZVI）单独和以其二元组合的形式对As-Cd污染的影响。锅实验结果表明，生物炭，MnO ₂和ZVI单独提供时对As和Cd具有很好的钝化作用，但是结合使用0.2％ZVI / 0.5％生物炭或0.2％MnO ₂/0.5% ZVI更好。在田间实验中进一步研究了这些修正，证实了0.2％MnO ₂ /0.5% ZVI的积极作用。因此，ZVI /生物炭和MnO ₂ / ZVI混合物可能为修复被As和Cd污染的农田土壤提供有效的解决方案。