Application of a cashew-based oxime in extracting Ni, Mn and Co from aqueous solution,Chemical and Biological Technologies in Agriculture

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Application of a cashew-based oxime in extracting Ni, Mn and Co from aqueous solution
Chemical and Biological Technologies in Agriculture ( IF 5.2 ) Pub Date : 2021-07-22 , DOI: 10.1186/s40538-021-00236-5
Chi M. Phan ₁ , Anita E. Hyde ₁ , Son A. Hoang _{2,

3} , Son H. Vu ₂ , Hoang M. Nguyen ₄ , Cuong V. Nguyen ₅ , Shin-ichi Yusa ₆

Affiliation

Cashew nut shell is a by-product of cashew (Anacardium occidentale) production, which is abundant in many developing countries. Cashew nut shell liquor (CNSL) contains a functional chemical, cardanol, which can be converted into a hydroxyoxime. The hydroxyoximes are expensive reagents for metal extraction. CNSL-based oxime was synthesized and used to extract Ni, Co, and Mn from aqueous solutions. The extraction potential was compared against a commercial extractant (LIX 860N). All metals were successfully extracted with pH0.5 between 4 and 6. The loaded organic phase was subsequently stripped with an acidic solution. The extraction efficiency and pH0.5 of the CNSL-based extractant were similar to a commercial phenol-oxime extractant. The metals were stripped from the loaded organic phase with a recovery rate of 95% at a pH of 1. Cashew-based cardanol can be used to economically produce an oxime in a simple process. The naturally-based oxime has the economic potential to sustainably recover valuable metals from spent lithium-ion batteries.

更新日期：2021-07-22

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