Liu Minghui, Zhao Yutong, Cheng Quanzhong, Tian Bingyang, Tian Ming, Zhang Jian, Zhang Hui, Xue Tianyan, Qi Tao
School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing, 101408, China; National Engineering Research Center of Green Recycling for Trategic Metal Resources, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China.
School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing, 101408, China; Fuel Cell System and Engineering Laboratory, Key Laboratory of Fuel Cells & Hybrid Power Sources, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China.
J Environ Manage. 2023 Jun 15;336:117599. doi: 10.1016/j.jenvman.2023.117599. Epub 2023 Mar 8.
Residual oil containing platinum group metals (PGMs), which is under-researched, can easily pose resource waste and environmental risks. PGMs feature as scarce strategic metals, and inorganic acids and potassium salts are also considered valuable. An integrated process for the harmless treatment and recovery of useful resources from residual oil is proposed herein. This work developed a zero-waste process based on the study of the main components and characteristics of the PGM-containing residual oil. The process consists of three modules: pre-treatment for phase separation, liquid-phase resource utilisation, and solid-phase resource utilisation. Separating the residual oil into liquid and solid phases allows for the maximum recovery of valuable components. However, concerns about the accurate determination of valued components emerged. Findings revealed that Fe and Ni are highly susceptible to spectral interference in the PGMs test when using the inductively coupled plasma method. After studying 26 PGM emission lines, Ir 212.681 nm, Pd 342.124 nm, Pt 299.797 nm, and Rh 343.489 nm were reliably identified. Finally, formic acid (81.5 g/t), acetic acid (117.2 kg/t), propionic acid (291.9 kg/t), butyric acid (3.6 kg/t), potassium salt (553.3 kg/t), Ir (27.8 g/t), Pd (10960.0 g/t), Pt (193.1 g/t), and Rh (109.8 g/t) were successfully obtained from the PGM-containing residual oil. This study provides a helpful reference for the determination of PGM concentrations and high-value utilisation of PGM-containing residual oil.
含有铂族金属（PGMs）的残油研究较少，容易造成资源浪费和环境风险。铂族金属是稀缺的战略金属，无机酸和钾盐也被认为具有价值。本文提出了一种从残油中无害化处理和回收有用资源的综合工艺。这项工作在研究含铂族金属残油的主要成分和特性的基础上，开发了一种零废物工艺。该工艺由三个模块组成：相分离预处理、液相资源利用和固相资源利用。将残油分离为液相和固相可以最大程度地回收有价值的成分。然而，出现了对准确测定有价值成分的担忧。研究结果表明，使用电感耦合等离子体法时，铁和镍在铂族金属测试中极易受到光谱干扰。在研究了26条铂族金属发射线后，可靠地识别出铱212.681nm、钯342.124nm、铂299.797nm和铑343.489nm。最终，从含铂族金属残油中成功获得了甲酸（81.5g/t）、乙酸（117.2kg/t）、丙酸（291.9kg/t）、丁酸（3.6kg/t）、钾盐（553.3kg/t）、铱（27.8g/t）、钯（10960.0g/t）、铂（193.1g/t）和铑（109.8g/t）。本研究为含铂族金属残油中铂族金属浓度的测定和高价值利用提供了有益的参考。
