Article
Engineering, Chemical
Dongxing Wang, Wei Li, Shuai Rao, Jinzhang Tao, Lijuan Duan, Kuifang Zhang, Hongyang Cao, Zhiqiang Liu
Summary: By calcining the spent electrode material in a nitrogen atmosphere, the proposed energy-saving pre-treatment process allows for easy leaching of metals from spent LIBs in H2SO4 solution without the need for reductants. This method destroys the layered crystal structure of the cathode material, enhancing metals leaching rates through refinement of crystalline size, increased defects, and amorphization. This study offers a cost-effective approach to improve metals leaching efficiency from spent LIBs.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Metallurgy & Metallurgical Engineering
Wei-lun LI, Yong -ming Chen, Shuai LI, Chang -hong Wang, Yun LI, Tian-yu Zhao, Michael Traversy, Cong Chang, Ya-fei Jie, Jing He, Chao-bo Tang, Sheng-hai Yang
Summary: Starch was used as a reductant to recover Ni, Co, and Mn from de-lithium residue in ternary lithium-ion batteries. The leaching kinetics and mechanism were studied, and the effects of various parameters on leaching efficiencies were investigated. Under optimized conditions, high leaching efficiencies were achieved for all three metals. Starch is a promising alternative to conventional reductants for the recovery of valuable metals from spent ternary LIBs.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2023)
Article
Engineering, Environmental
Dezhi Hu, Baozhong Ma, Yubo Liu, Qinqing Zhao, Yingwei Lv, Chengyan Wang, Yongqiang Chen
Summary: A process combining sulfuric acid baking and water leaching was proposed for the efficient treatment and extraction of lithium, aluminum, and phosphorus from montebrasite. The leaching rates of Li, Al, and P reached more than 96%. This process is characterized by low energy consumption, high comprehensive recovery rates of valuable elements, and environmental friendliness.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Environmental Sciences
Sibananda Sahu, Niharbala Devi
Summary: This study proposes a sustainable hydrometallurgical route for recovering lithium and cobalt from spent LIBs using DL-lactic acid as a lixiviant. With the optimization of leaching parameters, the maximum leaching efficiencies of lithium and cobalt reach 99.8% and 99%, respectively.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Green & Sustainable Science & Technology
Xiaojian Liao, Maoyou Ye, Jialin Liang, Shoupeng Li, Zihang Liu, Yanghong Deng, Zhijie Guan, Qiaowei Gan, Xiaodi Fang, Shuiyu Sun
Summary: The addition of ascorbic acid in the mixed culture bioleaching process can enhance the leaching efficiency of metals from spent Li-ion batteries, making it a promising alternative for effective metal extraction.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Physical
Xiaoping Fan, Chunhong Song, Xifei Lu, Ying Shi, Shenglong Yang, Fenghua Zheng, Youguo Huang, Kui Liu, Hongqiang Wang, Qingyu Li
Summary: A new method for recovering aluminum foils and cathode materials from spent lithium ion batteries using concentrated sulfuric acid solution has been developed to achieve efficient separation and leaching, resulting in high purity materials for further reuse.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Sibananda Sahu, Subhankar Pati, Niharbala Devi
Summary: This paper proposes a viable hydrometallurgical method using acetic acid as a leachant to recover critical metals from waste LCO-type batteries. By adjusting various leaching parameters, the leaching conditions were optimized. It was found that the maximum leaching efficiencies of Li (99.6%) and Co (95.6%) were achieved under the conditions of 1.2 mol/L acetic acid, 7% H2O2, 90 degrees C, an S/L ratio of 10 g/L, and a 60 min leaching period. The kinetic models were studied to determine the reaction's pace and the leaching mechanism. The economic viability of the current leaching procedure in comparison to earlier approaches is also discussed.
Article
Engineering, Chemical
Jenni Lie, Jhy-Chern Liu
Summary: The novel closed-vessel microwave system utilizing ascorbic acid showed efficient leaching of valuable metals from spent LIBs, with leaching efficiency depending on acid concentration, heating rate, and temperature. Optimal conditions for complete leaching were determined as 0.5 M ascorbic acid, 40 degrees C/min heating rate, 10 g/L solid to liquid ratio, and 125 degrees C within 10 min. Although using 0.1 M ascorbic acid could facilitate the reduction of Co (III) to Co (II), additional oxalic acid was required for higher recovery of Co and Mn in the leaching solution.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Green & Sustainable Science & Technology
Chunyuan Yang, Jiawei Wang, Pan Yang, Yue He, Song Wang, Pingyuan Zhao, Haifeng Wang
Summary: This study successfully recovered valuable metals from spent lithium-ion batteries using sulfuric acid and oxalic acid as compound leaching agents, providing an important reference for new methods of recycling spent batteries.
Article
Energy & Fuels
Yu Xie, Chenquan Ni, Zhengwei Han, Jialong Liao, Weiqi Xie, Hui Zhong, Zhiguo He
Summary: This study investigated the low-temperature sulfuric acid baking followed by water leaching method for extracting lithium from Li ore. The Li leaching rate reached 84.42% under the optimal conditions. The results showed that the sulfuric acid baking process converted Al-Li-containing minerals into soluble minerals, which were then extracted into the solution through water leaching.
INTERNATIONAL JOURNAL OF COAL PREPARATION AND UTILIZATION
(2023)
Article
Materials Science, Multidisciplinary
Pratima Meshram, Sami Virolainen, Abhilash, Tuomo Sainio
Summary: In this study, hydrometallurgical recycling of metals from high-cobalt-content spent lithium-ion batteries from laptops was explored. The purification processes of precipitation and solvent extraction were used. The results showed that the electrode material of the batteries contained significant amounts of cobalt, nickel, manganese, and lithium. By using precipitation and solvent extraction techniques, 99.9% pure cobalt sulfate was successfully synthesized from the leach liquor of the spent batteries.
Article
Chemistry, Physical
Shunsuke Kuzuhara, Mina Ota, Ryo Kasuya
Summary: The study aims to recover PGMs from waste materials using Li salts, where Pt leaching is achieved with Li2CO3, and Rh and Pd leaching with HCl. The leaching rates of PGMs do not significantly change even when using LiF as the Li salt model. Furthermore, fluorine can be immobilized as MgF2 in the presence of cordierite during calcination.
Article
Environmental Sciences
Neng Wei, Yaqun He, Guangwen Zhang, Yi Feng, Jinlong Li, Qichang Lu, Yuanpeng Fu
Summary: This paper proposes an effective process for recovering Lithium, Nickle, Cobalt and Manganese from spent lithium-ion batteries (LIBs) using self-supplied reductant roasting and acid leaching. The waste membrane from spent LIBs is used as the reductant in the roasting process. The effects of roasting temperature, roasting time and membrane dosage on the crystal structure and phase transformation of the roasting products are investigated and optimized.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Engineering, Environmental
Yayun Ma, Xiangyang Zhou, Jingjing Tang, Xiaojian Liu, Hongxiang Gan, Juan Yang
Summary: In this study, antibiotic bacteria residues (ABRs) are proposed as a novel green reducing agent for efficient recovery of valuable metals in spent cathode powder (SCP) and reducing environmental pollution. The leaching mechanism of ABRs provides a sustainable green recycling strategy for treating waste lithium-ion batteries (LIBs) by synergistically reducing valuable metals.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Chemical
Qinghua Tian, Bo Dong, Xueyi Guo, Zhipeng Xu, Qingao Wang, Dong Li, Dawei Yu
Summary: The study investigated the atmospheric acid leaching behavior of scandium in two different types of laterite nickel ore from Indonesia. It was found that scandium in limonitic laterite is more susceptible to acid attack and easier to be extracted than other metals, while the scandium and nickel in saprolitic laterite have similar dissolution characteristics. The dissolution kinetics fit well to the shrinking core model. The research results may assist in the development of a more efficient process for extracting scandium from laterite nickel ores.
MINERALS ENGINEERING
(2021)
Article
Metallurgy & Metallurgical Engineering
Abhilash, Y. Usha, K. Seetharaman, Pratima Meshram, K. D. Mehta, B. D. Pandey
Summary: The study successfully utilized a Bacillus circulans-assisted biochemical leaching process to extract metals from sea nodules, finding that coarser lumps also yielded satisfactory results. Computational Fluid Dynamics and a multiphase mixture model were used to analyze mass transfer and hydrodynamics, leading to the successful extraction of copper and other metals.
MINERAL PROCESSING AND EXTRACTIVE METALLURGY REVIEW
(2022)
Article
Geosciences, Multidisciplinary
Deus Albert Msumange, Ersin Yener Yazici, Oktay Celep, Haci Devec
Summary: This study examined the effectiveness of three different adsorbents, activated carbon, strong base, and weak base resins, for adsorbing gold from real cyanide leach liquor. Activated carbon had the highest gold loading, while Purogold A194 adsorbed the most copper. Although activated carbon had a high gold loading, it was less selective than Purogold S992. Purogold A194 exhibited the lowest selectivity compared to Purogold S992 and activated carbon.
BULLETIN OF THE MINERAL RESEARCH AND EXPLORATION
(2022)
Article
Engineering, Chemical
F. Ahlatci, E. Y. Yazici, E. Yilmaz, O. Celep, H. Deveci
Summary: This study presents a novel method for the recovery of silver from ammoniacal thiosulphate solutions by precipitation using trimercapto-s-triazine (TMT). The results showed that silver can be rapidly and effectively precipitated using TMT as a non-toxic reagent. This study demonstrates the potential of TMT as an efficient and environmentally friendly option for silver recovery.
MINERALS ENGINEERING
(2022)
Review
Chemistry, Multidisciplinary
Abhilash, Vaidyanathan Swetha, Pratima Meshram
Summary: Graphene has revolutionized the field of nanotechnology with its tremendous properties, and the chemical synthesis route offers scalable and high-volume production. Utilizing alternative low-cost carbon resources reduces dependency on traditional resources, lowers costs, and provides a solution for waste biomass management.
Article
Green & Sustainable Science & Technology
P. M. Abhilash, D. Chakradhar
Summary: This study presents a novel multi-criteria decision-making method for optimizing the process parameters during wire electric discharge machining of Inconel 718. By using a hybrid GRA-TOPSIS algorithm with entropy weights, the cutting speed is maximized while simultaneously minimizing surface roughness and flatness error to find the optimum parameter combination. The results show that the entropy weighted GRA-TOPSIS method improves overall process performance compared to conventional TOPSIS.
PROCESS INTEGRATION AND OPTIMIZATION FOR SUSTAINABILITY
(2022)
Article
Engineering, Chemical
Aleksei Kritskii, Oktay Celep, Ersin Yazici, Haci Deveci, Stanislav Naboichenko
Summary: The nature of hydrothermal reaction between sphalerite and pyrite particles and copper sulfate solution was investigated. The effects of temperature, CuSO4 and H2SO4 concentrations, reaction time, stirring speed and particle size on the conversion of sphalerite and pyrite were studied. The study proposed the reaction mechanisms in two stages and explained some inconsistencies reported in previous studies.
MINERALS ENGINEERING
(2022)
Article
Chemistry, Physical
Abdullah Obut, Zeynep Aktosun, Ismail Girgin, Haci Deveci, Abdulkerim Yorukoglu
Summary: This study focuses on the characterization of clayey waste from the Kirka boron plant and the development of a sulfuric acid roasting-water leaching process for lithium extraction. The results show that the process can achieve a high lithium extraction rate at the optimal roasting temperature and acid/waste ratio. The process offers the advantages of low temperature, high extraction rate, and no need for external sulfation agents.
PHYSICOCHEMICAL PROBLEMS OF MINERAL PROCESSING
(2022)
Article
Geochemistry & Geophysics
Abhilash, Sabrina Hedrich, Pratima Meshram, Axel Schippers, Ajay Gupta, Subhadra Sen
Summary: Bioleaching using Gluconobacter oxydans bacterium was investigated for the extraction of rare earth elements from granulated blast furnace slag. The results showed that a mixture of non-adapted and GGBFS-adapted culture achieved a maximum solubilization of 67% and 88% for Nd after 12 and 40 days of incubation, respectively. The increase in gluconic acid secretion by the bacteria contributed to the rise in metal extraction.
Review
Metallurgy & Metallurgical Engineering
Sonali Rout, Abhilash, Pratima Meshram, Patrick Zhang
Summary: In general, phosphatic rocks contain around 0.05 wt% rare earth elements (REEs) and have a global commercial output of 250 million tons per year. This review discusses the geological characteristics of phosphatic rocks, their availability, and the conversion methods to phosphoric acid and phosphogypsum.
MINERAL PROCESSING AND EXTRACTIVE METALLURGY REVIEW
(2023)
Article
Metallurgy & Metallurgical Engineering
Abhilash, Pratima Meshram, Ajay Gupta, Subhadra Sen
Summary: Steel production generates a large amount of waste that needs to be processed or sold due to environmental regulations. This study characterizes the slag wastes generated from TATA STEEL, India, and finds that they contain strategic and rare earth elements. These slag wastes can serve as a viable secondary resource for utilization, ensuring a zero-waste process.
TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS
(2023)
Article
Engineering, Chemical
Deus Albert Msumange, Ersin Yener Yazici, Oktay Celep, Haci Deveci, Aleksei Kritskii, Kirill Karimov
Summary: The recovery of gold and silver from a roasted copper-rich pyritic refractory gold ore was investigated. Cyanide leaching at high cyanide concentration (5 g/L NaCN) produced high gold and silver extractions due to increased availability of cyanide for gold leaching. Adsorption tests showed that activated carbon and weak base resin had good selectivity for gold over copper, with Purogold S992 being the most selective adsorbent with the highest gold and lowest copper loadings. The small-size and linear gold-cyanide complexes in Purogold S992 contributed to its superior selectivity for gold at high cyanide concentration.
MINERALS ENGINEERING
(2023)
Article
Geochemistry & Geophysics
Mudila Dhanunjaya Rao, Pratima Meshram, Abhilash, Kamalesh K. Singh
Summary: Through laboratory research, it has been found that the amount of gold in waste printed circuit boards from obsolete mobile phones is much higher than that in natural ores, making it possible to recover gold through a series of chemical processes. By optimizing the parameters and separation processes, high-purity gold powder has been successfully obtained from the solution. This study confirms the feasibility of gold recovery from waste printed circuit boards of mobile phones.
Article
Engineering, Chemical
Banu Yaylali, Haci Deveci, Ersin Yener Yazici, Oktay Celep
Summary: This study investigated the extraction of cobalt and base metals from a cobaltiferrous pyrite concentrate in H2SO4 media in the presence of NaNO3. The concentration of NaNO3 and temperature were found to be the most significant factors affecting cobalt extraction. High levels of NaNO3 and ultra-fine grinding of the concentrate improved cobalt extraction, while increased solids ratio had a negative effect. These findings suggest that the H2SO4-NaNO3 leaching system is a promising alternative for extracting cobalt from cobaltiferrous pyrite concentrates/tailings.
MINERALS ENGINEERING
(2023)
