Review
Metallurgy & Metallurgical Engineering
Pratima Meshram, Abhilash
Summary: This review discusses the availability and recovery methods of germanium in primary and secondary resources. It highlights the high demand for germanium in fiber optics and the scarcity of resources, resulting in the global consumption exceeding primary production. Various resources such as zinc plant residues, coal and coal plant waste, spent optical fibers, and copper flue dust have been examined for germanium recovery. Chemical precipitation, solvent extraction, ion exchange, membrane processes, and biological approaches have been explored for the separation of germanium.
MINING METALLURGY & EXPLORATION
(2022)
Review
Engineering, Environmental
Ebrahim Allahkarami, Bahram Rezai
Summary: This review article provides recent progress regarding the separation and purification of cerium by different methods, with solvent extraction (SX) being a popular technique for high purity cerium commercial production.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Review
Engineering, Chemical
Leiting Shen, Fiseha Tesfaye, Xiaobin Li, Daniel Lindberg, Pekka Taskinen
Summary: Rhenium is a rare and important metal widely used in high-temperature superalloys and platinum-rhenium catalysts. The primary production of rhenium is as a by-product in the production of other metals, and the recycling process is similar to extracting rhenium from primary resources. The main challenges lie in enriching rhenium in production and recovering spent rhenium scrap with high recovery rates.
MINERALS ENGINEERING
(2021)
Article
Metallurgy & Metallurgical Engineering
Shuang Sun, Dan Zou, Ji Chen, Yuefeng Deng
Summary: This study investigates the removal of radioactive Th(IV) from high-purity Sc2O3 using DEHEHP and the extraction behavior of Sc(III) from HNO3 solution using DEHEHP. The results show that DEHEHP exhibits excellent separation ability for Sc(III) and Th(IV) from HNO3 solution.
Article
Materials Science, Multidisciplinary
Erik Prasetyo, Corby Anderson, Arya Fitra Jaya, Widya Aryani Muryanta, Anton Sapto Handoko, Muhammad Amin, Muhammad Al Muttaqii, Fathan Bahfie
Summary: Solvent extraction and precipitation methods were used to separate and purify copper, cobalt, manganese, and nickel from the leachate of spent lithium-ion batteries. The metal separation was achieved by adjusting the pH and using different extractants.
Review
Biochemistry & Molecular Biology
Wenqi Wang, Zhicheng Liu, Yongjian Liu, Zhijun Su, Yonggang Liu
Summary: This article summarizes the extraction methods, purification methods, biological activities, and prospects of plant polypeptides, providing a basis for further research on plant polypeptides.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Review
Green & Sustainable Science & Technology
Jiang Tao, Zhang Tao, Liu Zhihong
Summary: Germanium recovery from aqueous solutions is an urgent global requirement, with solvent extraction being an effective method. By studying aspects such as the characteristics of the solutions, properties of the extractants, germanium species, and extraction systems, valuable insights can be gained for the development of a more efficient solvent-extraction process for germanium recovery.
JOURNAL OF CLEANER PRODUCTION
(2021)
Review
Environmental Sciences
Erkang Feng, Dongjing Gao, Yutong Wang, Fengshan Yu, Chunxia Wang, Jiawei Wen, Yangqin Gao, Guoyong Huang, Shengming Xu
Summary: The exploitation and utilization of secondary resources have social benefits such as resource conservation, pollution reduction, and cost reduction in production. However, less than 20% of titanium secondary resources are currently recyclable, and there is limited research on titanium secondary resource recovery. This article provides an overview of the global distribution of titanium resources, market supply and demand, and technical studies on titanium extraction from different titanium-bearing secondary slags. It compares various methods of secondary resource recovery, points out the future development direction of titanium recycling, and emphasizes the need for attention to lithium titanate waste recycling.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Engineering, Chemical
He Li, Tariro Mabhiza, Yadong Ning, Zhihui Yu, Caixia Lv, Xiaobo Shen, Guangye Wei, Jingkui Qu
Summary: This research explored the purification and recovery of beryllium from a multi-component solution using a solvent extraction method. It was found that under optimal conditions, 98.66% of the beryllium could be extracted using naphthenic acid as the extractant. The study also developed a process flowsheet for the separation of beryllium from multiple impurities using naphthenic acid, which showed high efficiency and a favorable beryllium-aluminium separation effect.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Alex Christopher Barksdale, Junghyo Yoon, Hyukjin J. Kwon, Jongyoon Han
Summary: The surge in electric vehicle deployment in response to the global climate crisis has led to a significant increase in demand for lithium-ion batteries. Lithium brine has become a critical lithium resource due to cheaper processing and greater availability, but reducing the Mg2+: Li+ ratio of brines remains a challenge.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Review
Plant Sciences
Zhiying Bian, Rui Zhang, Xin Zhang, Jingyi Zhang, Lingchuan Xu, Lihao Zhu, Yan Ma, Yuhong Liu
Summary: Rehmannia glutinosa (RG) is a widely used herb with polysaccharides that have various biological activities. This review provides updated information on the extraction, separation methods, structural characteristics, and pharmacological activities of RG polysaccharides. Further research is needed to explore its molecular structure, toxicity, and clinical pharmacological effects for safe clinical application and wider use.
JOURNAL OF ETHNOPHARMACOLOGY
(2023)
Review
Chemistry, Medicinal
Hongli Zheng, Yanan Zhao, Lei Guo
Summary: Phlorotannins are natural active substances extracted from brown algae, which have a wide range of biological activities and are mainly used in medicine, food, and cosmetics. This paper reviews the research progress of phlorotannins, which will contribute to the investigation of their important biological significance.
Article
Chemistry, Analytical
Elahe Naghdi, Reyhane Ahmadloo, Mehrdad Shadi, Griffin E. Moran
Summary: Due to its importance in various industries, the need for pure enantiomers has increased. This review provides an overview of enantioselective extraction methods, focusing on solid-liquid extraction and liquid-liquid extraction. It discusses their benefits and limitations and also introduces novel methods. This study is comprehensive, providing insights into the categories and applications of chiral extraction techniques.
TRENDS IN ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2023)
Article
Engineering, Environmental
Yakun Zhang, Yun Lei, Wenhui Ma, Zhe Shi, Qiushi Chen, Zhanchao Li, Chao Wang
Summary: Ti5Si3 and Ti5Si4-TiAl3 alloys were successfully prepared by utilizing SSC, TBFS, and AAS wastes, achieving the full utilization of titanium and aluminum resources. By studying the aluminum reduction efficiency under different conditions and using electromagnetic directional crystallization to remove impurities, the efficiency and quality of the alloys' preparation were improved, with no emissions during the production process.
CHEMICAL ENGINEERING JOURNAL
(2022)
Review
Food Science & Technology
Ying Li, Meng Li, Baojun Xu, Zhibo Li, Yanxia Qi, Zhiyuan Song, Qiancheng Zhao, Bin Du, Yuedong Yang
Summary: This review summarizes the methods of extraction and processing of various SPs from different sea cucumber species and highlights the deficiencies and limitations of current methods. Suggestions are made for combining traditional processing techniques with SP extraction, emphasizing the importance of standardized processing methods and the necessity of official approval for commercial applications of SPs. Finally, an optimistic outlook for the promising future of SPs is forecasted.
JOURNAL OF FUNCTIONAL FOODS
(2021)
Article
Chemistry, Multidisciplinary
Abhilash, Harshita Agarwal, Pratima Meshram, Rohit B. Meshram, Soni Jha, J. N. Patel, Manish Soni, Kiran Rokkam, Sheeba Mashruwala
Summary: This study developed a green method for recovering vanadium from spent contact process catalyst, achieving high recovery rates for vanadium, iron, and aluminum. The leaching kinetics and mechanism were further characterized using XRD and SEM, and vanadium separation was successfully carried out using ion exchange and precipitation methods.
SEPARATION SCIENCE AND TECHNOLOGY
(2021)
Review
Biotechnology & Applied Microbiology
Ata Akcil, Yahaya Alhaji Ibrahim, Pratima Meshram, Sandeep Panda, Abhilashb
Summary: The global demand for rare earth elements (REEs) is constantly rising, and using urban waste such as consumer electronic scrap (CE-Scrap) for recycling has the potential to meet this demand. However, commercial extraction and recovery of REEs from recycled CE-Scrap is still below 1%, highlighting the need for further research and development in this area. This article discusses the potential CE-Scrap resources for REEs recycling, as well as the feasibility and challenges associated with this process.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(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)
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
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.
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.
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
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.
