Article
Agronomy
Alexey Abdrashitov, Alexander Gavrilov, Evgeny Marfin, Vladimir Panchenko, Andrey Kovalev, Vadim Bolshev, Julia Karaeva
Summary: The study proposes a method for biomass pretreatment using a jet-driven Helmholtz oscillator. The device design allows for optimal hydraulic cavitation, leading to acoustic oscillations and resonance. Experimental research on the variation of resonator chamber diameter, length, and outlet diameter determined the optimal design parameters. Improving agricultural waste disposal technology can maximize utilization of waste, reduce traditional fuel and energy consumption, and enhance technological and machine-building capabilities to produce competitive cavitation reactors.
Article
Environmental Sciences
Mohammad Rezaee, Hadi Abdollahi, Roozbeh Saneie, Amirhossein Mohammadzadeh, Ali Rezaei, Mohammad Hossein Karimi Darvanjooghi, Satinder Kaur Brar, Sara Magdouli
Summary: This study evaluated a green route for regenerating base and precious metals from waste printed circuit boards. Copper and other base metals were extracted via oxidative acid leaching, while gold was extracted using thiocyanate as a green reagent. The gold extraction was carried out using activated carbon. The final residue was found to be environmentally safe with negligible risk.
Article
Green & Sustainable Science & Technology
Mohammad Rezaee, Roozbeh Saneie, Amirhossein Mohammadzadeh, Hadi Abdollahi, Mehrdad Kordloo, Ali Rezaee, Ehsan Vahidi
Summary: This study aims to investigate the step-wise glycine leaching of base and precious metals from waste printed circuit boards (WPCBs) as a green alternative to cyanide for gold leaching. The optimal conditions for selective copper extraction were found to be 0.5 M glycine, 1% v/v H2O2, 20 g/l pulp density, and ambient temperature, achieving a recovery rate of 99.96%. Gold leaching in the glycine + permanganate system was studied, and it was found that 96.17% of the gold can be selectively extracted at the conditions of 4 g/l glycine, 2 g/l potassium permanganate, and room temperature. Activated carbon can be used to separate about 100% of the gold from the leach solution.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Biotechnology & Applied Microbiology
Pooja Thakur, Sudhir Kumar
Summary: Shredded dust from dismantling waste electrical and electronic equipments is a rich source of valuable metals, such as copper and silver. Through a hybrid method involving bioleaching and chemical lixiviant, precious metals like silver can be efficiently recovered, especially when copper is pre-recovered to enhance the bioleaching of silver.
Review
Environmental Sciences
Payam Rasoulnia, Robert Barthen, Aino-Maija Lakaniemi
Summary: Rare earth elements (REEs) are important high-tech materials with a high risk of supply disruption. Bioleaching as an alternative technology for the recovery and recycling of REEs from various sources has potential applications in the future.
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
James McNeice, Harshit Mahandra, Ahmad Ghahreman
Summary: Thiosulfate, an alternative lixiviant to cyanide, was produced using Methylophaga sulfidovorans bacteria and used to leach gold from ore. Optimal conditions for the growth of bacteria and generation of thiosulfate were determined. The proposed method showed higher sustainability compared to cyanidation and thiosulfate gold leaching processes.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Construction & Building Technology
Yaohua Chen, Jiesheng Liu, Man Zhang, Bowen Feng, Lei Wang, Jing Wei, Wanwan Fu, Xiaoming Tan
Summary: This study investigates the effect of waste printed circuit board (WPCB) powder on the mechanical strength and durability of cement-based materials. The results show that WPCB powder can enhance the compressive and flexural strength of the materials, as well as improve their freeze-thaw resistance and sulfate corrosion resistance. The study also determines the optimal content of fibrous and granular WPCB powder for optimal mechanical strength and durability. The findings provide further theoretical research on the application of waste circuit boards in cement-based materials and offer a new solution to reduce WPCB pollution to the environment.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Engineering, Environmental
Adam J. Williamson, Florian Verbruggen, Vania S. Chavez Rico, Jef Bergmans, Jeroen Spooren, Lourdes Yurramendi, Gijs Du Laing, Nico Boon, Tom Hennebel
Summary: The study found that biogenic ammonia produced by Lysinibacillus sphaericus can effectively extract copper and zinc from primary and secondary materials, with high yields and selectivity. Optimal leaching of copper from automotive shredder residues (ASR) was achieved through a refined two-step indirect leaching system. These results provide important insights for future sustainable metal recovery technologies.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Review
Construction & Building Technology
Xichen Xu, Hongxian Guo, Meng Li, Xuejie Deng
Summary: This paper reviews the application of green bio-cementation technique in ground improvement, highlighting the importance of CaCO3 cementation pattern and crystal polymorph in reflecting the efficiency of bio-cementation. The study comprehensively discusses the major factors affecting these aspects, aiming to provide insights for future bio-cementation improvement studies.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Agricultural Engineering
Meenaa Chandrasekar, Jeana L. Collins, Sanaz Habibi, Rebecca G. Ong
Summary: The tissue-specific biochemical heterogeneities of lignocellulosic biomass and their effect on biomass deconstruction can be best understood through the combination of confocal laser scanning microscopy (CLSM) and immunohistochemistry. A custom polydimethylsiloxane (PDMS) microfluidic imaging reactor was developed to overcome the challenges of studying fragile plant materials. The results showed that less lignified parenchyma cell walls are more susceptible to pretreatment, while highly lignified protoxylem cell walls are the most resistant during enzymatic hydrolysis.
BIORESOURCE TECHNOLOGY
(2024)
Article
Engineering, Chemical
Nieves Iglesias-Gonzalez, Antonio D. Dorado, Pablo Ramirez, Alfonso Mazuelos
Summary: A global process for recovering copper from end-of-life mobile phones is proposed, which combines bioleaching and solvent extraction and electrowinning to achieve efficient and sustainable copper recovery.
MINERALS ENGINEERING
(2024)
Article
Engineering, Environmental
Yudong Li, Xiaowen Chen, David A. Sievers
Summary: The deacetylation process in lignocellulosic biomass pretreatment can be made more efficient and economically favorable with a flow-through diffuser type reactor and a washing step before deacetylation. Understanding the fundamentals of flow through a compressible packed bed is crucial for scaling up the process. Modifying the classical Kozeny Carman equation and developing a compressible packed bed model can accurately predict pressure-drop and stabilize the bed from extensive compression.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Metallurgy & Metallurgical Engineering
Nieves Iglesias-Gonzalez, Francisco Carranza, Alfonso Mazuelos, Rafael Romero, Juan Lorenzo-Tallafigo, Aurora Romero-Garcia, Pablo Ramirez
Summary: In this study, a two-stage biohydrometallurgical process for copper extraction from waste PCBs was developed. The separation of chemical leaching of copper with ferric iron from the regeneration of the leaching agent by bacterial oxidation of the ferrous iron proved to be an efficient route for copper recovery. Increasing ferric iron concentration was found to enhance leaching rate, leading to 90% copper extraction achieved in 48 hours for large waste PCBs.
Article
Geosciences, Multidisciplinary
Alan Levett, Sarah A. Gleeson, Jens Kallmeyer
Summary: As society transitions to low-carbon, renewable energy resources, the demand for metals and minerals is set to increase. Harnessing microbe-mineral-metal interactions may offer many opportunities to improve some mining practises and support the long-term sustainability of mining. New technologies are needed to improve exploration and mining strategies as easily exploitable, high-grade deposits become increasingly depleted.
EARTH-SCIENCE REVIEWS
(2021)
Article
Engineering, Environmental
Seonki Lee, Peter Andreas Notzli, Michael Burkhardt, Bing Wu, Tzyy Haur Chong
Summary: This study examines the impact of hydraulic retention time (HRT) on the performance and biofilm characteristics of a gravity-driven membrane (GDM) reactor used for pretreating seawater. The results show that the GDM reactors with HRTs of 22 h and 102 h had higher permeate flux and better permeate quality (especially AOC) compared to the reactor with an HRT of 54 h. Extending the HRT helped reduce irreversible fouling, but cake layer fouling was highest at an HRT of 54 h. The different HRTs resulted in significant differences in microbial community structure and cake layer composition, with the higher cake layer resistance at an HRT of 54 h attributed to a more homogeneous biofilm with higher organic content and lower abundance of Nematoda (dominant predators). Finally, increasing the HRT by approximately 5 times (from 22 h to 102 h) improved the permeate flux by about 1.5 times, suggesting that a shorter HRT of 22 h is preferable for the GDM reactor in pretreating seawater in terms of treatment productivity and footprint.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Environmental Sciences
Darshna K. Patel, Devayani R. Tipre, Shailesh R. Dave
TOXICOLOGICAL AND ENVIRONMENTAL CHEMISTRY
(2017)
Article
Environmental Sciences
Sufiya A. Qureshi, Rizwana A. Qureshi, Asha B. Sodha, Devayani R. Tipre, Shailesh R. Dave
GEOMICROBIOLOGY JOURNAL
(2018)
Article
Engineering, Chemical
Kruti R. Shah, Srinivas M. Duggirala, Devayani R. Tipre, Shailesh R. Dave
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2017)
Article
Engineering, Chemical
Darshna K. Patel, Devayani R. Tipre, Shailesh R. Dave
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2017)
Article
Environmental Sciences
Asha B. Sodha, Sufiya A. Qureshi, Bhumika R. Khatri, Devayani R. Tipre, Shailesh R. Dave
WASTE AND BIOMASS VALORIZATION
(2019)
Article
Biotechnology & Applied Microbiology
Kinjal H. Upadhyay, Avni M. Vaishnav, Devayani R. Tipre, Bhargav C. Patel, Shailesh R. Dave
Article
Biotechnology & Applied Microbiology
Kinjal H. Upadhyay, Avni M. Vaishnav, Devayani R. Tipre, Bhargav C. Patel, Shailesh R. Dave
Article
Chemistry, Multidisciplinary
Asha B. Sodha, Monal B. Shah, Sufiya A. Qureshi, Devayani R. Tipre, Shailesh R. Dave
SEPARATION SCIENCE AND TECHNOLOGY
(2019)
Article
Biotechnology & Applied Microbiology
Avni Vaishnav, Kinjal Upadhayay, Devayani Tipre, Shailesh Dave
Article
Environmental Sciences
Nivedita Shivkumar Iyer, Dharamendra D. Mandaliya, Shailesh R. Dave
Summary: This study demonstrates the potential of phytoremediation by Cynodon sp. in crude oil contaminated soil fertilized with cow dung and corn silk. Despite some limitations, such as the inability to identify the specific plant species, the use of corn silk as fertilizer is a novel approach in the literature. The experiment conducted on sweet crude oil extracted from Gujarat, India adds new information to the existing literature.
INTERNATIONAL JOURNAL OF PHYTOREMEDIATION
(2022)
Article
Food Science & Technology
Avni Vaishnav, Kinjal Upadhyay, Manoj Koradiya, Devayani Tipre, Shailesh Dave
Summary: The aim of this research was to enhance the fermentative production of exopolysaccharide (EPS) using mixed fruit waste as a key substrate. By optimizing the medium formulation and utilizing response surface methodology, the production of EPS was significantly improved. The replacement of sucrose with fruit waste extract and the reduction in the use of specific components also reduced the production cost of EPS.
Article
Biotechnology & Applied Microbiology
Shweta Agrawal, Devayani Tipre, Shailesh R. Dave
Summary: This study developed a lab-scale Packed-Bed Biofilm Reactor (PBBR) packed with brick pieces for the decolourisation and biodegradation of textile industry effluent. The reactor achieved more than 99% dye decolourisation and >= 92% COD reduction in 6 hours under optimized conditions. In continuous mode, the PBBR showed >= 95% reduction in ADMI and COD values.
WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Bhumika R. Khatri, Devayani R. Tipre, Shailesh R. Dave
JOURNAL OF SUSTAINABLE METALLURGY
(2019)
Article
Green & Sustainable Science & Technology
Bhumika R. Khatri, Asha B. Sodha, Monal B. Shah, Devayani R. Tipre, Shailesh R. Dave
SUSTAINABLE ENVIRONMENT RESEARCH
(2018)
Article
Metallurgy & Metallurgical Engineering
Arsyad Maulana Dzulqornain, Ana Belen Cueva-Sola, Kyeong Woo Chung, Jin-Young Lee, Rajesh Kumar Jyothi
Summary: This study presents a hydrometallurgical process for the separation of light rare earth elements (LREEs) using oxidation, precipitation, solvent extraction, and stripping techniques. Selective oxidation with potassium permanganate was employed for the separation of cerium (III). Solvent extraction with Cyanex 572 and cross-current scrubbing were used to achieve the separation of lanthanum (III) from neodymium (III) and praseodymium (III).
Article
Metallurgy & Metallurgical Engineering
Bo Chen, Shenxu Bao, Yimin Zhang
Summary: This study investigated the effects of Al, Fe, P, Si and Na on the precipitation characteristics of vanadium in the ultrasound precipitation system. The concentration upper limits and the negative influence on the precipitation kinetics were determined for each impurity. The findings provide theoretical and technical support for the industrial application of ultrasound precipitation technology.
Article
Metallurgy & Metallurgical Engineering
Chunlin He, Mingwei Qi, Yun Liu, Zunzhang Liu, Yuezhou Wei, Toyohisa Fujita, Guifang Wang, Shaojian Ma, Wenchao Yang, Junyuan Gan
Summary: In this study, D201 x 7 resin and tartaric acid were used as materials and complexing agents for the separation of germanium from sulfuric acid solution. The study successfully achieved the separation of germanium and demonstrated the high selectivity and adsorption performance of the resin.
Article
Metallurgy & Metallurgical Engineering
Xiaobo Zhu, Yue Liu, Chen Ma, Wang Li
Summary: A selective and highly effective method for the extraction and separation of V(IV) and Fe(III) using N235 and P507 as solvent extractants is proposed. The pH, composition, and concentration of the extractant mixture have significant effects on the extraction efficiency and separation factor. The mixing of P507 and N235 generates the P507 monomer, which enhances the extraction efficiency and weakens the stability of vanadium containing extraction complex. Cation exchange process forms the extraction complexes.
Article
Metallurgy & Metallurgical Engineering
B. Behnajady, J. Yousefi Seyf, S. Karimi, M. Moradi, M. Sohrabi
Summary: Deep eutectic solvents (DES) have potential as environmentally-friendly solvents for recovering metals from spent lithium-ion batteries (LIBs). Experimental and molecular dynamics simulation results showed that the chloride ions in DES can form complexes with lithium, manganese, and nickel ions, facilitating their extraction.
Review
Metallurgy & Metallurgical Engineering
Sebastian Kinas, Dorota Jermakowicz-Bartkowiak, Anna Dzimitrowicz, Piotr Cyganowski
Summary: The high demand for platinum-group metals (PGMs) and Re in economical and industrial applications related to environmental protection and energy conversion/storage has led to resource scarcity. Thus, it is crucial to recover and recycle these rare metals. This study critically reviews the recent progress in the effective recovery of PGMs and Re from materials relevant to sustainable technologies, emphasizing practical aspects, environmental impact, and issues related to the unit processes of recovery.
Article
Metallurgy & Metallurgical Engineering
Guopeng Yang, Qinggang Li, Guiqing Zhang, Mingyu Wang, Zuoying Cao, Wenjuan Guan, Jiawei Du, Shengxi Wu
Summary: The study proposes an efficient, clean, and economical process for recovering V2O5 from titanium-white waste through hydrogen peroxide stripping and precipitation of vanadium products by heating. Experimental results show that the use of D2EHPA as a modifier prolongs the duration of maximum stripping efficiency, enabling continuous operation.
Article
Metallurgy & Metallurgical Engineering
Guisu Yu, Shuainan Ni, Yun Gao, Ditang Mo, Zhiyuan Zeng, Xiaoqi Sun
Summary: This research proposes a novel green process for the selective recovery of rare earth elements (RE) from spent NdFeB permanent magnet using hydrophobic deep eutectic solvent (HDES). Through optimization of extraction conditions and stripping method, efficient and clean separation and recovery have been achieved.
Article
Metallurgy & Metallurgical Engineering
Jia Li, Xinsheng Wu, Xiaozhou Zhou, Li Zeng, Shengxi Wu, Mingyu Wang, Wenjuan Guan, Zuoying Cao, Qinggang Li, Guiqing Zhang
Summary: This paper presents a complete hydrometallurgical route for the full-component utilization of deep-sea polymetallic nodules (DPN), achieving high recovery efficiency and near-zero waste production with low energy consumption.
Article
Metallurgy & Metallurgical Engineering
Sanae Elmisaoui, Abderrazak M. Latifi, Lhachmi Khamar
Summary: A first principles model is developed to describe the dissolution mechanism of phosphate ore particles in a solution of phosphoric acid. The model accounts for non-uniform size of ore particles using particle size distributions and quantifies their influence on the model predictions. A global estimability analysis is carried out to determine the estimable parameters from experimental data, and the predictions show good agreement with the experimental data. The computed activation energy indicates that diffusion is the rate limiting step of the dissolution process.