Review
Engineering, Marine
Dario De Fazio, Luca Boccarusso, Antonio Formisano, Antonio Viscusi, Massimo Durante
Summary: This article summarizes the current state of the art of recycling technologies for polymeric composites commonly used in industrial applications, including chemical, thermal, and mechanical methods. The advantages, drawbacks, applications, and properties of the recycled composites are analyzed for each recycling method.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Engineering, Environmental
Changfa Wu, Abhishek Kumar Awasthi, Wenqing Qin, Wei Liu, Congren Yang
Summary: This article critically reviews the integrated and systematic processes for metallic recovery from waste electronic components. It provides guidance for the development of clean and efficient recycling technology for electronic waste and addresses various scientific and technological challenges in the circular economy.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Review
Engineering, Environmental
Ankur Srivastava, Arunabh Meshram
Summary: The objective of this review is to evaluate various aspects of aluminium dross, including its generation, classification, properties, applications, and recycling techniques. Aluminium dross, a by-product of the aluminium industry, is recycled through pyrometallurgy, hydrometallurgy, and hydrothermal processes to recover aluminium and generate valuable products. Pyrometallurgy, particularly through Rotary salt furnace and salt-free technologies, dominates the industrial scale recycling. On the laboratory research front, hydrometallurgy and hydrothermal processes show promise. These processes produce products such as zeolites, ion exchangers, molecular sieves, and layered double hydroxides, as well as gases like H2, CH4, and NH3. The advantages and disadvantages of each route determine their applicability. Investigation of each route is vital due to the abundance of modern technologies emphasizing aluminium dross recycling. This recycling also contributes to the preservation of natural resources and addresses the adverse effects of improper dross disposal on human health and the environment.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Review
Engineering, Chemical
Kumar Debajyoti Jena, Ying Xu, Muhammad D. Hayat, Wen Zhang, Peng Cao
Summary: Titanium has excellent properties but its high production cost and environmental issues have led to research on new methods for economically and environmentally friendly high-purity titanium production, focusing on electrolysis processes and hydrogen-assisted methods.
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
Energy & Fuels
Chengwang Zhao, Chen Hong, Jiashuo Hu, Yi Xing, Wei Ling, Bo Zhang, Yijie Wang, Lihui Feng
Summary: This paper reviews the research progress of heteroatomic compound treatment technology in bio-oil. Various techniques such as biomass washing treatments, catalytic cracking, catalytic hydrotreating, and other techniques like adsorption denitrification and adsorption dichlorination and co-pyrolysis are used to remove the heteroatomic compounds in bio-oil. The removal effects of different catalysts and methods are compared and discussed in this study.
Review
Chemistry, Physical
Rahul Rautela, Bholu Ram Yadav, Sunil Kumar
Summary: This review discusses current technologies for the secondary utilization and recycling of used LiBs, aiming to improve the recycling efficiency of waste LiBs for industrialization and sustainability. A bibliometric analysis using VOSviewer software demonstrated that biological techniques have not been sufficiently developed compared to other technologies. Additionally, advances in biological approaches such as bioleaching, biosorption, and bio-electrochemical systems for metal recovery from waste LiBs are briefly overviewed. New directions for effective waste LiBs processing towards resource/waste management sustainability are also identified.
JOURNAL OF POWER SOURCES
(2023)
Article
Energy & Fuels
Kun-Lang Lu, Fan Yin, Xian-Yong Wei, Jia-Hao Li, Zhuang Li, Zi-Chun Fan, Zhi-Min Zong
Summary: In this study, Ni15Co5/ZrO2, Ni15Fe5/ZrO2, and Ni-15/ZrO (2) catalysts were applied for p-cresol deoxygenation. It was found that the introduction of Co or Fe altered the electronic structure of the catalyst surface, leading to different deoxygenation activity and yield.
Article
Food Science & Technology
Luis Filipe-Ribeiro, Susete Rodrigues, Fernando M. Nunes, Fernanda Cosme
Summary: The research highlights the negative impact of bulk transportation on white wine color characteristics by increasing dissolved oxygen content, leading to free sulfur dioxide loss during storage. However, deoxygenation of white wines can help reduce the increase in yellow color during storage, preserving the wine's color characteristics.
Article
Chemistry, Physical
Ying Zhang, Pei Sun, Zak Fang, Shili Zheng, Xiaofang Zhu
Summary: This study experimentally determined the oxygen removal limits using the novel hydrogen-assisted Mg deoxygenation method in the titanium industry. The deoxygenation kinetics were modeled based on non-steady-state radial diffusion. The results showed that the equilibrium time was slightly affected by the initial oxygen content in titanium but strongly influenced by particle size.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Review
Green & Sustainable Science & Technology
Fan Zhang, Yuting Zhao, Dandan Wang, Mengqin Yan, Jing Zhang, Pengyan Zhang, Tonggui Ding, Lei Chen, Chao Chen
Summary: The review summarizes advanced nonbiodegradable plastic waste treatment technologies, analyzes their mechanisms and development status, and proposes an outlook for industrial application to effectively address NPW issues.
JOURNAL OF CLEANER PRODUCTION
(2021)
Review
Environmental Sciences
Rekha Pachaiappan, Saravanan Rajendran, Pau Loke Show, Kovendhan Manavalan, Mu Naushad
Summary: Many microbial species causing infectious disease have become a social burden and threat to communities worldwide. The emergence of nanoparticles has shown potential in targeting and destroying microbes. Metal and metal oxide nanocomposites have gained interest for their antibacterial properties by damaging bacterial cell walls and leading to bacterial death.
Review
Engineering, Environmental
Gautam Mishra, Rohit Jha, Arunabh Meshram, Kamalesh K. Singh
Summary: This article focuses on metal recovery from spent LIBs by utilizing various recycling routes, including conventional hydrometallurgy and pyrometallurgy methods, as well as modern trends like pyro-hydrometallurgy and bio-metallurgy. The structured discussion highlights the extraction routes, sorting, pre-treatment, and processes employed in metal recovery. Various leaching and recovery processes are illustrated to provide a holistic idea of material recycling, with a review of published works in the past two decades on recovering metals such as lithium and cobalt from spent LIBs.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Multidisciplinary Sciences
Young-Gwan Choi, Daegeun Jo, Kyung-Hun Ko, Dongwook Go, Kyung-Han Kim, Hee Gyum Park, Changyoung Kim, Byoung-Chul Min, Gyung-Min Choi, Hyun-Woo Lee
Summary: The orbital Hall effect refers to the generation of transverse electron angular momentum flow in an external electric field. Contrary to common belief, theoretical studies suggest that the orbital Hall effect can be strong in transition metals and is an important factor in the spin Hall effect. Despite growing circumstantial evidence, direct detection of the orbital Hall effect remains challenging.
Article
Materials Science, Multidisciplinary
Xin-Ran Li, Qin-Hao Zhang, Xian-Ze Meng, Lian-Kui Wu, Fa-He Cao
Summary: The study found that the behaviors of hydrogen evolution reaction on titanium surfaces with different treatments vary, mainly due to the change in electronic structure of the passive film caused by the treatments.
