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Niu B, E S, Song Q, Xu Z, Han B, Qin Y. Physicochemical reactions in e-waste recycling. Nat Rev Chem 2024:10.1038/s41570-024-00616-z. [PMID: 38862738 DOI: 10.1038/s41570-024-00616-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/03/2024] [Indexed: 06/13/2024]
Abstract
Electronic waste (e-waste) recycling is becoming a global concern owing to its immense quantity, hazardous character and the potential loss of valuable metals. The many processes involved in e-waste recycling stem from a mixture of physicochemical reactions, and understanding the principles of these reactions can lead to more efficient recycling methods. In this Review, we discuss the principles behind photochemistry, thermochemistry, mechanochemistry, electrochemistry and sonochemistry for metal recovery, polymer decomposition and pollutant elimination from e-waste. We also discuss how these processes induce or improve reaction rates, selectivity and controllability of e-waste recycling based on thermodynamics and kinetics, free radicals, chemical bond energy, electrical potential regulation and more. Lastly, key factors, limitations and suggestions for improvements of these physicochemical reactions for e-waste recycling are highlighted, wherein we also indicate possible research directions for the future.
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Affiliation(s)
- Bo Niu
- Key Laboratory of Farmland Ecological Environment of Hebei Province, College of Resources and Environmental Science, Hebei Agricultural University, Baoding, China.
| | - Shanshan E
- College of Mechanical and Electrical Engineering, Hebei Agricultural University, Baoding, China
| | - Qingming Song
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Zhenming Xu
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Bing Han
- School of Agriculture, Food and Ecosystem Sciences, Faculty of Science, The University of Melbourne, Parkville, Victoria, Australia
- School of Engineering, Deakin University, Geelong, Victoria, Australia
| | - Yufei Qin
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, China
- Jiangxi Green Recycling Co., Ltd, Fengcheng, China
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2
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Li C, An X, Ren Q, Liu L, Long Y, Zhang H, Yang J, Nie S, Tian Z, Yang G, Cheng Z, Cao H, Liu H. Nanogrinding/ethanol activation facilitating lignin fractionation for preparation of monodispersed lignin nanoparticles. Int J Biol Macromol 2023; 227:608-618. [PMID: 36495988 DOI: 10.1016/j.ijbiomac.2022.12.051] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 11/23/2022] [Accepted: 12/06/2022] [Indexed: 12/13/2022]
Abstract
Lignin nanoparticles (LNPs), as one of green and sustainable biological macromolecules, have attracted great attention owing to their promising potentials in many valorized fields. However, the lignin heterogeneity seriously restricts the controllable preparation of LNPs. Herein, a facile nanogrinding activation combining anhydrous ethanol dissolution process was developed to efficiently homogenize lignin prior to gradient ethanol fractionation. Two lignin fractions were obtained from nanogrinding activation/ethanol dissolution followed by gradient ethanol fractionation: L-fractions and S-fractions. Therefore, monodispersed LNPs with unique concave hollow nanostructure and large particle size, and monodispersed LNPs with solid core nanostructure and small particle size were successfully prepared from L-fractions and S-fractions, respectively, via a GVL/water anti-solvent method. The proposed LNPs formation mechanisms facilitated by nanogrinding activation/ethanol dissolution treatment were demonstrated. This study put forwards a facile and green integrated approach for monodispersed LNPs preparation with controllable morphology and particle size.
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Affiliation(s)
- Chenxi Li
- Tianjin Key Laboratory of Pulp and Paper, State Key Laboratory of Biobased Fiber Manufacturing Technology, State Key Laboratory of Biobased Fiber Manufacturing Technology, Tianjin University of Science and Technology, No. 29, 13(th) Street, TEDA, Tianjin 300457, P. R. China
| | - Xingye An
- Tianjin Key Laboratory of Pulp and Paper, State Key Laboratory of Biobased Fiber Manufacturing Technology, State Key Laboratory of Biobased Fiber Manufacturing Technology, Tianjin University of Science and Technology, No. 29, 13(th) Street, TEDA, Tianjin 300457, P. R. China; Department of Chemical Engineering, University of New Brunswick, Fredericton, NB E3B 5A3, Canada.
| | - Qian Ren
- Tianjin Key Laboratory of Pulp and Paper, State Key Laboratory of Biobased Fiber Manufacturing Technology, State Key Laboratory of Biobased Fiber Manufacturing Technology, Tianjin University of Science and Technology, No. 29, 13(th) Street, TEDA, Tianjin 300457, P. R. China
| | - Liqin Liu
- Tianjin Key Laboratory of Pulp and Paper, State Key Laboratory of Biobased Fiber Manufacturing Technology, State Key Laboratory of Biobased Fiber Manufacturing Technology, Tianjin University of Science and Technology, No. 29, 13(th) Street, TEDA, Tianjin 300457, P. R. China; Department of Chemical Engineering, University of New Brunswick, Fredericton, NB E3B 5A3, Canada
| | - Yinying Long
- Tianjin Key Laboratory of Pulp and Paper, State Key Laboratory of Biobased Fiber Manufacturing Technology, State Key Laboratory of Biobased Fiber Manufacturing Technology, Tianjin University of Science and Technology, No. 29, 13(th) Street, TEDA, Tianjin 300457, P. R. China
| | - Hao Zhang
- Tianjin Key Laboratory of Pulp and Paper, State Key Laboratory of Biobased Fiber Manufacturing Technology, State Key Laboratory of Biobased Fiber Manufacturing Technology, Tianjin University of Science and Technology, No. 29, 13(th) Street, TEDA, Tianjin 300457, P. R. China
| | - Jian Yang
- Tianjin Key Laboratory of Pulp and Paper, State Key Laboratory of Biobased Fiber Manufacturing Technology, State Key Laboratory of Biobased Fiber Manufacturing Technology, Tianjin University of Science and Technology, No. 29, 13(th) Street, TEDA, Tianjin 300457, P. R. China
| | - Shuangxi Nie
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China
| | - Zhongjian Tian
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, PR China
| | - Guihua Yang
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, PR China
| | - Zhengbai Cheng
- Zhejiang Jing Xing Paper Joint Stock Co., Ltd., No. 1, Jing Xing Industry Zone, Jing Xing First Road, Caoqiao Street, Pinghu, Zhejiang Province 314214, PR China
| | - Haibing Cao
- Zhejiang Jing Xing Paper Joint Stock Co., Ltd., No. 1, Jing Xing Industry Zone, Jing Xing First Road, Caoqiao Street, Pinghu, Zhejiang Province 314214, PR China
| | - Hongbin Liu
- Tianjin Key Laboratory of Pulp and Paper, State Key Laboratory of Biobased Fiber Manufacturing Technology, State Key Laboratory of Biobased Fiber Manufacturing Technology, Tianjin University of Science and Technology, No. 29, 13(th) Street, TEDA, Tianjin 300457, P. R. China.
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Shi SX, Jiang SQ, Nie CC, Li B, Chang HH, Zhu XN. Innovative method for removing bromine in waste printed circuit boards: Ultrafine milling and porous media loaded debromination agent. ADV POWDER TECHNOL 2022. [DOI: 10.1016/j.apt.2022.103662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Boregowda N, Jogigowda SC, Bhavya G, Sunilkumar CR, Geetha N, Udikeri SS, Chowdappa S, Govarthanan M, Jogaiah S. Recent advances in nanoremediation: Carving sustainable solution to clean-up polluted agriculture soils. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 297:118728. [PMID: 34974084 DOI: 10.1016/j.envpol.2021.118728] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 12/05/2021] [Accepted: 12/20/2021] [Indexed: 06/14/2023]
Abstract
Agriculture is one of the foremost significant human activities, which symbolizes the key source for food, fuel and fibers. This activity results in a lot of ecological harms particularly with the excessive usage of chemical fertilizers and pesticides. Different agricultural practices have remained industrialized to advance food production, due to the growth in the world population and to meet the food demand through the routine use of more effective fertilizers and pesticides. Soil is intensely embellished by environmental contamination and it can be stated as "universal incline." Soil pollution usually occurs from sewage wastes, accidental discharges or as byproducts of chemical residues of unrestrained production of numerous materials. Soil pollution with hazardous materials alters the physical, chemical, and biological properties, causing undesirable changes in soil fertility and ecosystem. Engineered nanomaterials offer various solutions for remediation of contaminated soils. Engineered nanomaterial-enable technologies are able to prevent the uncontrolled release of harmful materials into the environment along with capabilities to combat soil and groundwater borne pollutants. Currently, nanobiotechnology signifies a hopeful attitude to advance agronomic production and remediate polluted soils. Studies have outlined the way of nanomaterial applications to restore the eminence of the environment and assist the detection of polluted sites, along with potential remedies. This review focuses on the latest developments in agricultural nanobiotechnology and the tools developed to combat soil or land and or terrestrial pollution, as well as the benefits of using these tools to increase soil fertility and reduce potential toxicity.
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Affiliation(s)
- Nandini Boregowda
- Nanobiotechnology Laboratory, DOS in Biotechnology, Manasagangotri, University of Mysore, Mysuru, 570 006, India
| | - Sanjay C Jogigowda
- Department of Oral Medicine & Radiology, JSS Dental College & Hospital, JSS Academy of Higher Education & Research, Sri Shivarathreeshwara Nagara, Mysuru, 570015, India
| | - Gurulingaiah Bhavya
- Nanobiotechnology Laboratory, DOS in Biotechnology, Manasagangotri, University of Mysore, Mysuru, 570 006, India
| | - Channarayapatna Ramesh Sunilkumar
- Nanobiotechnology Laboratory, DOS in Biotechnology, Manasagangotri, University of Mysore, Mysuru, 570 006, India; Global Association of Scientific Young Minds, GASYM, Mysuru, India
| | - Nagaraja Geetha
- Nanobiotechnology Laboratory, DOS in Biotechnology, Manasagangotri, University of Mysore, Mysuru, 570 006, India
| | - Shashikant Shiddappa Udikeri
- Agricultural Research Station, Dharwad Farm, University of Agricultural Sciences, Dharwad, 580005, Karnataka, India
| | - Srinivas Chowdappa
- Department of Microbiology and Biotechnology, Jnana Bharathi Campus, Bangalore University, Bengaluru, 560 056, Karnataka, India
| | - Muthusamy Govarthanan
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 41566, South Korea
| | - Sudisha Jogaiah
- Laboratory of Plant Healthcare and Diagnostics, PG Department of Biotechnology and Microbiology, Karnatak University, Dharwad, 580 003, India.
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Qin B, Yao Z, Deng K, Ruan J, Xu Z. Analysis of contaminants and their formation mechanism in the desiccation-dissociation process of organic impurity of waste glass. JOURNAL OF HAZARDOUS MATERIALS 2021; 416:125881. [PMID: 34492821 DOI: 10.1016/j.jhazmat.2021.125881] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 04/09/2021] [Accepted: 04/09/2021] [Indexed: 06/13/2023]
Abstract
The recovery of waste glass is an important issue in the fields of social sustainable development and resource recovery. The removal of organic impurity is the first step in the recovery of waste glass. Currently, desiccation-dissociation technology is advised to remove the organic impurity from waste glass. However, the risks of the organic impurity desiccation-dissociation process of waste glass have not been reported in the literature. In this paper, the environmental risks of the organic impurity desiccation-dissociation process of waste glass were assessed. The assessment results indicated that none of TSP (0.143 mg/m3), PM10 (0.090 mg/m3), heavy metals in air and residue after desiccation-dissociation were contaminated. However, the gas contained abundant organic contaminants, especially benzene, whose content was up to 5.26%. Molecular dynamics simulation and contaminant formation pathways analysis indicated that the formation of gaseous organic contaminants was because overmuch small molecular free radicals were generated at 200 °C and combined with each other. Hence, reducing the temperature of desiccation-dissociation, wearing gas masks, and placing organic gas contaminant absorption liquids are necessary protective measures. This paper provides scientific data for the green development of organic impurity desiccation-dissociation technology of waste glass. Meanwhile, this paper makes up for the shortage of the environmental information of the organic impurity desiccation-dissociation of waste glass.
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Affiliation(s)
- Baojia Qin
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-Sen University, 135 Xingang Xi Road, Guangzhou 510275, People's Republic of China
| | - Zichun Yao
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-Sen University, 135 Xingang Xi Road, Guangzhou 510275, People's Republic of China
| | - Kangzhi Deng
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-Sen University, 135 Xingang Xi Road, Guangzhou 510275, People's Republic of China
| | - Jujun Ruan
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-Sen University, 135 Xingang Xi Road, Guangzhou 510275, People's Republic of China.
| | - Zhenming Xu
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, People's Republic of China
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