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Tao J, Li Z, Chen C, Liang R, Wu S, Lin F, Cheng Z, Yan B, Chen G. Intelligent technologies powering clean incineration of municipal solid waste: A system review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 935:173082. [PMID: 38740220 DOI: 10.1016/j.scitotenv.2024.173082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 03/01/2024] [Accepted: 05/07/2024] [Indexed: 05/16/2024]
Abstract
Cleanliness has been paramount for municipal solid waste incineration (MSWI) systems. In recent years, the rapid advancement of intelligent technologies has fostered unprecedented opportunities for enhancing the cleanliness of MSWI systems. This paper offers a review and analysis of cutting-edge intelligent technologies in MSWI, which include process monitoring, intelligent algorithms, combustion control, flue gas treatment, and particulate control. The objective is to summarize current applications of these techniques and to forecast future directions. Regarding process monitoring, intelligent image analysis has facilitated real-time tracking of combustion conditions. For intelligent algorithms, machine learning models have shown advantages in accurately forecasting key process parameters and pollutant concentrations. In terms of combustion control, intelligent systems have achieved consistent prediction and regulation of temperature, oxygen content, and other parameters. Intelligent monitoring and forecasting of carbon monoxide and dioxins for flue gas treatment have exhibited satisfactory performance. Concerning particulate control, multi-objective optimization facilitates the sustainable utilization of fly ash. Despite remarkable progress, challenges remain in improving process stability and monitoring instrumentation of intelligent MSWI technologies. By systematically summarizing current applications, this timely review offers valuable insights into the future upgrade of intelligent MSWI systems.
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Affiliation(s)
- Junyu Tao
- Interdisciplinary Innovation Lab for Environment & Energy, School of Mechanical Engineering, Tianjin University of Commerce, Tianjin 300134, China
| | - Zaixin Li
- Interdisciplinary Innovation Lab for Environment & Energy, School of Mechanical Engineering, Tianjin University of Commerce, Tianjin 300134, China
| | - Chao Chen
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Rui Liang
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Shuang Wu
- Interdisciplinary Innovation Lab for Environment & Energy, School of Mechanical Engineering, Tianjin University of Commerce, Tianjin 300134, China
| | - Fawei Lin
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Zhanjun Cheng
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China; Tianjin Key Lab of Biomass Wastes Utilization, Tianjin Engineering Research Center of Bio Gas/Oil Technology, Tianjin 300072, China
| | - Beibei Yan
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China; Tianjin Key Lab of Biomass Wastes Utilization, Tianjin Engineering Research Center of Bio Gas/Oil Technology, Tianjin 300072, China
| | - Guanyi Chen
- Interdisciplinary Innovation Lab for Environment & Energy, School of Mechanical Engineering, Tianjin University of Commerce, Tianjin 300134, China; School of Ecology and Environment, Tibet University, Lhasa 850012, China.
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Wang L, Tu H, Zhang H, Liang L, Jiang H, Wang D, Yan X, Xu Y. Characteristics of heavy metal migration during pyrolysis of typical oily wastes and environmental risk assessment of pyrolysis residues. WASTE MANAGEMENT (NEW YORK, N.Y.) 2024; 183:174-183. [PMID: 38759275 DOI: 10.1016/j.wasman.2024.05.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Revised: 04/22/2024] [Accepted: 05/12/2024] [Indexed: 05/19/2024]
Abstract
Solid-phase residues from pyrolysis of oily wastes (OS) are widely used due to their rich pore structure and strong adsorption capacity. In this study, pyrolysis residues (OS-P) were obtained from the pyrolysis treatment of four typical OS in Karamay, Xinjiang. The results indicate that the crystalline substances in OS-P mainly were SiO2, BaSO4, and graphite. The heavy metals of OS-P were higher than that of OS in the following order: Zn > Cu > Ni > Cr > Pb > Cd. The results of the improvement of Community Bureau of Reference (BCR) sequential extraction showed that the proportion of Cu, Ni and Cr in OS1-P in the residual fraction was higher than that of the other three OS. The residual fraction of Cu, Ni, and Cr in OS1-P increased from 16.0 %, 30.0 %, and 11.0 % to 66.1 %, 81.9 %, and 89.2 %, respectively. After pyrolysis treatment, the leaching concentration of heavy metals in the residue was reduced. Referring to the requirements for heavy metal control limits (GB 4284-2018), all heavy metals in OS-P showed low risk. Their potential ecological risk indices were 4.11, 3.13, 4.87 and 5.35, respectively, indicating that the potential ecological hazards of heavy metals from OS-P were slight. There was no significant effect on the histopathological changes of kidney, lung, liver, ovary and testis of mice, showing that the rational use of OS-P in production will not produce toxic effects on target animals. Based on risk assessment and safety evaluation, the application of OS-P is controllable, safe and reliable for resource utilization.
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Affiliation(s)
- Lili Wang
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment of the People's Republic of China, 8 Jiangwangmiao Street, Nanjing 210042, Jiangsu Province, China.
| | - Haifeng Tu
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment of the People's Republic of China, 8 Jiangwangmiao Street, Nanjing 210042, Jiangsu Province, China
| | - Houhu Zhang
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment of the People's Republic of China, 8 Jiangwangmiao Street, Nanjing 210042, Jiangsu Province, China
| | - Lichen Liang
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment of the People's Republic of China, 8 Jiangwangmiao Street, Nanjing 210042, Jiangsu Province, China
| | - Hao Jiang
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment of the People's Republic of China, 8 Jiangwangmiao Street, Nanjing 210042, Jiangsu Province, China
| | - Dan Wang
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment of the People's Republic of China, 8 Jiangwangmiao Street, Nanjing 210042, Jiangsu Province, China
| | - Xiaofei Yan
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment of the People's Republic of China, 8 Jiangwangmiao Street, Nanjing 210042, Jiangsu Province, China
| | - Yuanshun Xu
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment of the People's Republic of China, 8 Jiangwangmiao Street, Nanjing 210042, Jiangsu Province, China.
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Zhang C, Bai Z, Liu X, Xia D, Li X, Long J, Sun Z, Li Y, Sun Y. Co-incineration of medical waste in municipal solid waste incineration increased emission of chlorine/brominated organic pollutants. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 937:173544. [PMID: 38802016 DOI: 10.1016/j.scitotenv.2024.173544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2024] [Revised: 05/23/2024] [Accepted: 05/24/2024] [Indexed: 05/29/2024]
Abstract
Co-incineration of medical waste (MW) in municipal solid waste incinerators (MSWIs) is a crucial disposal method for emergency disposal of MW and the management of MW in small and medium-sized towns. This study aims to analyze and compare the levels and distribution patterns of chlorine/brominated dioxins and their precursors in fly ash from MSWIs and medical waste incinerators (MWIs) while also focusing on identifying the new pollution concerns that may arise from the co-incineration of municipal solid waste (MSW) mixed with MW (MSW/MW). The concentration of chlorobenzene (CBzs), polychlorinated biphenyls (PCBs) and polychlorinated dibenzo-p-dioxins/dibenzofurans (PCDD/Fs) in fly ash from co-incineration of MSW/MW are 887.4, 134.4 and 27.6 μg/kg, respectively, which are 5.1, 2.0 and 2.9 times higher than that from MSWIs. The levels of polybrominated dibenzo-p-dioxins/dibenzofurans (PBDD/Fs) are about three orders of magnitude lower than that of PCDD/Fs. For the fly ash from MSWIs, the predominant PCDD/Fs congener is OCDD, which prefers synthesis and adsorption on fine-grained fly ash. For fly ash from MWIs, the major PCDD/Fs congeners are 1, 2, 3, 4, 6,7, 8-HpCDF, and OCDF, which prefer synthesis and adsorption on coarse-grained fly ash. Correlation analysis exhibited that both 1,2,3-TriCBz and 1,2,4-TriCBz in fly ash have a markedly linear correlation with PCDD/Fs and PCBs, but PBDD/Fs shows a poor negative correlation with PCDD/Fs.
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Affiliation(s)
- Congcong Zhang
- School of Energy and Power Engineering, Beihang University, Beijing 100191, PR China
| | - Ziang Bai
- School of Energy and Power Engineering, Beihang University, Beijing 100191, PR China
| | - Xingshuang Liu
- School of Environmental Science and Engineering, Hainan University, Haikou 570228, PR China
| | - Dan Xia
- School of Energy and Power Engineering, Beihang University, Beijing 100191, PR China
| | - Xiang Li
- School of Energy and Power Engineering, Beihang University, Beijing 100191, PR China
| | - Jisheng Long
- Shanghai SUS Environment Co., LTD., Shanghai 201703, PR China
| | - Zhongtao Sun
- Shanghai SUS Environment Co., LTD., Shanghai 201703, PR China
| | - Yaojian Li
- Headquarters, China Tianying Inc., Jiangsu 226600, PR China
| | - Yifei Sun
- School of Energy and Power Engineering, Beihang University, Beijing 100191, PR China; School of Environmental Science and Engineering, Hainan University, Haikou 570228, PR China.
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Liu X, Wang Z, Wang J, Xing L, Li J, Dong Z, Li M, Han Y, Cao J. Characteristics of PM 2.5 bounded carbonaceous aerosols, carbon dioxide and its stable carbon isotopes (δ 13C) in rural households in northwest China: Effect of different fuel combustion. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 359:121004. [PMID: 38710146 DOI: 10.1016/j.jenvman.2024.121004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 04/10/2024] [Accepted: 04/21/2024] [Indexed: 05/08/2024]
Abstract
In order to fully understand the carbon emission from different fuels in rural villages of China, especially in the typical atmospheric pollution areas. The characteristics of carbonaceous aerosols and carbon dioxide (CO2) with its stable carbon isotope (δ13C) were investigated in six households, which two households used coal, two households used wood as well as two households used biogas and liquefied petroleum gas (LPG), from two rural villages in Fenwei Plain from March to April 2021. It showed that the fine particulate matter (PM2.5) emitted from biogas and LPG couldn't be as lower as expected in this area. However, the clean fuels could relatively reduce the emissions of organic carbon (OC) and element carbon (EC) in PM2.5 compare to the solid fuels. The pyrolyzed carbon (OP) accounted more total carbon (TC) in coal than the other fuels use households, indicating that more water-soluble OC existed, and it still had the highest secondary organic carbon (SOC) than the other fuels. Meantime, the coal combustions in the two villages had the highest CO2 concentration of 527.6 ppm and 1120.6 ppm, respectively, while the clean fuels could effectively reduce it. The average δ13C values (-26.9‰) was much lighter than almost all the outdoor monitoring and similar to the δ13C values for coal combustion and vehicle emission, showing that they might be the main contributors of the regional atmospheric aerosol in this area. During the sandstorm, the indoor PM2.5 mass and CO2 were increasing obviously. The indoor cancer risk of PAHs for adults and children were greater than 1 × 10-6, exert a potential carcinogenic risk to human of solid fuels combustion in rural northern China. It is important to continue concern the solid fuel combustion and its health impact in rural areas.
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Affiliation(s)
- Xiuqun Liu
- National Demonstration Center for Experimental Geography Education, School of Geography and Tourism, Shaanxi Normal University, Xi'an, China
| | - Zedong Wang
- National Demonstration Center for Experimental Geography Education, School of Geography and Tourism, Shaanxi Normal University, Xi'an, China
| | - Jingzhi Wang
- National Demonstration Center for Experimental Geography Education, School of Geography and Tourism, Shaanxi Normal University, Xi'an, China; Key Lab of Aerosol Chemistry & Physics, State Key Lab of Loess and Quaternary Geology (SKLLQG), Key Laboratory of Aerosol Chemistry and Physics, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China.
| | - Li Xing
- National Demonstration Center for Experimental Geography Education, School of Geography and Tourism, Shaanxi Normal University, Xi'an, China
| | - Jiayu Li
- Mechanical and Aerospace Engineering, University of Miami, Coral Gables, USA; Center for Aerosol Science & Technology, University of Miami, Coral Gables, USA
| | - Zhibao Dong
- National Demonstration Center for Experimental Geography Education, School of Geography and Tourism, Shaanxi Normal University, Xi'an, China
| | - Minrui Li
- National Demonstration Center for Experimental Geography Education, School of Geography and Tourism, Shaanxi Normal University, Xi'an, China
| | - Yongming Han
- Key Lab of Aerosol Chemistry & Physics, State Key Lab of Loess and Quaternary Geology (SKLLQG), Key Laboratory of Aerosol Chemistry and Physics, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China
| | - Junji Cao
- Key Lab of Aerosol Chemistry & Physics, State Key Lab of Loess and Quaternary Geology (SKLLQG), Key Laboratory of Aerosol Chemistry and Physics, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China; Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
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5
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Ling S, Jin S, Wang H, Zhang Z, Feng Y. Transportation infrastructure upgrading and green development efficiency: Empirical analysis with double machine learning method. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 358:120922. [PMID: 38657413 DOI: 10.1016/j.jenvman.2024.120922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 02/26/2024] [Accepted: 04/14/2024] [Indexed: 04/26/2024]
Abstract
In order to deal with the environmental problems such as pollution emissions and climate change, sustainable development in the field of transportation has gradually become a hot topic to all sectors of society. In addition, promoting the green and low-carbon transformation of China's transportation is also an important issue in the new era. Thus, it is particularly important to correctly identify the green effect of high-speed rail. However, the traditional causal reasoning model faces several challenges such as 'dimensional curse' and multicollinearity. Based on the panel data of 283 prefecture-level cities in China from 2003 to 2019, this study uses the double machine learning model to explore the impact of transportation infrastructure upgrading on the efficiency of urban green development in China. The research shows that the upgrading of transportation infrastructure can effectively improve the efficiency of urban green development by 4%. Service industry agglomeration and green innovation are verified as two mediating channels. Moreover, the synthetic difference in difference model is employed to evaluate the regional impact of high-speed rail, and finds that the regional impact of transportation policies often exceeds the impact of individual cities. We further apply the conclusions of this paper to the research at the micro enterprise level. Goodman-Bacon decomposition and a variety of robustness tests confirm the validity of our conclusions. The study's comprehensive empirical analysis not only validates the positive effects of transportation upgrades on green development, but also offers novel insights into the underlying mechanisms and policy implications of transportation upgrading.
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Affiliation(s)
- Shuai Ling
- College of Management and Economics, Tianjin University, Tianjin, 300072, China.
| | - Shurui Jin
- College of Management and Economics, Tianjin University, Tianjin, 300072, China.
| | - Haijie Wang
- Business School, Zhengzhou University, Zhengzhou, 450001, China.
| | - Zhenhua Zhang
- School of Economics, Lanzhou University, Lanzhou, 730000, China; Institute of Green Finance, Lanzhou University, Lanzhou, 730000, China.
| | - Yanchao Feng
- Business School, Zhengzhou University, Zhengzhou, 450001, China.
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Qu G, Liu G, Zhao C, Yuan Z, Yang Y, Xiang K. Detection and treatment of mono and polycyclic aromatic hydrocarbon pollutants in aqueous environments based on electrochemical technology: recent advances. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:23334-23362. [PMID: 38436845 DOI: 10.1007/s11356-024-32640-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 02/21/2024] [Indexed: 03/05/2024]
Abstract
Mono and polycyclic aromatic hydrocarbons are widely distributed and severely pollute the aqueous environment due to natural and human activities, particularly human activity. It is crucial to identify and address them in order to reduce the dangers and threats they pose to biological processes and ecosystems. In the fields of sensor detection and water treatment, electrochemistry plays a crucial role as a trustworthy and environmentally friendly technology. In order to accomplish trace detection while enhancing detection accuracy and precision, researchers have created and studied sensors using a range of materials based on electrochemical processes, and their results have demonstrated good performance. One cannot overlook the challenges associated with treating aromatic pollutants, including mono and polycyclic. Much work has been done and good progress has been achieved in order to address these challenges. This study discusses the mono and polycyclic aromatic hydrocarbon sensor detection and electrochemical treatment technologies for contaminants in the aqueous environment. Additionally mentioned are the sources, distribution, risks, hazards, and problems in the removal of pollutants. The obstacles to be overcome and the future development plans of the field are then suggested by summarizing and assessing the research findings of the researchers.
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Affiliation(s)
- Guangfei Qu
- Faculty of Environmental Science and Engineering, Kunming University of Science & Technology, Kunming, 650500, Yunnan, China.
| | - Guojun Liu
- Faculty of Environmental Science and Engineering, Kunming University of Science & Technology, Kunming, 650500, Yunnan, China
| | - Chenyang Zhao
- Faculty of Environmental Science and Engineering, Kunming University of Science & Technology, Kunming, 650500, Yunnan, China
| | - Zheng Yuan
- Faculty of Environmental Science and Engineering, Kunming University of Science & Technology, Kunming, 650500, Yunnan, China
| | - Yixin Yang
- Faculty of Environmental Science and Engineering, Kunming University of Science & Technology, Kunming, 650500, Yunnan, China
| | - Keyi Xiang
- Faculty of Environmental Science and Engineering, Kunming University of Science & Technology, Kunming, 650500, Yunnan, China
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Kumari S, Chowdhry J, Choudhury A, Agarwal S, Narad P, Garg MC. Machine learning approaches for the treatment of textile wastewater using sugarcane bagasse (Saccharum officinarum) biochar. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024:10.1007/s11356-024-31826-z. [PMID: 38227254 DOI: 10.1007/s11356-024-31826-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 12/29/2023] [Indexed: 01/17/2024]
Abstract
Most dyes present in wastewater from the textile industry exhibit toxicity and are resistant to biodegradation. Hence, the imperative arises for the environmentally significant elimination of textile dye by utilising agricultural waste. The achievement of this objective can be facilitated through the utilisation of the adsorption mechanism, which entails the passive absorption of pollutants using biochar. In this study, we compare the efficacy of the response surface methodology (RSM), the artificial neural network (ANN), the k-nearest neighbour (kNN), and adaptive neuro-fuzzy inference system (ANFIS) in removing crystal violet (CV) from wastewater. The characterisation of biochar is carried out by scanning electron microscope (SEM) and Fourier transform infrared (FTIR). The impacts of the solution pH, adsorbent dosage, initial dye concentration, and temperature were investigated using a variety of models (RSM, ANN, kNN, and ANFIS). The statistical analysis of errors was conducted, resulting in a maximum removal effectiveness of 97.46% under optimised settings. These conditions included an adsorbent dose of 0.4 mg, a pH of 5, a CV concentration of 40.1 mg/L, and a temperature of 20 °C. The ANN, RSM, kNN, and ANFIS models all achieved R2 0.9685, 0.9618, 0.9421, and 0.8823, respectively. Even though all models showed accuracy in predicting the removal of CV dye, it was observed that the ANN model exhibited greater accuracy compared to the other models.
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Affiliation(s)
- Sheetal Kumari
- Amity Institute of Environmental Science (AIES), Amity University Uttar Pradesh, Sector-125, Noida, 201313, Gautam Budh Nagar, India
| | | | - Alakto Choudhury
- Amity Institute of Biotechnology (AIB), Amity University Uttar Pradesh, Noida, India
| | - Smriti Agarwal
- Motilal Nehru National Institute of Technology Allahabad, Prayagraj, Uttar Pradesh, India
| | - Priyanka Narad
- Amity Institute of Biotechnology (AIB), Amity University Uttar Pradesh, Noida, India
- Division of Biomedical informatics, Indian Council of Medical Research, Ministry of Health and Family Welfare, New Delhi, 110029, India
| | - Manoj Chandra Garg
- Amity Institute of Environmental Science (AIES), Amity University Uttar Pradesh, Sector-125, Noida, 201313, Gautam Budh Nagar, India.
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He F, Wang F, Peng Y, Cui H, Lv G. Insight into the formation of polychlorinated dibenzo-p-dioxins and dibenzofurans in hazardous waste incineration and incinerators: Formation process and reduction strategy. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 345:118669. [PMID: 37506443 DOI: 10.1016/j.jenvman.2023.118669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 07/17/2023] [Accepted: 07/22/2023] [Indexed: 07/30/2023]
Abstract
Incineration technology has been widely adopted to safely dispose of hazardous waste (HW). While the incineration process causes the formation of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs). Due to its extreme toxicity, many scholars have been committed to determining the PCDD/F formation process and reducing emissions in incinerators. Previous studies ignored the impact of incineration and fluctuation of feeding materials on PCDD/F formation in hazardous waste incinerators (HWIs). In this study, differences in PCDD/F formation between HWIs and municipal solid waste incinerators (MSWIs) were pointed out. The incineration section in HWIs should be carefully considered. Laboratory experiments, conventional analysis and thermogravimetry experiments were conducted. An obvious disparity of PCDD/F formation between 12 kinds of HWs was found. Distillation residue was found with remarkably higher PCDD/F concentrations (11.57 ng/g). Except for the Cl content, aromatic rings and C-O bond organics were also found with high correlation coefficients with PCDD/F concentrations (>0.92). And PCDD/Fs were formed through a chlorination process and structure formation process. All of these are helpful to further understand the PCDD/F formation process during HW incineration, optimize the operation conditions in HWIs and reduce the emission pressure of PCDD/Fs in the future.
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Affiliation(s)
- Fengyu He
- Institute for Thermal Power Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Fei Wang
- Institute for Thermal Power Engineering, Zhejiang University, Hangzhou, 310027, China.
| | - Yaqi Peng
- Institute for Thermal Power Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Haibin Cui
- Institute for Thermal Power Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Guojun Lv
- Institute for Thermal Power Engineering, Zhejiang University, Hangzhou, 310027, China
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Lu M, Xue Y, Zhao H, Zhang X, Wang T. Effect of electromagnetic induction drying on the drying-incineration process of dyeing sludge: focus on migration and conversion of sulfur. WASTE MANAGEMENT (NEW YORK, N.Y.) 2023; 171:522-531. [PMID: 37806160 DOI: 10.1016/j.wasman.2023.10.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 09/15/2023] [Accepted: 10/03/2023] [Indexed: 10/10/2023]
Abstract
Secondary sulfur pollution in dyeing sludge (DS) during drying and incineration is a major environmental problem necessitating in-situ control. To robustly immobilise sulfur during drying-incineration, the authors introduce an electromagnetic induction (EMI) drying method and reveal the corresponding migration and conversion of sulfur in DS. The EMI-drying efficiency reached 10.69%/min, five times that of thermal drying. EMI drying increases the relative sulfoxide ratio from that of thermal drying. In a sludge-sulfur model, the proposed treatment promoted the oxidation and decomposition of organic sulfur without noticeably affecting the inorganic sulfur. The selective oxidation process during EMI drying promotes sulfur stabilisation in dried DS, decreasing the performance and stability of DS combustion. The sulfur-containing pollutants released during the incineration of DS mainly contain H2S, followed by CH3SH and SO2. EMI drying increases the outputs of SO2 and CH3SH but decreases the outputs H2S and total sulfur compared with the outputs of thermal drying. Under the sulfur-model conditions, EMI promoted the conversion of inorganic sulfur to sulfur-containing gases (especially H2S) during incineration. In contrast, the sulfur stabilised by partial oxidation of organic sulfur in the EMI-dried DS was not easily converted to gaseous sulfur during subsequent combustion. Overall, EMI inhibits the release of sulfur during the combined drying-incineration process of DS.
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Affiliation(s)
- Mengxin Lu
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China
| | - Yongjie Xue
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China
| | - Hui Zhao
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China
| | - Xiaoshan Zhang
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China
| | - Teng Wang
- School of Environmental Engineering, Wuhan Textile University, Wuhan 430073, China; Engineering Research Centre for Clean Production of Textile Dyeing and Printing, Ministry of Education, Wuhan Textile University, Wuhan 430073, China.
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Saravanan A, Ragini YP, Kumar PS, Thamarai P, Rangasamy G. A critical review on the removal of toxic pollutants from contaminated water using magnetic hybrids. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:105099-105118. [PMID: 37740158 DOI: 10.1007/s11356-023-29811-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 09/06/2023] [Indexed: 09/24/2023]
Abstract
The persistence of organic/inorganic pollutants in the water has become a serious environmental issue. Among the different pollutants, dyes and heavy metal pollution in waterways are viewed as a global ecological problem that can have an impact on humans, plants, and animals. The necessity to develop a sustainable and environmentally acceptable approach to remove these toxic contaminants from the ecosystem has been raised. In the past two decades, rapid industrialization and anthropogenic activities in developed countries have aggravated environmental pollution. Industrial effluents that are discharged directly into the natural environment taint the water, which has a consequence for the water resources. Magnetic nanohybrids are broadly investigated materials used in the adsorption and photocatalytic degradation of poisonous pollutants present across water effluents. In the present review, the toxic health effects of heavy metals and dyes from the water environment have been discussed. This paper reviews the role of magnetic nanohybrids in the removal of pollutants from the water environment, providing an adequate point of view on their new advances regarding their qualities, connection methodologies, execution, and their scale-up difficulties.
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Affiliation(s)
- Anbalagan Saravanan
- Department of Biotechnology, Saveetha School of Engineering, SIMATS, Chennai, 602105, India
| | | | - Ponnusamy Senthil Kumar
- Centre for Pollution Control and Environmental Engineering, Pondicherry University, Chinna Kalapet, Puducherry-605014, India.
| | - Packiyam Thamarai
- Department of Biotechnology, Saveetha School of Engineering, SIMATS, Chennai, 602105, India
| | - Gayathri Rangasamy
- School of Engineering, Lebanese American University, Byblos, Lebanon
- University Centre for Research and Development & Department of Civil Engineering, Chandigarh University, Gharuan, Mohali, Punjab, 140413, India
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Varol M, Gürel B, Yurdakul S, Kurtuluş K, Gürbüz H. PCDD/Fs, PAHs and HCl emissions from co-combustion of lignite and chicken manure in a circulating fluidized bed boiler with compact refractory casting. WASTE MANAGEMENT (NEW YORK, N.Y.) 2023; 168:423-430. [PMID: 37390797 DOI: 10.1016/j.wasman.2023.06.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 06/02/2023] [Accepted: 06/22/2023] [Indexed: 07/02/2023]
Abstract
Chicken manure (CM) should be used in energy production due to its high production potential for the waste-to-energy approach. Co-combustion of CM with lignites may be a good practice in terms of reducing its environmental impact and the need for fossil fuels. However, the level of organic pollutants originated from CM combustion is not clear. This study investigated the potential of CM to be combusted in a circulating fluidized bed boiler (CFBB) with a local lignite. Combustion and co-combustion tests of CM and Kale Lignite (L) were performed in the CFBB to measure PCDD/Fs, PAHs and HCl emissions. CM burned in the upper parts of the boiler due to its high volatile matter content and low density compared to coal. This caused the bed temperature to decrease with the increase in the amount of CM in the fuel mixture. It was also observed that the combustion efficiency increased as the share of CM in the fuel mixture increased. Total PCDD/F emissions increased with CM share in the fuel mixture. However, all are less than emission limit value (100 pg I-TEQ/m3). Co-combustion of CM with lignite at different ratios did not have a significant effect on HCl emissions. PAH emissions were found to increase with the increase of the CM share when the CM share was more than 50% by weight.
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Affiliation(s)
- Murat Varol
- Department of Environmental Engineering, Akdeniz University, Antalya 07070, Türkiye.
| | - Barış Gürel
- Mechanical Engineering Department, Süleyman Demirel University, Isparta, Türkiye.
| | - Sema Yurdakul
- Environmental Engineering Department, Süleyman Demirel University, Isparta, Türkiye.
| | - Karani Kurtuluş
- Mechanical Engineering Department, Süleyman Demirel University, Isparta, Türkiye.
| | - Habib Gürbüz
- Automotive Engineering Department, Süleyman Demirel University, Isparta, Türkiye.
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