Article
Chemistry, Multidisciplinary
Zhiwen Xu, Zhiyuan Liang, Huaishuang Shao, Qinxin Zhao
Summary: The hazardous waste of municipal solid waste incineration (MSWI) fly ash, which contains dioxins and leachable heavy metals, can be effectively stabilized and reused through microwave hydrothermal treatment with common additives such as Na2S, Na2SiO3, Na2B4O7, or H3BO3. The influence of additive-assisted microwave hydrothermal on heavy metals stabilization was studied at different temperatures, L/S ratios, time, and additive concentrations. The results showed that microwave hydrothermal with Na2S could enhance heavy metals stabilizing by forming zeolites for adsorption, precipitation, and converting heavy metals to a more stable state. This method greatly reduces reaction time and promotes waste utilization.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Engineering, Environmental
Xinyuan Zhan, Gunvor Marie Kirkelund
Summary: The study explored the use of electrodialytic remediation (ED) as a pre-treatment to remove heavy metals from MSWI fly ash before geopolymerization. The pre-treatment increased the reactivity of Si and Si/Al ratio in fly ash. A mixture of 80% coal fly ash and 20% ED treated fly ash with 8 M NaOH was found to have optimal compressive strength in geopolymerization.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Environmental
Eirik Nost Nedkvitne, Ornulf Borgan, Dag Oistein Eriksen, Haakon Rui
Summary: Our society generates a large amount of municipal solid waste (MSW), which is mainly incinerated for volume reduction and energy recovery, but incineration produces hazardous air pollution control (APC) residues that need proper treatment. Material recovery as an alternative to landfilling can reduce hazardous waste amounts and regenerate valuable products. Variations in chemical composition of APC residues within and between incineration plants were investigated, with significant differences found in chemical composition of APC residues from countries other than Sweden and Norway, emphasizing the importance of holistic approaches for waste valorization processes.
Article
Environmental Sciences
Huan Wang, Bing Zhao, Fenfen Zhu, Qian Chen, Tiantian Zhou, Yiyu Wang
Summary: This study investigated the removal effect of chlorine in municipal solid waste incineration (MSWI) fly ash through water washing, lactic acid, citric acid, and microwave treatment. XANES analysis was used to determine the chemical form of chlorine in fly ash, and heavy metals in fly ash were also examined. The results showed that double washing and triple washing could remove 88.0% and 95.5% of chlorine, respectively. The combination of double water washing with microwave or organic acid could remove about 96.6% of chlorine and a significant amount of insoluble chloride. Microwave treatment effectively stabilized heavy metals, while citric acid eluted heavy metals. The findings of this study provide guidance for pretreating fly ash before resource utilization.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Qian Chen, Yimeng Zhao, Qili Qiu, Xiaobo Liu, Shunda Lin, Xuguang Jiang
Summary: Valuable zeolites, such as NaP1, are synthesized from MSWI fly ash using a modified microwave-assisted hydrothermal method. The zeolites exhibit excellent photocatalytic performance in the degradation of methylene blue, attributed to the increased surface area and active metal elements embedded in the zeolite structures.
ENVIRONMENTAL RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Junjie Zhang, Bo Liu, Xiaoyan Zhang, Hanlin Shen, Jun Liu, Shengen Zhang
Summary: A novel technology based on alkali activation-crystallization strengthening was developed for the fabrication of glass ceramic foams with hierarchical pores. The effects of solid-liquid ratio and NaOH concentration on the pore structure, phase evolution and physical properties were investigated. The prepared samples exhibited high porosity, adequate compressive strength and bulk density.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Engineering, Chemical
Shunda Lin, Yimeng Zhao, Qian Chen, Xuguang Jiang
Summary: This paper investigates the drying characteristics of municipal solid waste incineration fly ash (MSWI FA) and explores the dynamics of the drying process using a thin-layer drying kinetic model for the first time. The experimental results show that the drying efficiency of MSWI FA increases with the increase of microwave power and fly ash particle size.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Zhikun Zhang, Zhichuan Li, Yibo Yang, Boxiong Shen, Jiao Ma, Lina Liu
Summary: In this study, municipal solid waste incineration fly ash was recycled into environmentally friendly glass-ceramics. The effects of different parameters on the crystalline phases, mechanical properties, and heavy metals leaching of the glass-ceramics were investigated. The results showed that the glass-ceramics exhibited stable crystalline phases, good mechanical properties, high alkali resistance, and low potential ecological risk, indicating their potential application feasibility.
CERAMICS INTERNATIONAL
(2022)
Article
Green & Sustainable Science & Technology
Chengcheng Fan, Baomin Wang, Hongmei Ai, Yi Qi, Ze Liu
Summary: The study found that using coal fly ash-based geopolymer for MSWI fly ash S/S treatment performed better than Portland cement, with higher compressive strength and higher immobilization rates for heavy metals.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Energy & Fuels
Jing Gao, Changqing Dong, Ying Zhao, Tong Xing, Xiaoying Hu, Xiaoqiang Wang
Summary: This study elucidated the effect of B2O3 on the melting characteristics of a multicomponent system, with results showing that an increase in B2O3 content led to a decrease in melting temperature, along with the formation of minerals impacting the melting process.
Article
Chemistry, Applied
Guiyun Yang, Qiangqiang Ren, Li Zhou, Pengpeng Li, Qinggang Lyu
Summary: SiO2 and Al2O3 are suitable additives for municipal solid waste incineration fly ash melting. The addition of SiO2 or Al2O3 significantly promotes the release of HCl. SiO2 has an obvious effect on reducing Cl percentage in residues, while Al2O3 is more likely to retain Cl in the residues.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Construction & Building Technology
Jun Liu, Guangming Xie, Zhengdong Wang, Canrong Zeng, Xu Fan, Zhenlin Li, Jie Ren, Feng Xing, Weizhuo Zhang
Summary: A new method of co-treatment of municipal solid waste incineration fly ash (MSWIFA) and municipal solid waste incineration bottom ash (MSWIBA) was proposed in this study. An alkali-activated binder was synthesized from MSWIFA and MSIWBA by Ca/Si ratio design. The results showed that a low concentration of alkali favors the development of compressive strength when more MSWIFA is used, while a high concentration of alkali is required in the MSWIBA-based binder system. Leaching tests demonstrated the effective immobilization of heavy metals, with their leaching concentrations below the relevant Chinese standards.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Environmental Sciences
Xinyuan Zhan, Li'ao Wang, Lei Wang, Jian Gong, Xiang Wang, Xue Song, Tengtun Xu
Summary: The study discussed the co-recycling of MSWI fly ash, electrolytic manganese residue, and other materials to produce lightweight ceramisites, determining the optimal mixture and sintering conditions. It also explored the volatilization rates and residual fractions of heavy metals in the ceramisites, providing a feasible method for producing green lightweight aggregates.
Article
Engineering, Environmental
Zhen Chen, Jiang-Shan Li, Chi-Sun Poon, Wen-Hao Jiang, Zi-Han Ma, Xin Chen, Jian-Xin Lu, Hao-Xin Dong
Summary: This study investigates the effects of one-step alkaline washing, one-step thermal quenching, and two-step combination of alkaline washing and thermal quenching pretreatment methods on the key properties of MSWIFA for promoting its reusability. The results show that the pretreatments can reduce particle size, increase pore volume and specific surface area, remove chloride and sulfate anions, and improve pozzolanic activities of the MSWIFA. The combined pretreatment method is the most effective in eliminating gas emission, reducing leaching of metal ions and anions from the ash, and enhancing the pozzolanic activity.
Article
Construction & Building Technology
Xiong Zhang, Baomin Wang, Jun Chang, Lin Shen, Tianru Li, Xiao Han, Ze Liu
Summary: The addition of admixtures of pozzolanic materials or solid wastes with municipal solid waste incineration fly ash (MSWIFA) can enhance the stability and solidification properties of alkali-activated MSWIFA specimens. By replacing 40% of MSWIFA with zeolite activated by Na2O center dot 1.7SiO(2)center dot nH(2)O (FZNS), the compressive strength of FZNS specimens can be increased by 129% and strength loss during high-temperature curing can be reduced. Zeolite addition also facilitates the formation of geopolymers and improves heavy metal solidification in FZNS specimens. The modification of compressive strength, high-temperature stability, and heavy-metal stabilization efficiency by zeolite promotes the future utilization of MSWIFA as an ecological resource.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Engineering, Environmental
Shun-Shun Chen, Xu-Xiu Chen, Tian-Yu Yang, Li Chen, Zheng Guo, Xing-Jiu Huang
Summary: A temperature-modulated sensing strategy was proposed to identify and determine BTEX compounds. Highly effective identification of BTEX was achieved using linear discrimination and convolutional neural network analyses. Additionally, quantitative analysis of concentration was accomplished by establishing the relationship between concentration and response.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Myungkyung Noh, Jeong Yeon Sim, Jisung Kim, Jee Hwan Ahn, Hye-Young Min, Jong-Uk Lee, Jong-Sook Park, Ji Yun Jeong, Jae Young Lee, Shin Yup Lee, Hyo-Jong Lee, Choon-Sik Park, Ho-Young Lee
Summary: This study reveals that chronic exposure to PM induces chronic inflammation and development of COPD by dysregulating NAD+ metabolism and subsequent SIRT1 deficiency in pulmonary macrophages. Activation of SIRT1 by resveratrol effectively mitigates PM-induced inflammation and COPD development. Targeting metabolic and epigenetic reprogramming in macrophages induced by PM is a promising strategy for COPD treatment.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yu Liu, Linlin Qin, Yiming Qin, Tong Yang, Haoran Lu, Yulong Liu, Qiqi Zhang, Wenyan Liang
Summary: Co/NC/PAC electrode was prepared by compounding ZIF-67 with powder-activated carbon for the electrocatalytic treatment of nitrogen-containing heterocyclic compounds. The degradation efficiency of the four compounds reached 90.2-93.7% under optimal conditions, and the degradation order was pyridazine < pyrimidine < pyrazine < pyridine.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Julien Couturier, Pierre Tamba Oulare, Blanche Collin, Claire Lallemand, Isabelle Kieffer, Julien Longerey, Perrine Chaurand, Jerome Rose, Daniel Borschneck, Bernard Angeletti, Steven Criquet, Renaud Podor, Hamed Pourkhorsandi, Guilhem Arrachart, Clement Levard
Summary: This study analyzes the properties of bauxite residue samples and explores the influence of bauxite ore origin, storage conditions, and storage time. The results show that the speciation of yttrium is related to the origin of bauxite ore, while no significant variation was observed with storage conditions or aging of the residues.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Sakthinarenderan Saikumar, Ravi Mani, Mirunalini Ganesan, Inbakandan Dhinakarasamy, Thavamani Palanisami, Dharani Gopal
Summary: Microplastic contamination in marine ecosystems poses a growing concern due to its trophic transfer and negative effects on marine organisms. This study investigates the transfer and impacts of polystyrene microplastics in an estuarine food chain. The results show that microplastics can be transferred through the food chain, although the transfer rates are low. The exposed organisms exhibit stress responses, suggesting the potential risk of microplastics reaching humans through the food chain.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Review
Engineering, Environmental
Yan-Jiao Li, Ying Yuan, Wen-Bing Tan, Bei-Dou Xi, Hui Wang, Kun-Long Hui, Jia-Bao Chen, Yi-Fan Zhang, Lian-Feng Wang, Ren-Fei Li
Summary: This review investigated and analyzed the distribution, composition, and abundance of heavy metals and antibiotic resistance genes (ARGs) in landfill. The results showed that heavy metals have lasting effects on ARGs, and complexes of heavy metals and organic matter are common in landfill. This study provides a new basis to better understand the horizontal gene transfer (HGT) of ARGs in landfill.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Jessy Joseph, Ari Vaisanen, Ajay B. Patil, Manu Lahtinen
Summary: Efficient and environmentally friendly porous hybrid adsorbent beads have been developed for the removal of arsenic from drinking water. The structural tuning of the adsorbents has been shown to have a significant impact on their adsorption performance, with high crystallinity leading to increased adsorption capacity and selectivity towards As5+.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yangyang Liu, Minhua Xiao, Kaiqin Huang, Juntao Cui, Hongli Liu, Yingxin Yu, Shengtao Ma, Xihong Liu, Meiqing Lin
Summary: This study measured the levels of phthalate metabolites in breast milk collected from mothers in southern China. The results showed that phthalates are still prevalent in the region, and breastfeeding contributes to phthalate intake in infants. However, the levels detected do not pose significant health risks to infants based on dietary exposure. The increasing exposure to certain phthalates calls for further research into their sources and potential risks.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhiqiang Wu, Jianxing Sun, Liting Xu, Hongbo Zhou, Haina Cheng, Zhu Chen, Yuguang Wang, Jichao Yang
Summary: Ocean depth affects microbial diversity, composition, and co-occurrence patterns of microplastic microbial communities. Deterministic processes dominate the assembly of mesopelagic plastisphere microbial communities, while stochastic processes shape the assembly of bathypelagic microbial communities. The relationships between microorganisms in the mesopelagic layer are more complex and stable, with Proteobacteria and Actinobacteriota playing important roles.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Tingting Xiao, Renjie Chen, Chen Cai, Shijie Yuan, Xiaohu Dai, Bin Dong, Zuxin Xu
Summary: Based on the efficiency of catalytic ozonation techniques in enhancing sludge dewaterability, this study investigated its effectiveness in simultaneous reduction of antibiotics and antibiotic resistance genes. The results showed that catalytic ozonation conditioning changed the distribution of antibiotics and achieved high degradation rates. It also significantly reduced the abundance of ARGs, inhibited horizontal gene transfer, and decreased the signal transduction of typical ARGs host bacteria.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yang Deng, Xiaohong Guan
Summary: This article discusses two different development approaches for ferrate(VI) technology in water treatment, arguing that process integration is a promising method that can drive technological innovation and revolution in water treatment, achieving higher treatment efficiency, reduced costs and energy consumption, and a smaller physical footprint.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhe Zhang, Lu Zhang, Zhihao Huang, Yuxin Xu, Qingqing Zhao, Hongju Wang, Meiqing Shi, Xiangnan Li, Kai Jiang, Dapeng Wu
Summary: In this study, a floating catalytic foam was designed and prepared to enhance the mass transfer in immobilized photocatalysts for wastewater treatment. The floating catalytic foam could float on the water surface and establish a temperature gradient, effectively promoting the diffusion and adsorption of target molecules during the photocatalytic process.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Muhammad Nafees, Adiba Khan Sehrish, Sarah Owdah Alomrani, Linlin Qiu, Aasim Saeed, Shoaib Ahmad, Shafaqat Ali, Hongyan Guo
Summary: The accumulation of cadmium and antibiotics in edible plants and fertile soil is a worldwide problem. This study investigated the potential of zinc oxide nanoparticles to alleviate the toxicity of both cadmium and antibiotics and promote spinach growth.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Lurui Wan, Kai Wang, Yuan Chen, Zhiyong Xu, Wenbo Zhao
Summary: In this study, a low viscosity and high thermal stability SO2 absorbent with dual interacting sites was successfully synthesized. The absorbent showed the highest absorption enthalpy change and entropy change values among reported SO2 absorbents, and exhibited lower viscosity and comparable thermal stability to ILs.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhengwei Zhou, Guojie Ye, Yang Zong, Zhenyu Zhao, Deli Wu
Summary: This study utilized Mo powder and STPP to enhance the performance of the sodium percarbonate system in pollutant degradation. The presence of Mo and STPP resulted in a higher degradation rate of the model pollutant SMX, with low oxidant consumption. The system generated multiple active species through a series of chain reactions at different pH values, exhibiting excellent performance towards electron-rich pollutants. Furthermore, Mo demonstrated excellent stability and reusability.
JOURNAL OF HAZARDOUS MATERIALS
(2024)