Review
Environmental Sciences
Ewelina Grabias-Blicharz, Wojciech Franus
Summary: This review article focuses on the mechanochemistry of coal fly ash (CFA) and highlights the issue of fly ash from municipal solid waste (MSW). Fly ash is primarily used in the construction industry, chemical synthesis, and environmental engineering. However, the recycling rate for fly ash is low, and most of it ends up being landfilled. Mechanochemical processing of fly ash offers an eco-friendly, inexpensive, and efficient method for utilizing this abundant waste material.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Mitali Nag, Dania Labira, Takayuki Shimaoka, Hirofumi Nakayama, Teppei Komiya
Summary: The aim of this study was to examine the effect of size-fractionated bottom ash (BA) in immobilizing heavy metals in fly ash (FA), in order to enhance the effective utilization of resources. The results showed that both BA fractions significantly immobilized Pb and Zn through carbonation and pozzolanic reactions. This technique can minimize the amount of raw materials required, reduce waste sent to landfills, and create a new material for reuse.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Mi Yan, Xiaoqiang Wen, Yansong Sun, Zhihao Zhou, Jiahao Jiang, Ruixiong Hu, Yan Zhang, Dwi Hantoko
Summary: Desalination coupled with heavy metal solidification was investigated for the treatment of fly ash from hazardous waste incineration. Sintering not only reduces the bulk density of fly ash but also can reduce heavy metal leaching toxicity. The treated ash can meet the leaching limit of heavy metals for the flexible landfill in China, significantly saving landfill space.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Biotechnology & Applied Microbiology
Sekgele Bobby Taupedi, Venecio U. Ultra
Summary: The potential of Morupule fly ash as a soil amendment was evaluated by planting spinach and rape vegetables successively in Palapye soils added with different percentages of fly ash and various nutrient sources. The application of fly ash increased soil pH, electrical conductivity, and the total concentration of certain heavy metals, while compost increased the total concentration of zinc. Fly ash significantly reduced the available concentration of certain heavy metals in the soil. The best combination for yield and safe levels of heavy metals in the edible shoots was 10% fly ash combined with compost and fertilization.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Review
Green & Sustainable Science & Technology
Justyna Szerement, Alicja Szatanik-Kloc, Renata Jarosz, Tomasz Bajda, Monika Mierzwa-Hersztek
Summary: Zeolites are extensively studied materials for adsorption and ion exchange with wide applications in agriculture and environmental protection. Natural zeolites are widely researched as soil conditioners and fertilizer additives in agriculture, while synthesized zeolites are gaining attention in environmental remediation. Despite numerous studies on zeolites' applications in environmental protection, their full potential is yet to be fully explored.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Green & Sustainable Science & Technology
Wen Li, Wenxiang Wang, Dongqi Wu, Shanshan Yang, Hongsheng Fang, Shuiyu Sun
Summary: In this study, red mud was used as an additive to effectively stabilize heavy metals in municipal solid waste incineration fly ash (FA). The addition of red mud significantly reduced the leaching of Pb, Cr, and Zn from FA. It was found that the formation of new phases facilitated the solidification of heavy metals. This research provides a good method for the effective stabilization of heavy metals in FA and offers a new perspective on the reuse of red mud.
JOURNAL OF CLEANER PRODUCTION
(2023)
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
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
Construction & Building Technology
Chao-qiang Wang, Ke Liu, De-ming Huang, Qiao Chen, Min-jie Tu, Kai Wu, Zhong-he Shui
Summary: This study analyzed fly ash samples from four regions in China and found that they contain six heavy metal elements. Cd/Hg posed a high risk of environmental pollution, while Cr and As had the potential to cause carcinogenic risks to humans. The study also revealed the migration law and valence states of characteristic heavy metals, as well as a control model to limit heavy metal contents in fly ash.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2022)
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
Chemistry, Physical
Zehua Wang, Linhao Xu, Daishe Wu, Shili Zheng
Summary: The mesoporous tobermorite synthesized from fly ash showed high removal efficiency for Pb2+. The adsorption kinetic and isotherm data fit well with pseudo-second-order and Langmuir models, respectively, indicating the potential application of fly ash in treating industrial wastewater containing Pb2+.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Environmental Sciences
Xiaodong Ma, Tingshu He, Yongqi Da, Yongdong Xu, Zhenmin Wan
Summary: Incineration fly ash contains a significant amount of chloride, which hinders its resource utilization. Water washing effectively removes chlorides and soluble substances, increasing its disposal capacity. The study on the properties of water-washed incineration fly ash provides theoretical guidance for its safe disposal.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Environmental
Davide Bernasconi, Caterina Caviglia, Enrico Destefanis, Angelo Agostino, Renato Boero, Nicoletta Marinoni, Costanza Bonadiman, Alessandro Pavese
Summary: In this study, correlations between heavy metal content, particle size, speciation distribution, and water leaching in fly ash from municipal solid waste incineration were investigated. The results showed that heavy metal leaching is strongly related to speciation distribution and surface complexation on Al/Fe (hydr)oxide. The study also suggests that differences in speciation distribution, rather than heavy metal content or particle size, govern leaching potential in MSWI-FA.
Article
Green & Sustainable Science & Technology
Fang Liu, Ran Tang, Baomin Wang, Xiaosa Yuan
Summary: The study found that the fly ash-based geopolymer has good resistance to immersion, with the optimum curing concentration for Pb2+ being 2.0%. The curing effect is better than that of cement, with a mechanism that involves both chemical bonding and physical fixation.
Article
Biochemistry & Molecular Biology
Facun Jiao, Xulong Ma, Tao Liu, Chengli Wu, Hanxu Li, Zhongbing Dong
Summary: The study found that thermal treatment of municipal solid waste incineration fly ash in a reducing atmosphere can promote ash melting and prevent heavy metal vaporization.
Article
Environmental Sciences
Vimal Chandra Pandey
INTERNATIONAL JOURNAL OF PHYTOREMEDIATION
(2016)
Article
Ecology
Vimal Chandra Pandey, Nayan Sahu, Soumit K. Behera, Nandita Singh
ECOLOGICAL ENGINEERING
(2016)
Article
Ecology
Apurva Rai, Ashutosh Kumar Singh, Vimal Chandra Pandey, Nandita Ghosal, Nandita Singh
ECOLOGICAL ENGINEERING
(2016)
Article
Environmental Sciences
Vimal Chandra Pandey, Tripti Mishra
INTERNATIONAL JOURNAL OF PHYTOREMEDIATION
(2018)
Review
Green & Sustainable Science & Technology
Vimal Chandra Pandey, Omesh Bajpai, Nandita Singh
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2016)
Article
Plant Sciences
Vimal Chandra Pandey, Omesh Bajpai, Nandita Singh
URBAN FORESTRY & URBAN GREENING
(2016)
Article
Geochemistry & Geophysics
Tripti Mishra, Vimal Chandra Pandey, Pratiksha Singh, N. B. Singh, Nandita Singh
JOURNAL OF GEOCHEMICAL EXPLORATION
(2017)
Article
Geochemistry & Geophysics
Ashish Praveen, Vimal Chandra Pandey, Sonali Mehrotra, Nandita Singh
APPLIED GEOCHEMISTRY
(2019)
Article
Engineering, Environmental
Ashish Praveen, Vimal Chandra Pandey
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2020)
Article
Engineering, Environmental
Tripti Mishra, Vimal Chandra Pandey, Ashish Praveen, N. B. Singh, Nandita Singh, D. P. Singh
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2020)
Article
Engineering, Environmental
Deblina Maiti, Vimal Chandra Pandey
Summary: This study revealed that naturally growing plants have the potential to remediate fly ash dumps, improving nitrogen and phosphorus content. The vegetation included grasses, herbs, and tree saplings, with significant impacts on metal concentration in ash samples.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2021)
Article
Ecology
Jitendra Ahirwal, Vimal Chandra Pandey
Summary: Selective plantation and various soil amendments can enhance the recovery of degraded mine lands, providing economic, social, and environmental benefits to mining companies and local populations. Restoring the ecosystem in a way that delivers ecosystem services and aligns with international policies like the United Nations Sustainable Development Goals is essential.
RESTORATION ECOLOGY
(2021)
Article
Environmental Sciences
Vimal Chandra Pandey, Apurva Rai, Lal Singh, D. P. Singh
Summary: This study investigated the leaf litter decomposition of different plant species in the fly ash ecosystem. The results showed that Leucaena leucocephala had a faster decomposition rate and nutrient release, making it a suitable choice for the restoration of fly ash deposited sites.
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
(2022)
Article
Plant Sciences
Vimal Chandra Pandey, Nayan Sahu, D. P. Singh
URBAN FORESTRY & URBAN GREENING
(2020)
Article
Green & Sustainable Science & Technology
Apurva Rai, Vimal Chandra Pandey, Ashutosh Kumar Singh, Nandita Ghoshal, Nandita Singh
Summary: Research indicates that Butea monosperma plays an important role in urban forestry and greening projects, thanks to its multiple functions such as drought resistance, prevention of soil and water runoff, restoration of degraded land, livelihood security, and promoting sustainable development. Despite its significance, the global distribution of Butea monosperma is decreasing due to overexploitation and lack of awareness, categorizing it as an endangered species. Further research and conservation efforts are needed to protect and promote the use of this species.
ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY
(2021)
Article
Geochemistry & Geophysics
Om Prakash Kumar, Amiya S. Naik, P. Gopinathan, T. Subramani, Vishvajeet Singh, Prakash K. Singh, Uma K. Shukla, Arun Prabhu
Summary: This study characterizes lignite samples from Kapurdi, Giral, and Sonari mines in Rajasthan's Barmer Basin using petrographic and geochemical techniques. The results provide insights into the geochemical properties, hydrocarbon potential, depositional environment, and paleo-climatic conditions of these lignite deposits. The study finds high volatile matter and sulfur concentrations in the Barmer lignite deposits, as well as indications of a wet environment during organic material decomposition. The findings have implications for understanding the coalification profile and hydrocarbon source rock potential in the region.
JOURNAL OF GEOCHEMICAL EXPLORATION
(2024)
Review
Geochemistry & Geophysics
Ashkan Jahandari, Behnam Abbasnejad
Summary: The assessment of heavy metal concentrations in agricultural soil is important for crop safety and quality, as well as potential risks to human health. This review analyzed published data on seven heavy metals in Iranian farmland soils and found that nickel and cadmium exceeded permissible levels. Arsenic showed significant contamination in multiple provinces, while lead and cadmium were highly contaminated in Fars province. Overall, the contamination levels of heavy metals in Iranian agricultural soils were relatively low.
JOURNAL OF GEOCHEMICAL EXPLORATION
(2024)
Article
Geochemistry & Geophysics
Imran Ud Din, Said Muhammad, Shah Faisal, Inayat ur Rehman, Wajid Ali
Summary: The presence of heavy metal contamination in coal mines and surrounding environments in the Hangu and Kurram districts poses potential risks to the environment and human health.
JOURNAL OF GEOCHEMICAL EXPLORATION
(2024)
Article
Geochemistry & Geophysics
Douglas Almeida Silveira, Paola Ferreira Barbosa, Cassiano Costa e Castro, Guilherme Ferreira da Silva, Joseneusa Brilhante Rodrigues
Summary: This study analyzed apatite grains from the Angico dos Dias Carbonatite Complex region in Brazil using an electron probe microanalyzer. The results showed that the apatite grains had characteristics of metacarbonatitic lithotypes and some had undergone substitution processes. Statistical analysis helped identify the sources of the apatite grains and confirmed the presence of carbonatitic bodies in the area.
JOURNAL OF GEOCHEMICAL EXPLORATION
(2024)
