Article
Environmental Sciences
Sergey M. Abramov, Jing He, Dominik Wimmer, E. Marie Muehe, Thomas Helle, Harald Thorwarth, Andreas Kappler
Summary: In this study, the feasibility of using processed municipal solid waste incineration (PIR) containing gold for extraction was evaluated. A two-stage extraction process involving acidification and leaching with thiourea and Fe3+ as an oxidant was proposed. Results showed that 16.4 +/- 1.56 mg/kg of gold could be recovered from the PIR within 6 hours.
JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT
(2022)
Article
Environmental Sciences
Klemens Kremser, Sophie Thallner, Dorina Strbik, Sabine Spiess, Jiri Kucera, Tomas Vaculovic, Dalibor Vsiansky, Marianne Haberbauer, Martin Mandl, Georg M. Guebitz
Summary: This study investigated the use of acidophilic bioleaching bacteria to recover valuable metals from incineration residues, with A. ferrooxidans showing high extraction efficiency for Zinc, Cobalt, Copper, and Manganese. Analysis using ICP-MS revealed economically attractive concentrations of various metals in the ashes and slags. The biological approach showed advantages over conventional processes in terms of acid usage, temperature requirements, and emission of toxic gases.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Biotechnology & Applied Microbiology
Yuyang Long, Junjian Qiu, Qiqi Bao, Foquan Gu, Zixiao Wu, Minjin Wu, Wenxin Guo, Dongsheng Shen
Summary: The study found that the addition of Fe2O3 and treatment temperature have a significant impact on the leaching behavior of chromium in hazardous waste incineration fly ash. Proper amount of Fe2O3 can inhibit both static and dynamic leaching of chromium, while excessive Fe2O3 addition can accelerate the dynamic leaching rate of chromium.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Engineering, Environmental
Yonghao Zhu, Yanjun Hu, Qianqian Guo, Lingqin Zhao, Lianming Li, Yihong Wang, Guixiang Hu, Haryo Wibowo, Francesco Di Maio
Summary: The study investigated the effect of wet treatment on reducing heavy metal and salt leaching potential in bottom ash. The results showed that wet treatment significantly decreased the leaching concentration of Cu, Zn, Ni, and other targeted elements, improving the suitability of municipal solid waste incineration bottom ash for reutilization.
ENVIRONMENTAL ENGINEERING SCIENCE
(2022)
Article
Environmental Sciences
Yuyang Long, Junjian Qiu, Xiaodong Ding, Dongsheng Shen, Foquan Gu
Summary: This study examined the influence of the interaction between Fe-based substances and thermal treatment parameters on the leaching behavior of Cr in HWIFA. The results showed significant differences in the effects on static and dynamic leaching behaviors of Cr when Fe2O3, Fe3O4, and Fe were added. The thermal treatment temperature was the most significant factor affecting static leaching, while the interaction between temperature and Fe2O3 addition had the most important influence on dynamic leaching behavior of Cr.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Environmental
Xuankun Wei, Chunling Dong, Feng Xie, Pengju Wang, Feng Yan, Zuotai Zhang
Summary: In this study, the addition of a small amount of CaO to geopolymer effectively reduced the leaching concentration of heavy metals. The porosity of the geopolymer was also reduced, resulting in a more uniform distribution of hydration products on the particle surface. This enhanced distribution contributed to a stronger encapsulation effect, effectively sealing heavy metal ions within the HFA and HBA particles. The geopolymer incorporating CaO was deemed suitable for the safe treatment mandated by GB18598-2019.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Environmental Sciences
Yuhui Wang, Jinwen Hu, Huabo Gong, Cheng Qi, Nanwen Zhu
Summary: This study aimed to evaluate the durability of Sodium dimethyl dithiocarbamate (SDD)-stabilized air pollution control (APC) residues and determine the relationship between heavy metal leaching and environmental factors. The results showed that acidic and aerated conditions and temperatures above 40 degrees C accelerated SDD decomposition and reduced the durability of SDD-stabilized APC residues. The decline in durability was attributed to acid hydrolysis, thermal decomposition, and oxidative damage of SDD, leading to the breakage of the chelated sulfur-metal bond.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Engineering, Environmental
Mingxue Xin, Yingjie Sun, Yinkai Wu, Weihua Li, Junquan Yin, Yuyang Long, Xuebin Wang, Ya-nan Wang, Yaomin Huang, Huawei Wang
Summary: The standard methods for assessing the leaching risk of heavy metals from MSW incineration fly ash in a landfill are not effective. This study investigated the leaching characteristics of Cd, Cu, Pb, Zn, Cr, and Ni during the co-landfilling of chelating agents or phosphate stabilized fly ash and MSW under rainfall conditions. The results showed that evaluating the leaching risk according to actual disposal scenarios is a more effective method.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Chemistry, Multidisciplinary
Dongwoo Kang, Yunsung Yoo, Jinwon Park
Summary: This study compares the leaching effects of strong acids and weak acids on heavy metals in municipal solid waste incineration fly ash, with weak acids showing more significant extraction of heavy metals. Analysis of solids and leaching solutions suggests that HNO3 solution is the most suitable solvent for extracting heavy metals.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Energy & Fuels
Xing Chuai, Qinghua Yang, Tiantian Zhang, Yongchun Zhao, Jiang Wang, Guodong Zhao, Xiangzheng Cui, Yili Zhang, Tianle Zhang, Zhuo Xiong, Junying Zhang
Summary: Fly ash from municipal solid waste incineration (MSWI) is classified as hazardous waste due to its high content of heavy metals, dioxins, and other hazardous substances. This study investigated the physical and chemical properties, enrichment pattern, fugacity pattern, and leaching toxicity of four types of MSWI fly ash. The results showed that the content and distribution of heavy metals were influenced by particle size and the injection of CaO.
Article
Construction & Building Technology
Xiaolong Sun, Zhixin Ou, Tianyuan Zhao, Xiao Qin, Jiao Jin, Huayang Yu, Lijuan Li
Summary: This paper investigated the interaction between fly ash and asphalt from different sources and the performance of fly ash-asphalt mortar, aiming to find the best replacement amount of fly ash. The results indicated that fly ash had good compatibility with asphalt and excellent high-temperature performance and elastic recovery ability, but the low-temperature performance was weakened. The recommended replacement amount of fly ash was 25% to 50%.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
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
Agricultural Engineering
Joshua O. Ighalo, Jeanet Conradie, Chinemerem R. Ohoro, James F. Amaku, Kabir O. Oyedotun, Nobanathi W. Maxakato, Kovo G. Akpomie, Emmanuel S. Okeke, Chijioke Olisah, Alhadji Malloum, Kayode A. Adegoke
Summary: The growing population and industrial activities have increased energy demand, leading to the depletion of fossil fuels and environmental issues. This review focuses on the conversion of coconut biomass residue into biochar, discussing production methods, properties, and versatile applications. Various techniques, such as pyrolysis and gasification, have been explored for sustainable resource utilization. The biochar produced from coconut residues has shown potential in wastewater treatment, soil amendment, and carbon sequestration due to its distinct physicochemical properties.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Engineering, Environmental
Xinlei Sun, Yaolin Yi
Summary: This study systematically investigated the acid washing process of incineration bottom ash (IBA) of municipal solid waste, focusing on the removal and leaching of heavy metals. Results showed varying efficiencies in metal removal and leaching reduction for different metals, with a similar metal concentration-pH profile observed in both washing and leaching processes.
Article
Construction & Building Technology
Chuantong Wang, Peng Zhang, Jinjun Guo, Hongsen Zhang, Tingya Wang
Summary: The addition of MSWIFA to geopolymer composites affects the pore structure and microstructure, but can effectively immobilize heavy metal ions. The addition of coal fly ash degrades the pore performance, but within a certain range, it can improve the pore distribution. Different proportions of MSWIFA show similar reactivity and hydration product composition in geopolymer paste.
Article
Water Resources
Lotta Sartz, Mattias Backstrom, Stefan Karlsson, Bert Allard
MINE WATER AND THE ENVIRONMENT
(2016)
Article
Energy & Fuels
Naeem Saqib, Mattias Backstrom
Article
Energy & Fuels
Naeem Saqib, Mattias Backstrom
Article
Engineering, Environmental
Per Angelstam, Kjell Andersson, Maths Isacson, Dmitri V. Gavrilov, Robert Axelsson, Mattias Backstrom, Erik Degerman, Marine Elbakidze, Elena Yu. Kazakova-Apkarimova, Lotta Sartz, Stefan Sadbom, Johan Tornblom
Article
Environmental Sciences
S. Henriksson, J. Hagberg, M. Backstrom, I. Persson, G. Lindstrom
ENVIRONMENTAL POLLUTION
(2013)
Article
Environmental Sciences
Bert Allard, Mattias Backstrom, Stefan Karlsson, Anja Grawunder
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2014)
Article
Engineering, Environmental
Naeem Saqib, Mattias Backstrom
Article
Environmental Sciences
Mattias Backstrom, Lotta Sartz
WATER AIR AND SOIL POLLUTION
(2011)
Article
Water Resources
Lotta Sartz, Mattias Backstrom
MINE WATER AND THE ENVIRONMENT
(2013)
Article
Environmental Sciences
Jean-Noel Uwayezu, Leo W. Y. Yeung, Mattias Backstrom
Article
Water Resources
Kristina Ahlgren, Viktor Sjoberg, Anja Grawunder, Bert Allard, Mattias Backstrom
MINE WATER AND THE ENVIRONMENT
(2020)
Article
Environmental Sciences
Kristina Ahlgren, Viktor Sjoberg, Bert Allard, Mattias Backstrom
Summary: The study demonstrated the potential long-term impact of black shale waste deposits on the surrounding environment, mainly due to the influence of metal elements from shale waste on groundwater quality, including pH and redox conditions.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Kristina Ahlgren, Viktor Sjoberg, Mattias Backstrom
Proceedings Paper
Mining & Mineral Processing
Linnea Fahlqvist, Lotta Sartz, Mattias Backstrom
INTERNATIONAL MINE WATER ASSOCIATION SYMPOSIUM (2012: BUNBURY, WESTERN AUSTRALIA) PROCEEDINGS, SUPPL.
(2012)