Article
Green & Sustainable Science & Technology
Changbin Li, Guofan Zhang, Hong Zheng, Feng Zhang, Kun Liu
Summary: This paper introduces a micro-crystallization method to process zinc leaching residue into glass-ceramics with excellent performance and high value. The glass-ceramics effectively solidify heavy metals, eliminating their high hazard, and exhibit excellent mechanical and corrosion resistance properties.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Biotechnology & Applied Microbiology
Ankit, Lala Saha, Virendra Kumar, Jaya Tiwari, Sweta, Shalu Rawat, Jiwan Singh, Kuldeep Bauddh
Summary: Electronic waste is a significant part of solid waste management worldwide, containing hazardous components that have adverse effects on plants, microbes, and human beings. Heavy metals are a major toxic component of e-waste, requiring careful handling. Inadequate disposal/treatment technologies for e-waste have direct and indirect impacts on human health and the environment.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Green & Sustainable Science & Technology
Hang Zhao, Yang Tian, Rong Wang, Rui Wang, Xiangfei Zeng, Feihua Yang, Zhaojia Wang, Mengjun Chen, Jiancheng Shu
Summary: The study revealed that municipal solid waste incineration (MSWI) fly ash in Beijing contains high concentrations of heavy metals, especially during autumn; leaching toxicity experiments showed the hazardous nature of MSWI fly ash; different seasons affect the metal mobility and toxicity of fly ash.
Review
Environmental Sciences
Marija Petrovic, Zeljka Fiket
Summary: Coal combustion is a major source of global electricity, but it also generates a significant amount of coal ash residues. This article reviews the environmental damage caused by coal ash and discusses three commonly used risk assessment methodologies: leaching assessment, groundwater assessment, and toxicity testing. It also emphasizes the need for sustainable and selective methods for recovery of critical elements from coal ash.
Article
Green & Sustainable Science & Technology
Suzielah Rahmad, Nur Izzi Md Yusoff, Syazwani Mohd Fadzil, Khairiah Haji Badri, Ahmad Kamil Arshad, Iswandaru Widyatmoko, Sri Atmaja P. Rosyidi
Summary: This study investigates the physical characteristics, thermal analysis, leaching, and toxicity of polymer-modified asphalt binder as a binding agent. The results show that the mixes remain stable at high temperatures even with the addition of warm-mix asphalt additives, and do not contribute to heavy metal pollution in surrounding water resources.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Green & Sustainable Science & Technology
Suzielah Rahmad, Nur Izzi Md Yusoff, Syazwani Mohd Fadzil, Khairiah Haji Badri, Ahmad Kamil Arshad, Iswandaru Widyatmoko, Sri Atmaja P. Rosyidi
Summary: The study investigated the physical characteristics, thermal analysis, leaching, and toxicity of polymer-modified asphalt binder (PMA, PG76), as well as its performance as a binding agent. The results showed that even though PMA was added in combination with WMA as additives, the mixes remained stable above their mixing and compaction temperatures. The spreading of water on the surface was influenced by the increasing amount of WMA, and the surface was determined to be hydrophilic or poorly hydrophobic.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Geochemistry & Geophysics
Yunpeng Du, Xiong Tong, Xian Xie, Wenjie Zhang, Hanxu Yang, Qiang Song
Summary: The recovery of zinc and silver from zinc-leaching residue using water leaching followed by flotation demonstrated efficient, economical, and environmentally friendly recycling of valuable metals from hazardous waste.
Article
Engineering, Civil
Chao-qiang Wang, Lin-xiao Cheng, Qi-cong Huang, Zhong-he Shui, Yan-yan Liu, Hui Zhao, Zhao-ji Zhang
Summary: With the acceleration of urbanization, the production of waste concrete is increasing, leading to the accumulation of heavy metals in outdoor areas. This study systematically investigates the physical properties and microstructure of outdoor natural accumulation waste concrete, analyzes the leaching mechanism and human health risks associated with heavy metals, and proposes resource utilization strategies and carbon emission reduction calculations for waste concrete recycling. The results show that heavy metals in waste concrete mainly exist in hydration products through precipitation, adsorption, and replacement, and the leaching mechanisms involve both chemical and physical processes. The concentration and leaching rate of heavy metals vary, but they do not pose significant health risks. The study provides insights for the safe and environmentally friendly utilization of waste concrete.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2023)
Review
Environmental Sciences
Lu Zhou, Shengnan Li, Fengxiang Li
Summary: The combination of antibiotics and heavy metals increases the toxicity range and has potential effects on antibiotic resistance genes (ARGs) and bacterial resistance. Elimination technologies such as adsorption, photocatalytic degradation, and microbial treatment show promise for removing combined pollution.
ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Lixia Niu, Jiayi Li, Xiangxin Luo, Tao Fu, Ou Chen, Qingshu Yang
Summary: After long-term reclamation, the Modaomen estuary of the Pearl River Delta suffered from moderate-to-high pollution status due to enriched accumulation of heavy metals like Cr, Zn, Pb, Cu, Cd, and Ni, with Cd being a major concern for ecosystem health. Receptor models quantified the sources and contributions of these heavy metals, highlighting the importance of controlling metal input and managing sediment quality in the estuary.
ENVIRONMENTAL POLLUTION
(2021)
Article
Engineering, Environmental
Dong Yang, Shiyan Yang, Honghong Yuan, Fan Wang, Hailong Wang, Jianming Xu, Xingmei Liu
Summary: The research indicates that nZVI-BC can effectively reduce the leakage of arsenic, cadmium, and lead in soil, transform unstable heavy metals into stable forms, and decrease the human health exposure risk.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Renjie Mi, Zhibin Zhang, Weiming Ji, Shichang Liu, M. F. Kai, Kui Lin, Yongshan Tan
Summary: The solidification/stabilisation behaviours of Zn2+ in magnesium potassium phosphate cement (MKPC) were investigated through experiments and density functional theory (DFT) study. The addition of Zn2+ reduced the compressive strength of MKPC by delaying the formation of MgKPO4 center dot 6H(2)O and exhibiting lower binding energy compared to Mg2+. Zn2+ existed as Zn-2(OH)PO4 in MKPC and had little influence on the structure of MgKPO4 center dot 6H(2)O.
ENVIRONMENTAL RESEARCH
(2023)
Article
Green & Sustainable Science & Technology
Yingzun He, Monika Kasina
Summary: This manuscript focuses on the sustainable utilization of municipal waste incineration ashes in construction, evaluating the mobility of heavy metals and the associated environmental contamination risk. The study highlights the importance of stringent environmental management measures for responsible utilization.
Article
Environmental Sciences
Haojie Wang, Chenxuan Ju, Min Zhou, Jiaao Chen, Xiaoqing Kan, Yiqie Dong, Haobo Hou
Summary: This study investigates the gangue minerals, toxicity, speciation, leaching characteristics, and immobilization effects of heavy metals in lead-zinc tailings under simulated acid rain conditions. The results reveal that zinc is the most easily leachable hazardous element under acid rain. Immobilization of heavy metals depends on the stability of hydrates, and 70% cured LZTHP can be used for practical engineering projects. This research provides important insights into the leached heavy metals under acidic precipitation, as well as improves the sustainability and safety of heavy metal immobilization.
ENVIRONMENTAL POLLUTION
(2022)
Article
Chemistry, Physical
Binbin Li, Songxiong Ding, Haihong Fan, Yu Ren
Summary: Experimental investigations were conducted to examine the impact of pyrolysis temperature on sewage sludge biochar (SSB). The results showed that heavy metals were enriched and confined in biochar SSB as the pyrolysis temperature increased, leading to a reduction in ecological toxicity. The pyrolysis of sewage sludge at a suitable temperature converted bioavailable/degradable heavy metals into a more stable oxidizable/residual form.
