TY - JOUR
T1 - Potentially toxic elements in solid waste streams
T2 - Fate and management approaches
AU - Xiong, X.
AU - Liu, Xueming
AU - Yu, Iris K.M.
AU - Wang, Lei
AU - Zhou, Jin
AU - Sun, Xin
AU - Rinklebe, Jörg
AU - Shaheen, Sabry M.
AU - Ok, Yong Sik
AU - Lin, Z.
AU - Tsang, Daniel C.W.
N1 - Funding Information:
The authors appreciate the financial support from the Hong Kong Research Grants Council (E-PolyU503/17 and PolyU 15223517) for this review study.
Funding Information:
The authors appreciate the financial support from the Hong Kong Research Grants Council ( E-PolyU503/17 and PolyU 15223517 ) for this review study.
Publisher Copyright:
© 2019 Elsevier Ltd
PY - 2019/10
Y1 - 2019/10
N2 - Solid wastes containing potentially toxic elements (PTEs) are widely generated around the globe. Critical concerns have been raised over their impacts on human health and the environment, especially for the exposure to PTEs during the transfer and disposal of the wastes. It is important to devise highly-efficient and cost-effective treatment technologies for the removal or immobilisation of PTEs in solid wastes. However, there is an inadequate overview of the global flow of PTEs-contaminated solid wastes in terms of geographical distribution patterns, which is vital information for decision making in sustainable waste management. Moreover, in view of the scarcity of resources and the call for a circular economy, there is a pressing need to recover materials (e.g., precious metals and rare earth elements) from waste streams and this is a more sustainable and environmentally friendly practice compared with ore mining. Therefore, this article aims to give a thorough overview to the global flow of PTEs and the recovery of waste materials. This review first summarises PTEs content in various types of solid wastes; then, toxic metal(loid)s, radioactive elements, and rare earth elements are critically reviewed, with respect to their patterns of transport transformation and risks in the changing environment. Different treatments for the management of these contaminated solid wastes are discussed. Based on an improved understanding of the dynamics of metal(loid) fates and a review of existing management options, new scientific insights are provided for future research in the development of high-performance and sustainable treatment technologies for PTEs in solid wastes.
AB - Solid wastes containing potentially toxic elements (PTEs) are widely generated around the globe. Critical concerns have been raised over their impacts on human health and the environment, especially for the exposure to PTEs during the transfer and disposal of the wastes. It is important to devise highly-efficient and cost-effective treatment technologies for the removal or immobilisation of PTEs in solid wastes. However, there is an inadequate overview of the global flow of PTEs-contaminated solid wastes in terms of geographical distribution patterns, which is vital information for decision making in sustainable waste management. Moreover, in view of the scarcity of resources and the call for a circular economy, there is a pressing need to recover materials (e.g., precious metals and rare earth elements) from waste streams and this is a more sustainable and environmentally friendly practice compared with ore mining. Therefore, this article aims to give a thorough overview to the global flow of PTEs and the recovery of waste materials. This review first summarises PTEs content in various types of solid wastes; then, toxic metal(loid)s, radioactive elements, and rare earth elements are critically reviewed, with respect to their patterns of transport transformation and risks in the changing environment. Different treatments for the management of these contaminated solid wastes are discussed. Based on an improved understanding of the dynamics of metal(loid) fates and a review of existing management options, new scientific insights are provided for future research in the development of high-performance and sustainable treatment technologies for PTEs in solid wastes.
KW - Environmental and human health risk
KW - Green and sustainable remediation
KW - Metals/metalloids
KW - Radioactive elements
KW - Rare earth elements
KW - Sustainable waste management
UR - http://www.scopus.com/inward/record.url?scp=85069609302&partnerID=8YFLogxK
U2 - 10.1016/j.envpol.2019.07.012
DO - 10.1016/j.envpol.2019.07.012
M3 - Review article
C2 - 31330359
AN - SCOPUS:85069609302
SN - 0269-7491
VL - 253
SP - 680
EP - 707
JO - Environmental Pollution
JF - Environmental Pollution
ER -