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Swain AA, Sharma P, Keswani C, Minkina T, Tukkaraja P, Gadhamshetty V, Kumar S, Bauddh K, Kumar N, Shukla SK, Kumar M, Dubey RS, Wong MH. The efficient applications of native flora for phytorestoration of mine tailings: a pan-global survey. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:27653-27678. [PMID: 38598151 DOI: 10.1007/s11356-024-33054-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 03/19/2024] [Indexed: 04/11/2024]
Abstract
Mine tailings are the discarded materials resulting from mining processes after minerals have been extracted. They consist of leftover mineral fragments, excavated land masses, and disrupted ecosystems. The uncontrolled handling or discharge of tailings from abandoned mine lands (AMLs) poses a threat to the surrounding environment. Numerous untreated mine tailings have been abandoned globally, necessitating immediate reclamation and restoration efforts. The limited feasibility of conventional reclamation methods, such as cost and acceptability, presents challenges in reclaiming tailings around AMLs. This study focuses on phytorestoration as a sustainable method for treating mine tailings. Phytorestoration utilizes existing native plants on the mine sites while applying advanced principles of environmental biotechnology. These approaches can remediate toxic elements and simultaneously improve soil quality. The current study provides a global overview of phytorestoration methods, emphasizing the specifics of mine tailings and the research on native plant species to enhance restoration ecosystem services.
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Affiliation(s)
- Ankit Abhilash Swain
- Department of Environmental Sciences, Central University of Jharkhand, Ranchi, 835222, India
| | - Pallavi Sharma
- School of Environment and Sustainable Development, Sector-30, Gandhinagar, 382030, Gujarat, India
| | - Chetan Keswani
- Academy of Biology and Biotechnology, Southern Federal University, Rostov-On-Don, 344090, Russia
| | - Tatiana Minkina
- Academy of Biology and Biotechnology, Southern Federal University, Rostov-On-Don, 344090, Russia
| | - Purushotham Tukkaraja
- Department of Mining Engineering and Management, South Dakota Mines, Rapid City, SD, 57701, USA
| | - Venkataramana Gadhamshetty
- Civil and Environmental Engineering Department, South Dakota School of Mines and Technology, 501 E. St. Joseph Street, Rapid City, SD, 57701, USA
- 2D-Materials for Biofilm Engineering, Science and Technology Center, 501 E. St. Joseph Street, Rapid City, SD, USA
| | - Sanjeev Kumar
- Department of Geology, BB Ambedkar University, Lucknow, 226025, India
| | - Kuldeep Bauddh
- Department of Environmental Sciences, Central University of Jharkhand, Ranchi, 835222, India.
- Institute of Environment and Sustainable Development, RGSC, Banaras Hindu University, Barkachha, Mirzapur, 231001, India.
| | - Narendra Kumar
- Department of Environmental Science, BB Ambedkar University, Lucknow, 226025, India
| | - Sushil Kumar Shukla
- Department of Environmental Sciences, Central University of Jharkhand, Ranchi, 835222, India
| | - Manoj Kumar
- Department of Environmental Sciences, Central University of Jharkhand, Ranchi, 835222, India
| | - Rama Shanker Dubey
- Central University of Gujarat, Sector-29, Gandhinagar, 382030, Gujarat, India
| | - Ming Hung Wong
- Consortium On Health, Environment, Education, and Research (CHEER), and Department of Science and Environmental Studies, The Education University of Hong Kong, Tai Po, Hong Kong, China
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The Response of Cd Chemical Fractions to Moisture Conditions and Incubation Time in Arable Land Soil. SUSTAINABILITY 2022. [DOI: 10.3390/su14106270] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Heavy metal pollution in soils is an issue of global concern, and many scholars have focused on Cadmium (Cd) because of its strong biological migration and toxicity. This study explored arable land soil, changes in external Cd contamination processes and its response to soil moisture conditions, and indoor simulation. After adding an external source of 5 mg/kg d.w., the distribution of soil Cd fractions content, EXC-Cd, CAB-Cd, FMO-Cd, OM-Cd, and RES-Cd, were continuously monitored under different water management regimes, and correlation analysis and regression equations were calculated. The results show that after external Cd entered arable land soils, the binging strength of pollutants and soil gradually increased with incubation time, and the distribution of Cd chemical forms was more stable under different water management regimes. The oversaturated water content promotes the transformation of EXC-Cd to other forms. The transformation of CAB-Cd fractions can be accelerated to other fractions by field capacity, and the active conversion period was 30–60 d. Not all Cd fractions correlated between each other, under the four water management regimes, but it seems that the reducibility of the soil environment was more conducive to external Cd fixation and stability. The response surface design method (RSM) was used to establish quantitative regimes between Cd fractions with incubation time and soil moisture, and the soil moisture content and incubation time had an obvious effect on FMO-Cd content, with R2 = 0.9542.
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Chen L, Beiyuan J, Hu W, Zhang Z, Duan C, Cui Q, Zhu X, He H, Huang X, Fang L. Phytoremediation of potentially toxic elements (PTEs) contaminated soils using alfalfa (Medicago sativa L.): A comprehensive review. CHEMOSPHERE 2022; 293:133577. [PMID: 35016965 DOI: 10.1016/j.chemosphere.2022.133577] [Citation(s) in RCA: 43] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Revised: 01/02/2022] [Accepted: 01/07/2022] [Indexed: 06/14/2023]
Abstract
Soil contamination with potentially toxic elements (PTEs) is an increasing environmental problem, posing serious threats to the living organisms. Phytoremediation is a sustainable and highly accepted technology for remediation of PTE-contaminated soils. Alfalfa has been widely adopted for the phytoremediation of PTE-contaminated soils due to its large biomass productivity, high PTE tolerance, and strong capacity to take up PTEs. However, there are still no literature reviews systematically summarized the potential of alfalfa in the phytoremediation. Therefore, we review the available literatures that present its PTE uptake, phytotoxicity, tolerance mechanisms, and aided techniques improving the phytoremediation efficiency. In this review, alfalfa shows high amounts of PTEs accumulation, especially in their root tissue. Meanwhile, the inner mechanisms of PTE tolerance and accumulation in alfalfa are discussed including: (i) the activation of antioxidant enzyme system, (ii) subcellular localization, (iii) production of glutathione, phytochelatins, and proline, and (iv) regulation of gene expression. Indeed, excessive PTE can overcome the defense system, which causes oxidative damage in alfalfa plants, thereby inhibiting growth and physiological processes and weakening the ability of PTE uptake. Till now, several approaches have been developed to improve the tolerance and/or accumulation of PTE in alfalfa plants as follows: (i) selection of PTE tolerant cultivars, (ii) applying plant growth regulators, (iii) addition of chelating agents, fertilizer, and biochar materials, and (iv) inoculation of soil microbes. Finally, we indicate that the selection of PTE-tolerant cultivars along with inoculation of soil microbes may be an efficient and eco-friendly strategy of the soil PTE phytoremediation.
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Affiliation(s)
- Li Chen
- College of Chemistry, Chemical Engineering and Environment, Minnan Normal University, Zhangzhou, 363000, China; College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, China; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation CAS and MWR, Yangling, 712100, China
| | - Jingzi Beiyuan
- School of Environment and Chemical Engineering, Foshan University, Foshan, Guangdong, China
| | - Weifang Hu
- Institute of Agricultural Resources and Environment, Guangdong Academy of Agricultural Sciences, Guangzhou, 510000, China
| | - Zhiqing Zhang
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation CAS and MWR, Yangling, 712100, China
| | - Chenjiao Duan
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation CAS and MWR, Yangling, 712100, China
| | - Qingliang Cui
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation CAS and MWR, Yangling, 712100, China
| | - Xiaozhen Zhu
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, China
| | - Haoran He
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, China
| | - Xuguang Huang
- College of Chemistry, Chemical Engineering and Environment, Minnan Normal University, Zhangzhou, 363000, China
| | - Linchuan Fang
- College of Chemistry, Chemical Engineering and Environment, Minnan Normal University, Zhangzhou, 363000, China; College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, China; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation CAS and MWR, Yangling, 712100, China; CAS Center for Excellence in Quaternary Science and Global Change, Xi'an, 710061, China.
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