Effects of environmental governance in mining areas: The trend of arsenic concentration in the environmental media of a typical mining area in 25 years

Zhao, Chen; Yang, Jun; Zheng, Yuqi; Yang, Jin‐yan; Guo, Guijie; Wang, Jingyun; Chen, Tongbin

doi:10.1016/j.chemosphere.2019.07.010

Cited by 30 publications

(6 citation statements)

References 39 publications

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“…Combined with the results of the PMF model analysis, it can be seen that the long-term accumulation of Cd, Pb and As in the soil should be taken seriously because of the industrial waste discharged by the mining industry, with contribution rates of 87.7, 88.5 and 62.5%, respectively. This result is consistent with those from related studies [10,[46][47][48]. Similarly, fertilizer usage and agrotype were the most significant factors affecting Hg and Cr, with contribution rates of 66 and 90.7%, respectively.…”

Section: Qualitative Identification Of Pollution Sourcessupporting

confidence: 92%

Identification of Soil Heavy Metal Sources in a Large-Scale Area Affected by Industry

Shi

Yang

et al. 2021

Sustainability

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Heavy metals (HMs) in soil are some of the most serious pollutants due to their toxicity and nonbiodegradability. Especially across large-scale areas affected by industry, the complexity of pollution sources has attracted extensive attention. In this study, an approach based on zoning to analyze the sources of heavy metals in soil was proposed. Qualitative identification of pollution sources and quantification of their contributions to heavy metals in soil are key approaches in the prevention and control of heavy metal pollution. The concentrations of five HMs (Cd, Hg, As, Pb and Cr) in the surface soil of the Chenzhou industrial impact area were the research objects. Multiple methods were used for source identification, including positive matrix factorization (PMF) analysis combined with multiple other analyses, including random forest modeling, the geo-accumulation index method and hot spot analysis. The results showed that the average concentrations of the five heavy metals were 9.46, 2.36, 2.22, 3.27 and 1.05 times the background values in Hunan soil, respectively. Cd was associated with moderately to strongly polluted conditions, Hg, As and Pb were associated with unpolluted to moderately polluted conditions and Cr was associated with practically unpolluted conditions. The mining industry was the most significant anthropogenic factor affecting the content of Cd, Pb and As in the whole area, with contribution rates of 87.7%, 88.5% and 62.5%, respectively, and the main influence area was within 5 km from the mining site. In addition, we conducted hot spot analysis on key polluting enterprises and identified hot spots, cold spots, and areas insignificantly affected by enterprises, used this information as the basis for zoning treatment and discussed the sources of heavy metals in the three subregions. The results showed that Cd originated mainly from agricultural activities, with a contribution rate of 63.6%, in zone 3. As originated mainly from sewage irrigation, with a contribution rate of 65.0%, in zone 2, and the main influence area was within 800 m from the river. This element originated mainly from soil parent materials, with a contribution rate of 69.7%, in zone 3. Pb mainly originated from traffic emissions, with a contribution rate of 72.8%, in zone 3, and the main influence area was within 500 m from the traffic trunk line. Hg was mainly derived from soil parent materials with a contribution rate of 92.1% in zone 1, from agricultural activities with a contribution rate of 77.5% in zone 2, and from a mixture of natural and agricultural sources with a contribution rate of 74.2% in zone 3. Cr was mainly derived from the soil parent materials in the whole area, with a contribution rate of 90.7%. The study showed that in large-scale industrial influence areas, the results of heavy metal source analysis can become more accurate and detailed by incorporating regional treatment, and more reasonable suggestions can be provided for regional enterprise management and soil pollution control decision making.

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Section: Qualitative Identification Of Pollution Sourcessupporting

confidence: 92%

Identification of Soil Heavy Metal Sources in a Large-Scale Area Affected by Industry

Shi

Yang

et al. 2021

Sustainability

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“…The main continent affected is Asia with more than 120 million people exposed. Followed by America and Africa, where respectively more than 48 and 24 million inhabitants are at risk [ [7] , [8] , [9] ]. Drinking contaminated water is responsible for 80% of all illnesses and deaths in developing countries [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

Removal of arsenic from semiarid area groundwater using a biosorbent from watermelon peel waste

Letechipia¹,

Gonzalez-Trinidad²,

Júnez–Ferreira³

et al. 2023

Heliyon

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“…The capability of this method for squander remediation has been accounted for in a few investigations [24]. There have been different upgrade methods proposed and actualized to defeat the deformities of the cycle and to improve its adequacy: (1) ISSN: 0369-8963 infusion of upgrading specialists, for example, acidic corrosive or utilization of a hydroxyl particle particular layer in the cathode supply to forestall precipitation or solubilize accelerates of cationic metal impurities close to the cathode [25][26][27] (2) molding of the anode and/or the cathode repositories to control the pH and zeta potential, upgrade desorption, and increment the electroosmotic stream rate to build portability of foreign substances [28][29][30]; and (3) expansion or blending of emphatically complexing specialists, for example, smelling salts, citrate, and EDTA into soil, which rival soil for metal toxins to frame solvent edifices [31][32][33].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Electrokinetic Remediation of Arsenic-Contaminated Two Different Soils (Alluvial And Red Clay Soil) from Tamilnadu

2022

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The capability of electrokinetic (EK) remediation innovation has been effectively exhibited for the remediation of heavy metal-contaminated fine-grained soils through lab scale and field application contemplates. Arsenic contamination in soil is a difficult issue influencing both site use and groundwater quality. The EK innovation was assessed for the expulsion of arsenic from two soil tests; alluvial mud soil and red mud soil taken from the Tamilnadu zone. The viability of upgrading specialists was examined utilizing three unique kinds of cathodic electrolytes; deionized water (DIW), potassium phosphate (KH2PO4) and sodium hydroxide (NaOH). The consequences of the examinations on the alluvial mud soil show that the potassium phosphate was the best in extricating arsenic, likely because of anion trade of arsenic species by phosphate.Then again, the sodium hydroxide appeared to be the most proficient in eliminating arsenic from the red soil. This outcome might be clarified by the way that the sodium hydroxide expanded the soil pH and quickened ionic relocation of arsenic species through the desorption of arsenic species just as the disintegration of arsenic-bearing minerals.

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Effects of environmental governance in mining areas: The trend of arsenic concentration in the environmental media of a typical mining area in 25 years

Cited by 30 publications

References 39 publications

Identification of Soil Heavy Metal Sources in a Large-Scale Area Affected by Industry

Identification of Soil Heavy Metal Sources in a Large-Scale Area Affected by Industry

Removal of arsenic from semiarid area groundwater using a biosorbent from watermelon peel waste

Investigation of Electrokinetic Remediation of Arsenic-Contaminated Two Different Soils (Alluvial And Red Clay Soil) from Tamilnadu

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