Influence of thermal treatment on fixation rate and leaching behavior of heavy metals in soils from a typical e-waste processing site

Wang, Xiaoliang; Wang, Minghui; Quan, Sheng-Xiang; Yan, Bo; Xiao, Xianming

doi:10.1016/j.jece.2015.11.006

Cited by 16 publications

(6 citation statements)

References 36 publications

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“…The two major sources of HMs in the soil area are natural pedo-geochemical background and anthropogenic contamination occurred via composting, sewage sludge, aerosol deposition and waste animal manure ( Abdolhossien et al., 2012 ). Soil is a substantive component of the biosphere and forms the major sink for metals released into the environment from a wide variety of anthropogenic activities such as transport, agricultural practices, municipal refuse, industrial activities and disposal of wastes ( Wang et al., 2016 ; Enunekua et al., 2017 ; Jiang et al., 2018 ). Composition of soil reflects the distribution and the intensity of trace elements in the soil.…”

Section: Introductionmentioning

confidence: 99%

Assessment of physiochemical properties and concentration of heavy metals in agricultural soils fertilized with chemical fertilizers

Salem

Bedade

Al-ethawi³

et al. 2020

Heliyon

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The present study aim to assess the effect of phosphate and urea fertilizers on the physicochemical properties, pH and electrical conductivity (EC) of the soil. The effect of these fertilizers on cation exchange capacity (CEC), organic matter (OM), and the possibility of contamination with heavy metals (HM) (Cr, Cu, Cd, Mn, Zn, Ni, Fe, and Pb) were studied on the soils of Alshati agricultural project at different seasons after forty years of fertilization. Uncultivated soil samples were also analyzed for comparison and considered as reference. Mean values of soil pH, EC, CEC, and OM ranged between 6.88-7.32, 0.14–0.26 μS/cm, 2.95–4.19 Cmol/kg and 0.49–0.53%, respectively, in all seasons. Concentrations of HMs were 9.50–38.38, 0.0–2.05, 0.0–0.47, 0.0–29.81, 0.0–13.85, 2.83–25.95 and 104–512.20 mg/kg respectively, for Cr, Cu, Cd, Mn, Zn, Ni and Fe. The concentrations of the HMs in the soil were found to be vary significantly with the seasons (winter, spring, summer, and autumn). However, no traces of Pb was found in the soil samples. The result showed a significant correlation between, pH, EC, CEC, OM and HM content of the soil. The geochemical index of contamination shows that there was no contamination with Cu, Cd, Zn, Pb, Cr, Mn, Ni, and Fe.

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Section: Introductionmentioning

confidence: 99%

Assessment of physiochemical properties and concentration of heavy metals in agricultural soils fertilized with chemical fertilizers

Salem

Bedade

Al-ethawi³

et al. 2020

Heliyon

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“…Although there are various technologies to remediate soil Cd contamination, it is still difficult to put them into practice in farmland due to many limited conditions such as long-term fallow, high cost, and potential risk of secondary pollution. , In recent years, proper cultivar selection has been proposed as a practical eco-friendly approach to restrict Cd uptake and accumulation in crops and finally limits the movement of Cd into the human diet . The strategy of pollution-safe cultivars (PSCs), i.e., the cultivars in which the concentration of certain pollutants in edible parts is low enough for safe consumption (≤0.2 mg kg –1 FW, according to the Codex ML of Cd), when growing in contaminated soil, has been elicited as a cost-effective way to minimize Cd accumulation in crops. , …”

Section: Introductionmentioning

confidence: 99%

Selection for Cd Pollution-Safe Cultivars of Chinese Kale (Brassica alboglabra L. H. Bailey) and Biochemical Mechanisms of the Cultivar-Dependent Cd Accumulation Involving in Cd Subcellular Distribution

Guo

Tan

et al. 2018

J. Agric. Food Chem.

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Two pot experiments were conducted to compare and verify Cd accumulation capacities of different cultivars under Cd exposures (0.215, 0.543, and 0.925 mg kg in Exp-1 and 0.143, 0.619, and 1.407 mg kg in Exp-2) and Cd subcellular distributions between low- and high-Cd cultivars. Shoot Cd concentrations between the selected low- and high-Cd cultivars were 1.4-fold different and the results were reproducible. The proportions of Cd-in-cell-wall of shoots and roots were all higher in a typical low-Cd cultivar (DX102) than in a typical high-Cd cultivar (HJK), while those of Cd-in-chloroplast or Cd-in-trophoplast and Cd-in-membrane-and-organelle were opposite. The proportions of Cd-in-vacuoles-and-cytoplasm of roots in DX102 were always higher than in HJK under Cd stresses, while there was no clear pattern in those of shoots. These findings may help to reduce health risk of Cd from Chinese kale consumption and explained biochemical mechanisms of cultivar-dependent Cd accumulation among the species.

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“…The means of Cu, Zn, Cd, and Sb compositions in CT2 were 2.4 − 6.3 times higher than the means of those metal compositions in other soil. These metals were present in high concentrations in soil contaminated by electronic wastes [26,27]. Consequently, this soil was excluded because its metal composition was affected by leachate from electronic wastes in a stockyard.…”

Section: Hierarchical Clustering Of Samplesmentioning

confidence: 99%

Estimation of 2011 Tohoku-Oki Tsunami Deposit Origins by Cluster Analysis Using Metal Composition

Suzuki

Kose

Tamaki

et al. 2018

J. of Wat. & Envir. Tech.

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A tsunami generated by The Great East Japan Earthquake inundated 3.1 − 5.4 km inland of the lowlying coastal areas of the Tohoku district, Japan, leaving sand and silt deposits over parts of the inundated areas. Applying cluster analysis to the deposits to ascertain their heavy metal compositions, we tried to estimate the tsunami deposit origin and attempted to ascertain their characteristics and distribution based on the shoreline topography and the land use of the backland. Cluster analysis results revealed that most tsunami deposits have similar metal compositions to those of marine sediments. The results suggest dominant marine sediment origin. The tsunami deposits showing soil origin of a unique location were subjected to strong tsunami waves because of the topography of surrounding areas. Moreover, a unique location around a building that disturbed the tsunami wave water currents showed soil origin. The silt contents in tsunami deposits were influenced by differences in tsunami wave water currents attributable to differences in shoreline topography. The metal compositions of tsunami deposits reflected both the mineralogical characteristics of the sediment and pollution profiles of the backland land use.

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Influence of thermal treatment on fixation rate and leaching behavior of heavy metals in soils from a typical e-waste processing site

Cited by 16 publications

References 36 publications

Assessment of physiochemical properties and concentration of heavy metals in agricultural soils fertilized with chemical fertilizers

Assessment of physiochemical properties and concentration of heavy metals in agricultural soils fertilized with chemical fertilizers

Selection for Cd Pollution-Safe Cultivars of Chinese Kale (Brassica alboglabra L. H. Bailey) and Biochemical Mechanisms of the Cultivar-Dependent Cd Accumulation Involving in Cd Subcellular Distribution

Estimation of 2011 Tohoku-Oki Tsunami Deposit Origins by Cluster Analysis Using Metal Composition

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