Vertical profile of soil/sediment pollution and microbial community change by e-waste recycling operation

Wu, Qihang; Du, Yongming; Huang, Zhuying; Gu, Ji‐Dong; Leung, Jonathan Y.S.; Mai, Bi-Xian; Xiao, Tangfu; Liu, Wen; Fu, Jie

doi:10.1016/j.scitotenv.2019.03.178

Cited by 43 publications

(16 citation statements)

References 52 publications

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“…Concentrations of Cd, Cu, Pb, Sb, and Zn in the soils in this study were 1-3 orders of magnitude lower than those from the IR-sites [28,59]. Wu et al [60] reported mean concentrations of As and Ni in an e-waste burning site in Guiyu, which were 2.52 and 6.58 times higher than our results, respectively. However, Mn concentrations in soils found in this study were comparable to those from the e-waste recycling areas (Figure 2a).…”

Section: Contamination Of Heavy Metalscontrasting

confidence: 80%

“…The following are available online, Sample preparation, Instrumental Analysis, Geoaccumulation index, Table S1: Exposure factors and values used in the non-carcinogenic risk estimation, Table S2: Reference dose of different exposure routes and skin absorption factors, Table S3: Polybrominated diphenyl ether concentrations in soils from the regulated e-waste recycling area and from other areas, Table S4: Polybrominated diphenyl ether concentrations in sediments from the regulated e-waste recycling area and from other areas, Table S5: Polybrominated diphenyl ether concentrations in vegetables from the regulated e-waste recycling area and from other areas, Table S6, Mean metal concentrations in soils from the regulated e-waste recycling area and from other areas, Table S7: Mean metal concentrations in sediments from the regulated e-waste recycling area and from other areas, Table S8: Mean metal concentrations in vegetables from the regulated e-waste recycling area and from other area, Table S9: Non-carcinogenic risks for individual polybrominated diphenyl ethers in soils, Figure S1: Map of the soil, sediment, vegetable sampling sites, Figure S2: Box plots of the geoaccumulation index for heavy metals in soils and sediments. References [28,[36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52][53]56,[58][59][60][61][62][63][64]…”

Section: Supplementary Materialsmentioning

confidence: 99%

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Polybrominated Diphenyl Ethers and Heavy Metals in a Regulated E-Waste Recycling Site, Eastern China: Implications for Risk Management

Yin

Liu³

et al. 2021

Molecules

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Serious pollution of multiple chemicals in irregulated e-waste recycling sites (IR-sites) were extensively investigated. However, little is known about the pollution in regulated sites. This study investigated the occurrence of 21 polybrominated diphenyl ethers (PBDEs) and 10 metals in a regulated site, in Eastern China. The concentrations of PBDEs and Cd, Cu, Pb, Sb, and Zn in soils and sediments were 1–4 and 1–3 orders of magnitude lower than those reported in the IR-sites, respectively. However, these were generally comparable to those in the urban and industrial areas. In general, a moderate pollution of PBDEs and metals was present in the vegetables in this area. A health risk assessment model was used to calculate human exposure to metals in soils. The summed non-carcinogenic risks of metals and PBDEs in the investigated soils were 1.59–3.27 and 0.25–0.51 for children and adults, respectively. Arsenic contributed to 47% of the total risks and As risks in 71.4% of the total soil samples exceeded the acceptable level. These results suggested that the pollution from e-waste recycling could be substantially decreased by the regulated activities, relative to poorly controlled operations, but arsenic pollution from the regulated cycling should be further controlled.

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Section: Contamination Of Heavy Metalscontrasting

confidence: 80%

Section: Supplementary Materialsmentioning

confidence: 99%

Polybrominated Diphenyl Ethers and Heavy Metals in a Regulated E-Waste Recycling Site, Eastern China: Implications for Risk Management

Yin

Liu³

et al. 2021

Molecules

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“…For pH measurement, the soil samples were air-dried for at least 2 days and mixed with water (1:3, w/v). TC and TN were measured using elemental analysis system (Elemnetar Vario Max CN) 34 . For Amo-N and NO 2 − -N measurement, 5 g soil samples were mixed with 1 M KCl (1:3, w/v), vortexed thoroughly by shaker and then were measured using Thermo Scientific Aquakem 600 35 .…”

Section: Physical and Chemical Characterization Of Samplesmentioning

confidence: 99%

“…For Amo-N and NO 2 − -N measurement, 5 g soil samples were mixed with 1 M KCl (1:3, w/v), vortexed thoroughly by shaker and then were measured using Thermo Scientific Aquakem 600 35 . The concentrations of metals including Fe, Cu, Cd, Ni, Mn, Mo, Cr, and Pb and the concentration of P were measured using inductively coupled plasma optical emission spectrometry (Optima 5300DV, PerkinElmer, USA) after crushing and sieving the soil samples using a 0.074 mm sieve 34 . The surface morphology of the metal coupons after 5 and 10 months was characterized using an ultra-deep digital microscope (KEYENCE, China), and the crystalline phases of the corrosion products scraped from the metal surface were analyzed using XRD analysis.…”

Section: Physical and Chemical Characterization Of Samplesmentioning

confidence: 99%

Responses of soil microbiome to steel corrosion

Huang

et al. 2021

npj Biofilms Microbiomes

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The process of microbiologically influenced corrosion (MIC) in soils has received widespread attention. Herein, long-term outdoor soil burial experiments were conducted to elucidate the community composition and functional interaction of soil microorganisms associated with metal corrosion. The results indicated that iron-oxidizing (e.g., Gallionella), nitrifying (e.g., Nitrospira), and denitrifying (e.g., Hydrogenophaga) microorganisms were significantly enriched in response to metal corrosion and were positively correlated with the metal mass loss. Corrosion process may promote the preferential growth of the abundant microbes. The functional annotation revealed that the metabolic processes of nitrogen cycling and electron transfer pathways were strengthened, and also that the corrosion of metals in soil was closely associated with the biogeochemical cycling of iron and nitrogen elements and extracellular electron transfer. Niche disturbance of microbial communities induced by the buried metals facilitated the synergetic effect of the major MIC participants. The co-occurrence network analysis suggested possible niche correlations among corrosion related bioindicators.

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“…The contaminated soils treated in the present study were sampled from an e-waste disassembling and recycling town located in southern China. A large area of soils in the town has been polluted by disassembling activities owing to primitive dismantling methods [3]. Environmentally harmful businesses have deleterious effects on the health of the local inhabitants, especially infants and children.…”

Section: Introductionmentioning

confidence: 99%

Alterations of Amino Acid Concentrations and Photosynthetic Indices in Light Irradiated Arabidopsis thaliana during Phytoextraction

et al. 2021

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Hyperaccumulation of heavy metals is substantial in some hyperaccumulators; however, few studies have been conducted to reveal the effect of light irradiation on the variations of representative amino acids and photosynthetic indices, which can represent the antioxidant capacity of plants during phytoremediation. The physiochemical responses of Arabidopsis thaliana to Cd stress were compared during six light irradiation treatments. The results of the experiment showed that the stress adaptation of A. thaliana was enhanced in all light irradiation treatments, except for monochromatic blue-light irradiation. The concentrations of glutamic acid and glutamine decreased significantly in pure blue light compared with the other treatments. The decrease in the concentrations of these two amino acids might be induced by an intensive biosynthesis of defensive factors, as manifested in the declined photosynthetic indices. Concentrations of aspartic acid and asparagine involved in the ammonification, absorption, and transportation of nitrogen in vascular plants increased in the red and blue combined irradiation treatments compared with the control, corresponding to the improved photosynthetic capacity of the species. The concentration of proline, which can represent environmental stresses including metal toxicity and excessive light energy, generally increased with an increasing ratio of blue light. This study proposes the key roles of amino acids and photosynthetic indices in light-motivated Cd pollution responses in A. thaliana.

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Vertical profile of soil/sediment pollution and microbial community change by e-waste recycling operation

Cited by 43 publications

References 52 publications

Polybrominated Diphenyl Ethers and Heavy Metals in a Regulated E-Waste Recycling Site, Eastern China: Implications for Risk Management

Polybrominated Diphenyl Ethers and Heavy Metals in a Regulated E-Waste Recycling Site, Eastern China: Implications for Risk Management

Responses of soil microbiome to steel corrosion

Alterations of Amino Acid Concentrations and Photosynthetic Indices in Light Irradiated Arabidopsis thaliana during Phytoextraction

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