The texture of metal-contaminated soil was sandy clay with 63.7% sand, 11.2% silt, and 25.1% clay, respectively. ... PW, and RC—as eco-friendly plant washing agents to remove Pb, Zn, and Cd from contaminated soil. The ... Chen J, Lu X (2013) Enhanced desorption of PCB and trace metal elements (Pb and Cu) from contaminated …
Request PDF | Spatial Distribution and Risk Assessment of As, Cd, Cu, Pb, and Zn in Topsoil at Rayong Province, Thailand | The objectives of this study were to …
The leaching efficiencies using both fresh Na 2 EDTA and regenerated Na 2 EDTA on the remediation of contaminated soils from Chenzhou lead-zinc mining area located in southern Hunan Province (southern China) were investigated. The total concentrations of Cd, Pb, Cu and Zn in both contaminated soils exceeded the maximum …
The results of latter process showed that 1-2% Pb, 16-17% Cu and 21-24% Zn was removed by surfactin after 48h, whereas the removal of Pb, Cu and Zn was increased from 40% to 47%, 30% to 36% and 16% to 18% in presence of saponin with an increase from 24 to 72h at room temperature by the soil washing process at pH 4.
The feasibility of soil washing for the removal of Pb and Cu, from soil collected from contaminated sites polluted by copper mining and industrial activities, as well as sandy loam soil spiked ...
The influence of different pH conditions and simulated inter-root environmental solutions on the release behavior of heavy metals (Cu, Pb, and Zn) from contaminated soils was investigated. The results indicate that heavy metal leaching from the soil is more likely to occur under acidic conditions and there is a risk of sustained …
Effect of the concentrations on the removal of Pb (a), Zn (b), and Cd (c) with plant washing agents from soil. CN Coriaria nepalensis, CB Clematis brevicaudata, PW Pistacia weinmannifolia, RC ...
This paper presents the first tests of Cu (7875 mg/kg), Pb (1414 mg/kg) and Zn (566 mg/kg) removal from contaminated soil with sewage-sludge–derived washing agents (SS_WAs) (dissolved organic ...
The order of selectivity of heavy metal accumulation in soils is affected by the pH of the soil. The precipitate is formed at pH values of soil solution above 4 or 5, the selectivity order obtained is Pb > Cu > Zn Cd, as observed for natural clay, illite and montmorillonite soils (Gidlow, 2015, Jusko et al., 2008).
One of the foremost issues for the current society is heavy metal pollution which is caused owing to recent extraordinary urbanization and industrialization. The impact of metal contamination on the agricultural fields/soils results in contamination of food sources and reaching the human food chain. The heavy metals (HM) and metalloids …
Ecological and geochemical studies were carried out in an area contaminated with waste from a disused Zn-Pb ore-washing plant. Between 1999 and 2019, the transformation of grassland and meadow ...
SS containing Pb-102, Zn-968, Cu-267, Cr-101, Mn-222, and Fe-8374 mg kg⁻¹ was washed in a batch process for 1 h with a recycled washing solution containing 50 mmol L⁻¹ of recycled EDTA and ...
Plants 2021, 10, 241 3 of 23 3399 m above sea level) had granular material made up of clay gravel with sand, no stabilization work was observed and there was no revegetation nor drainage (Figure1).
In the present study, we investigated the remediation of soil highly contaminated with Cu, Pb and Zn by soil washing with sewage sludge washing agents (SS_WAs) in the form of dissolved organic matter (DOM), soluble humic-like substances (HLS) and soluble humic substances (SHS), using a synthetic chelator (Na 2 EDTA) as …
Soils contaminated with Pb, Zn and Cd are hazardous. Persistent EDTA and biodegradable GLDA, EDDS and IDS have been used as chelators in the ReSoil soil washing technology, which recycles chelator and curbs toxic emissions. The washed soils supported similar growth of buckwheat (F. esculentum) and better growth of Chinese …
Prechthai et al. reported that Zn was found to be the highest constituent metal when compared to Mn, Cu, Cr, Cd, Pb, and Ni in a solid waste dumpsite in …
Fine sand (0.05–0.25 mm) had a strong adsorption capacity for Cr and Pb because of the high Mn concentration. ... found that a 10 min US pretreatment enhanced acid soil washing by about 20% and ...
The accumulation of Zn, Cu, Cd and Pb in the shoots of all nine plant species remained below the Swiss tolerance values for fodder plants (150 mg kg −1 Zn, 15–35 mg kg −1 Cu, 40 mg kg −1 Pb, and 1 mg kg −1 Cd DW), with the only exception of Pb in Chenopodium album shoots which reached a concentration of 62 mg kg −1 DW. …
The feasibility of soil washing for the removal of Pb and Cu, from soil collected from contaminated sites polluted by copper mining and industrial activities, as well as sandy loam soil spiked ...
DOI: 10.1016/j.chemosphere.2011.10.027 Corpus ID: 25555845; Metal (Cu, Cd and Zn) removal and stabilization during multiple soil washing by saponin. @article{Gusiatin2012MetalC, title={Metal (Cu, Cd and Zn) removal and stabilization during multiple soil washing by saponin.}, author={Zygmunt Mariusz Gusiatin and Ewa …
This study examined the presence and levels of nine heavy metals (Cd, Cr, Cu, Fe, Hg, Mn, Ni, Pb, and Zn) in 16 surface water samples along the Chao Phraya River, identifying Fe, Mn, Zn, and Cr as ...
In soil, some heavy metals, such as zinc (Zn) and copper (Cu), are plant micronutrients, which are needed in small quantities by plants; however, they are not necessarily found …
This paper presents the first tests of Cu (7875 mg/kg), Pb (1414 mg/kg) and Zn (566 mg/kg) removal from contaminated soil with sewage-sludge–derived washing agents (SS_WAs) (dissolved organic ...
Recently, heavy metal contaminated soil has been widespread concerned. Herein, rice straw-derived biochar-supported nanoscale zero-valent iron (nZVI@BC) composite was prepared and characterized, and its remediation performance in Cu, Zn, As, Cd, and Pb contaminated soil were evaluated. nZVI@BC demonstrated better …
PurposeSoil washing with chelators is a viable treatment alternative for remediating multi-contaminated soils. The aim of this study was to investigate the removal efficiencies of Cd, Zn, Pb, and Cu in alkaline and acid multi-metal-contaminated soils by washing with the mixed chelators (MC).Materials and methodsThe batch experiments …
These samples were collected from a MSWI fly ash co-processing cement rotary kiln plant. The leaching test and the sequential extraction procedure were adopted to measure the migration characteristic of As, Pb, Cu, and Zn. ... (As, Pb, Cu, and Zn) present in RM, FA, and CM were extracted according to Chinese standard described in following ...
and Zn) from polluted sites using different plant spe-cies. In metal contaminated soil, phytoextraction tech- ... Clay Silt Sand H 2O CaCl 2 Cd Cu Pb Zn 62.0 388 550 6.75 6.38 57.4 8.82 29.3 1724 231 DOCc [gkg −1] TOCb ... thorough washing by demineralized water. The root dis-
A total of 271 sediments samples from the Zhalong Wetland were analyzed for concentration and distribution of Hg, Cd, As, Cu, Pb, Zn, Cr, and Zn; their speciation according to the modified ...
Cao et al. confirmed the usability of HPMA and PBTCA as assistant agents during washing of soil from a waste farmland in the vicinity of a Pb–Zn mine (China) …
In the flushed soil, however, the respective MFs for Cu, Pb and Zn were 1.5–4.1-fold, 1.3–10.7-fold and 3.6–9.9-fold higher than in the washed soil 6. Elimination …
As a result, both OMs containing functional groups and pioneer plant culture were found to stimulate aggregation and the development of technosols in Cu/Pb-Zn tailings. X-ray diffraction spectra ...
The content of As, Ag, Cd, Cu, Pb, and Zn was determined in individual plant organs and correlated with soil characteristics. The degree of the pollution depended on the metal with results ranging from uncontaminated (Cd) to moderately (Zn), strongly (As, Cu), and extremely contaminated (Pb, Ag) soils.
Surfactant enhanced soil washing (SESW) was applied to an industrial contaminated soil. A preliminary characterization of the soil regarding the alkaline-earth metals, Na, K, Ca and Mg took values of 2866, 2036, 2783 and 4149 mg/kg.The heavy metals As, Cd, Cu, Pb, Ni and Zn, had values of 4019, 14, 35582, 70, 2603, and 261 …
This paper presents the first tests of Cu (7875 mg/kg), Pb (1414 mg/kg) and Zn (566 mg/kg) removal from contaminated soil with sewage-sludge–derived washing agents (SS_WAs) (dissolved organic ...