Effects of elemental sulphur on heavy metal uptake by plants growing on municipal sewage sludge

Dede, Gülgün; Özdemir, Saim

doi:10.1016/j.jenvman.2015.10.015

Cited by 43 publications

(14 citation statements)

References 35 publications

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“…The 25 mmol EDTA treatment exhibited the highest accumulation of both Pb (211.3 ± 12.0 mg/kg) and Cd (191.8 ± 1.9 mg/kg) in the shoots. Between roots and shoots, the accumulation of both Cd and Pb were comparatively greater in the shoots than the roots for 10 mmol Table 6 Metal accumulation of cadmium (Cd) and lead (Pb) in its biological concentration factor (BCF), biological accumulation coefficient (BAC), translocation factor (TF) and metal uptake efficacy (%) of Vetiver grasses as influenced by different treatments of soil amendments Mean ± standard deviations followed by the same letters are not significantly different for each treatment means at 0.05 levels of probability well as Dede and Ozdemir (2016) which used other types of plant species. Despite the lower Pb accumulation in the elemental S treatments, appreciably higher BAC, TF and metal efficacy for Cd accumulation than the control were detected.…”

Section: Resultsmentioning

confidence: 99%

Effects of Different Soil Amendments on Mixed Heavy Metals Contamination in Vetiver Grass

Boyce

Rahman

et al. 2016

Bull Environ Contam Toxicol

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Three different types of low cost soil amendments, namely, EDTA, elemental S and N-fertilizer, were investigated with Vetiver grass, Vetiveria zizanioides (Linn.) Nash growing under highly mixed Cd-Pb contamination conditions. A significant increase (p < 0.05) in Cd and Pb accumulation were recorded in the shoots of all EDTA and N-fertilizer assisted treatments. The accumulation of Cd in 25 mmol EDTA/kg soil and 300 mmol N/kg soil showed relatively higher translocation factor (1.72 and 2.15) and percentage metal efficacy (63.25 % and 68.22 %), respectively, compared to other treatments. However, it was observed that the increased application of elemental S may inhibit the availability of Pb translocation from soil-to-root and root-to-shoot. The study suggests that viable application of 25 mmol EDTA/kg, 300 mmol N/kg and 20 mmol S/kg soil have the potential to be used for soil amendment with Vetiver grass growing under contaminated mixed Cd-Pb soil conditions.

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Section: Resultsmentioning

confidence: 99%

Effects of Different Soil Amendments on Mixed Heavy Metals Contamination in Vetiver Grass

Boyce

Rahman

et al. 2016

Bull Environ Contam Toxicol

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“…However, the increase was significant only for shoot biomass for the ZnSO4 treatment ( Figure 1B), where it could also be explained as a sulfur-promoted increase in growth. [50][51] The potential for R. leguminosarum and P. brassicacearum to enhance growth in inoculated B. juncea plants may be attributed to reported PGPB properties beneficial for plant growth, 27,52 including solubilization of phosphate and the production of indole acetic acid (IAA), ACC deaminase, and siderophores. [53][54][55] However, these PGPB properties were not examined in this study.…”

Section: Growth Parameters Under Different Zn Species and Bacterial Tmentioning

confidence: 99%

Soil Bacteria Override Speciation Effects on Zinc Phytotoxicity in Zinc-Contaminated Soils

Adele

Ngwenya

Heal

et al. 2018

Environ. Sci. Technol.

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The effects of zinc (Zn) speciation on plant growth in Zn-contaminated soil in the presence of bacteria are unknown but are critical to our understanding of metal biodynamics in the rhizosphere where bacteria are abundant. A 6-week pot experiment investigated the effects of two plant growth promoting bacteria (PGPB), Rhizobium leguminosarum and Pseudomonas brassicacearum, on Zn accumulation and speciation in Brassica juncea grown in soil amended with 600 mg kg elemental Zn as three Zn species: soluble ZnSO and nanoparticles of ZnO and ZnS. Measures of plant growth were higher across all Zn treatments inoculated with PGPB compared to uninoculated controls, but Zn species effects were not significant. Transmission electron microscopy identified dense particles in the epidermis and intracellular spaces in roots, suggesting Zn uptake in both dissolved and particulate forms. X-ray absorption near-edge structure (XANES) analysis of roots revealed differences in Zn speciation between treatments. Uninoculated plants exposed to ZnSO contained Zn predominantly in the form of Zn phytate (35%) and Zn polygalacturonate (30%), whereas Zn cysteine (57%) and Zn polygalacturonate (37%) dominated in roots exposed to ZnO nanoparticles. Inoculation with PGPB increased (>50%) the proportion of Zn cysteine under all Zn treatments, suggesting Zn coordination with cysteine as the predominant mechanism of Zn toxicity reduction by PGPB. Using this approach, we show, for the first time, that although speciation is important, the presence of rhizospheric bacteria completely overrides speciation effects such that most of the Zn in plant tissue exists as complexes other than the original form.

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“…With the economic development and increasing attention paid to environmental protection by the government in China, sludge production will continue to increase rapidly [4,5], and addressing large quantities of sludge in a scientific and economical manner is crucial for the protection of the ecological environment. Because sludge is rich in nutrients that are beneficial to plant growth, the agricultural utilization of sludge has become an important disposal practice as a result of economic and environmental pressures and resource considerations [6,7]. The prevailing final sludge disposal technology in EU-15 is recycling through agriculture application (44%) [8].…”

Section: Introductionmentioning

confidence: 99%

Chemical speciation and phytoavailability of Cr, Ni, Zn and Cu in loess amended with attapulgite-stabilized sewage sludge

Dai

Ren

Tao

et al. 2019

Environmental Pollutants and Bioavailability

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The mobility and phytotoxicity of heavy metals in the sludge produced by municipal wastewater treatment plants are key environmental factors limiting the agricultural application of sludge. To reduce the mobility and phytoavailability of Cr, Ni, Zn and Cu, the effect of attapulgite as a stabilizer on metal stabilization in sludge was investigated. Loess soil amended with attapulgite-stabilized sludge was used to grow corn under greenhouse conditions. Attapulgite was most suitable for the stabilization of these metals because it reduced the mobile fraction while increasing the contents of the residual fractions. Meanwhile, attapulgite amendment significantly reduced the DTPA-extractable Cr, Ni and Zn concentrations in the sludge and the accumulation of heavy metals in corn, which increased the dry biomass of corn. The amounts of acid-soluble, reducible and oxidizable fractions in rhizosphere soils were significantly positively correlated with the heavy metal contents in corn, in contrast to the residual metals.

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Effects of elemental sulphur on heavy metal uptake by plants growing on municipal sewage sludge

Cited by 43 publications

References 35 publications

Effects of Different Soil Amendments on Mixed Heavy Metals Contamination in Vetiver Grass

Effects of Different Soil Amendments on Mixed Heavy Metals Contamination in Vetiver Grass

Soil Bacteria Override Speciation Effects on Zinc Phytotoxicity in Zinc-Contaminated Soils

Chemical speciation and phytoavailability of Cr, Ni, Zn and Cu in loess amended with attapulgite-stabilized sewage sludge

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