Evaluation of phosphate fertilizers and red mud in reducing plant availability of Cd, Pb, and Zn in mine tailings

Ahn, Jaehun; Kang, Sin-Hyun; Hwang, Kyung-Yup; Kim, Hong-Seok; Kim, Jae-Gon; Song, Hocheol; Hwang, Inseong

doi:10.1007/s12665-015-4286-x

Cited by 33 publications

(7 citation statements)

References 31 publications

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“…However, while the results indicate that biochar may be able to stabilize metals in contaminated sediments under certain conditions as clear decreases in C p and C DGT and clear increases in F3 and F4 in this study, it is clear that biochar is not as effective as phosphate or iron-bearing materials, the removals and transformations reported in other related studies are much higher than those reported in this and other biochar-related studies (Zhang et al, 2017;Igalavithana et al, 2017;Lu et al, 2017). For example, when phosphate compounds were added to contaminated soils, the concentrations of extractable heavy metals decreased by more than 90% (Ahn et al, 2015;Sima et al, 2015), while the oxidizable and residual phases of Pb and Cu increased by between 70%…”

Section: Possible Mechanisms Of Stabilization Induced By Biocharcontrasting

confidence: 44%

Assessing the capacity of biochar to stabilize copper and lead in contaminated sediments using chemical and extraction methods

Wang

Ren

Wang

et al. 2019

Journal of Environmental Sciences

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Section: Possible Mechanisms Of Stabilization Induced By Biocharcontrasting

confidence: 44%

Assessing the capacity of biochar to stabilize copper and lead in contaminated sediments using chemical and extraction methods

Wang

Ren

Wang

et al. 2019

Journal of Environmental Sciences

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“…In soil contaminated by deposition from a Pb/Zn smelter, red mud additions of 5% and 10% resulted in significantly lower acetic acid extractable (exchangeable) Pb and higher % residual Pb compared to unamended soil after 12 months incubation [100]. Similarly, in a 28-day laboratory study in which 20% w/w red mud was incubated with mine tailings, mobile Cd, Pb and Zn fractions in soils amended by red mud were converted to the less mobile Fe/Mn oxides fraction along with slight conversion to the residual fraction, due to formation of surface complexes with Fe/Al (hydr)oxides [48]. These findings have been replicated in a longer-term study involving 1% addition of red mud to field plots near a former Pb smelter [80].…”

Section: Effect Of Red Mud Addition On Metal and Metalloid "Speciation"mentioning

confidence: 94%

“…In recent years red mud has been added to contaminated soils, mainly resulting from mining activities, to neutralise low pH and reduce metal mobility through different physicochemical mechanisms [44,47]. These include immobilisation of metals through adsorption and surface complexation with Fe oxides and formation of inner sphere complexes with Fe and Al oxides and hydroxides [47,48].…”

Section: Introductionmentioning

confidence: 99%

The use of red mud as an immobiliser for metal/metalloid-contaminated soil: A review

Yue

Heal

Friesl-Hanl

2017

Journal of Hazardous Materials

216

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This review focuses on the applicability of red mud as an amendment for metal/metalloid-contaminated soil. The varying properties of red muds from different sources are presented as they influence the potentially toxic element (PTE) concentration in amended soil. Experiments conducted worldwide from the laboratory to the field scale are screened and the influencing parameters and processes in soils are highlighted. Overall red mud amendment is likely to contribute to lowering the PTE availability in contaminated soil. This is attributed to the high pH, Fe and Al oxide/oxyhydroxide content of red mud, especially hematite, boehmite, gibbsite and cancrinite phases involved in immobilising metals/metalloids. In most cases red mud amendment resulted in a lowering of metal concentrations in plants. Bacterial activity was intensified in red mud-amended contaminated soil, suggesting the toxicity from PTEs was reduced by red mud, as well as indirect effects due to changes in soil properties. Besides positive effects of red mud amendment, negative effects may also appear (e.g. increased mobility of As, Cu) which require site-specific risk assessments. Red mud remediation of metal/metalloid contaminated sites has the potential benefit of reducing red mud storage and associated problems.

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“…In our study, alkaline amendments (A and B) composed of CaO had significant positive effects on the decrease of soil Acd, which can be probably due to pH value. A large number of studies (68, 69) have shown that soil pH is a very important factor affecting available heavy metal concentration, controlling the adsorption-desorption of heavy metals in soil and the chemical behaviors such as dissolution-deposition. And alkaline amendments also had a favorable impact on taxonomic and functional patterns, especially on microbial diversity, soil nitrogen fixation and the growth of related bacteria, which conducive to the decrease of soil Acd.…”

Section: Discussionmentioning

confidence: 99%

The Impact of Remediation Through Stabilizing Amendments on Taxonomic and Metabolic Patterns of Bacteria and Archaea in Cadmium-Contaminated Paddy Fields in Southwestern China

Chen

Pan

Jiang

et al. 2018

Preprint

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42. during the period of irrigation, but be in an oxidation state when fields were in draining 43 and drying periods. The periodical alternation of wetting and drying forms unique 44 physical, chemical, and biological properties, and it is vital to understanding the 45 taxonomic and functional dynamics of microbiomes in amended soils in order to improve 46 the process performance. 47 Introduction 50Cadmium is characterized by its toxicity, accumulation, and mobility in the environment, 51 and can result in potential hazards for human health through the soil-food chain transfer 52 (1). In recent years, with the increases in atmospheric deposition and human activities, 53 such as mining, the application of organic and inorganic fertilizers or sewage sludge, and 54 wastewater irrigation, heavy metal pollution in soil has increased dramatically (2,3,4). In 55China, heavy metal pollution in soil is decreasing the country's grain harvest by tens of 56 millions of tons every year (5, 6). Another study showed that more than 70% of the rice 57 grain samples from metal-contaminated rice fields across south China were 58 Cd-contaminated (7). The multi-target regional geochemical survey of Chengdu 59 economic zone revealed that the abundance of heavy metals, especially cadmium, was 60 abnormal over large areas of Deyang (northeast of the Chengdu Plain). Besides, the 61 results of the ecological geochemical assessment conducted in this region showed that 62 the source of heavy metals pollution of soil, such as cadmium pollution, is the LongmenMountains, which accumulates the mineral cadmium and near-surface atmospheric dust 64 produced by industrial and mining enterprises. Heavy metal pollution has been a severe 65 challenge to the sustainable utilization of cultivated land resource and food production 66 safety. Therefore, environmental engineers have given high priority to the reduction of of 67 toxic metal bioavailability in croplands to ensure food security and human health (8). 68 At present, the techniques of soil heavy metal pollution remediation are divided into 69 four parts: phytoremediation, micro-remediation, physical remediation, and chemical 70 remediation. The new-soil technology, adsorption, and electrokinetics (EK) belong to the 71 physical remediation group, while leaching, biological reduction, complexation, and 72 in-situ immobilization (9) are all part of the chemical remediation group. Of these 73 remediation technologies, in-situ immobilization is considered to be the most effective 74 and low-cost remediation, especially for non-point source pollution in cultivated soil (10). 75The key to the technology is to select suitable amendments, of which the most commonly 76 used ones are alkaline materials, phosphorous materials, clay minerals, iron manganese 77 oxides and organic materials (11). These materials can change the existing forms of 78 heavy metal in soil through ion exchange, adsorption, and precipitation, and reduce the 79 mobility and bioavailability of heavy metals. The environmental effect ...

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Evaluation of phosphate fertilizers and red mud in reducing plant availability of Cd, Pb, and Zn in mine tailings

Cited by 33 publications

References 31 publications

Assessing the capacity of biochar to stabilize copper and lead in contaminated sediments using chemical and extraction methods

Assessing the capacity of biochar to stabilize copper and lead in contaminated sediments using chemical and extraction methods

The use of red mud as an immobiliser for metal/metalloid-contaminated soil: A review

The Impact of Remediation Through Stabilizing Amendments on Taxonomic and Metabolic Patterns of Bacteria and Archaea in Cadmium-Contaminated Paddy Fields in Southwestern China

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