Stabilization of Metals-contaminated Farmland Soil using Limestone and Steel Refining Slag

Lim, Jung Hyun; You, Youngnam; Kamala‐Kannan, Seralathan; Oh, Sae-Gang; Oh, Byung‐Taek

doi:10.7857/jsge.2014.19.5.001

Cited by 5 publications

(2 citation statements)

References 14 publications

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“…These reactions produce emission of carbon dioxide and higher pH value of the soil to a satisfactory level [12]. By increasing the soil pH metal mobility is reduced so that limestone can be designated as a stabilization agent [13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Effects of production conditions on the properties of limestone briquettes aimed for acid soil liming

Vladimir

Dragana

Milisavljevic

et al. 2022

Hem Ind

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This paper presents the results of experiments performed to determine how the quantity of the binder (bentonite) and the parameters of the laboratory roll press affect the quality of the briquettes obtained from limestone powder. These experiments aim to examine the conditions in which limestone briquettes are formed and to determine their use for agricultural purposes. During the experiments various mass fractions of bentonite was added to limestone (from 1 to 10 %), while the force of roll press drums ranged from 2 to 25 kN. The briquettes have been tested by applying scanning electron microscopy (SEM), differential thermal and thermo-gravimetric (DTA/TG) analyses, X-ray diffraction (XRD) and Fourier-transform infrared spectroscopy (FTIR). Bentonite distribution was found to be uniform within the compact briquette structure. Formation of new compounds was not evidenced. The experiments also demonstrated that during briquetting, limestone properties remain unchanged, the changes are only physical, water solubility is not reduced, mechanical properties (impact resistance, compressive strength and abrasion resistance) are satisfactory by the transport and storage terms if the binder mass fraction is over 5% and the briquetting force exceeds 10kN and finally there is no loss due to wind dispersal during application. The only downside of the ?green? briquettes obtained is the time required for their complete disintegration if totally immersed in water.

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Section: Introductionmentioning

confidence: 99%

Effects of production conditions on the properties of limestone briquettes aimed for acid soil liming

Vladimir

Dragana

Milisavljevic

et al. 2022

Hem Ind

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“…Recently, studies have tested the release of chemicals using various percolation column tests, such as Nordest (1995), CEN (2004), NEN (2004), OECD (2004), ISO (2007), DIN (2009), and USEPA (2013) [17][18][19].These experiments replicate long-term leaching conditions. To the best of our knowledge, only one study has evaluated the release of constituents from stabilized soil using column tests [21]. However, this study used acid rain as a percolating fluid, it did not assess any long-term releases beyond 15 days, and samples were not examined for any cumulative releases as a function of the cumulative L/S ratio.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Long-Term Leaching of Arsenic from Arsenic Contaminated and Stabilized Soil Using the Percolation Column Test

2021

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Arsenic in the soil can leach into groundwater and contaminate drinking water, posing a serious risk to human health. The stabilization of arsenic in contaminated soil is one of the immobilization technologies used to remediate contaminated lands. However, few studies have evaluated the long-term release of As and pH changes in stabilized soils. We compared different stabilization techniques in the field by mixing contaminated soil with 5% of either acid mine drainage sludge (AMDS), coal mine drainage sludge (CMDS), steel slag, or cement. We evaluated the results using an up-flow percolation column test to observe any pH changes and As releases from the stabilized soils up to a liquid–solid (L/S) ratio of 50 (approximately representing a 50 year period). At the initial stage of percolation (at an L/S ratio of 0.2 or 0.2 of a year of exposure), some alkaline components and any incompletely bound As in the soils washed out with the eluent. The pH of the cement-stabilized soil was approximately 12 throughout the experiment (up to 50 L/S). Adding stabilizers to the soil reduced As leaching by 54–81% (overall efficiency) compared to the control (contaminated soil only). The order of stabilization efficiency was: steel slag (55.0%) < AMDS (74.3%) < cement (78.1%) < CMDS (81.5%). This study suggests that the groundwater of the stabilized soil should be carefully monitored for the initial five years because the soluble ionic species can leach over this period.

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Response of soil microbial communities to red mud-based stabilizer remediation of cadmium-contaminated farmland

Liu

Luo

et al. 2018

Environ Sci Pollut Res

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In this work, a field test was conducted to investigate the effects of heavy metal stabilizer addition on brown rice and microbial variables in a cadmium (Cd)-contaminated farmland from April to October in 2016. Compared with the control, red mud-based stabilizer (RMDL) effectively reduced the concentration of Cd in brown rice (with the removal rate of 48.14% in early rice, 20.24 and 47.62% in late rice). The results showed that adding 0.3 kg m RDML in early rice soil or soil for both early and late rice increased the microbial biomass carbon (MBC), the number of culturable heterotrophic bacteria and fungi, and the catalase activity in soil at different stages of paddy rice growth. Furthermore, there was no notable difference in the diversity of the bacterial species, community composition, and relative abundance at phylum (or class) or operational taxonomic unit (OTU) levels between the control and treatment (RMDL addition) groups. In a word, RMDL could be highly recommended as an effective remediation stabilizer for Cd-contaminated farmland, since its continuous application in paddy soil cultivating two seasons rice soil could effectively decrease the Cd content in brown rice and had no negative impact on soil microorganisms.

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Stabilization of Metals-contaminated Farmland Soil using Limestone and Steel Refining Slag

Cited by 5 publications

References 14 publications

Effects of production conditions on the properties of limestone briquettes aimed for acid soil liming

Effects of production conditions on the properties of limestone briquettes aimed for acid soil liming

Evaluation of Long-Term Leaching of Arsenic from Arsenic Contaminated and Stabilized Soil Using the Percolation Column Test

Response of soil microbial communities to red mud-based stabilizer remediation of cadmium-contaminated farmland

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