Feasibility of using humic substances from compost to remove heavy metals (Cd, Cu, Ni, Pb, Zn) from contaminated soil aged for different periods of time

Kulikowska, Dorota; Gusiatin, Zygmunt M.; Bułkowska, Katarzyna; Klik, Barbara

doi:10.1016/j.jhazmat.2015.08.022

Cited by 166 publications

(60 citation statements)

References 43 publications

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“…This is a significant result, as the carboxyl and hydroxyl groups of humic substances are the most likely to react with cations. Therefore, FA should have a higher capacity for interactions with metals (Tang et al, 2014;Kulikowska et al, 2015;ElBishlawi and Jaffe, 2015); the corroborating results are shown in table 4.…”

Section: Soluble-exchangeable Heavy Metals/metalloidsupporting

confidence: 62%

“…This is attributed to dissociation of functional groups such as carboxylic and phenolic. Carboxyl groups dissociate at acidic or neutral pH, whereas phenolic groups dissociate at alkaline pH (Kulikowska et al, 2015). Therefore, for this study, the responses suggest that in higher FA concentration, carboxyl groups were more responsible for metal complexation than phenolic groups, because soil pH was at 4.8 to 6.0 (Table 3).…”

Section: Soluble-exchangeable Heavy Metals/metalloidmentioning

confidence: 76%

“…In soils with higher clay and organic matter content (Table 1), metals are more tightly bound, which limits the efficiency of their removal (Kulikowska et al, 2015). Similarly, Hong et al (2002) found that a high content of organic matter in soils (7.2 and 11.3 %) makes the removal of heavy metals quite difficult due to their high adsorptive capacity.…”

Section: Soil Attributementioning

confidence: 99%

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Solubility of Heavy Metals/Metalloid on Multi-Metal Contaminated Soil Samples from a Gold Ore Processing Area: Effects of Humic Substances

Boechat

Pistóia

Lüdtke

et al. 2016

Rev. Bras. Ciênc. Solo

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Bioavailability of heavy metals at contaminated sites is largely controlled by the physicochemical properties of the environmental media such as dissolved organic matter, hydroxides and clay colloids, pH, soil cation exchange capacity and oxidation-reduction potential. The aim of this study was to investigate soil pH and heavy metal solubility effect by levels of humic and fulvic acids applied in soil samples with different levels of contamination by heavy metals. The soil samples used in this study were collected in a known metal-contaminated site. Humic acid (HA) and fulvic acid (FA) were purchased as a commercially available liquid material extracted from Leonardite. The experiment was carried out in a factorial scheme of 4 × (4 + 1), with four contaminated soil samples and four treatments, comprised of two levels of HA, two levels of FA and a control. The HA treatments increased the solubility of Cu, Zn, Ni, Cr, Cd, Pb, As and Ba from soils, while FA treatments decreased, thus raising or not their availability and mobility in soil. Humic acid concentration did not influence soil pH and FA decreased soil pH until 0.7 units. The initial heavy metal concentration in soil affects the magnitude of the processes involving humic substances. The lower releases of heavy metals by FA verified the importance of the complexation properties of organic compounds. These results appear to encourage the use of HA for increased plant-availability of heavy metals in remediation projects and the use of FA for decreased plant-availability of heavy metals at contaminated sites with a risk of introducing metals into the food chain.

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Section: Soluble-exchangeable Heavy Metals/metalloidsupporting

confidence: 62%

Section: Soluble-exchangeable Heavy Metals/metalloidmentioning

confidence: 76%

Section: Soil Attributementioning

confidence: 99%

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Solubility of Heavy Metals/Metalloid on Multi-Metal Contaminated Soil Samples from a Gold Ore Processing Area: Effects of Humic Substances

Boechat

Pistóia

Lüdtke

et al. 2016

Rev. Bras. Ciênc. Solo

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“…The humic substances would therefore be a better washing agent than the fulvic acid from Macklin. By comparison, Kulikowska et al (2015b) reported a CMC of 1101 mg C/L at pH 7 for humic substances from compost, increasing to 1215 mg C/L at pH 13.…”

Section: Resultsmentioning

confidence: 92%

“…Thus, there is an ongoing search for cost-effective and eco-friendly washing chemicals. In this regard, humic substances have the potential of becoming the washing chemicals of choice (Soleimani et al, 2010;Kulikowska et al, 2015b). Besides being environmentally benign, humic substances can improve soil physical, chemical, and biological properties.…”

Section: Introductionmentioning

confidence: 99%

Humic substances as a washing agent for Cd-contaminated soils

et al. 2017

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Mobility and Fate of Potentially Toxic Elements in Soil Environment

Duan,

Biswal,

Balasubramanian

2024

Advanced Sustainable Systems

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Soil pollution, caused by potentially toxic elements (PTEs), is a significant problem worldwide. This study has investigated the key factors that control the mobility and fate of six PTEs (Pb, Cd, Cr, Cu, Zn, and Ni) which are frequently detected in contaminated soils. The findings of this study demonstrate that smaller particles present in soil show stronger adsorption capacity compared to larger particles because of the higher specific surface area. Moreover, soil with higher organic matter content (e.g., humic acid) exhibits stronger adsorption capacity due to the presence of abundant functional groups namely hydroxyl (─OH) and carboxyl (─COOH). Notably, these functional groups possess high affinity for Pb adsorption, followed by Cd > Cu > Cr > Zn > Ni. The adsorption of most of the PTEs by soil with and without humic acid is better described by the Langmuir isotherm model and pseudo‐second‐order kinetic model. Overall, the experimental results illustrate that soil with high contents of humic acid can restrict the mobility of PTEs. This mechanistic evaluation predicts how soils with different organic matter contents respond to PTEs pollution. This study outcome will be helpful in developing sustainable remediation strategies to tackle pollution caused by PTEs in the soil environment.

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Feasibility of using humic substances from compost to remove heavy metals (Cd, Cu, Ni, Pb, Zn) from contaminated soil aged for different periods of time

Cited by 166 publications

References 43 publications

Solubility of Heavy Metals/Metalloid on Multi-Metal Contaminated Soil Samples from a Gold Ore Processing Area: Effects of Humic Substances

Solubility of Heavy Metals/Metalloid on Multi-Metal Contaminated Soil Samples from a Gold Ore Processing Area: Effects of Humic Substances

Humic substances as a washing agent for Cd-contaminated soils

Mobility and Fate of Potentially Toxic Elements in Soil Environment

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