A combined chemical and phytoremediation method for reclamation of acid mine drainage–impacted soils

RoyChowdhury, Abhishek; Sarkar, Dibyendu; Datta, Rupali

doi:10.1007/s11356-019-04785-z

Cited by 27 publications

(5 citation statements)

References 36 publications

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“…In recent years, assisted natural remediation (ANR) may be a cost-effective alternative to traditional techniques for remediation of polymetallic-contaminated soils, because it is less expensive, simple to operate, not contaminating topsoil when treating contaminants and somewhat eco-friendly. ANR technology is based on the addition of certain amendments and/or plantings to reactivate and enhance the natural attenuation mechanisms (adsorption, precipitation, complexation and redox reactions) in the soil, reducing the leachate rate, biological effectiveness and toxicity of heavy metals to plants, thereby immobilizing them in situ and affecting the microbial activity, plant development and nutrient cycling in the soil [17,18].…”

Section: Introductionmentioning

confidence: 99%

Effect of Carbide Slag Combined with Biochar on Improving Acidic Soil of Copper Sulfide Mines

et al. 2023

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Heavy metal-rich acidic soils of copper sulfide mines can easily cause harm to the surrounding environment and ecosystem safety if not treated properly. Currently, the most common method of mine ecological remediation is to improve acidic soils of copper sulfide mines by adding different types of amendments. In this paper, different dosages of biochar and carbide slag applied singly and in combination were designed to investigate the changes of physicochemical properties and ryegrass growth in the acidic soil of copper sulfide mines. Through soil incubation experiments and potting tests, different treatments explored the improvement effect of carbide slag combined with biochar on the acidic soil of copper sulfide mines. Then, it was found that 2% (w/w) carbide slag in combination with 10% (w/w) biochar had the best effect on the improvement of copper-sulfide mine acidic soil. Among them, carbide slag significantly increased the pH, cation exchange capacity (CEC) and acid neutralization capacity (ANC), and reduced the electrical conductivity (EC), net acid generation (NAG) and sulfate ion (SO42−) concentrations in the acidic soil of copper sulfide mines; biochar obviously reduced the bio-effectiveness of heavy metals Cu, Pb and Zn, and DPTA-Cu, Pb and Zn decreased by 8~80%, 7~76% and 17~79%, respectively. Apart from that, there was a positive cooperativity between carbide slag and biochar, and their application effectively controlled the acidification process and heavy metal toxicity in the acidic soil of copper sulfide mines. In summary, the results will provide a theoretical basis for the large-scale reclamation of carbide slag and biochar in improving acidic soils of copper sulfide mines, filling the gap of calcium carbide slag and biochar in soil remediation.

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Section: Introductionmentioning

confidence: 99%

Effect of Carbide Slag Combined with Biochar on Improving Acidic Soil of Copper Sulfide Mines

et al. 2023

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“…Besides organic amendments, inorganic or mineral amendments, such as inorganic fertilization and chemical neutralizing agents or oxidizing agents, have also been applied to improve the fertility of soils and to adjust the pH of soils [19,20]. By metal-binding and acid-neutralizing capacity, drinking water treatment residuals showed the potential to effectively treat AMD-impacted soils [21]. Gangues and coal combustion byproducts, like fly ash, have been used for the reclamation of mining subsided land in some areas.…”

Section: Introductionmentioning

confidence: 99%

Responses of Natural Microorganisms to Land Reclamation and Applications of Functional Microorganisms in Biorestoration of Coal Mining Area

Mao,

Harris,

Zhang

2024

Diversity

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Extensive coal mining causes significant ecological and environmental impacts on the local ecosystem, especially on the terrestrial ecosystem. Mining activities induce the degradation of topsoil physico–chemical characteristics and the succession of soil microbial communities. The soil microbial community is sensitive to soil disturbance and restoration practices, being significant in soil reconstruction and land restoration. Microbes could be effective instruments to restore or reclaim disturbed terrestrial ecosystems and indispensable, unambiguous, indicators to assess reclaimed soils. In the present review, we aimed to provide insight into the effects of mining and subsequent land reclamation on soil microorganisms and the importance and application of microorganisms in the reclamation process. We address changes in the diversity and structure of the soil microbial community after reclamation and discuss the main driving factors of the community. We hypothesize that there is a discernible pattern or regularity in the variation of microbial community composition during the process of restoration succession. By employing the life strategy concept, the study attempts to identify and understand how microbial communities evolve during land reclamation. Land reclamation could improve the nutrients in the soil while increasing the proportion of saprotrophic microorganisms. In community succession, vegetation, soil properties, and reclamation time are key determining factors. Whereas bacteria, fungi, and archaea showed different responses to these factors, as they responded differently to varied soil environments, nutrition, and plants, and occupied different biological niches. Finally, we describe the applications of microorganisms as land reclamation monitors or promoters. This knowledge and understanding can provide comprehensive insight into the soil health condition and strong support for forecasting and decision-making in mine land restoration.

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“…Phytoremediation through the use of vetiver grass is the best option as it is capable of detoxifying various organic and inorganic toxins in its tissue in addition to removing them from soil and water [3]. Vetiver grass is belongs to the Poaceae family and it is native to south and south-east Asia [4].Vetiver grass has been widely utilized across the world to stabilize riverbanks and slopes, reduce soil erosion, and promote ecological restoration in addition to environmental cleanup [5].…”

Section: Introductionmentioning

confidence: 99%

Vetiver Floating Wetlands for Dyeing Effluent

Aarthy

Banu²,

Karthikeyan³

et al. 2022

IJECC

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As a result of industrialization, the degree of global water contamination has drastically grown in recent decades. Both rich and developing nations are seeing this worldwide trend, although the later are experiencing it more pronouncedly. Due to its extraordinary and distinctive morphological and physiological characteristics, the Vetiver Floating Wetlands (VFWs), which is based on Vetiver grass (Chrysopogon zizanioides), has been successfully used as a phytoremediation tool to remediate both polluted water like municipal wastewater such as sewage effluent, landfill leachate, urban runoff, drainage channels, industrial wastewater such as food processing factories, and contaminated land (mine overburden and tailings, solid waste dumps). This study focuses on the use of hydroponics and floating wetlands to clean contaminated dyeing effluent. This study aims to find the efficiency of Vetiver Floating wetlands over various physio-chemical parameters in Dyeing effluent. The study was laid down in Tamil Nadu Agricultural University, Coimbatore in 2022 during the month of April- May. The effluent was diluted to different concentrations namely 25%, 50%, 75% and 100%. Various parameters were analyzed in these treatments in Dyeing effluent. The samples were collected at 15 days interval analyzed for one month. In Dyeing effluent, 50% concentration of the effluent showed better results over Vetiver Floating Wetlands and the removal efficiency was greater at this particular concentration.

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A combined chemical and phytoremediation method for reclamation of acid mine drainage–impacted soils

Cited by 27 publications

References 36 publications

Effect of Carbide Slag Combined with Biochar on Improving Acidic Soil of Copper Sulfide Mines

Effect of Carbide Slag Combined with Biochar on Improving Acidic Soil of Copper Sulfide Mines

Responses of Natural Microorganisms to Land Reclamation and Applications of Functional Microorganisms in Biorestoration of Coal Mining Area

Vetiver Floating Wetlands for Dyeing Effluent

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