A review on in situ phytoremediation of mine tailings

Wang, Li; Ji, Bin; Hu, Yuehua; Liu, Runqing; Sun, Wei

doi:10.1016/j.chemosphere.2017.06.025

Cited by 429 publications

(166 citation statements)

References 57 publications

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“…NO 2 À is oxidized to NO 3 À in the presence of ·OH generated by VUV/UV irradiation. [38] As another VUV/UV irradiation effect, the selectivity of ammonia production increases as the distance between the discharge region and reaction locus increases under VUV/UV irradiation. This is likely because NO 3 À and NO 2 À are reduced to form ammonia, or the presence of ions results in the formation of a highly reactive water phase.…”

Section: Production Of Ammonia From N 2 * and N 2 + By Vuv/uv Irradiamentioning

confidence: 99%

Contribution of Discharge Excited Atomic N, N₂*, and N₂⁺to a Plasma/Liquid Interfacial Reaction as Suggested by Quantitative Analysis

et al. 2019

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Electric‐discharge nitrogen comprises three main types of excited nitrogen species‐atomic nitrogen (Natom), excited nitrogen molecules (N2*), and nitrogen ions (N2+) – which have different lifetimes and reactivities. In particular, the interfacial reaction locus between the discharged nitrogen and the water phase produces nitrogen compounds such as ammonia and nitrate ions (denoted as N‐compounds generically); this is referred to as the plasma/liquid interfacial (P/L) reaction. The Natom amount was analyzed quantitatively to clarify the contribution of Natom to the P/L reaction. We focused on the quantitative relationship between Natom and the produced N‐compounds, and found that both N2* and N2+, which are active species other than Natom, contributed to P/L reaction. The production of N‐compounds from N2* and N2+ was enhanced upon UV irradiation of the water phase, but the production of N‐compounds from Natom did not increase by UV irradiation. These results revealed that the P/L reactions starting from Natom and those starting from N2* and N2+ follow different mechanisms.

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Section: Production Of Ammonia From N 2 * and N 2 + By Vuv/uv Irradiamentioning

confidence: 99%

Contribution of Discharge Excited Atomic N, N₂*, and N₂⁺to a Plasma/Liquid Interfacial Reaction as Suggested by Quantitative Analysis

et al. 2019

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“…On the other hand, mine tailing in the active process has high pH levels [67]. Then, in such situations, the MICP process could be used as a treatment alternative for heavy metal precipitation, leading to recovering those metals or to their disposition in a safe way.…”

Section: Mining and Metal Refinerymentioning

confidence: 99%

Can Microbially Induced Calcite Precipitation (MICP) through a Ureolytic Pathway Be Successfully Applied for Removing Heavy Metals from Wastewaters?

et al. 2018

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Microbially induced calcite precipitation (MICP) through a ureolytic pathway is a process that promotes calcite precipitation as a result of the urease enzymatic activity of several microorganisms. It has been studied for different technological applications, such as soil bio-consolidation, bio-cementation, CO 2 sequestration, among others. Recently, this process has been proposed as a possible process for removing heavy metals from contaminated soils. However, no research has been reported dealing with the MICP process for heavy metal removal from wastewater/waters. This (re)view proposes to consider to such possibility. The main characteristics of MICP are presented and discussed. The precipitation of heavy metals contained in wastewaters/waters via MICP is exanimated based on process characteristics. Moreover, challenges for its successful implementation are discussed, such as the heavy metal tolerance of inoculum, ammonium release as product of urea hydrolysis, and so on. A semi-continuous operation in two steps (cell growth and bio-precipitation) is proposed. Finally, the wastewater from some typical industries releasing heavy metals are examined, discussing the technical barriers and feasibility.

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“…Remediation of mine wastelands is one of the pressing needs to be addressed for social and economic development to be healthy and sustainable. The ultimate goal of mine land remediation is therefore the re-establishment of a productive, healthy and sustainable ecosystem for post-mining land use [3]. Currently, criteria for successful remediation have paid much attention to soil erosion, physico-chemical properties of the substrate and 2 of 12 vegetation characteristics [4,5].…”

Section: Introductionmentioning

confidence: 99%

Effects of Amendments on Soil Microbial Diversity, Enzyme Activity and Nutrient Accumulation after Assisted Phytostabilization of an Extremely Acidic Metalliferous Mine Soil

et al. 2019

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Current criteria for successful phytostabilization of metalliferous mine wastelands have paid much attention to soil physico-chemical properties and vegetation characteristics. However, it remains poorly understood as to how the soil microbial community responds to phytostabilization practices. To explore the effects of amendments on the microbial community after assisted phytostabilization of an extremely acidic metalliferous mine soil (pH < 3), a pot experiment was performed in which different amendments and/or combinations including lime, nitrogen-phosphorus-potassium (NPK) compound fertilizer, phosphate fertilizer and river sediment were applied. Our results showed the following: (1) The amendments significantly increased soil microbial activity and biomass C, being 2.6–4.9 and 1.9–4.1 times higher than those in the controls, respectively. (2) The activities of dehydrogenase, cellulase and urease increased by 0.9–7.5, 2.2–6.8 and 6.7–17.9 times while acid phosphatase activity decreased by 58.6%–75.1% after the application of the amendments by comparison with the controls. (3) All the amendments enhanced the nutrient status of the mine soil, with organic matter, total nitrogen and total phosphorus increased by 5.7–7.8, 3.1–6.8 and 1.1–1.9 times, relative to the mine soil. In addition, there were strong positive correlations between soil microbial community parameters and nutrient factors, suggesting that they were likely to be synergistic. From an economic view, the combination of lime (25 t ha−1) and sediment from the Pearl River (30%) was optimal for functional rehabilitation of the microbial community in the extremely acidic metalliferous mine soil studied.

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A review on in situ phytoremediation of mine tailings

Cited by 429 publications

References 57 publications

Contribution of Discharge Excited Atomic N, N₂*, and N₂⁺to a Plasma/Liquid Interfacial Reaction as Suggested by Quantitative Analysis

Contribution of Discharge Excited Atomic N, N₂*, and N₂⁺to a Plasma/Liquid Interfacial Reaction as Suggested by Quantitative Analysis

Can Microbially Induced Calcite Precipitation (MICP) through a Ureolytic Pathway Be Successfully Applied for Removing Heavy Metals from Wastewaters?

Effects of Amendments on Soil Microbial Diversity, Enzyme Activity and Nutrient Accumulation after Assisted Phytostabilization of an Extremely Acidic Metalliferous Mine Soil

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A review on in situ phytoremediation of mine tailings

Cited by 429 publications

References 57 publications

Contribution of Discharge Excited Atomic N, N2*, and N2+to a Plasma/Liquid Interfacial Reaction as Suggested by Quantitative Analysis

Contribution of Discharge Excited Atomic N, N2*, and N2+to a Plasma/Liquid Interfacial Reaction as Suggested by Quantitative Analysis

Can Microbially Induced Calcite Precipitation (MICP) through a Ureolytic Pathway Be Successfully Applied for Removing Heavy Metals from Wastewaters?

Effects of Amendments on Soil Microbial Diversity, Enzyme Activity and Nutrient Accumulation after Assisted Phytostabilization of an Extremely Acidic Metalliferous Mine Soil

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Contribution of Discharge Excited Atomic N, N₂*, and N₂⁺to a Plasma/Liquid Interfacial Reaction as Suggested by Quantitative Analysis

Contribution of Discharge Excited Atomic N, N₂*, and N₂⁺to a Plasma/Liquid Interfacial Reaction as Suggested by Quantitative Analysis