Removal of metalloids and heavy metals from acid mine drainage using biosynthesized Fe/Cu NPs

Pan, Zibin; Liu, Mengying; Chen, Zuliang

doi:10.1016/j.bej.2023.109158

Cited by 3 publications

(2 citation statements)

References 31 publications

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“…Mineral resources constitute a crucial cornerstone of China’s economic development [ 2 ] but at the cost of severe environmental degradation. During mineral exploitation, the outflow of wastewater [ 3 ], stacking of waste residue and tailings [ 4 ], and leaching contribute to the accumulation of significant amounts of heavy metals in the mining area and surrounding soil. Cd and Pb levels in mining areas were 7.0% and 1.5% greater than normal soil levels, respectively, according to the “National Soil Pollution Survey Bulletin” issued by China in 2014 [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

Organic Materials Promote Rhododendron simsii Growth and Rhizosphere Soil Properties in a Lead–Zinc Mining Wasteland

Chen,

Li,

Cai

et al. 2024

Plants

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The mining of metal minerals generates considerable mining wasteland areas, which are characterized by poor soil properties that hinder plant growth. In this study, a field plot experiment was carried out in the mining wasteland of the Lanping lead–zinc mine in Yunnan Province to study the effects of applying three organic materials—biochar (B), organic fertilizer (OF), and sludge (S)—at concentrations of 1% (mass fraction), on promoting the soil of mining wasteland and the growth of two plant varieties (Huolieniao and Yingshanhong). The results showed that the amount of available nutrients in the surface soil of a mining wasteland could be considerably increased by S and OF compared to the control check (CK). In the rhizosphere soils of two Rhododendron simsii varieties, the application of S increased the available phosphorus (P) content by 66.4% to 108.8% and the alkali-hydrolyzed nitrogen (N) content by 61.7% to 295.5%. However, the contents of available cadmium (Cd) and available lead (Pb) were reduced by 17.1% to 32.0% and 14.8% to 19.0%, respectively. Moreover, three organic materials increased the photosynthetic rate and biomass of two R. simsii varieties. Specifically, OF and S were found to significantly increase the biomass of R. simsii. Organic materials have direct impacts on the increased plant height and biomass of R. simsii. Additionally, organic materials indirectly contribute to the growth of R. simsii by reducing the content of available Cd and available Pb in rhizosphere soil while increasing the content of available nutrients according to the structural equation model (SEM). Overall, S can stabilize Cd and Pb, increase soil nutrient contents, and promote the growth of R. simsii effectively, and has great potential in the vegetation reconstruction of mining wasteland.

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Section: Introductionmentioning

confidence: 99%

Organic Materials Promote Rhododendron simsii Growth and Rhizosphere Soil Properties in a Lead–Zinc Mining Wasteland

Chen,

Li,

Cai

et al. 2024

Plants

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“…In order to do this, the World Health Organization (WHO) proposed the permissible levels of 0.01 and 0.1 mg•L −1 for Cd(II) and Pb(II) ions in potable water [6]. Most importantly, it is critical to obtain more economical and effective treatment methods to mitigate the severe heavy metal hazard to human health and safety [7].…”

Section: Introductionmentioning

confidence: 99%

Adsorption Kinetics and Mechanism of Pb(II) and Cd(II) Adsorption in Water through Oxidized Multiwalled Carbon Nanotubes

Li,

Cui,

et al. 2024

Applied Sciences

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Toxic heavy metals are ubiquitous in the aquatic environment and show a significant danger to human health. Carbon nanotubes have been extensively used in treating the contamination of groundwater due to their porous multi-layer nature. Batch tests revealed that oxidized multiwalled carbon nanotubes (O-MWCNTS) offer better removal of Pb(II). The removal rate of Pb(II) was 90.15% at pH 6 within 24 h, which was ~58% more than that of Cd(II). The removal rate decreased to 55.59% for Pb(II) and to 16.68% for Cd(II) when the initial concentration of Pb(II)/Cd(II) ranged from 5 to 15 mg·g−1. The removal rate in the competitive tests was about 60.46% for Pb(II) and 9.70% for Cd(II). The Langmuir model offered better description of the adsorptive data for both ions. And the Qm of Pb(II) was 5.73 mg·g−1, which was 2.39 mg·g−1 more than that of Cd(II) in a single-icon system, while Qm was 7.11 mg·g−1 with Pb(II) and 0.78 mg·g−1 with Cd(II) in competitive water. And thermodynamic tests further indicated that the activating energy of Pb(II) and Cd(II) was 83.68 and 172.88 kJ·mol−1, respectively. Lead and cadmium adsorbed on the surface of O-MWCNTS are antagonistic in the competitive system. Based on XPS analyses, it was concluded that the absorbed lead/cadmium species on O-MWCNTS were (-COO)2Pb, (-COO)Pb(-O)/(-COO)2Cd, and (-COO)Cd(-O). Additionally, they offered theoretical evidence supporting the practicality of using nanocomposite membranes as a means to remove cadmium and lead.

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Facile Synthesis of Sodium Iron Silicate/Sodium Iron Oxide Silicate Nanostructures from Canned Beans and Rice Husk Wastes for Efficient Removal of Cd(II) Ions from Aqueous Media

El-Seidi,

Khedr,

Mansour

et al. 2024

Silicon

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Removal of metalloids and heavy metals from acid mine drainage using biosynthesized Fe/Cu NPs

Cited by 3 publications

References 31 publications

Organic Materials Promote Rhododendron simsii Growth and Rhizosphere Soil Properties in a Lead–Zinc Mining Wasteland

Organic Materials Promote Rhododendron simsii Growth and Rhizosphere Soil Properties in a Lead–Zinc Mining Wasteland

Adsorption Kinetics and Mechanism of Pb(II) and Cd(II) Adsorption in Water through Oxidized Multiwalled Carbon Nanotubes

Facile Synthesis of Sodium Iron Silicate/Sodium Iron Oxide Silicate Nanostructures from Canned Beans and Rice Husk Wastes for Efficient Removal of Cd(II) Ions from Aqueous Media

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