Antimony-complexed heavy metal wastewater in antimony mining areas: Source, risk and treatment

Deng, Songyun; Ren, Bozhi; Hou, Baolin; Deng, Renjian; Cheng, Shuangchan

doi:10.1016/j.eti.2023.103355

Cited by 4 publications

(3 citation statements)

References 119 publications

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“…Adding 0.04 g of adsorbent to 100 mL of 0.1 mg/L Sb(III) and applying 0.1 mM NaCl as the background electrolyte allowed for the measurement of the solution pH pzc . The solutions are adjusted to different beginning pH ranges (3)(4)(5)(6)(7)(8)(9)(10), and after a day, the ultimate pH of each solution is measured. The point zero charge (pH pzc ) of the adsorbent can be calculated by the intersection of the final and initial pH curves.…”

Section: Influence Factorsmentioning

confidence: 99%

“…q e = k F c 1/n e (7) where k L (L/mg) and k F are the Langmuir and Freundlich constants, respectively, q m (mg/g) is the adsorption maximum capacity, n is a dimensionless parameter that represents the affinity of the adsorbent for the adsorbent.…”

Section: Adsorption Isothermsmentioning

confidence: 99%

“…The level of antimony in natural water bodies ranges from tens of ng/L to several µg/L [4]. However, because of human activities like antimony mining, the concentration of Sb in the water body surrounding the antimony mining area can reach several thousand µg/L [5][6][7]. This is far greater than the limited concentration in the drinking water standards set by different nations and regions and poses a health risk to humans.…”

Section: Introductionmentioning

confidence: 98%

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Facile Preparation of Magnetic Chitosan Carbon Based on Recycling of Iron Sludge for Sb(III) Removal

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et al. 2024

Sustainability

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In this study, following the concept of “treating waste with waste”, magnetic chitosan carbon (MCC) was developed through the pyrolysis of chitosan/iron sludge (CHS) beads created using an embedding method in a closed environment for antimony removal. The results indicate MCC has a good magnetic recovery rate and that its magnetic saturation strength can reach 33.243 emu/g. The iron proportion and acid resistance of MCC were all better than those of CHS, and at 25 °C, its adsorption saturation capacity improved from 24.956 mg/g to 38.234 mg/g. MCC has a quick adsorption equilibrium time, and in about 20 min, 90% of the final equilibrium capacity can be achieved. The primary mechanism of Sb adsorption by MCC is the formation of an inner sphere complex between Fe-O and Sb, while surface complexation, hydrogen bonding, and interaction also play a function. Thus, MCC, a lower-cost and greener adsorbent for Sb removal, has been made using iron sludge. This enabled it to utilize iron sludge as a resource and served as a reference for the sustainable management of water treatment residuals.

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Section: Influence Factorsmentioning

confidence: 99%

Section: Adsorption Isothermsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

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Facile Preparation of Magnetic Chitosan Carbon Based on Recycling of Iron Sludge for Sb(III) Removal

Zeng,

Xu,

Zeng

et al. 2024

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Role of carbon nanotubes, carbon nano-fibres and nano-gels in eliminating pollutants from aqueous solution

Thayanithi,

Janakiraman,

Alagesan

et al. 2024

Physical Sciences Reviews

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Pollutants in water bodies is a major threat, which affects both flora and fauna, including humans. The environmental impact on pollutants due to increase in industrialization and growing populations has been increasing every year. The efficient removal of pollutants from aqueous solutions is a significant challenge in environmental remediation. In recent years, the application of nanomaterials has emerged as a promising strategy to address this issue. Of these nanomaterials, carbon nanotubes (CNTs), carbon nanofibers (CNFs), and nano-gels have attracted considerable attention due to their unique properties and their versatile functionalities. In this review, we have discussed about the recent advances in CNTs, CNFs, nanogels in eliminating pollutants from aqueous solution. CNTs possess a notable aspect ratio and demonstrate outstanding mechanical strength, enabling them to effectively adsorb a wide range of contaminants including heavy metals, organic compounds, and gases, CNFs have improved adsorption and catalytic characteristics. These entities exhibit efficacy in the elimination of contaminants from aquatic ecosystems and atmospheric currents, hence aiding in the restoration of polluted settings, and nano-gels, which are composed of cross-linked polymers arranged in three dimensions, offer a flexible framework for the encapsulation of pollutants and the precise delivery of substances. Functionalized nano-gels provide the targeted adsorption of particular contaminants, hence providing customised approaches for the management and mitigation of pollution. The utilisation of nanomaterials holds significant promise in the advancement of water treatment technologies, necessitating the enhancement of their practical applications.

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Geological, Mineralogical, Petrographic, Hydrogeological, and Environmental Evaluation of a Marble Site: Can the Site Damage Water Protection Zone?

Yıldız,

Uz,

Coşkun

et al. 2024

Preprint

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Antimony-complexed heavy metal wastewater in antimony mining areas: Source, risk and treatment

Cited by 4 publications

References 119 publications

Facile Preparation of Magnetic Chitosan Carbon Based on Recycling of Iron Sludge for Sb(III) Removal

Facile Preparation of Magnetic Chitosan Carbon Based on Recycling of Iron Sludge for Sb(III) Removal

Role of carbon nanotubes, carbon nano-fibres and nano-gels in eliminating pollutants from aqueous solution

Geological, Mineralogical, Petrographic, Hydrogeological, and Environmental Evaluation of a Marble Site: Can the Site Damage Water Protection Zone?

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