Application of dirty-acid wastewater treatment technology in non-ferrous metal smelting industry: Retrospect and prospect

Du, Ying; Du, Yaguang; Ma, Wenbo; Zhao, Xiaolong; Ma, Mengyu; Cao, Longwen; Du, Dongyun

doi:10.1016/j.jenvman.2024.120050

Cited by 17 publications

(2 citation statements)

References 115 publications

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“…These results indicate that palygorskite content and curing age significantly impact internal pore structure and promote the early reaction of hydration. Palygorskite can adsorb a large amount of water, fill the pores of the cementitious material, and solidify heavy metal ions mainly in the form of adsorption [32,33]. The generation of hydration products reduces the pores in the cementitious material, but the previously filled pores are subject to more harmful pores (> 200 nm) due to water loss.…”

Section: Porositymentioning

confidence: 99%

Study on the Effect of Palygorskite on the Properties of Copper-Nickel Smelting Slag-Based Cementitious Materials

Zhu,

Wang,

et al. 2024

Preprint

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In order to study the feasibility of copper-nickel smelting slag（CNSS） and palygorskite for large-scale consumption and utilization in the field of mine filling, gellable composite materials were prepared from copper-nickel smelting slag ,cement and palygorskite. The effects of palygorskite addition and curing time on the mechanical properties and microstructure of copper-nickel smelting slag-based cementitious materials were studied in detail. The results showed that the addition of palygorskite had a positive effect on the curing of the cemented filler of the non-ferrous smelting slag by promoting the early hydration reaction. palygorskite also affected the mechanical properties of the cementitious materials with different maintenance times and the ability to cure heavy metals. The strength of gellable composite materials reaches 23.05MPa when 1% palygorskite, 50% of copper-nickel smelting slag and 48% cement were used, which meet the standards requirements of filling materials for mine goaf. The addition of 1% palygorskite can improve the ability of cementitious materials to solidify heavy metals to realize the economic utilization of solid waste in mining areas.

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Section: Porositymentioning

confidence: 99%

Study on the Effect of Palygorskite on the Properties of Copper-Nickel Smelting Slag-Based Cementitious Materials

Zhu,

Wang,

et al. 2024

Preprint

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“…Various industries, including mining, metal smelting, and manufacturing, release heavy metals into the environment as byproducts of their processes. For example, mining operations expose metals from the Earth's crust (Du, et al, 2024). Poor disposal of industrial waste, electronic waste, and household waste can introduce heavy metals into soil and water, turning landfills into potential contamination sources if not managed properly (Chakraborty, et al, 2024).…”

Section: Sources Of Heavy Metal Contaminationmentioning

confidence: 99%

Heavy Metal Contamination in Urban Soils: Health Impacts on Humans and Plants: A Review

Monib,

Niazi,

Azizi

et al. 2024

ejtas

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This research looks at how the growth of cities and industries affects the levels of heavy metals in the soil, which can impact people's health. We find out where the pollution comes from, such as factories, car fumes, and improper waste disposal, by reviewing existing studies. We use different methods to test the soil for heavy metals and study how exposure to these metals in urban areas affects people's health. The evidence shows a connection between high levels of heavy metals in city soil and health problems like breathing issues, brain disorders, and overall toxicity in the body. We also explore how these metals get into the human body, highlighting the importance of understanding how they are available and the ways people are exposed. To deal with polluted city soils, we look at different ways to manage the soil and suggest sustainable methods to reduce heavy metal pollution. Our discoveries add to what we know about urban environmental health, emphasizing the need for actions to protect city residents. Ultimately, this study aims to give important information and insights to policymakers, city planners, and public health officials for managing and lessening the health risks linked to heavy metal contamination in urban soils.

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Super‐Stable Mineralization of Metal Ions from Smelting Wastewater by In Situ Synthesis of NiFe‐Based Layered Double Hydroxides for Catalytic Phenol Hydroxylation

Wang,

Xu,

et al. 2024

Small Methods

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The super‐stable mineralization of metal ions from industrial wastewater by in situ synthesis of layered double hydroxides (LDHs) has been regarded as a sustainable approach from environmental protection and resource utilization perspectives. Herein, the study reports a super‐stable mineralization of metal ions including Ni, Fe, Cr, Mn, Cu, Ca, Al, etc. from smelting wastewater by in situ synthesis of NiFe‐based LDHs through facile coprecipitation. Such approach exhibits superior mineralization efficiency of metal ions simultaneously that can remove hundreds, thousands, or even tens of thousands mg/L of multiple metal ions to below the values of the Chinese National Emission Standards of Pollutants. Furthermore, the obtained NiFe‐based LDHs exhibit excellent catalytic performance of phenol hydroxylation due to the mineralization of multiple metals on the laminates, where 48.24% conversion of phenol and 71.58% selectivity of dihydroxybenzenes are realized under room temperature for 3 h. This work paves a sustainable strategy for hazardous material disposal and resource utilization.

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Application of dirty-acid wastewater treatment technology in non-ferrous metal smelting industry: Retrospect and prospect

Cited by 17 publications

References 115 publications

Study on the Effect of Palygorskite on the Properties of Copper-Nickel Smelting Slag-Based Cementitious Materials

Study on the Effect of Palygorskite on the Properties of Copper-Nickel Smelting Slag-Based Cementitious Materials

Heavy Metal Contamination in Urban Soils: Health Impacts on Humans and Plants: A Review

Super‐Stable Mineralization of Metal Ions from Smelting Wastewater by In Situ Synthesis of NiFe‐Based Layered Double Hydroxides for Catalytic Phenol Hydroxylation

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