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Efficient activation of peroxymonosulfate by iron containing mesoporous silica catalysts derived from iron tailings for degradation of organic pollutants Chemical Engineeriing Journal 2022 446 137044 [4] Zhaoli Yan Liangjie Fu Xiaochao Zuo Huaming Yang
Tailings from iron mining are characterized by high concentrations of iron and manganese oxides as well as high pH values With these characteristics most of the potentially toxic elements PTE contained in the tailings are somewhat unavailable The aim of
·Based on this we propose to use the spheres prepared from needle coke loaded with iron and copper bimetals as particle electrodes for 3DEF Iron tailings are the waste remaining after the separation of iron ore mining mainly composed of Si Ca Fe Al Mg elements which can be developed and utilized as secondary resources [38] [39] [40]
·Tailings containment dam failures cause severe environmental social and economic impacts Analyzing past occurrences allows society and decision makers to improve storage facility safety This study presents an overview of tailings dam failures exploring historical aspects and environmental consequences Two methodological strategies were used 1 An
·The electrospun membranes of iron tailings EF iron tailings could activate PMS for degradation of organic pollutants under visible light During reaction process visible light accelerated the valence state transition of iron which was conducive to the activation of PMS
·The characteristics of iron minerals in cyanidation tailings with a low iron grade were determined via chemical composition analysis iron phase analysis and mineral liberation analysis MLA The results showed that the cyanidation tailings contained % iron mainly occurring in the form of magnetite % and limonite % in which % magnetite
·Lamellar mesoporous Mg containing silicate adsorbents derived from iron ore tailings for high efficient adsorption of mycotoxins and antibiotics Author links open overlay panel Guangyan Tian a b c Xue Hua a b c Among the organic pollutants new appearing ones including antibiotics and mycotoxins are getting more and more attention in
·The comprehensive utilization of iron tailings a low grade and refractory iron mineral has received global attention Various recovery technologies including gravity separation [6] flotation [7] magnetic separation [8] and bioleaching [9] have been developed to exploit the rich iron resources in iron tailings based on the distinct properties of iron oxides and gangue
·Three dimensional observation of porous materials prepared from iron tailings and their pore wall site adsorption function Author links open overlay panel Xinyu Wen a Fei Huang a Wenyuan Gao a The adsorption capacity of the materials for phosphorus pollutants was evaluated as was the contribution of crystalline sites to the adsorption
·The results indicate the potential use of IOT for removing electric charged pollutants by adsorption especially anionic ones under acidic conditions ABSTRACT In this work an iron ore tailings sample IOT collected from a tailings dam in Minas Gerais Brazil was characterized The IOT presented point of zero charge of ∼ 6 specific surface area of 4 m2
·Additionally iron tailings have high silica content as a common solid waste which can easily form a ceramsite skeleton and is suitable for preparing materials with excellent compressive properties [3] [17] [18] Improving the strength and reducing the density to make it lighter are the two main problems that need to be solved in the sintering process of ceramsite
·Photocatalytic processes are efficient methods to solve water contamination problems especially considering dyeing wastewater disposal However high efficiency photocatalysts are usually very expensive and have the risk of heavy metal pollution Recently an iron oxides hydrothermal carbonation carbon HTCC heterogeneous catalyst was prepared
·Herein iron tailings were used to prepare iron containing mesoporous silica MFS materials under a one step hydrothermal route The as prepared MFS showed excellent photocatalytic degradation efficiency and stability over a
Semantic Scholar extracted view of "Monitoring and assessment of ecological systems used for iron and environmental pollutants remediation from aqueous medium" by Amit Chanchpara et al Mining operations degrade natural ecosystems by generating a large quantity of mine tailings Mine tailings remain in dams/open ponds without further
·The low utilization of sunlight and fast recombination of photogenerated electron hole pairs e − /h are the main reasons preventing the wide application of titanium dioxide TiO 2 in novel hybrid composite of TiO 2 /iron tailings TITs was synthesized in this study via a facile method as a photocatalyst for the degradation of
·The removal of heavy metal pollutants from industrial effluents has become an essential condition for the conduct of industrial activities in accordance with the principles of clean production Lucaci et al 2020a; Miranda et al 2022 Iron tailings as a valuable secondary resource is a part with low content of valuable elements
·Iron tailings usually contain As Cd Co Cr Cu Fe Mn Ni Pb and Zn some of which are highly toxic and carcinogenic Leaching is the process of extracting soluble substances from solids using leaching agents water acid alkali and salt solutions and it is a crucial hydrometallurgical method for metals extraction from various solids Ye et al 2017; Zhang et
·Iron tailings used as soil substitute materials to construct reclaimed farmland soil can effectively realize the large scale resource utilization of iron tailings and reduce environmental risks It is vital to understand the mechanisms affecting reclaimed soil quality and determine the appropriate pattern for reclamation with iron tailings
·Phytovolatilization means that volatile pollutants absorbed by plants can move into the leaves where they are discharged into the atmosphere by evaporation Cheng Y Huang F Li W Liu R Li G Wei J 2016 Test research on the effects of mechanochemically activated iron tailings on the compressive strength of concrete Constr Build Mater
·Herein iron tailings were used to prepare iron containing mesoporous silica MFS materials under a one step hydrothermal route The as prepared MFS showed excellent photocatalytic degradation efficiency and stability over a
·Tailings are characterized by their particle size which is a crucial physical attribute that significantly affects their properties and necessitates secure management and remediation [7] [8] [9] The ecological remediation of tailings involves their transformation into soil like substrates that are capable of supporting sustainable revegetation and nutrient cycling
·The pollutants degradation rate of iron ore tailings based heterogeneous catalysts is the main factor limiting its application Herein an iron ore tailings based Fenton like catalyst I/W 3 1 900 60 with a relatively fast catalysis rate was constructed by co pyrolysis 900°C 60 min holding time of iron ore tailings and wheat straw with a mass ratio of 3 1
·Evaluation and analysis of soil migration and distribution characteristics of heavy metals in iron tailings Author links open overlay panel Xu Zhang a 1 Huanhuan Yang b 1 Zhaojie Cui a Show more Add to Mendeley Share Cite Five main pollutants Cu Zn Pb Cd and Cr with certain migration capability pose a threat to groundwater and
