The potential of ball-milled Serbian natural clay for removal of heavy metal contaminants from wastewaters: Simultaneous sorption of Ni, Cr, Cd and Pb ions

Djukić, Andjelka; Jovanović, Uroš; Tuvić, Tamara; Andrić, Velibor; Novaković, Jasmina Grbović; Ivanović, N.; Matović, Ljiljana

doi:10.1016/j.ceramint.2013.02.061

Cited by 50 publications

(16 citation statements)

References 27 publications

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“…To discriminate between adsorption and ion exchange processes (Djukić et al, 2013), the amount of Ca 2+ , Na + and Mg 2+ ions in the clays interlayer was determined before and after the lanthanum uptake (Table 2). In case of ion exchange, lanthanum replaces interlayer cations without modifying the overall positive charge of the clay interlayer.…”

Section: Pristine Clays Characterizationmentioning

confidence: 99%

Use of natural clays as sorbent materials for rare earth ions: Materials characterization and set up of the operative parameters

et al. 2015

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Section: Pristine Clays Characterizationmentioning

confidence: 99%

Use of natural clays as sorbent materials for rare earth ions: Materials characterization and set up of the operative parameters

et al. 2015

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“…The MC treatment appeared to decrease the structural order and to increase the specific surface area of clays. The present phenomena including fragmentation of the particles, abrasion, and amorphisation, can lead to a higher cation exchange capacity and thus to an improved sorption capability, (Jiang et al 2010;Fu and Wang 2011;Djukić et al 2013).…”

Section: Applications Of Mechanochemical Activationmentioning

confidence: 99%

Mechanochemical activation of natural clay minerals: an alternative to produce sustainable cementitious binders – review

2019

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Mechanochemical activation can be defined as a process able to induce structural disorder through intensive grinding. In certain conditions, it may increase the chemical reactivity of the processed material. The process is extensively utilized in extractive metallurgy, synthesis of nanocomposites or pharmacology. It is also considered an environmentally friendly alternative to activate kaolinitic clay avoiding high calcination temperature. This paper aims to give a comprehensive overview of the process, its evolution, process parameters and applications. The paper focuses on the mechanochemical treatment of natural clay minerals, aiming at their transformation into cementitious or pozzolanic materials. It provides a summarized review of the theories related to the mechanochemistry and discusses commonly used models. The paper also analyzes various key factors and parameters controlling the mechanochemical activation process. The optimization and control of the several factors, as the filling ratio, the grinding media, the velocity, the time of grinding, etc., can promote developments and new research opportunities on different fields of application. Examples of applications, with a special focus on mechanochemically activated clay minerals and their use as cementitious binders, are listed as well.

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“…Despite the vast diversity of target pollutants, most biosorption studies have focused on the removal of metals, which differ from other contaminants in that they are non-biodegradable and easily accumulate in the food chain [3][4][5]. Biosorption is an environmentally friendly and economical process for removal of metals, an alternative to conventional methods such as chemical precipitation [6][7][8], electrochemical processes [9], reverse osmosis [10,11], ion exchange processes [12,13], adsorption [14,15]. Along with the advantages, the methods used also have disadvantages like incomplete metal(s) removal, high energy and reagent requirements, generation of toxic sludge or other waste products, which makes careful disposal of waste requisite [16].…”

Section: Introductionmentioning

confidence: 99%

Immobilized microbial biosorbents for heavy metals removal

Velkova

Kirova

Stoytcheva

et al. 2018

Engineering in Life Sciences

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Intensive industrial and urban growth has led to the release of increasing amounts of environmental pollutants. Contamination by metals, in particular, deserves special attention due to their toxicity and potential to bioaccumulate via the food chain. Conventional techniques for the removal of toxic metals, radionuclides and precious metals from wastewater all have a number of drawbacks, such as incomplete metal extraction, high cost and risk of generating hazardous by‐products. Biosorption is a cost‐effective and environment‐friendly technology, an alternative to conventional wastewater treatment methods. Biosorption is a metabolically independent process, in which dead microbial biomass is capable of removal and concentrating metal ions from aqueous solutions. Free microbial biosorbents are of small size and low density, insufficient mechanical stability and low elasticity, which causes problems with metal ion desorption, separation of the sorbent from the medium and its regeneration. Hence, the possibilities for the implementation of continuous biosorbent processes for metal removal in flow‐type reactor systems are reduced and the practical application of biosorption in industrial conditions is limited. By immobilizing microbial biomass on suitable carriers the disadvantages of free biosorbents are eliminated and more opportunities for practical use of biosorption become available. This review examines different immobilization techniques and carriers, certain basic features and possibilities of using immobilized microbial biosorbents for the removal and concentration of metals from aqueous solutions.

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The potential of ball-milled Serbian natural clay for removal of heavy metal contaminants from wastewaters: Simultaneous sorption of Ni, Cr, Cd and Pb ions

Cited by 50 publications

References 27 publications

Use of natural clays as sorbent materials for rare earth ions: Materials characterization and set up of the operative parameters

Use of natural clays as sorbent materials for rare earth ions: Materials characterization and set up of the operative parameters

Mechanochemical activation of natural clay minerals: an alternative to produce sustainable cementitious binders – review

Immobilized microbial biosorbents for heavy metals removal

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