Nanomaterials as Sorbents to Remove Heavy Metal Ions in Wastewater Treatment

-While studying, a new nanocomposite carbon-bearing sorbent (TMCO) has been obtained as a result of thermal modification of sugar industry wastecarbonatation sludge.TMCO is a combination of carbonate basis covered by coal nanoparticles. The nanostructured layer from the amorphous carbon is penetrated by a lot of voids and canals, 50 nanometers or less in size, which are active adsorption centers. Experimental studies of wastewater sorption purification with copper and nickel ions, sodium lauryl sulfate, dairy milk processing industry components, oil products, dyes have been conducted. Practical significance of the new sorbent has been confirmed by tests on the factory floor of different enterprises. A complex mechanism of TMCO adsorption action with high wastewater purification has been established that allows recommending the nanocomposite as an effective sorbent to treat wastewater of different chemical compositions.

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“…The research results reveal that carbon nanomaterials possess much higher sorption capacity than usual activated carbons [13].…”

Section: Introductionmentioning

confidence: 91%

“…In the last decades, carbon nanomaterials have been widely used for heavy metal removal [13,14]. However, such materials as graphene, nanotubes are synthesized in specific technological conditions; in this respect, their production is very expensive.…”

Section: Introductionmentioning

confidence: 99%

Nanocomposite carbon-bearing sorption material

Sapronova

Свергузова

Фомина

2017

Proceedings of the International Conference "Actual Issues of Mechanical Engineering" 2017 (AIME 2017)

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“…TEM images show the size average of silica and nano sorbent was 8.0 nm and 7.4 nm respectively. The small size sorbent was made a high surface area and improved the extraction of metal ions from the solution [29].…”

Section: Morphological Analysis (Sem) and Compositional Analysis (Edax)mentioning

confidence: 99%

Nano-Silica Modified by Hematoporphyrin for Determination Some of Traces Metals Ions (Cu(II), Zn(II) and Mn(II)) in Environmental and Pharmaceutical Formula

Bakeir¹,

Attaf²,

El‐Shahat³

2017

J Environ Anal Toxicol

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“…Adsorption is an exceptional technique, which effectively reduces level of contamination in aqueous solutions. Nonetheless, in order to obtain the most favourable results, it is necessary to design the conditions of the adsorption process and also to make appropriate modifications to the adsorbent itself (Adebowale et al 2006;Debnath and Ghosh 2009;Sheela and Nayaka 2012;Wang et al 2012). …”

Section: Elution Testsmentioning

confidence: 99%

A comprehensive study of Cd(II) ions removal utilizing high-surface-area binary Mg–Si hybrid oxide adsorbent

Ciesielczyk

Bartczak

Jesionowski

2015

Int. J. Environ. Sci. Technol.

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Presented work concerns the application of synthetic oxide adsorbent in the removal of cadmium ions from its model, water solutions. In this study, a novel magnesium-silicon (Mg-Si) binary oxide adsorbent was prepared by a modified co-precipitation method, utilizing sodium silicate and magnesium sulphate solutions as precursors of silica and magnesium oxide, respectively. The material was thoroughly characterized in order to evaluate chemical composition (AAS, EDS and gravimetric method), crystalline structure (XRD), morphology (SEM), particle size distribution (DLS), characteristic functional groups (FTIR) and porous structure parameters (BET and BJH models). It was proved that the adsorbent is amorphous, with a micrometric-sized, irregular-shaped particles and relatively large surface area of 540 m 2 /g. Batch adsorption experiments were conducted to investigate the adsorption of Cd(II) ions on the prepared adsorbent, including evaluation of adsorption kinetics, the intraparticle diffusion model, the effect of pH, contact time, mass of the adsorbent, temperature and the effect of competitive Cl -and NO 3 -anions. During the study, it was confirmed that the adsorption of Cd(II) ions reached equilibrium within 30 min, which was found to fit well with a pseudo-secondorder kinetic model type 1 (r 2 = 0.998-0.999). The Mg-Si adsorbent exhibited high adsorption capacity for Cd(II) ions at pH above 7, and the maximum quantity of cadmium(II) ions adsorbed in optimal time was achieved for the highest metal ion concentrations: 18.22 (Cl -) and 15.46(NO 3 -) mg/g. The competitive anions present in the model cadmium salt solutions hindered adsorption in the sequence Cl-.

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Nanomaterials as Sorbents to Remove Heavy Metal Ions in Wastewater Treatment

Cited by 266 publications

References 65 publications

Nanocomposite carbon-bearing sorption material

Nanocomposite carbon-bearing sorption material

Nano-Silica Modified by Hematoporphyrin for Determination Some of Traces Metals Ions (Cu(II), Zn(II) and Mn(II)) in Environmental and Pharmaceutical Formula

A comprehensive study of Cd(II) ions removal utilizing high-surface-area binary Mg–Si hybrid oxide adsorbent

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