Preparation and characterization of natural bentonite in to nanoparticles by co-precipitation method

Sirait, Makmur; Bukit, Nurdin; Siregar, Nurdin

doi:10.1063/1.4973084

Cited by 32 publications

(26 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The resultant clay is referred as (NC) as the native form of clay adsorbent. Thereafter, the clay is introduced for a chemical activation according to the previously reported in literature [27]. The clay is sieved through a 200 mesh and cooked with a 10 M diluted HCl for 90 min with heating (70 °C) and stirring (300 rpm speed).…”

Section: Preparation Of Clay Adsorbentmentioning

confidence: 99%

Eco-friendly removal of hexavalent chromium from aqueous solution using natural clay mineral: activation and modification effects

Ashour

Tony

2020

SN Appl. Sci.

View full text Add to dashboard Cite

Inexpensive and naturally abundant clay mineral is investigated as a non-toxic and environmentally friendly adsorbent. The clay adsorbent prepared from natural clay (NC) by drying and milling then treated with diluted HCl before calcination to 600 °C. The structural and morphological properties of this modified clay are investigated by Fourier-transform infrared spectroscopy and scanning electron microscope. NC and modified clay at 600 °C (MC600) were applied for hexavalent chromium, Cr(VI), removal from aqueous media via batch adsorption facility. According to the experimental results, the adsorption capacity for chromium removal was calculated (14.3 mg g −1) with a removal efficiency reached to 66% after 90 min of equilibrium time. The sorption matrix indicated that Cr(VI) removal is following the pseudo-second order kinetic model. The experimental data are well fitted with Freundlich isotherm model and the adsorption process is suggested to follow a chemisorption and favourable uptake. The clay reusability was also tested and the outcomes suggested that MC600 had good potential as an economic adsorbent for chromium removal from contaminated water. According to this finding, modified NC is an effective adsorbent for direct Cr(VI) removal from aqueous media and the clay material is signified as an efficient treatment technology can also be adapted to heavy metal removal in wastewater treatment applications and could replace the commercially available adsorbents.

show abstract

Section: Preparation Of Clay Adsorbentmentioning

confidence: 99%

Eco-friendly removal of hexavalent chromium from aqueous solution using natural clay mineral: activation and modification effects

Ashour

Tony

2020

SN Appl. Sci.

View full text Add to dashboard Cite

show abstract

“…This result is better than Sirait's (2017) study performing nanobentonite synthesis having a crystalline size of 35.26 nm. 11 Figure 2 shows the mor phology of nanobentonite that tends to have a rough spherical shape. The particle size was analyzed by the Scherer equation.…”

Section: Discussionmentioning

confidence: 99%

“…10 Converting natural bentonite into a nano-scale bentonite can be conducted by using coprecipitation method. 11 This method is proven to be effective to result a bigger area of nanobentonite produced. Pawar (2015) reported, with a surface area method of coprecipitation, produced an area of 294 m 2 /g.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Nanobentonite as Heavy Metal Adsorbent with Various Solvents

et al. 2018

Self Cite

View full text Add to dashboard Cite

The nanobentonite has been synthesized from natural bentonite taken from Tapanuli Utara, Indonesia using coprecipitation method with various solvents (HCl, H2SO4, and HNO3). Its properties as a metal adsorbent were investigated by Atomic Adsorption Spectrophotometry. X-Ray Diffraction analysis revealed that the bentonite produced is in nanometer scale. The characterization results obtained from the SiO2single phase with highest dhkl was at millier index (101) with 2 of 21.9o, 22.0o, 22.07o respectively. The results of Microscope-Scanning Electron Energy analysis of nanobentonite dispersion indicated a reduction in agglomeration and finer nanobentonite surface. The Surface Area Analyzer results showed the SBET nanobentonite for solvent variation of HCL, H2SO4, and HNO3 respectively were 731.76 m2/g, 868.11 m2/g, 493.97 m2/ g. Lastly, Atomic Adsorption Spectrophotometric test showed that the optimal absorption of the metal content possessed by variety of HCl and nanobentonites with adsorption power of 91.16% for Pb, 76.39% for Cu, and 82.74% Co.

show abstract

“…Hasil yang didapat menunjukkan ukuran yang lebih besar dibandingkan dengan nanopartikel bentonit yang disintesis dengan metode ko-presipitasi, dengan rata-rata ukuran partikel adalah 35 nm (Sirait et al, 2017).…”

Section: Gambar 1 Hasil Preparasi Nanopartikel Bentonit Dengan Metodunclassified

Optimasi Formulasi Esens Sheet Mask Kombinasi Ekstrak Spirulina platensis dan Nanopartikel Bentonit dengan Metode Simplex Lattice Design

Wikantyasning

Nurhakimah

Sula

et al. 2019

Pharmaceutical Journal Of Indonesia

View full text Add to dashboard Cite

Spirulina platensis contained phycocyanin that has the potential for antioxidant activity. Bentonite contains various minerals that can absorb water and was known having ability for scavenging of free radicals. The purpose of this study was to obtain the optimum formulae of sheet mask essence, containing combination of Spirulina platensis extract and bentonite nanoparticles and evaluated the antioxidant activity using DPPH (2,2-diphenyl-1-pikrihidrazil) assay. Bentonite nanoparticles was prepared by High Energy Milling (HEM) method and characterized using Particle Size Analyzer (PSA). The results of the nanoparticles characterization was 152,8±0,69 nm for the particle size and 0.106±0.03 for PI value. Physical stability tests showed that the formula was homogenous, viscosity between 0.7-1.1 dPas, and pH between 5-6.5. The IC50 value of Spirulina platensis extract was 256.46 ppm with AAI category was medium. The antioxidant test of this fomula that contain Spirulina platensis extract and bentonite nanoparticles did not show any potential antioxidant activity. The concentrations of PEG 400 and Tween 80 were used to formulate the optimum formula were 4.29% w/w and 6.71% w/w.

show abstract

Preparation and characterization of natural bentonite in to nanoparticles by co-precipitation method

Cited by 32 publications

References 16 publications

Eco-friendly removal of hexavalent chromium from aqueous solution using natural clay mineral: activation and modification effects

Eco-friendly removal of hexavalent chromium from aqueous solution using natural clay mineral: activation and modification effects

Synthesis of Nanobentonite as Heavy Metal Adsorbent with Various Solvents

Optimasi Formulasi Esens Sheet Mask Kombinasi Ekstrak Spirulina platensis dan Nanopartikel Bentonit dengan Metode Simplex Lattice Design

Contact Info

Product

Resources

About