Mixture of illite-kaolinite for efficient water purification: Removal of As(III) from aqueous solutions

Omer, Omer Sakin; Hussein, Belal H. M.; Hussein, Mohammed Ali; Mgaidi, Arbi

doi:10.5004/dwt.2017.20801

Cited by 6 publications

(4 citation statements)

References 16 publications

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“…The results showed that the equilibrium period for removals greater than 96% using biochar 500 o C and greater than 98% using biochar 650 o C was 20 minutes. Increases in the initial availability of free sites may account for the quick increase in the first amount of adsorbed dye [17] .…”

Section: Determine the Equilibrium Timementioning

confidence: 99%

Adsorption of Crystal Violet Dye by Biochar produced from Sugarcane Bagasse under Different Temperatures

Mahdi,

Shihab,

Fahmi

2023

PJBAS

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Biochar has been successfully used to treat wastewater. The adsorption capacity of biochar and their properties depended on the temperature used at their production as well as on each type of feedstock. In this study biochar was produced from sugarcane bagasse at 500 o C and 650 o C, to investigate the adsorption behavior of crystal violet dye (CV). The batch technique was used to investigate the effects of physiochemical parameters (contact time and initial dye concentration). The data was submitted to first and second pseudoorder kinetic models. These equations were used to characterize the dye kinetics adsorption process. The study's findings demonstrated that the pseudo-second-order equation was the best fit for the kinetic studies (R 2 = 1 and R 2 = 0.9998) for both biochar 500 o C and biochar 650 o C, respectively. Furthermore, the quantity equilibrium (q values) calculated (qecal) from the pseudo-second-order were highly consistent with experimental q values (qeexp) compared to those calculated from the pseudo-first-order. Freundlich and Langmuir's adsorption isotherm models were used to calculate the adsorption constants. Freundlich adsorption isotherm correlation coefficient (R 2 ) values for biochar at 500 °C and biochar at 650 o C were 0.9944 and 0.9751, respectively. This finding indicates that crystal violet adsorption data can be best suited by the Freundlich adsorption isotherm.

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Section: Determine the Equilibrium Timementioning

confidence: 99%

Adsorption of Crystal Violet Dye by Biochar produced from Sugarcane Bagasse under Different Temperatures

Mahdi,

Shihab,

Fahmi

2023

PJBAS

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“…The experimental procedure is identical to that described in our earlier work [4,6]. The amount of CR adsorbed onto IKaol and DDAB-IKaol is determined by the difference between the initial and remaining concentration of CR solution by the following expression:…”

Section: Batch Adsorption Experimentsmentioning

confidence: 99%

“…Clay minerals exhibit a great potential and prospective as a cost-efficient adsorbent. Many studies have been carried out on the removal of cationic dyes using natural clay minerals [4][5][6]. Their results showed that cationic dyes such as methylene blue (MB) and crystal violet (CV) are more adsorbed by natural clay minerals than are the anionic ones such as CR dye.…”

Section: Introductionmentioning

confidence: 99%

An organified mixture of illite-kaolinite for the removal of Congo red from wastewater

Omer

Hussein

Ouf

et al. 2018

Journal of Taibah University for Science

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Congo red (CR), an anionic dye, is very harmful to the environment and should be removed via an easy and inexpensive technique. The adsorption of CR from an aqueous solution onto a mixture of illite-kaolinite clay minerals and surfactant-modified illite-kaolinite was investigated at different temperatures. The characterization of the raw clay mixture and the organified sample was confirmed with X-ray diffraction, FTIR spectroscopy, nitrogen gas adsorption at 77 K and transmission electronic microscopy techniques. Factors influencing the adsorption such as pH, adsorbent dosage and temperature were tested. The thermodynamic parameters G˚, H˚and S˚have been calculated, and it was found that the adsorption is exothermic in nature. The isotherm data were fitted by the linear form of the Langmuir and Freundlich models and showed a good fit with the Langmuir approach. The maximum adsorption capacity of surfactant-modified clay (83 mg/g) was found to be around 14 times higher than that of unmodified clay. Kinetic studies of CR on illite-kaolinite and organified illite-kaolinite were evaluated by pseudo-first-order and pseudo-second-order models.

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“…However, most of these techniques are expensive for developing countries and require skilled labor, hence the need to search for locally available materials to remove arsenic from drinking water. In recent years, local materials like laterite, shale, clay, illite, kaolinite and pozzolan have been used to remove arsenic from the water [11,12,13,14]. Speaking of local materials, natural shale has been used as an adsorbent to remove arsenic from water by Koua-koffi et al [15].…”

Section: Introductionmentioning

confidence: 99%

Removal of Arsenic from Simulated Groundwater using Calcined Shale as the Adsorbent

Koua-Koffi

Coulibaly

Sangaré

et al. 2021

IRJPAC

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Well water intended for human consumption in the Akouédo area (Ivory Coast) contained arsenic at a concentration average above 0.01 mg/L, WHO guideline value. The shale was used as an adsorbent for the removal of arsenic from these waters. This shale was collected in Lomo Nord in Ivory Coast, washed then dried at a temperature of 60°C and finally calcined in an oven at several temperatures: 200°C, 300°C, 400°C, 500°C, 600°C and 700°C. X-ray diffraction, Fourier transform infrared spectroscopy (FTIR) and thermal analysis (TGA-DSC) were used to characterize the fraction of uncalcined and calcined shale powder. Batch mode tests were performed with water containing arsenic in order to study the influence of contact time, initial concentration and pH on the adsorption of arsenic on calcined shale. The results showed that shale calcined at 300°C could remove 99.41% of arsenic in water. The treated water meets the World Health Organization (WHO) standard for drinking water. Regarding the kinetic data, 0.034 mg/g of arsenic was adsorbed on the calcined shale within 7 hours. At pH 8, the maximum reduction rate was estimated up to 96%. The pseudo-second order model is the most appropriate of all the models applied to describe the kinetic data. This study shows that slate shale calcined at 300°C could be used as a low cost adsorbent to remove arsenic from Akouédo well water for consumption.

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Mixture of illite-kaolinite for efficient water purification: Removal of As(III) from aqueous solutions

Cited by 6 publications

References 16 publications

Adsorption of Crystal Violet Dye by Biochar produced from Sugarcane Bagasse under Different Temperatures

Adsorption of Crystal Violet Dye by Biochar produced from Sugarcane Bagasse under Different Temperatures

An organified mixture of illite-kaolinite for the removal of Congo red from wastewater

Removal of Arsenic from Simulated Groundwater using Calcined Shale as the Adsorbent

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