Utilization of marble waste powder as a novel adsorbent for removal of fluoride ions from aqueous solution

Mehta, Dhiraj; Mondal, Poonam; George, Suja

doi:10.1016/j.jece.2015.12.040

Cited by 80 publications

(22 citation statements)

References 42 publications

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“…This may probably due to the augmented surface area and number of active sites available for the fixation of methylene blue. This is similar to the studies reported by (Jain et al, 2015;Mehta et al, 2016;Uddin et al, 2009). Figure 6.…”

Section: Effect Of Adsorbent Dosesupporting

confidence: 92%

Removal of methylene blue using activated carbon prepared from date stones activated with NaOH

2019

Global NEST: The International Journal

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<p>Synthetic dyes have a hurtful effect on human health and the environment. In this work, activated carbon was produced from date stones for use in elimination of methylene blue charged in aqueous solutions. Before that, the adsorbent was characterized by BET method, SEM, X-ray and TGA. The results of the adsorption kinetics are describe better with the pseudo-second order model (R2= 0.998). Frendlich adsorption isotherm model describe better the experimental data than the Langmuir model. The capacity for methylene blue removal was found to be 163.67 mg/g. Batch experiments studies show that the activated carbon produced as of date stones can be used effectively in the treatment of cationic dyes in aqueous solutions.</p>

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Section: Effect Of Adsorbent Dosesupporting

confidence: 92%

Removal of methylene blue using activated carbon prepared from date stones activated with NaOH

2019

Global NEST: The International Journal

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“…e Langmuir isotherm is based on the assumption of monolayer adsorption on a homogenous surface without interaction between adsorbates [14,50], while the Freundlich isotherm assumes the multilayer adsorption on heterogeneous surface [51]. We employed the Langmuir isotherm and Freundlich isotherm in their nonlinear forms given by equations (9) and (10) respectively.…”

Section: Adsorption Isothermsmentioning

confidence: 99%

Activated Carbon from Prickly Pear Seed Cake: Optimization of Preparation Conditions Using Experimental Design and Its Application in Dye Removal

maguana

Elhadiri

Bouchdoug

et al. 2019

International Journal of Chemical Engineering

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In the present study, the experimental design method was used to optimize the preparation conditions of an activated carbon from prickly pear seed cake by phosphoric acid activation. The parameters studied include impregnation ratio, carbonization temperature, and carbonization time. The optimal conditions for the preparation of the activated carbon with high adsorption capacity for methylene blue were identified to be an impregnation ratio of 2.9, carbonization temperature of 541°C, and carbonization time of 88 min. The obtained activated carbon was characterized by SEM/EDX, FTIR, pHpzc, and its capacity to adsorb methylene blue. FTIR analysis and pHPZC showed the acidic character of the activated carbon surface. The adsorption capacity of the optimal activated carbon was found to be 260 mg·g−1 for methylene blue. The adsorption equilibrium of methylene blue was well explained by the pseudo-second-order model and Freundlich isotherm. Furthermore, the performance of the produced activated carbon was examined by the methyl orange removal.

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“…e methylene blue removal increases as the amount of the adsorbent increases and reaches a maximum value at 4 g•L −1 and 16 g•L −1 for optimal adsorbent and sugar scum powder, respectively. ese observations could be attributed to an increase in the surface area of the adsorbents and hence the number of available adsorption sites for the adsorption of methylene blue [13,31]. In addition, the methylene blue removal on optimal adsorbent was found to be greater than that for sugar scum powder.…”

Section: E Effect Of Factors On the Adsorption Of Methylene Blue (Y 2mentioning

confidence: 95%

Optimization of Preparation Conditions of Novel Adsorbent from Sugar Scum Using Response Surface Methodology for Removal of Methylene Blue

maguana

Elhadiri

Bouchdoug

et al. 2018

Journal of Chemistry

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A novel and inexpensive adsorbent was prepared from sugar scum for the removal of methylene blue as an organic pollutant from aqueous solutions. The response surface methodology was used to study the effects of the calcination temperature and time on the yield and the methylene blue adsorption. In order to determine the optimal conditions of the preparation, the Doehlert design and desirability function were applied. The increase in calcination temperature increases the methylene blue adsorption and induces a reduction in yield. The optimal conditions have been identified to be a calcination temperature of 986°C and calcination time of 61 min. The characteristics of the obtained adsorbent were determined using SEM/EDX, and surface functions were obtained based on FTIR and pHpzc. The produced adsorbent had a porous structure and a pHpzc of 12.5. The results showed that the yield was 49.74% and the adsorption of methylene blue was 24.52 mg·g−1 with a contact time of 10 h determined by kinetic test. The sugar scum was found to be an effective material for the preparation of appropriate adsorbent for dye removal from wastewater.

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Utilization of marble waste powder as a novel adsorbent for removal of fluoride ions from aqueous solution

Cited by 80 publications

References 42 publications

Removal of methylene blue using activated carbon prepared from date stones activated with NaOH

Removal of methylene blue using activated carbon prepared from date stones activated with NaOH

Activated Carbon from Prickly Pear Seed Cake: Optimization of Preparation Conditions Using Experimental Design and Its Application in Dye Removal

Optimization of Preparation Conditions of Novel Adsorbent from Sugar Scum Using Response Surface Methodology for Removal of Methylene Blue

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