Adsorption and thermodynamic study of Cephalosporins antibiotics from aqueous solution onto MgO nanoparticles

Fakhri, Ali; Adami, Saeideh

doi:10.1016/j.jtice.2013.09.028

Cited by 147 publications

(33 citation statements)

References 23 publications

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“…The adsorbate was distributed between the liquid and solid phases during adsorption process and attains maximum value on solid phase at equilibrium condition and the concentration of adsorbate in solution becomes constant at such condition (Fakhri 2017;Agarwal et al 2016;Fakhri and Behrouz 2015b;Fakhri and Adami 2014). In the present investigation, equilibrium study was done by varying initial fluoride concentrations in the range of 2.91-22.9 mg/L keeping other variables such as adsorbent dose, volume of solution, pH and temperature constant at of 4 g/L, 50 mL, 3 and 25°C, respectively.…”

Section: Kinetic Studymentioning

confidence: 99%

Application of response surface methodology for optimization of biosorption of fluoride from groundwater using Shorea robusta flower petal

et al. 2017

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Fluoride pollution in groundwater is a major concern in rural areas. The flower petal of Shorea robusta, commonly known as sal tree, is used in the present study both in its native form and Ca-impregnated activated form to eradicate excess fluoride from simulated wastewater. Response surface methodology (RSM) was used for experimental designing and analyzing optimum condition for carbonization vis-à-vis calcium impregnation for preparation of adsorbent. During carbonization, temperature, time and weight ratio of calcium chloride to sal flower petal (SFP) have been considered as input factors and percentage removal of fluoride as response. Optimum condition for carbonization has been obtained as temperature, 500°C; time, 1 h and weight ratio, 2.5 and the sample prepared has been termed as calcium-impregnated carbonized sal flower petal (CCSFP). Optimum condition as analyzed by one-factor-at-a-time (OFAT) method is initial fluoride concentration, 2.91 mg/L; pH 3 and adsorbent dose, 4 g/L. CCSFP shows maximum removal of 98.5% at this condition. RSM has also been used for finding out optimum condition for defluoridation considering initial concentration, pH and adsorbent dose as input parameters.The optimum condition as analyzed by RSM is: initial concentration, 5 mg/L; pH 3.5 and adsorbent dose, 2 g/L. Kinetic and equilibrium data follow Ho pseudo-secondorder kinetic model and Freundlich isotherm model, respectively. Adsorption capacity of CCSFP has been found to be 5.465 mg/g. At optimized condition, CCSFP has been found to remove fluoride (80.4%) efficiently from groundwater collected from Bankura district in West Bengal, a fluoride-contaminated province in India. Adsorption rate constant of pseudo-second-order adsorption rate equation (g mgMaximum adsorption capacity of the adsorbent (mg/ g) q eSolid phase concentration of fluoride at equilibrium (mg/g) q tSolid phase concentration of fluoride at any time t (mg/g) DS Change in entropy (kJ/mol K) t Contact time (h)Electronic supplementary material The online version of this article

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Section: Kinetic Studymentioning

confidence: 99%

Application of response surface methodology for optimization of biosorption of fluoride from groundwater using Shorea robusta flower petal

et al. 2017

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“…In addition, magnesium oxide (MgO) is an attractive basic oxide having found many important applications in catalysis, adsorption, refractory and superconductor products [21]. Furthermore, it is a unique oxide of high ionic character, simple stoichiometry and crystal structure and also can be prepared widely with variable particle sizes and shapes [22]. It has been reported that the shape and size of nanocrystalline magnesium oxide particles endow them with high specific surface and reactivity, because of the high concentration of edge/corner sites and structural defects on their surface [23].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of core–shell SiO 2 @MgO with flower like morphology for removal of crystal violet in water

Pei

Wang

Tian

et al. 2015

Journal of Colloid and Interface Science

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“…Similarly, Fakhri and his co‐workers reported MgO nanoparticles for removal of Cephalosporins (antibiotic) from aqueous solution. The adsorption capacity obtained was 500 mg g −1 in just 10 min at pH 9 . The pharmaceuticals removal using metal oxide based nanomaterials was listed in Table .…”

Section: Removal Of Organic Contaminants Using Nanomaterialsmentioning

confidence: 99%

Recent Progress in Nanomaterials for Adsorptive Removal of Organic Contaminants from Wastewater

2020

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Water being most vital component of life is getting contaminated due to inhuman disposal of toxicants in water bodies. Organic compounds such as dyes, pharmaceuticals/drugs, pesticides etc. are used for various purposes and become life threatening when dumped in water bodies without pre‐treatment. Removal of these toxicants from environment is complicated but highly essential for sustainable development. Various methods have been used for this purpose among which adsorption is the most simple, fast, effective and inexpensive method for the removal of such contaminants. Nanomaterial proved to be one of the best adsorbent due to its unique structural properties which provides large surface area and high adsorption capacity. The factors affecting adsorption along with adsorption mechanism is discussed in detail. Detection of the pollutants is also quite tedious work as pollutants are present in trace quantity. UV‐Visible spectrophotometry is widely used detection technique which is easy to operate, produce accurate results and cheap. The review emphasizes the use of nanomaterial as adsorbents for the removal of various organic pollutants from wastewater using UV‐Visible spectrophotometry.

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Adsorption and thermodynamic study of Cephalosporins antibiotics from aqueous solution onto MgO nanoparticles

Cited by 147 publications

References 23 publications

Application of response surface methodology for optimization of biosorption of fluoride from groundwater using Shorea robusta flower petal

Application of response surface methodology for optimization of biosorption of fluoride from groundwater using Shorea robusta flower petal

Synthesis of core–shell SiO 2 @MgO with flower like morphology for removal of crystal violet in water

Recent Progress in Nanomaterials for Adsorptive Removal of Organic Contaminants from Wastewater

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