Application of eggshell wastes for boron remediation from water

Al-Ghouti, Mohammad A.; Salih, Nusrath Rushdha

doi:10.1016/j.molliq.2018.02.074

Cited by 51 publications

(28 citation statements)

References 46 publications

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“…Therefore, the adsorption process is influenced by the temperature and pH of the aqueous solution; concentration and molecular size of the adsorbate; and structure, polarity, specific surface area, and pore size of the adsorbent (Choi et al, ; Edathil, Shittu, Zain, Banat, & Haija, ). Among the various parameters affecting the adsorption process, pH is one of the most important because the ionic form of the adsorbate in the aqueous solution varies depending on the pH (Al‐Ghouti & Salih, ; Dai et al, ). To investigate the effect of pH on the adsorption of Pb(II) using CES, the pH was controlled to 2–10 within a contact time of 60 min.…”

Section: Resultsmentioning

confidence: 99%

Assessment of the adsorption kinetics, equilibrium, and thermodynamic for Pb(II) removal using a low‐cost hybrid biowaste adsorbent, eggshell/coffee ground/sericite

Choi

2019

Water Environment Research

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A hybrid adsorbent (CES), coffee grounds, eggshell powder and sericite as a binder, was prepared to remove Pb(II) from aqueous solution. The Fourier‐transform infrared spectroscopy analysis showed that the CES contained a large amount of OH groups and had a favorable structure for adsorbing heavy metals. The value of pHpzc of CES was estimated at 7.08. In the neutral pH region, the surface of CES is negatively charged and favorable for adsorption of Pb(II). The maximum Langmuir adsorption amount was 155.67 mg/g, and the adsorption process of Pb(II) using CES fitted pseudo‐second‐order kinetic model and Langmuir isotherm model. Moreover, the analysis of adsorption energy, free energy, enthalpy, and entropy found that the adsorption of Pb(II) onto CES was physical and a spontaneous exothermic reaction. CES is a hybrid adsorbent using general municipal waste and has great advantages in terms of environmental conservation and sustainable environmental circulation. This allows it to compete with other adsorbents. Practitioner points A hybrid adsorbent, coffee grounds, eggshell, and sericite (CES), was used to remove Pb(II) Adsorption of Pb(II) using CES in an aqueous solution was physical rather than chemical CES contained a large amount of OH groups and had a favorable structure for adsorbing heavy metals The reactivity and strength of the adsorption of Pb(II) onto CES was very good CES has great advantages in terms of environmental conservation and sustainable environmental circulation.

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Section: Resultsmentioning

confidence: 99%

Assessment of the adsorption kinetics, equilibrium, and thermodynamic for Pb(II) removal using a low‐cost hybrid biowaste adsorbent, eggshell/coffee ground/sericite

Choi

2019

Water Environment Research

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“…In addition, appearance of peaks around 713 (also C-H) and 1062 cm −1 are attributed to conversion of carbonate to Ca-O. The sharp peak at 3650 cm -1 and a little peak at 2355 cm -1 were assigned to O-H group in (CaOH)2 resulted from water adsorbed [5,12,[17][18][19][20]. On the other hand, the peaks at 3290 and 1651 cm -1 could be due to presence of amines in the eggshell membrane particle [17].…”

Section: Ftir Analysesmentioning

confidence: 99%

“…It was seen that, all adsorbents was exhibited a porous structure and regular and popcorn appearance. Al-Ghouti et al [5] reported that, this is due to calcination which leads to the formation of pores where the major inorganic composition is CaO.…”

Section: Ftir Analysesmentioning

confidence: 99%

“…Synthetic dyes are toxic, carcinogenic and mutagenic and also discharging of dyes into natural streams without untreated causes a severe environmental problem. This problem results in adverse effects on human and animal health and therefore the removal of dyes from wastewater is important [1][2][3][4][5]. A variety of treatment methods are used such as physical, chemical and biological process to removal of dyes from wastewater.…”

Section: Introductionmentioning

confidence: 99%

“…Approximately 85-95% of the eggshell is calcium carbonate and is confirmed as an adsorbent in which the adsorption takes place mainly by the exchange reaction. Therefore, studying and analyzing the structure of the eggshell is important understand its properties as an adsorbent [2,5].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Modifier Agents on Particle Size and Surface Functional Groups of Calcined Eggshell: Test in Adsorption of Remazol Yellow

Aktı

2020

Sakarya University Journal of Science

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Calcined eggshell (CES) was modified with Pluronic 123 (P123), Pluronic 127 (F127) and polyethylene glycol (PEG) agents and used in adsorption of Remazol Yellow. The adsorbents were characterized by Fourier transform infrared (FTIR) and scanning electron microscopy/energy dispersive X-ray spectroscopy (SEM/EDX). FTIR spectrums showed that characteristic peaks corresponding to CES and modifier agents were observed and CES was successfully modified. Modification of CES with PEG having high chain length (or high molecular weight) positively affected particle size. From EDX analysis was determined the carbon content increased from 21.44 % to 36.60 % whereas the calcium content decreased from 21.23 % to 8.69 % with increasing of the molecular weight of modifier agents. Removal percent of Remazol Yellow was found as 68.55, 91.79, 93.09 and 95.69 for CES, CES-P123, CES-F127 and CES-PEG, respectively. CES-PEG adsorbed Remazol Yellow more than other adsorbents and also dye adsorption on it fitted to Freundlich isotherm model. Dye adsorption capacity of CES-PEG was obtained as 133.3 mg/g. Particle size and carbon content of adsorbents was more effective in adsorption of Remazol Yellow.

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