Ag-doped hydroxyapatite as efficient adsorbent for removal of Congo red dye from aqueous solution: Synthesis, kinetic and equilibrium adsorption isotherm analysis

Srilakshmi, Chilukoti; Saraf, Rohit

doi:10.1016/j.micromeso.2015.08.003

Cited by 138 publications

(55 citation statements)

References 45 publications

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“…Generally, the experimental data were analyzed using the pseudo-first-order, pseudo-second-order and intra-particle diffusion kinetic model (Srilakshmi and Saraf, 2016).…”

Section: Adsorption Kineticsmentioning

confidence: 99%

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Adsorption of Congo red from aqueous solution onto shrimp shell powder

Zhou

Fan

et al. 2018

Adsorption Science & Technology

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Two novel adsorbents derived from shrimp shell were prepared and their adsorption performances on Congo red were investigated. The results suggested that treated shrimp shell powder exhibited a higher adsorption capacity than raw shrimp shell powder. The factors of initial concentration, solution pH, adsorption time, and temperature were investigated. The maximum adsorption capacity of treated shrimp shell powder calculated according to the Langmuir isotherm model was 288.2 mg/g, which is much higher than that of chitin. The adsorption behavior could be fitted well by the pseudo-second-order kinetic model. Intra-particle diffusion model was also used to study the adsorption process. The thermodynamic parameters indicated the spontaneous and endothermic nature of the adsorption. Shrimp shell powder exhibited enough advantages such as large adsorption capacity, low cost, simple processing methods and high specific gravity compared with chitin or chitosan. This work confirmed that the shrimp shell biosorbent had a potential to be applied in dye wastewater treatment area.

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“…Generally, the experimental data were analyzed using the pseudo-first-order, pseudo-second-order and intra-particle diffusion kinetic model (Srilakshmi and Saraf, 2016).…”

Section: Adsorption Kineticsmentioning

confidence: 99%

“…) is the maximum amount of monolayer adsorption on the adsorbent surface (Srilakshmi and Saraf, 2016), and K L (LÁmg…”

mentioning

confidence: 99%

Adsorption of Congo red from aqueous solution onto shrimp shell powder

Zhou

Fan

et al. 2018

Adsorption Science & Technology

View full text Add to dashboard Cite

show abstract

“…where Ci (mg L -1 ) and Ce (mg L -1 ) are initial and equilibrium concentration of lead in the solution, V (L) is the volume of the lead solution, w (g) is the mass of adsorbent and qe is the amount of lead adsorbed per unit of adsorbent at equilibrium (mg g -1 ) [13].…”

Section: Experimental Methodsmentioning

confidence: 99%

Competitive adsorption of Pb2+ and Zn2+ ions from aqueous solutions by modified coal fly ash

Astuti¹,

Martiani²,

Khair³

2017

AIP Conference Proceedings

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Abstract. Coal fly ash (CFA), which is a solid waste generated in large amounts worldwide, is mainly composed of some oxides having high crystallinity, including quartz (SiO2) and mullite (3Al2O3 2SiO2), and unburned carbon as a mesopore material that enables it to act as a dual site adsorbent. To decrease the crystallinity, CFA was modified by sodium hydroxide treatment. The modified fly ash (MFA) contains lower amount of Si and Al and has a higher specific surface area than the untreated fly ash (CFA).

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“…It is commonly used as biological stain and chemical indicator. CR is not edible pigment which is not allowed to add into food because it has good stability and can not be biodegradable which causes serious harm to aquatic organisms and food web [1]. CR causes also the human body dyspnea, emesis, diarrhea and nausea and its metabolites benzidine has toxic and carcinogenic to the human body [2].…”

Section: Introductionmentioning

confidence: 99%

Separation/Analysis of Congo Red by Using Poly (Ionic Liquid) Immobilized Magnetic Nanoparticles Magnetic Solid Phase Extraction Coupled with Fluorescence Spectrophotometry

Bakheet¹

2017

SJAC

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Magnetic solid phase extraction (MSPE) accompanied with fluorescence spectrophotometry using Poly (ionic liquid) immobilized magnetic nanoparticles (PIL-MNPs) as sorbent was introduced for Congo red analysis in food. Poly (1-vinyl-3-butylimidazolium) bromide immobilized (MNPs) were prepared through co-polymerization of 1-vinyl-3-hexylimidazolium-based ionic liquid and vinyl-modified magnetic particles. Some of different types of parameters, such as pH value, adsorption temperature and time, sample volume, eluent type, were studied. Under the optimum conditions, the preconcentration factor for AR was 27. The linear range, detection limit (DL), correlation coefficient (R) and relative standard deviation (RSD) were found to be 0.10-9.00µg/mL, 5.2µg/L, 0.9987 and 3.10% (n=3, c=4.00µg/mL). This method had been successfully applied to the separation / analysis of Congo red in real samples.

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Ag-doped hydroxyapatite as efficient adsorbent for removal of Congo red dye from aqueous solution: Synthesis, kinetic and equilibrium adsorption isotherm analysis

Cited by 138 publications

References 45 publications

Adsorption of Congo red from aqueous solution onto shrimp shell powder

Adsorption of Congo red from aqueous solution onto shrimp shell powder

Competitive adsorption of Pb2+ and Zn2+ ions from aqueous solutions by modified coal fly ash

Separation/Analysis of Congo Red by Using Poly (Ionic Liquid) Immobilized Magnetic Nanoparticles Magnetic Solid Phase Extraction Coupled with Fluorescence Spectrophotometry

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