Document Details

Document Type : Article In Journal 
Document Title :
Removal of calcium ions from aqueous solutions by sugar cane bagasse modified with carboxylic acids using microwave-assisted solvent-free synthesis
Removal of calcium ions from aqueous solutions by sugar cane bagasse modified with carboxylic acids using microwave-assisted solvent-free synthesis
 
Subject : Chemistry 
Document Language : English 
Abstract : Removal of Ca(II) from aqueous solutions was potentially achieved using two new naturally benign sorbents. They were obtained via modification of sugar cane bagasse (SCB) with tartaric acid (TA) and citric acid (CA) using microwave-assisted solvent-free synthesis. The highest percentages of surface loading were realized under optimize conditions of mass ratio of SCB and TA or CA, microwave radiation power and time of radiation. Changes in spectral band positions of binding sites of SCB and its modified forms (SCB-TA and SCB-CA) were characterized using FT-IR before and after calcium ions sorption. Also, changes in surface morphology were explored in parallel, using scanning electron microscope (SEM). Moreover, for obtaining maximum Ca(II) removal, batch experiments were carried out at different parameters including hydrogen ion concentration, initial Ca(II) concentrations, mass of the sorbent and finally shaking times. Results of sorption isotherms were better fitted with the Langmuir model (r2=0.959 and 0.995 for SCB-TA and SCB-CA, respectively). In addition, the kinetics data were best fitted with the pseudo-second-order type. Applications of the new natural sorbents for lowering hardness and consequently conductivity and total dissolved solids (TDS) in different water samples was superior compared to the cation exchange resin Dowex 50W-X8. 
ISSN : 0011-9164 
Journal Name : Desalination 
Volume : 278 
Issue Number : 1 
Publishing Year : 1432 AH
2011 AD 
Article Type : Article 
Added Date : Monday, April 30, 2012 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
عزت محمود سليمانSoliman, Ezzat MResearcherDoctorateezzat_soliman@yahoo.com
Salwa A AhmedAhmed, Salwa AResearcherDoctorate 
Aliaa A FadlFadl, Aliaa AResearcherDoctorate 

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