Abstract
AbstractThe present study investigates a comparative study of the sorption of Cr3+and Cr6+from water using an agricultural by-product; mango peels in batch system under the effect of initial metal ion concentrations, solution pH, temperature, sorbent dose and contact time. Characterization of the mango peels was done before and after sorption of Cr3+and Cr6+using scanning electron microscopy, surface area pore size analyzer and FTIR spectroscopy. The pH study revealed that that maximum removal of Cr3+and Cr6+was obtained at pH 5.0 and 7.0 respectively. Among various kinetic models, pseudo-2ndorder well explained the data owing to the higher values of R2and the nearness between the values of experimental and calculated sorption capacities. The isotherms study revealed that Freundlich is the suitable isotherm for explanation of the equilibrium data due to higher R2values. The monolayer sorption capacity of mango peels was found to be 98.039 mg g-1for Cr3+and 66.666 mg g-1for Cr6+. The spontaneity and exothermic nature of the sorption process of Cr3+and Cr6+using mango peels was reflected from thermodynamic study.
Highlights
Introduction338 A. ul Haq et al.: A comparative sorption study of Cr3+ and Cr6+ using mango peels weight is the peels of mango and generated in a huge amount during the season
The coarseness of the surface of the mango peels was vanished after sorption of these metal ions which suggests an indication of Cr3+ and Cr6+ sorption
The surface area of mango peels powder was decreased after removal of Cr3+ and Cr6+ which confirms the adsorption of these metal ions
Summary
338 A. ul Haq et al.: A comparative sorption study of Cr3+ and Cr6+ using mango peels weight is the peels of mango and generated in a huge amount during the season. These peels have no proper use and the disposal of these wastes is a serious problem. Cellulose and pectin contain various functional groups such as carboxylic and hydroxyl. Due to these functional groups, the mango peels sequester different types of pollutants, especially metal ions [17,18,19]. Different parts of the mango such as mango seeds, mango peels, unfertilizable fruiting buds of mango plant and phosphate treated sawdust of mango tree have been employed to sequester dyes, phenol, heavy metal ions [20,21,22,23,24,25]
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
