Removal of Cr(VI) by biosorption on two agro waste materials, casuarinas fruit powder (CFP) and sorghum stem powder (SSP), has been investigated. The prepared adsorbent materials were characterized by SEM, EDX, FTIR and BET. These biomaterials effectively removed Cr(VI) with a maximum removal of 93.35% and 63.75% using 15 gL−1 and 5 gL−1 of CFP and SSP, respectively, at 60 oC with 20mgL−1 initial Cr(VI) concentration in solution. In both cases of adsorbents, kinetic data of adsorption fitted well in pseudo-second-order in terms of correlation coefficient (R2). This helps in proposing the process of adsorption as chemical coordination, which is correlated with the thermodynamic study results conducted at different values of temperature. Langmuir, Freundlich and D-R models were evaluated for description of metal sorption isotherms. Values of coefficients of intra-particle diffusion and mass transfer have also been determined at different values of temperature.
Comments: 10 Pages. OK
[v1] 2019-05-19 04:59:11
Unique-IP document downloads: 10 times
Vixra.org is a pre-print repository rather than a journal. Articles hosted may not yet have been verified by peer-review and should be treated as preliminary. In particular, anything that appears to include financial or legal advice or proposed medical treatments should be treated with due caution. Vixra.org will not be responsible for any consequences of actions that result from any form of use of any documents on this website.
Add your own feedback and questions here:
You are equally welcome to be positive or negative about any paper but please be polite. If you are being critical you must mention at least one specific error, otherwise your comment will be deleted as unhelpful.