Sustainable removal of copper from wastewater using chemically treated bio-sorbent: Characterization, mechanism and process kinetics
Author | Al Ketife A.M.D. |
Author | Almomani F. |
Author | Znad H. |
Available date | 2022-04-25T08:00:14Z |
Publication Date | 2021 |
Publication Name | Environmental Technology and Innovation |
Resource | Scopus |
Identifier | http://dx.doi.org/10.1016/j.eti.2021.101555 |
Abstract | This study introduces the impact of treating chicken drumstick bones on the removal of copper ions from an aqueous solution. An untreated bio-sorbent (UTB), base treated bio-sorbent (BTB), acid-treated bio-sorbent (ATB), and detergent treated bio-sorbent (DTB) chicken bones were assessed as potential Cu (II) bio-sorbents (Bio-S). The treatment efficiency was judged on the Cu (II) percentage removal efficiency (%Removal) and the adsorption capacity (qm). The Bio-S were characterized using FTIR and SEM. The changes exhibited in the surface functional groups corresponded to the improvement in %Removal and qm. Isotherms (including, Langmuir, Freundlich and Dubinin?Radushkevich [D?R]) and kinetic models (including pseudo-first-order kinetics, pseudo-second-order kinetics, the Elovich equation, and the intra-particle diffusion model) were used to model and predict the adsorption process. The results indicated that the DTB achieved %Removal of 100% and a qm of 28 mg g?1 in comparison to 73% and 19 mg g?1 for the UTB. The BTB demonstrated comparable results to the DTB with a qm of 25 mg g?1 and % Removal of 100%. However, the ATB exhibited a significantly lower qm of 8 mg g?1 and %Removal of 5%. The pseudo-second-order model provided the best representation of the adsorption kinetic data. This suggests that the sorbent is connected to the adsorbent by two or more steps, including intra-particle diffusion. The characterization tests indicated that the BTB and DTB underwent changes in the surface functional groups, increased the surface porosity, and enhanced the %Removal of Cu (II). The significant removal efficiency of the DBT has shown some promising results as a sustainable bio-sorbent for the removal of heavy metals (HMs) from aqueous solutions. |
Language | en |
Publisher | Elsevier B.V. |
Subject | Adsorption capacity Bio-sorption Copper ions Crystallinity index Detergent Treated bones |
Type | Article |
Volume Number | 23 |
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Chemical Engineering [1155 items ]