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Ojediran JO, Dada AO, Aniyi SO, David RO, Adewumi AD. Mechanism and isotherm modeling of effective adsorption of malachite green as endocrine disruptive dye using Acid Functionalized Maize Cob (AFMC). Sci Rep 2021; 11:21498. [PMID: 34728725 PMCID: PMC8563726 DOI: 10.1038/s41598-021-00993-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 09/13/2021] [Indexed: 12/07/2022] Open
Abstract
Cationic Malachite green has been identified as a candidate for the endocrine disruptive compound found in the environment. In this study, the mechanism and isotherm modeling of effective adsorption of cationic malachite green dye onto acid-functionalized maize cob (AFMC) was investigated by batch technique. The operational parameters such as initial concentration (100–600 mg/L); contact time (10–120 min) and pH (3–10) influenced the removal efficiency and quantity adsorbed. A maximum of 99.3% removal efficiency was obtained at optimum conditions. AFMC physicochemical properties (surface area 1329 m2/g and particle size 300 μm < Ф < 250 μm) enhanced its efficiency. Based on R2 > 0.97 and consistently low values of adsorption statistical error functions (ASEF), equilibrium data were best fitted to Freundlich isotherm. Kinetic data were best described by a pseudo-second-order model with consistent R2 > 0.98 and validated by ASEF. The mechanism of the process was better described by intraparticle diffusion. Evidence of the adsorption process was confirmed by the change in morphology via Scanning Electron Microscopy (SEM) and surface chemistry by Fourier Transform infrared (FTIR). The performance of AFMC enlisted it as a sustainable and promising low-cost adsorbent from agro-residue for treatment of endocrine disruptive dye polluted water.
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Affiliation(s)
- John O Ojediran
- Landmark University SDG 7 Research Group (Grow Affordable and Clean Energy), Omu-Aran, Nigeria.,Landmark University SDG 9 Research Group (Increase Industry, Innovation, and Infrastructure), Omu-Aran, Nigeria.,Department of Agricultural and Biosystems Engineering, Landmark University 9 (Increase Industry, Innovation, and Infrastructure), P.M.B.1001, Omu-Aran, Kwara, Nigeria
| | - Adewumi Oluwasogo Dada
- Landmark University SDG 6 Research Group (Clean Water and Sanitation), Omu-Aran, Nigeria. .,Landmark University SDG 11 Research Group (Sustainable Cities and Communities), Omu-Aran, Nigeria. .,Industrial Chemistry Programme, Nanotechnology Laboratory, Department of Physical Sciences, Landmark University, P.M.B.1001, Omu-Aran, Kwara, Nigeria.
| | - Stephen O Aniyi
- Landmark University SDG 7 Research Group (Grow Affordable and Clean Energy), Omu-Aran, Nigeria.,Department of Agricultural and Biosystems Engineering, Landmark University 9 (Increase Industry, Innovation, and Infrastructure), P.M.B.1001, Omu-Aran, Kwara, Nigeria.,Landmark University SDG GROUP 2 (Zero Hunger), Omu-Aran, Nigeria
| | - Robinson O David
- Department of Agricultural and Biosystems Engineering, Landmark University 9 (Increase Industry, Innovation, and Infrastructure), P.M.B.1001, Omu-Aran, Kwara, Nigeria
| | - Adejoke D Adewumi
- Landmark University SDG 7 Research Group (Grow Affordable and Clean Energy), Omu-Aran, Nigeria.,Department of Agricultural and Biosystems Engineering, Landmark University 9 (Increase Industry, Innovation, and Infrastructure), P.M.B.1001, Omu-Aran, Kwara, Nigeria
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Zhou H, Xie ZX, Liang L, Zhang P, Ma X, Kong Z, Shen JW, Hu W. Theoretical investigation on the adsorption orientation of DNA on two-dimensional MoSe2. Chem Phys 2021. [DOI: 10.1016/j.chemphys.2021.111329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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