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Evaluation of hydrochar efficiency for simultaneous removal of diclofenac and ibuprofen from aqueous system using surface response methodology

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A Correction to this article was published on 13 March 2019

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Abstract

Pharmaceutically active compounds like diclofenac (DFS), ibuprofen (IBP), and other drugs that persist in the environment are listed as emerging contaminants. These escape from normal wastewater treatment plants and find their way to water streams; therefore, alternate treatment processes are needed. Herein, a sorbent material is reported that is prepared through hydrotermal carbonization from dried fruit powder of Zizipus mauritiana L. (HTC-ZM) and applied for simultaneous removal of DFS and IBP. Carbonized material (HTC-ZM) was found as agglomerates of approximately 1 μm particle size with surface area of 1160 m2/g having oxygen functional groups (e.g., COO, O, C=O) on surface. Simultaneous removal of IBP and DFS onto HTC-ZM was studied using response surface methodology with a set of 18 experiments using factors such as pH, amount of sorbent, contact time, and sorbate concentration. Maximum removal efficiency was obtained 88% and 97% for DFS and for IBP, respectively, with adsorption capacity of 2.03 mmol g−1 for DFS and 2.54 mmol g−1 for IBP. Kinetics modeling and “mean free energy” values predicted that sorption is mainly governed by physical interactions followed by “pore filling” mechanism for uptake of DFS and IBP.

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  • 13 March 2019

    The original publication of this paper contain typographical mistakes.

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Funding

Financial support from Pak-US Science and Technology Cooperation Program, Phase VI (Project No. 6/6/PAK-US/EC/2015/06) is highly acknowledged.

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Correspondence to Najma Memon.

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Responsible editor: Philippe Garrigues

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The original version of this article was revised:

The original publication of this paper contain typographical mistakes.

The published paper had missed letter ‘H’ in some parts of text, references and figure captions. These changes does not affect the findings of paper.

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Qureshi, T., Memon, N., Memon, S.Q. et al. Evaluation of hydrochar efficiency for simultaneous removal of diclofenac and ibuprofen from aqueous system using surface response methodology. Environ Sci Pollut Res 26, 9796–9804 (2019). https://doi.org/10.1007/s11356-019-04359-z

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  • DOI: https://doi.org/10.1007/s11356-019-04359-z

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