Iminodiacetic acid functionalized magnetic peanut husk for the removal of methylene blue from solution: characterization
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RESEARCH ARTICLE
Iminodiacetic acid functionalized magnetic peanut husk for the removal of methylene blue from solution: characterization and equilibrium studies Aaron Albert Aryee 1 & Farid Mzee Mpatani 1 & Alexander Nti Kani 1 & Evans Dovi 1 & Runping Han 1 Lingbo Qu 1
&
Zhaohui Li 1 &
Received: 11 March 2020 / Accepted: 9 July 2020 # Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract A novel adsorbent PN-Fe3O4-IDA was developed by the chemical modification of magnetic peanut husk with iminodiacetic acid (IDA) and its efficacy for the sequestration of cationic dyes assessed using methylene blue (MB) as a model. This modification process enhanced the adsorption capacity of peanut husk as an adsorbent for dye sequestration and at the same time greatly minimized the adverse effects associated with its use in the pristine state. Results from the batch adsorption studies indicated that the uptake of MB onto PN-Fe3O4-IDA increased with MB concentration, contact time, temperature and pH whereas it decreased in the presence of some common salts. The pseudo-second-order kinetic model was observed to best describe the adsorption process which may greatly be influenced by the intra particle diffusion mass transfer. A maximum monolayer adsorption capacity of 43.5 mg g−1 was observed at 313 K according to the Langmuir model. There was good property of regeneration for MB-loaded PN-Fe3O4-IDA. Based on these results, as well as other unique features such as easy separation and preparation under benign environmental conditions, PN-Fe3O4-IDA exhibits great potential for the removal of MB and other cationic pollutants in practical applications with easy separation from solution using external magnet.
Keywords IDA-modified magnetic peanut husk . Adsorption . Methylene blue . Regeneration
Highlights • Iminodiacetic acid functionalized magnetic peanut husk (PN-Fe3O4-IDA) was synthesized. • PN-Fe3O4-IDA possessed mesoporous structure and operational convenience. • PN-Fe3O4-IDA exhibits excellent adsorption capacity and easy recovery from solution. • PN-Fe3O4-IDA can be regenerated using HCl (0.1 mol L-1) with a high efficiency of about 86 %. Responsible Editor: Tito Roberto Cadaval Jr * Runping Han [email protected]
Farid Mzee Mpatani [email protected]
* Zhaohui Li [email protected]
Alexander Nti Kani [email protected]
* Lingbo Qu [email protected] Aaron Albert Aryee [email protected]
Evans Dovi [email protected] 1
College of Chemistry, Zhengzhou University, No 100 of Kexue Road, Zhengzhou 450001, People’s Republic of China
Environ Sci Pollut Res
Introduction Global accessibility to quality water has been observed to decline over the past years. This trend is partly due to population increase as well as untreated effluents released from anthropogenic activities into the environment. It is estimated that about 3 out of 10 people worldwide lack access to clean and quality water with about 361, 000 children under the age of 5 years dying due to diarrhoea (WHO 2017). Methylene blue (MB) is a
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