Electrospun nylon 6,6 membrane as a reusable nano-adsorbent for bisphenol A removal: Adsorption performance and mechanism

M Jasmin Fathi Jasni; Mani Arulkumar; Palanivel Sathishkumar; Abdull Rahim Mohd Yusoff; Nor Aziah Buang; Feng Long Gu

doi:10.1016/j.jcis.2017.08.075

Electrospun nylon 6,6 membrane as a reusable nano-adsorbent for bisphenol A removal: Adsorption performance and mechanism

J Colloid Interface Sci. 2017 Dec 15:508:591-602. doi: 10.1016/j.jcis.2017.08.075. Epub 2017 Aug 23.

Authors

M Jasmin Fathi Jasni¹, Mani Arulkumar², Palanivel Sathishkumar³, Abdull Rahim Mohd Yusoff⁴, Nor Aziah Buang¹, Feng Long Gu⁵

Affiliations

¹ Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia.
² Department of Microbial Biotechnology, Bharathiar University, Coimbatore 641 046, Tamil Nadu, India.
³ Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education; School of Chemistry and Environment, South China Normal University, Guangzhou 510006, PR China. Electronic address: salemsathishkumar@gmail.com.
⁴ Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia; Centre for Sustainable Environment and Water Security (IPASA), Research Institute for Sustainable Environment (RISE), Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia; Centre for Sustainable Nanomaterials, Ibnu Sina Institute for Scientific and Industrial Research (ISI-SIR), Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia. Electronic address: rahim@kimia.fs.utm.my.
⁵ Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education; School of Chemistry and Environment, South China Normal University, Guangzhou 510006, PR China.

PMID: 28869916
DOI: 10.1016/j.jcis.2017.08.075

Abstract

Bisphenol A (BPA) is highly considered as an emerging contaminants (ECs) due to their endocrine disrupting and reproductive toxicant nature. It has been detected in drinking water sources in many countries. This study deals with the adsorptive removal of BPA using nylon 6,6 nanofibrous membrane (NNM) fabricated by electrospinning technique. Langmuir and Freundlich isotherm models (R²=0.99) were obeyed for BPA adsorption, which indicates the monolayer adsorption of BPA and also surface heterogeneity of NNM. The adsorption kinetics of BPA was followed pseudo second order rate (R²=0.89-0.99), which suggests the occurrence of rapid adsorption rate through interaction of surface functional groups present in NNM. The maximum adsorption of BPA (91.3mgg^-1) was attained at 30°C. The hydroxyl groups of BPA form hydrogen bonding with carbonyl groups of NNM during the adsorptive removal process. Reusability study confirmed a much better stability of NNM in the recyclic application. Finally, this study suggests that NNM might be an outstanding nano-adsorbent for the emerging contaminants removal, including BPA from drinking water sources.

Keywords: Adsorbent; Bisphenol A; Drinking water; Electrospinning; Nanofibrous membrane; Nylon.