The removal of heavy metal ions from wastewater/aqueous solution using polypyrrole-based adsorbents: a review
Top Cited Papers
- 21 January 2016
- journal article
- review article
- Published by Royal Society of Chemistry (RSC) in RSC Advances
- Vol. 6 (18), 14778-14791
- https://doi.org/10.1039/c5ra24358k
Abstract
Water pollution caused by heavy metal ions is becoming a serious threat to human and aquatic lives day by day. Therefore, the treatment of heavy metal ions is of special concern for environmental scientists and engineers. Historically, various methods, such as physical and chemical precipitation, ion-exchange, reverse osmosis, membrane filtration, electrochemical treatment, solvent extraction, and adsorption, have been widely studied for the removal of these metal ions from aqueous/wastewater. However, over the past few decades, conducting polymer-based adsorbents have received considerable attention owing to their potential applications for different heavy metal ions especially Cr(VI), Zn(II), and Pb(II). Among the various conducting polymers, polypyrrole (PPy) based adsorbents play a major role for the removal of various heavy metal ions due to their ease of synthesis, biocompatibility and redox properties. The current review has mainly focused on the physico-chemical properties, adsorption characteristics and mechanism of different polypyrrole-based adsorbents, including PPy/biosorbents, PPy/Fe3O4 nanocomposites, PPy–polyaniline nanofibers, PPy–graphene nanocomposites, exfoliated PPy-organically modified clay nanocomposites, and hierarchical porous PPy-nanoclusters, as well as their applications towards the removal of heavy metal ions.Keywords
Funding Information
- University of Malaya (UMRG Project No. RG-262/13 AFR, UMRG Project No. RP014A-15SUS)
This publication has 148 references indexed in Scilit:
- Multicarboxylic hyperbranched polyglycerol modified SBA-15 for the adsorption of cationic dyes and copper ions from aqueous mediaApplied Surface Science, 2012
- Study of the removal of Zn(II) from aqueous solution using polypyrrole nanocompositeDesalination, 2011
- Metal (M=Co2+, Ni2+, and Cu2+) grafted mesoporous SBA-15: Effect of transition metal incorporation and pH conditions on the adsorption of Naproxen from waterMicroporous and Mesoporous Materials, 2010
- Cadmium exposure in the population: from health risks to strategies of preventionBioMetals, 2010
- Application of polypyrrole coated on wood sawdust for removal of Cr(VI) ion from aqueous solutionsReactive and Functional Polymers, 2007
- Arsenic removal from water/wastewater using adsorbents—A critical reviewJournal of Hazardous Materials, 2007
- Influence of pH, ionic strength and temperature on lead biosorption by Gelidium and agar extraction algal wasteProcess Biochemistry, 2005
- Mercury in waste in the European Union: sources, disposal methods and risksResources, Conservation and Recycling, 2004
- Conducting polymers as ion-exchangers for water purificationElectrochimica Acta, 2001
- Adsorption of copper, lead and cobalt by activated carbonWater Research, 1984