Polypyrrole and rice husk composite potential for the adsorptive removal of 2,4,6-trichloro phenol from aqueous medium

Abstract

The rice husk (RH) composite with polypyrrole (PPY-RH) was fabricated and investigated for the abatement of TCP (2,4,6-trichlorophenol) in column adsorption mode. The flow rate, bed height and TCP inlet concentration are the influential parameters, which were optimized for the enhanced removal of TPC. The breakthrough time declined with bed depth decrease, while it was reverse for flow rate and TPC inlet concentration. It was also depicted that with a higher in flow rate, less bed height and inlet TCP concentration, the biosorption capacity decreased. Column models viz. Thomas and Bed Depth Service fitted better with the TCP adsorption data of TPC. Scanning electron microscope (SEM) analysis was also performed -pre and post adsorption and it was observed that the surface characteristics of the composite was changed significantly after the adsorption of TCP and similar observation was observed in FTIR analysis. The thermogravimetry analysis (TGA) was accomplished in order the check the stability, which revealed promising stability of the prepared composite. The rice husk composite with PPY has potential for the removal of TCP, which has promising capability for the adsorptive removal of TCP from the effluents.

Keywords

• Tricholorophenol
• Column mode
• Sorption
• Kinetics
• Composite
• Wastewater