Composite of polypyrrole with sugarcane bagasse cellulosic biomass and adsorption efficiency for 2,4-dicholrophonxy acetic acid in column mode

Abstract

The 2,4-Dicholorophenoxyacetic acid (2,4-D) is a herbicide used against broad leave herbs and it is carcinogenic and mutagenic in nature, which need to be remediated to avoid negative impact on the living organisms. In view of promising adsorption efficiency of composite materials, the present investigation is focused on the preparation of polypyrrole (PPY) and sugarcane bagasse (SB) based composites. The composites were characterized for surface properties and thermal stability. The prepared composite was utilized for the sequestration of 2,4-D from aqueous solution in column mode as function of bed height, flow rate and 2,4-D concentration. Thomas model was applied to the rate of adsorption at different 2,4-D concentrations, flow rates and bed heights to predict the breakthrough curves. The BDST (bed depth service time) model was also applied to predict the breakthrough curves as function of bed heights. The biosorption capacities of SB and PPY/SB were 6.1 and 8.63 (mg/g), respectively. The results indicated that sugarcane bagasse composite with PPY is efficient adsorbent for the remediation of 2,4-D and could have potential for the removal of herbicides from effluents.

Keywords

• Biocomposites
• Polypyrrole
• Sugarcane bagasse
• 2, 4-dicholorophenoxy acetic acid
• Adsorption
• Column study