Pollution Removal Performance of Chemically Functionalized Textile Waste Biochar Anchored Poly(vinylidene fluoride) Adsorbent

Abstract

Preparation of adsorbent materials in powder and polymeric composite form was achieved by controlled carbonization of ZnCl2 pretreated textile waste at low temperatures. Structural and surface properties of carbonized textile waste samples (CTW) and polymeric composites were prepared by the addition of CTW to PVDF-DMF solution at 0, 5, 10, 15, 20, and 30 mass% ratios analyzed by FT-IR, XRD, SEM, and BET analysis. Adsorption performances of powder and composite adsorbents were investigated for MO dye removal from an aqueous solution. Zn-CTW obtained with carbonization of ZnCl2 treated textile waste at 350 °C presented 117.5 mg/g MO removal. Those were higher than CTW-350 and CTW-400. The presence of 1545 cm-1 band at the IR spectrum of Zn-CTW proved the formation of functional groups that increase dye adsorption performance with honeycomb-like pores on the surface. Zn-CTW reflected its properties onto the PVDF matrix. Improved porosity percentage, BET surface, and dye adsorption of Pz20 were recorded as 105.3, 15.22 m2/g, and 41 mg/g, respectively, compared with bare PVDF. Disposal of textile waste and preparation of functional activated carbon were achieved in a low-cost and easy way. Zn-CTW loaded PVDF composites are promising materials to use as a dye removal adsorbent from water or filtration membranes.

Effect of Different Chemicals on the Carbonization Behaviors and Pollution Removal Performance of Biochar Adsorbents Derived From Textile Waste

“…From the spectrums of Fe, H2 and H3-CTW samples, characteristic carbonization peaks pointed out carbonization of cellulosic waste materials had been observed with the bands at around 3400, 1700 and 1090 cm -1 OH, C=O and C-O-C vibrations respectively. The spectrum of non activated CTW-350 and CTW-400 samples could be found in our other study [22]. The band at around 1610 cm -1 was assigned to C=C bond stretching of aromatic ring, and it was observed for all samples [23].…”