The adsorption performance of Vat Scarlet R on natural superfine needle down particles

Abstract

Natural superfine needle down particles were successfully prepared on a self‐made machine and applied to remove hazardous dye Vat Scarlet R from aqueous solution. The adsorbent was characterised by scanning electron microscopy and Fourier transform infrared spectroscopy. The effects of contact time, pH, adsorbent dosage, initial dye concentration, and temperature on dye adsorption on natural superfine needle down particles were discussed. Equilibrium adsorption studies revealed that the Langmuir isotherm model gave the best fit to experimental data, which indicates monolayer adsorption on a homogeneous surface. The monolayer adsorption capacity increased with increasing temperature in the range 298–318 K for Vat Scarlet R adsorption, and the maximum obtained adsorption capacity was 76.823 mg g−1 at 318 K. The present study suggested that natural superfine needle down particles could be used as a good and cheaper adsorbent for dye effluent treatment.

Utilization of Waste Leather Powders for Highly Effective Removal of Dyes from Water

“…Powder, a popular and low-cost technology, has been proven to be an effective and economical absorbent for removing dyes from wastewater [8,16,30]. In our previous studies, silk fibroin powder [16], down powder [31,32], and needle down powder [33] were examined in terms of their capacity to remove dyes from dyeing effluents. However, to the best of our knowledge, there have only been a few reported studies on the preparation of leather powder and its applications in dye removal, which is mainly due to its unique structure containing strong hydrogen and ionic bonding, thus making it difficult to grind into fine or superfine powder without high-pressure homogenization or chemical pretreatment.…”