Dyes Removal from Wastewater Using Agricultural Waste

TLDR: In this article, the ability of Rice Husk (RH) on the removal of four types of dyes pollutant from wastewater which were methylene blue, Congo red, brilliant green and crystal violent using different design parameters by adsorption process is focus on.

Abstract: Capability of Rice Husk (RH) on the removal of four types of dyes pollutant from wastewater which were methylene blue, Congo red, brilliant green and crystal violent using different design parameters by adsorption process is focus on. The design parameters studied to adsorb above four dyes using RH as an adsorbent material were initial concentration of dye, absorbance material packing height which was RH, pH of dye solution feed inlet, treatment time, feed flow rate and feed temperature, these parameters were varied from (1-100) mg/l, (10100) cm, (1-8), (1-60) min, (5-100) ml/min and (20–55°C) respectively. Results show that the higher removal efficiency was (95.81, 93.44, 96.62 and 96.35) % for brilliant green, Congo red, crystal violent and methylene blue dyes respectively from aquatic solution and these efficiencies were decreased with increasing of initial concentration and flow rate while the removal efficiencies increased with increasing absorbance material bed height and feeding temperature. The removal efficiency was increased with increasing pH of solution for methylene blue, brilliant green and crystal violent dyes and decreased with increasing pH of solution for Congo red dye. Statistical model is achieved to find an expression combined all operating parameters with the removal efficiency for dyes used in this paper in a general equation. By this way we can possess different benefits which are: remove the toxic dyes contaminated the water, get rid of agricultural waste RH.