This research aims to investigate the removal of trypan blue dye from aqueous solutions by employing ground avocado seeds powder, a low-cost biowaste adsorbent (biosorbent), under various experimental conditions. The effect of contact time, initial dye concentration, and adsorbent dose on dye removal were studied. The experimental kinetic data were fitted to pseudo-first order and pseudo-second-order kinetic models. Results imply that adsorption of trypan blue on the avocado seed adsorbent nicely followed the pseudo-second-order kinetic model. Equilibrium isotherms were analyzed by Langmuir and Freundlich isotherms, where Langmuir isotherm described the isotherm data with a high-correlation coefficient (R2=0.9948) closer to unity, and maximum adsorption capacity was found to be 19.3 mg g−1. The present study results substantiate that ground avocado seeds are a promising adsorbent for the removal of the dye trypan blue from industrial wastewater.
T. T. El-Idreesy et al., "Equilibrium And Kinetic Study On The Biosorption Of Trypan Blue From Aqueous Solutions Using Avocado Seed Powder," Biointerface Research in Applied Chemistry, vol. 11, no. 3, pp. 11042 - 11053, BioInterface Research in Applied Chemistry, Jan 2021.
The definitive version is available at https://doi.org/10.33263/BRIAC113.1104211053
Chemical and Biochemical Engineering
Keywords and Phrases
Biosorbent; Dye removal; Kinetic models; Pollution; Wastewater treatment
International Standard Serial Number (ISSN)
Article - Journal
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01 Jan 2021