Evaluation of non-viable biomass of Laurencia papillosa for decolorization of dye waste water

Abstract

The uptake of fast orange dye by the red seaweed Laurencia papillosa has been demonstrated in order to explore its potential use as low-cost adsorbent. The adsorption kinetics of fast orange dye on the alga with respect to initial dye concentration, contact time, particle size and pH were investigated. The dye removal percentage increased from 25.92 to 67.08% and the equilibrium states were attained at almost 60 min within the experimental concentration range. The adsorption kinetic was analyzed using pseudo-first-order and pseudo-second-order models. The pseudo-second-order model was more appropriate to describe the sorption kinetics based on the relatively high values of the linear squared regression correlation coefficient. The nature of the possible adsorbent and fast orange interactions was examined by the Fourier transform infrared technique. This technique confirmed that hydroxyl, carboxyl, amine, sulfonyl, carbonyl and alkyl groups are responsible for the dye binding process. Significant increase in dye adsorption was observed with the decrease in sorbent particle size coupled with its large surface area. Maximum removal efficiency was determined to be 65.7% at a solution pH of 5. However, Laurencia papillosa proved to be a promising material for removing fast orange dye from aqueous solutions.

Plant microbe based remediation approaches in dye removal: A review

“…According to certain research, algae species such as S. rhizopus for acid red 247, Chlorella pyrenoidosa for methylene blue, N. muscorum, U. lactuca, Desmodesmus sp, Cosmarium sp, Sargassum sp and Pithophora sp , potential species in degrading azo dyes into aromatic amines, which are then catabolized into simpler nontoxic forms. Several researchers have revealed that algae species use azo dyes as a source of carbon and nitrogen for growth [ 153 ]. C. vulgaris are applied as a natural adsorbent for removing cationic dyes.…”

Application of RSM for Bioremoval of Methylene Blue Dye from Industrial Wastewater onto Sustainable Walnut Shell (Juglans regia) Biomass

“…The protonation and deprotonation of the MB dye as well as the surface of the J. regia shell working as a biosorbent may have contributed to the observed outcome. Dye adsorption on the surface of biomass is regulated by ionic attraction [48]. The electrostatic forces between the MB dyes and the surface charge of J. regia shell particles can adequately explain the differences in adsorption behaviour under different pH values.…”