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- W200916070 abstract "This research was conducted to study the feasibility of using pineapple (Ananas comosus L. Merryl) peels as biosorbent for the removal of Reactive Orange 16 (RO16) dye. Pineapple is mainly produced as canned fruits and consumed worldwide. During canned fruit and juice processing, pineapple peel is usually discharged and produce waste about 35% of the full fruit. From the points of the view of multipurpose utilization and environmental protection, utilization of pineapple peels is of important significance. Therefore, this study could help in converting these wastes into useful product by investigating its feasibility as biosorbent for dye removal. Pineapple peels was first pretreated with different chemicals to compare its adsorption capability. Following that, batch adsorption by using the most suitable pretreated biosorbent was conducted to investigate the effects of initial dye concentration, adsorbent dosage, and pH of solutions on adsorption performance. The results proved that chemical modification of pineapple peels with sodium hydroxide (NaOH) exhibited the most promising result in removing the RO16 from solution. The batch biosorption test revealed that % of RO16 removal is inversely proportional to initial dye concentration while directly proportional to adsorbent dosage. Not only that, results from this study also indicated that an increase in acidity from pH 7 to pH 1 will also improve the adsorption of RO16 on NaOH-treated pineapple peels. Adsorption isotherms analysis indicates that the adsorption of RO16 onto pretreated pineapple peels exhibit both Langmuir and Freundlich isotherm model characteristic reflecting the presence of more than one kind of adsorbent– adsorbate surface interaction. Three simplified kinetic models namely pseudo-firstorder, pseudo-second-order, and Weber Morris intraparticle diffusion model were used to study kinetic of the adsorption process. Kinetic parameters, rate constants, vii equilibrium sorption capacities, and related correlation coefficients for kinetic models were determined. It was found that the present system of RO16 adsorption on NaOH-treated pineapple peels could be described more favorably by the pseudosecond-order kinetic model, indicating that chemisorptions or an effective electrostatic interaction plays a major role in the adsorption process. Analysis of kinetic data using Weber and Morris intraparticle diffusion model reveals that boundary layer of certain thickness exists in the NaOH-treated pineapple peels and the intraparticle diffusion was not the only rate controlling step. In conclusion, pineapple peels makes a good biosorbent for RO16 dye if pretreated with NaOH and used in adequate dosage. However, the possibility of industrial application requires further research using real wastewater from textile industry and pilot plant study." @default.
- W200916070 created "2016-06-24" @default.
- W200916070 creator A5070788268 @default.
- W200916070 date "2011-05-01" @default.
- W200916070 modified "2023-09-23" @default.
- W200916070 title "Removal of reactive orange 16 (RO16) using chemicallymodified pineapple peels" @default.
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