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Optimization Of Basic And Reactive Dye Uptakes In Binary Dye Solution Using Statistical Experimental Methodology, Siew-Teng Ong, Weng-Nam Lee, Pei-Sin Keng, Siew-Ling Lee, Yung-Tse Hung
Optimization Of Basic And Reactive Dye Uptakes In Binary Dye Solution Using Statistical Experimental Methodology, Siew-Teng Ong, Weng-Nam Lee, Pei-Sin Keng, Siew-Ling Lee, Yung-Tse Hung
Civil and Environmental Engineering Faculty Publications
In the present study, the optimum adsorption conditions for the uptake of methylene blue (MB) and reactive orange 16 (RO16) in binary dye solution by ethylenediamine tetraacidic acid (EDTA) modified rice hulls was studied. By using the Plackett-Burman design, the significant variables in affecting the MB and RO16 uptake in binary dye solution were identified as pH and contact time. The combined effects of interaction between the variables were determined using response surface methodology (RSM). The model predicted that at optimum conditions: pH 6.77 and contact time of 205.58 min, the MB uptake greater than 95% could be obtained. As …
Equilibrium Studies For The Removal Of Basic Dye By Sunflower Seed Husk (Helianthus Annuus), Siew-Teng Ong, Pei-Sin Keng, Siew-Ling Lee, Ming-How Leong, Yung-Tse Hung
Equilibrium Studies For The Removal Of Basic Dye By Sunflower Seed Husk (Helianthus Annuus), Siew-Teng Ong, Pei-Sin Keng, Siew-Ling Lee, Ming-How Leong, Yung-Tse Hung
Civil and Environmental Engineering Faculty Publications
The sorption characteristics of sunflower (Helianthus annuus) seed husk (SSH) to remove Methylene Blue (MB) from aqueous solution under batch conditions have been investigated. Sorption of MB was found to be pH, concentration and agitation dependent. The kinetics of sorption was rapid with 80% sorption taking place within the first 60 min regardless of its initial concentration. The fast attainment of equilibrium implying the biosorbent could be suitable for continuous flow system. Using the pseudosecond order kinetics model, the predictive model for MB sorbed at time t (qt) with the initial concentration of (Co) is given by qt = Cot/[0.0607Co …
Equilibrium Studies And Kinetics Mechanism For The Removal Of Basic And Reactive Dyes In Both Single And Binary Systems Using Edta Modified Rice Husk, Siew-Teng Ong, Weng-Nam Lee, Pei-Sin Keng, Yung-Tse Hung, Sie-Tiong Ha
Equilibrium Studies And Kinetics Mechanism For The Removal Of Basic And Reactive Dyes In Both Single And Binary Systems Using Edta Modified Rice Husk, Siew-Teng Ong, Weng-Nam Lee, Pei-Sin Keng, Yung-Tse Hung, Sie-Tiong Ha
Civil and Environmental Engineering Faculty Publications
The potential of using ethylenediamine tetraacetic acid modified rice husk (ERH) to remove different types of dyes, namely basic and reactive dyes were studied. Sorption characteristic of ERH showed that it was pH dependent. The kinetics of sorption for both dyes was rapid within the first 60 min regardless of its initial concentration. Using the pseudo-second order kinetics model, the predicted uptakes of Methylene Blue (MB) and Reactive Orange 16 (RO16) agreed closely with experimental values obtained. Three isotherm models were used to fit with equilibrium data, namely Langmuir, Freundlich and BET models. It was found that the equilibrium fitted …
Tartaric Acid Modified Rice Hull As A Sorbent For Methylene Blue Removal, Siew Teng Ong, Pei Sin Keng, Ai Wen Chong, Siew Ling Lee, Yung Tse Hung
Tartaric Acid Modified Rice Hull As A Sorbent For Methylene Blue Removal, Siew Teng Ong, Pei Sin Keng, Ai Wen Chong, Siew Ling Lee, Yung Tse Hung
Civil and Environmental Engineering Faculty Publications
Problem statement: Improper dye discharge from various industries such as textile, paper, cosmetic and plastics into receiving streams can be one of the sources towards water pollution. The release of these effluents not only causes various disruptions in the ecosystems, but also poses hazard effect as most of the dyes are highly toxic, mutagenic and carcinogenic in nature. Approach: To prepare an inexpensive and efficient sorbent by chemically modifying rice hull for the removal of Methylene Blue (MB) which is predominantly used in coloring acrylic fiber. Batch experiments were carried out for the removal of MB from aqueous solution by …