Utilization of Corn Cob and TiO2 Photocatalyst Thin Films for Dyes Removal

Ong, Siew Teng; Gan, Hui Yee; Leow, Li Eau

doi:10.17344/acsi.2016.2983

Cited by 10 publications

(9 citation statements)

References 28 publications

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“…The experimental uptake apparently did not deviate much from the predicted uptake, and the differences were within a narrow range of 0.46%-8.5%, which is most likely due to the nonnegligible effect of insignificant variables in the design. 7,19,38 It thus appeared that this program can be used in studying different influential variables in affecting the dye uptake adsorption process. Some of the previously reported works have also demonstrated the usefulness of using this program in identifying significant factors for dye uptake.…”

Section: Statistical Analysis -Plackett-burmanmentioning

confidence: 99%

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Effective removal of Reactive Brown 10 from aqueous solution by using chitosan beads: Batch and experimental design studies

Chung

Ong

2021

JPS

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Application of chitosan bead as a low-cost adsorbent for removing Reactive Brown 10 (RB 10) from aqueous solution was investigated. The presence of -NH 2 and -OH functional groups on chitosan beads were evident from the Fourier transform infrared (FTIR) spectrum. The changes on the surface morphology of the chitosan beads before and after sorption were analysed. Dye sorption was found higher with a longer contact time, lower dye concentration and greater adsorbent dosage. The optimum pH and adsorbent dosage for the adsorption of RB10 were pH 4-6 and 0.04 g, respectively. Both Langmuir and Brunauer, Emmett and Teller (BET) isotherm were determined as the appropriate model to describe the behaviour of the adsorption process. The maximum adsorption capacity was about 22 mg g -1 . The significant variables in affecting the RB 10 uptake was identified using the Plackett-Burman (PB) program.

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Section: Statistical Analysis -Plackett-burmanmentioning

confidence: 99%

“…Some of the previously reported works have also demonstrated the usefulness of using this program in identifying significant factors for dye uptake. 7,38,39…”

Section: Statistical Analysis -Plackett-burmanmentioning

confidence: 99%

Effective removal of Reactive Brown 10 from aqueous solution by using chitosan beads: Batch and experimental design studies

Chung

Ong

2021

JPS

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“…This agreed well with some of the previous findings in the adsorption process involving dyes. 13,14 Figure 1: FTIR spectrum of GLP before adsorption (blue) and GLP after adsorption (black).…”

Section: Plackett-burman Designmentioning

confidence: 99%

“…Similar findings have been reported by a number of studies whereby the uptake of adsorbate molecules are more pH and contact time dependent. 14,24,25 If the movement of the adsorbate molecules from the bulk liquid to the liquid film surrounding the adsorbent is ignored, the adsorption process onto a solid can be separated into three stages, as highlighted in the previous section. The occurrence of these three important phases resulted in contact time being one of controlling parameters in CIP uptake.…”

Section: Plackett-burman Designmentioning

confidence: 99%

Guava Leaves as Adsorbent for the Removal of Emerging Pollutant: Ciprofloxacin from Aqueous Solution

Tay¹,

Ong²

2019

JPS

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In this work, the feasibility of using guava leaves powder (GLP) as an adsorbent to remove ciprofloxacin (CIP) from aqueous solution was investigated. The effectiveness of GLP to remove CIP was studied under different experimental conditions. The optimum pH for the adsorption of CIP was found to be pH 4. The adsorption trend was rapid at the initial stage and equilibrium was achieved in 60 min. The percentage uptake of CIP decreased with increasing initial CIP concentration. The adsorption kinetics was found to conform well to the pseudo-second order kinetic model. Characterisation of GLP was carried out by using field emission scanning electron microscopy (FESEM), atomic force microscopy (AFM) and Fourier-transform infrared (FTIR) spectrophotometry. Both Langmuir and Freundlich isotherm models were applied to describe the equilibrium adsorption data of CIP onto GLP. The maximum adsorption capacity (q m) was found to be 232.56 mg g-1. By applying Plackett-Burman design, contact time and pH were found to be the influential parameters in affecting the uptake of CIP onto GLP.

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“…Since dyes are considered as one of the severe environmental pollutants, a large number of studies were opened to minimize their impact on human health and the environment. [1][2][3][4][5][6] Advanced oxidation processes (AOPs) are among the most accepted treatment methods for removal of dyes and pigments. The generation of highly reactive species is the key factor for effective decomposition of organic pollutants through AOPs.…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study on a Cationic Dye Removal through Homogeneous and Heterogeneous Fenton Oxidation Systems

Bayrami

Shafeeyan

Raman

et al. 2018

ACSi

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Oxidative treatment of a cationic dye solution, methylene blue, was investigated using magnetite nanoparticles and goethite in heterogeneous Fenton-like reaction, and ferrous ions in homogeneous Fenton-reaction. The aim was to compare the degradation efficiencies of the studied catalysts for decolorization of methylene blue solution as the model organic pollutant. Response surface methodology (RSM) was applied to determine the optimal operational conditions for magnetite/H 2 O 2 and goethite/H 2 O 2 systems. The [H 2 O 2 ] of 0.2 M, catalyst dosage of 1 g/L, pH 9.0 and reaction time of 5h were chosen by RSM. The pH value of 3.0 was used in the case of Fe +2 /H 2 O 2 system. The experimental results showed that homogeneous Fenton oxidation system was the most effective system under both acidic and neutral conditions but decreased at pH value of 9.0 due to the decrease in available Fe 2+ ions in the solution and generation of ferric hydroxide sludge. Fe 3 O 4 /H 2 O 2 system represented better removal efficiency than FeO(OH)/H 2 O 2 system that could be attributed to the presence of Fe II cations in magnetite structure and its larger surface area.

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Utilization of Corn Cob and TiO2 Photocatalyst Thin Films for Dyes Removal

Cited by 10 publications

References 28 publications

Effective removal of Reactive Brown 10 from aqueous solution by using chitosan beads: Batch and experimental design studies

Effective removal of Reactive Brown 10 from aqueous solution by using chitosan beads: Batch and experimental design studies

Guava Leaves as Adsorbent for the Removal of Emerging Pollutant: Ciprofloxacin from Aqueous Solution

A Comparative Study on a Cationic Dye Removal through Homogeneous and Heterogeneous Fenton Oxidation Systems

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