Dyes removal using activated carbon from palm oil waste with digital image colorimetry quantification

Firdaus, M. Lutfi; Puspita, M.Eng Ir. Niniek Fajar; Alwi, Wiwit; Ghufira,; Nurhamidah,; Elvia, Rina

doi:10.1063/1.5011923

Cited by 2 publications

(2 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The influence of exposure time on dyes decolorization was carried out from a short time to several hours. The sample was then taken, filtered and measured the absorbance with a UV-visible spectrophotometer (Bio-Spectrometer, Eppendorf) on the wavelength range of 400-700 nm [7][8] .…”

Section: Experimental Materials and Methodsmentioning

confidence: 99%

“…Physical or chemical activation is needed to produce activated carbon. In general, the chemicals preferred over physical activation due to the shorter time needed and lower temperatures for activating the raw materials [7][8][9][10] . This report describes the dyes adsorption onto activated carbon made from oil palm waste including its isotherms, kinetics, and thermodynamics adsorption parameters.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Isotherm, Kinetics and Thermodynamics of Synthetic Dyes Adsorption Onto Activated Charcoal Made From Oil Palm Midrib

Firdaus¹,

Susanti²,

Ghufira³

et al. 2018

RJC

Self Cite

View full text Add to dashboard Cite

In this report, we prepared activated charcoal from oil palm midrib and used it as an adsorbent to decolorizeReactive Red and Direct Green as synthetic dyes in the sample solution. The response of various experiments conditions, such as contact time, solution pH, temperature, the weight of adsorbent, and concentration of dyes, on adsorption of synthetic dyes, were evaluated along with the analysis of isotherms, kinetics, and thermodynamics adsorption parameters. At equilibrium, adsorption of dyes onto activated charcoal fitted well to Freundlich model giving coefficients of correlation R 2 ≥ 0.9. At optimum conditions, capacities of adsorption for Reactive Red 120 and Direct Green 26 were 151 and 116 mg/g, respectively. The kinetics study suggested that dyes adsorption onto activated charcoal followed the model of pseudo-second-order with thermodynamic parameters of ∆G°, ∆H°, and ∆S° were -0.21 to -3.93 kJ/mol, -30.15 to -36.12 kJ/mol, and 0.003 J/mol.K, respectively. Based on the experiments, we conclude that dyes adsorption was exothermic, spontaneous and an increase in the system entropy. The results of FT-IR analysis indicated the involvement of various functional groups, including hydroxyl and amine groups. This study emphasizes the potential of oil palm waste as an alternative low-cost adsorbent for the removal of dyes.

show abstract

Section: Experimental Materials and Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Isotherm, Kinetics and Thermodynamics of Synthetic Dyes Adsorption Onto Activated Charcoal Made From Oil Palm Midrib

Firdaus¹,

Susanti²,

Ghufira³

et al. 2018

RJC

Self Cite

View full text Add to dashboard Cite

show abstract

Smartphone Coupled with a Paper-Based Colorimetric Device for Sensitive and Portable Mercury Ion Sensing

et al. 2019

Self Cite

View full text Add to dashboard Cite

The rapid development of information and communication technology provides an opportunity for scientists to develop a quantitative analytical method that is built on a mobile gadget as a detector. In this paper, we report a low-cost, simple and portable analytical method for mercury ion quantification based on digital image colorimetry coupled with a smartphone application. A small amount of silver nanoparticles (AgNPs) was used as a colorimetric agent that is selective only to mercury ions. The yellowish brown color of AgNPs instantly changed to colorless after the addition of mercury ions due to a redox reaction. To increase the portability, we attached the AgNPs onto a medium to create a paper-based analytical device. The final data processing of the colorimetric analysis was conducted using an android application available on the Google Play Store, called "Mercury Detector". The proposed method has good sensitivity, with a detection limit of 0.86 ppb, which is comparable to those of bulk and more expensive instruments. This allows for the detection of mercury ions as low as 2 ppb (10 nM), which is also the maximum contaminant level permitted in drinking water by the US Environmental Protection Agency. The proposed method was applied to real samples that provide satisfactory results on accuracy (2.4%) and precision (2.5%).

show abstract

Dyes removal using activated carbon from palm oil waste with digital image colorimetry quantification

Cited by 2 publications

References 12 publications

Isotherm, Kinetics and Thermodynamics of Synthetic Dyes Adsorption Onto Activated Charcoal Made From Oil Palm Midrib

Isotherm, Kinetics and Thermodynamics of Synthetic Dyes Adsorption Onto Activated Charcoal Made From Oil Palm Midrib

Smartphone Coupled with a Paper-Based Colorimetric Device for Sensitive and Portable Mercury Ion Sensing

Contact Info

Product

Resources

About