Fixed-Bed Adsorption of Lead from Aqueous Solution Using Chitosan-Coated Bentonite

Futalan, Cybelle M.; Wan, Meng-Wei

doi:10.3390/ijerph19052597

Cited by 15 publications

(14 citation statements)

References 73 publications

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“…This is because a higher bed height would enhance the adsorption capacity since more binding sites and functional groups would be accessible for pollutant molecules to be absorbed by the adsorbent. Furthermore, raising the bed height will provide enough contact time for organic contaminants to be absorbed on the adsorbent surface (Futalan and Wan 2022). A proportional relationship was seen between the Yoon-Nelson constant and bed height.…”

Section: Evaluation Of Kinetic Modelsmentioning

confidence: 91%

Adsorption modelling and fixed-bed column study on milk processing industry wastewater treatment using chitosan zinc-oxide nano-adsorbent–coated sand filter bed

Dinesha

Hiregoudar

Nidoni

et al. 2022

Environ Sci Pollut Res

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The milk processing industry produces a large amount of effluent that contains a lot of organic contaminants. Effluents, if improperly disposed of, can have serious environmental and public health consequences. The goal of this study is to create chitosan-zinc oxide nano-adsorbent coated sand (CZOCS) for getting rid of milk processing industry wastewater (MPIW) in a safe way.The developed adsorbent was characterised, and the presence of a zinc coating on the sand surface was confirmed. The goal of this study was to reduce organic contaminants in MPIW. There has been no evidence of CZOCS being used for industrial wastewater treatment to date. The effectiveness of the adsorbent and the performance of the column were examined using column adsorption experiments. The influence of filtration time and height of the bed on breakthrough curves was also investigated. Different kinds of kinetic models have been used to forecast breakthrough curves employing experimental data. Statistical and error function parameters were used to choose the best model. Among these models, the Thomas model was shown to be the best fit. Breakthrough and exhaustion times were shown to be higher as the bed height increased. The CZOCS has high reusability and could be used for up to six cycles of organic pollutant adsorption.Aside from that, novel CZOCS was used to clean real MPIW, making it one of the most promising adsorbents.

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Section: Evaluation Of Kinetic Modelsmentioning

confidence: 91%

Adsorption modelling and fixed-bed column study on milk processing industry wastewater treatment using chitosan zinc-oxide nano-adsorbent–coated sand filter bed

Dinesha

Hiregoudar

Nidoni

et al. 2022

Environ Sci Pollut Res

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show abstract

“…Furthermore, it was observed from these results that the earlier the breakthrough occurred, the higher the initial solution concentration. Futalan and Wan [27] observed the same behavior, noting that increased bed height resulted in more time for breaking through and exhaustion. Nevertheless, the fixed-bed system achieved a breakthrough and was depleted more rapidly as the initial concentration increased.…”

Section: Comparison Of Prediction and Experimental Data Of Axial Disp...mentioning

confidence: 60%

A Mathematical Simulation of Copper and Nickel Ions Separation Using Prepared Nanocellulose Material

Aljlil

2023

Membranes

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Environmental risks can arise from the existence of heavy metals in wastewater and their land disposal. To address this concern, a mathematical technique is introduced in this article that enables the anticipation of breakthrough curves and the imitation of copper and nickel ion separation onto nanocellulose in a fixed-bed system. The mathematical model is based on mass balances for copper and nickel and partial differential equations for pore diffusion in a fixed bed. The study evaluates the impact of experimental parameters such as bed height and initial concentration on the shape of the breakthrough curves. At 20 °C, the maximum adsorption capacities for copper and nickel ions on nanocellulose were 5.7 mg/g and 5 mg/g, respectively. The breakthrough point decreased with increasing solution concentration at higher bed heights, while at an initial concentration of 20 mg/L, the breakthrough point increased with bed height. The fixed-bed pore diffusion model showed excellent agreement with the experimental data. The use of this mathematical approach can help alleviate the environmental hazards that arise from the presence of heavy metals in wastewater. The study highlights the potential of nanocellulose as a material for membrane technology, which can effectively address these risks.

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“…As one of the diazo class dyes, the form of the Congo red dye molecule in the aqueous solution will be affected by the pH value. As mentioned in [12,13], the color of Congo red dye changed significantly from red to dark blue when the pH of the solution was reduced to 2. On the other hand, when the pH of Congo red dye solution was adjusted to be more than 10, its color was different from the original.…”

Section: Fig 3 Ft-ir Spectra Of Pumice Modified With Chitosan ( --Pum...mentioning

confidence: 84%

Anionic Dye Removal from Aqueous Solution Using Chitosan Modified Irind Mine Pumice

Kalantaryan

Abrahamyan²,

Hoveyan

2022

jaer

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In this paper, the adsorption of Congo red dye from an aqueous solution using chitosan-coated pumice (CCP) has been studied. The abundant natural pumice from Irind mine (Republic of Armenia) was successfully activated by an acid activation method and modified with chitosan. The adsorbent was applied as a low-cost, and environmentally-friendly adsorbent for Congo red dye removal from aqueous solution. The modified pumice samples were characterized by Fourier-transform infrared spectroscopy (FT-IR). To study the adsorption behavior of Congo red dye on modified pumice, the batch adsorption method was used. The effects of operating parameters on Congo red dye adsorption on modified pumice were examined, including adsorbent dose, pH, contact time, and starting concentration. Solutions of Congo red dye concentrations before and after adsorption were measured by UV-Vis Spectrophotometer (Cary-60). The wavelength of 3.799 nm-1 corresponds to the dye's maximum absorbance, and the obtained spectra revealed that no peak was found above the threshold after modifications.

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Fixed-Bed Adsorption of Lead from Aqueous Solution Using Chitosan-Coated Bentonite

Cited by 15 publications

References 73 publications

Adsorption modelling and fixed-bed column study on milk processing industry wastewater treatment using chitosan zinc-oxide nano-adsorbent–coated sand filter bed

Adsorption modelling and fixed-bed column study on milk processing industry wastewater treatment using chitosan zinc-oxide nano-adsorbent–coated sand filter bed

A Mathematical Simulation of Copper and Nickel Ions Separation Using Prepared Nanocellulose Material

Anionic Dye Removal from Aqueous Solution Using Chitosan Modified Irind Mine Pumice

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