Desorption of dye from activated carbon beds: effects of temperature, pH, and alcohol

Chern, Jia‐Ming; Wu, Chia-Yuan

doi:10.1016/s0043-1354(01)00127-0

Cited by 157 publications

(75 citation statements)

References 13 publications

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“…The higher pH of the solution shows more efficiency in desorption of procion red MX-5B dye. The surface properties of alumina and the functional groups on the adsorbent are affected by pH solution [12,15,24]. The alumina has a point of zero charge (pHpzc) of 7.4.…”

Section: Effect Of Desorption Agentsmentioning

confidence: 99%

“…Each dye compounds had different optimum temperature of desorption, i.e. methylene blue was desorbed optimally by ethanol at 25 °C [28], reactive blue BF-5G through optimal desorption at 30 °C using isopropyl alcohol [11], reactive red gave optimum desorption from carbon nanotubes at 48 °C using NaOH [6], the yellow and red dyes were desorbed optimally from activated carbon using alcohol 20% at 40 and 50 °C [12].…”

Section: Effect Of Temperature Of Desorptionmentioning

confidence: 99%

“…Kinetic desorption In the present study expressed by a pseudofirst order rate equation as represented as eq. 3 [12,26].…”

Section: Kinetic Of Desorptionmentioning

confidence: 99%

“…Commonly used desorption agents in this process are methanol, ethanol, isopropanol, acid and base solution, NaCl, HNO3, Fenton, and H2O2 which depend on the type of adsorbate and adsorbent. Other studies stated that temperature process and contact time also affect the desorption efficiency [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

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Desorption and Re-Adsorption of Procion Red MX-5B Dye on Alumina-Activated Carbon Composite

et al. 2018

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The alumina-activated carbon has the ability to adsorb and desorb the procion red MX-5B. The research evaluated the influence of desorption agent, contact time, and temperature on desorption process of procion red MX-5B dye with alumina-activated carbon composite and the adsorption capacity of the composite after desorption process. The desorption agents used in desorption process were solution with pH 2−10, H2O2 30 % (v/v), methanol 70% (v/v) and ethanol 70% (v/v) 2-10, H2O2 30% (v/v), metanol 70% (v/v) dan etanol 70% (v/v) desorpsi, adsorpsi ABSTRAK Komposit alumina-karbon aktif mempunyai kemampuan mengadsorpsi dan mendesorpsi zat warna procion merah MX-5B. Penelitian ini mempelajari pengaruh reagen pendesorpsi, waktu kontak, dan suhu pada proses desorpsi zat warna procion merah MX-5B dari komposit alumina-karbon aktif dan kemampuan adsorpsi komposit alumina-karbon aktif setelah proses desorpsi. Reagen pendesorpsi yang digunakan pada proses desorpsi meliputi larutan dengan pH pada interval

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Section: Effect Of Desorption Agentsmentioning

confidence: 99%

Section: Effect Of Temperature Of Desorptionmentioning

confidence: 99%

“…Kinetic desorption In the present study expressed by a pseudofirst order rate equation as represented as eq. 3 [12,26].…”

Section: Kinetic Of Desorptionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Desorption and Re-Adsorption of Procion Red MX-5B Dye on Alumina-Activated Carbon Composite

et al. 2018

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“…If the Langmuir model is still used despite the occurrence of solute-solute interactions, then substantial error will be introduced into the calculated value of ΔG °a ds . [16][17][18][19][20][21][22] To address both of these problems, we have adapted our analytical model to enable bulk-shift contributions to be directly determined from the raw SPR signal versus solution concentration plots for each individual peptide-surface system and to enable the effects of solute-solute interactions on the isotherm shape to be minimized so that ΔG °a ds can be accurately determined from the resulting adsorption data.…”

Section: Iia Key Issuesmentioning

confidence: 99%

Determination of the Adsorption Free Energy for Peptide−Surface Interactions by SPR Spectroscopy

2008

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To understand and predict protein adsorption behavior, we must first understand the fundamental interactions between the functional groups presented by the amino acid residues making up a protein and the functional groups presented by the surface. Limited quantitative information is available, however, on these types of submolecular interactions. The objective of this study was therefore to develop a reliable method to determine the standard state adsorption free energy (ΔG°a ds ) of amino acid residue-surface interactions using surface plasma resonance (SPR) spectroscopy. Two problems are commonly encountered when using SPR for peptide adsorption studies: the need to account for "bulk-shift" effects and the influence of peptide-peptide interactions at the surface. Bulk-shift effects represent the contribution of the bulk solute concentration to the SPR response that occurs in addition to the response due to adsorption. Peptide-peptide interactions, which are assumed to be zero for Langmuir adsorption, can greatly skew the isotherm shape and result in erroneous calculated values of ΔG°a ds . To address these issues, we have developed a new approach for the determination of ΔG°a ds using SPR that is based on the chemical potential. In this article, we present the development of this new approach and its application for the calculation of ΔG°a ds for a set of peptide-surface systems where the peptide has a host-guest amino acid sequence of TGTG-X-GTGT (where G and T are glycine and threonine residues and X represents a variable residue) and the surface consists of alkanethiol self-assembled monolayers (SAMs) with methyl (CH 3 ) and hydroxyl (OH) functionality. This new approach enables bulk-shift effects to be directly determined from the raw SPR versus peptide concentration data plots and the influence of peptide-peptide interaction effects to be minimized, thus providing a very straightforward and accurate method for the determination of ΔG °a ds for peptide adsorption. Further studies are underway to characterize ΔG°a ds for a large library of peptide-SAM combinations.

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Ion‐Exchange Equilibria of Nitrates on a Strongly Basic Resin

Chabani¹,

Akhrib²,

Ouaissa³

et al. 2011

Chem Eng & Technol

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Adsorption isotherms of nitrates on the resin Amberlite IRA 410 at various pH values (6.8-12) were experimentally determined by batch tests. Six models involving two or three parameters are discussed. Concerning the Langmuir equation, the linear method had no significant effect on the estimation of isotherm parameters and simulation precision. Irrespective of the pH, the Sips model was found to give the best fit of the adsorption isotherm data. The maximum adsorption capacity decreased with increasing pH values and could be predicted by the correlation equations obtained in this study.

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Desorption of dye from activated carbon beds: effects of temperature, pH, and alcohol

Cited by 157 publications

References 13 publications

Desorption and Re-Adsorption of Procion Red MX-5B Dye on Alumina-Activated Carbon Composite

Desorption and Re-Adsorption of Procion Red MX-5B Dye on Alumina-Activated Carbon Composite

Determination of the Adsorption Free Energy for Peptide−Surface Interactions by SPR Spectroscopy

Ion‐Exchange Equilibria of Nitrates on a Strongly Basic Resin

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