Adsorption kinetics of polyethylene glycol from aqueous solution onto activated carbon

Chang, Chia‐Yi; Chang, Ching‐Yuan; Höll, Wolfgang H.; Ulmer, Markus; Chen, Yi‐Hung; Groß, Hans-Jügen

doi:10.1016/j.watres.2004.03.001

Cited by 36 publications

(9 citation statements)

References 11 publications

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“…An increase in C o caused a decline in the MEG's percentage removal, achieving the least values of 25.3% for BC and 46.5% for EMBC at C o 150 mg/L. This finding could be because the number of available adsorption sites became generally fully occupied with increasing the amount of adsorbate species (i.e., higher C o ) [6]. On the contrary, the adsorption capacity increased at higher C o due to the enhanced driving force to overcome the resistance of MEG transfer from the solution medium to the surface of the biochar [23].…”

Section: Effect Of Initial Meg Concentration (C O )mentioning

confidence: 96%

“…3a depicted that the values of Q m and K L , respectively, were 6.50 mg/g and 0.04 L/mg for BC and 12.20 mg/g and 0.59 L/mg for EMBC. The higher Q m and K L values implied that EMBC attained better adsorption capabilities compared to BC [6]. The Langmuir constants were then used to estimate the separation factor (R L ), using Eq.…”

Section: Langmuir Isothermmentioning

confidence: 99%

“…Previous studies have attempted to eliminate MEG from aqueous solutions via the adsorption process using activated carbon [6,7] and Zr-metal organic frameworks [5]. These studies have revealed that adsorption would be a promising and cost-effective approach for the treatment of wastewater containing MEG.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of sludge-derived biochar modified with eggshell waste for monoethylene glycol removal from aqueous solutions

et al. 2020

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In this study, the pyrolysis of sewage sludge was employed to prepare a biochar (BC) adsorbent that was modified using eggshell wastes, obtaining eggshell-modified biochar (EMBC). The adsorbent material was used for the removal of monoethylene glycol (MEG) from aqueous solutions under various adsorption conditions. Results showed that the specific surface area of EMBC (i.e., 3.95 m 2 /g) was approximately twofold higher than that of BC, implying that the application of eggshell waste would improve the surface adsorption performance. The optimum adsorption pH value was 7, achieving MEG removal efficiencies of 29.9% for BC and 89.9% for EMBC using adsorbent dosage = 2 g/L, initial MEG concentration = 100 mg/L, and 25 °C within 60 min. The adsorption mechanisms were illustrated regarding XRD, FTIR, and SEM, demonstrating that surface adsorption, pore-filling, precipitation, and complexation contributed to the adsorption process. The adsorption data fitted well to the Langmuir isotherm model with the maximum monolayer adsorption capacity of 12.20 mg/g, implying a reversible physisorption mechanism. Based on a techno-economic feasibility assessment, the preparation of BC and EMBC adsorbents for the treatment of 1 m 3 of wastewater-containing ethylene glycol would require capital costs of 4.80 and 6.50 US$, respectively. The selling of adsorbents and the economic benefit of tertiary treated water showed adequate annual profitability with payback periods of 12.97 and 6.79 years for the BC and EMBC scenarios, respectively. Hence, the study succeeded in preparing efficient and low-cost adsorbents that could be used for the tertiary treatment of petrochemical industrial wastewater containing toxic environmental pollutants.

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Section: Effect Of Initial Meg Concentration (C O )mentioning

confidence: 96%

Section: Langmuir Isothermmentioning

confidence: 99%

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Synthesis of sludge-derived biochar modified with eggshell waste for monoethylene glycol removal from aqueous solutions

et al. 2020

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“…Among these methods, adsorption, in particular, has been intensively studied because of its simplicity, low cost, and high removal efficiency. Therefore, the adsorption process has been extensively used for the elimination of organic substances or heavy metal ions from water and wastewater [7][8][9]. The common adsorbents used in remediation techniques include oxides, hydroxides, activated carbon, porous materials, and nanominerals [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and dye adsorption of ilmenite nanoparticles

Chen

2011

Journal of Non-Crystalline Solids

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“…Thus, the photocatalysis technology has been widely investigated for pollutant eradication [5][6][7], and nano-photocatalysts including nano-TiO 2 [8,9], nano-SrTiO 3 [10,11], and nano-Fe 2 O 3 [12,13] have been intensively studied. Adsorption also is an environmental treatment technology, and the adsorption process has been extensively examined for the elimination of organic substances or heavy metal ions from water and wastewater [14][15][16]. The most common absorbents are porous materials, such as activated carbon, quartz sand, activated alumina, and zeolite.…”

Section: Introductionmentioning

confidence: 99%

Kinetic study on removal of copper(II) using goethite and hematite nano-photocatalysts

Chen

2010

Journal of Colloid and Interface Science

215

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Adsorption kinetics of polyethylene glycol from aqueous solution onto activated carbon

Cited by 36 publications

References 11 publications

Synthesis of sludge-derived biochar modified with eggshell waste for monoethylene glycol removal from aqueous solutions

Synthesis of sludge-derived biochar modified with eggshell waste for monoethylene glycol removal from aqueous solutions

Synthesis, characterization and dye adsorption of ilmenite nanoparticles

Kinetic study on removal of copper(II) using goethite and hematite nano-photocatalysts

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