Preparation and characterization of activated carbon from cotton stalk by microwave assisted chemical activation—Application in methylene blue adsorption from aqueous solution

Deng, Hui; Yang, Le; Tao, Guanghui; Dai, Jiulei

doi:10.1016/j.jhazmat.2008.12.080

Cited by 452 publications

(191 citation statements)

References 38 publications

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“…For example, agro-industrial byproducts are promising precursors for the preparation of activated carbon. Utilization of agricultural residues, such as oil palm fiber (Foo and Hameed 2011b), sunflower oil cake (Karagöz et al 2008), cashew nut shell (Kumar et al 2011), cotton stalk (Deng et al 2009), jute fiber (Senthilkumaar et al 2005), dead Posidonia oceanica leaves (Dural et al 2011), and pine wood powder (Wang et al 2009), as precursors for the preparation of activated carbon have been reported in the last few years. The popularity of tea (Camellia sinensis L.) seed oil, which has long been recognized as an edible oil of high quality, has been quickly increasing in the past few years.…”

Section: Introductionmentioning

confidence: 99%

Production of Mesoporous Activated Carbon from Tea Fruit Peel Residues and Its Evaluation of Methylene Blue Removal from Aqueous Solutions

et al. 2013

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Removal of methylene blue by activated carbon produced from tea fruit peel (Camellia sinensis L.) residue using agents ZnCl 2 (AC-1) and H 3 PO 4 (AC-2) was investigated in this work. Mesoporous activated carbons with desirable surface areas and total pore volumes were obtained. Meanwhile, the characteristics of the activated carbon were examined. The effects of solution pH (2 to 10), contact time (0 to 480 min), and adsorbate dosage (0.5 to 3.5 g L -1) were studied. Equilibrium adsorption data were found to be in good agreement with the Langmuir isotherm model. The maximum monolayer adsorption capacities of methylene blue onto activated carbons were 291.5 and 342.5 mg g -1 for AC-1 and AC-2, respectively. The intraparticle diffusion model indicated that intraparticle diffusion was not the sole rate-determining step. The results demonstrated that the easily available tea fruit peel activated carbon is an excellent adsorbent for the removal of methylene blue from aqueous solutions.

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Section: Introductionmentioning

confidence: 99%

Production of Mesoporous Activated Carbon from Tea Fruit Peel Residues and Its Evaluation of Methylene Blue Removal from Aqueous Solutions

et al. 2013

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“…Figure 3 shows that the adsorption ratio increased with increasing amount of adsorbent. This increase in creatinine removal ratio at higher adsorbent dosage could be attributed to the presence of more active sites for the same number of creatinine molecules (Deng et al 2009). Although the adsorption ratio increased with the increase in adsorbent dosage, the adsorption per unit mass decreased as shown in Fig.…”

Section: Influence Of Adsorbent Dosagementioning

confidence: 95%

Adsorption Kinetics and Thermodynamics of Cellulose Dinitrobenzoate Prepared in Ionic Liquid for the Removal Of Creatinine

Dai¹,

Ren²,

Kong³

et al. 2015

BioResources

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Creatinine is one of the major toxins in patients suffering from chronic renal failure. In this paper, cellulose dinitrobenzoate, with a degree of substitution (DS) of 0.15, was used as an oral adsorbent for creatinine adsorption. Cellulose dinitrobenzoate was prepared by modification of cellulose with 3,5-dinitrobenzoyl chloride in 1-butyl-3-methylimidazolium chloride (BMIMCl) ionic liquid as a homogenous medium. The effects of contact time, pH, adsorption temperature, and initial concentration of creatinine on the adsorption per unit mass of cellulose dinitrobenzoate were studied, comparatively. Results showed that the maximum adsorption per unit mass for creatinine was 3.88 mg/g. Furthermore, the adsorption process was spontaneous and exothermic. It was determined that the experimental results were well fitted to the pseudo-second-order rate equation and the Freundlich adsorption isotherm. Compared with traditional oral adsorbents, this cellulose-based adsorbent was biocompatible and could remove creatinine from dialysate effectively.

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“…The band at around 3451 cm −1 can be attributed to -OH stretching vibration (Deng et al, 2009). The peak at 2361 cm −1 is assigned to the C≡C stretching (Foo and Hameed, 2011d).…”

Section: Characterization Of Cbacmentioning

confidence: 99%

Optimization of preparation process of activated carbon from chestnut burs assisted by microwave and pore structural characterization analysis

Yang

et al. 2015

Journal of the Air & Waste Management Association

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In this study, activated carbon was prepared from Chinese chestnut burs assisted by microwave irradiation with potassium hydroxide (KOH) as activator, and the process conditions were optimized employing Box-Behnken design (BBD) and response surface methodology (RSM). The optimized variables were irradiation time, impregnation time, and mass ratio of alkali-tocarbon, and the iodine adsorption value was used to evaluate the adsorption property of activated carbon. The optimal preparation conditions were determined as follows: irradiation time 17 min, impregnation time 240 min, and mass ratio of alkali-to-char 1.5:1. Meanwhile, the relatively high iodine adsorption value (1141.4 mg/g) was also obtained. Furthermore, the pore structural characterization of activated carbon was analyzed. The analyzed results showed a larger Brunauer-Emmett-Teller (BET) specific surface area (1254.5 m 2 /g) and a higher microporosity ratio (87.2%), a bigger total pore volume (0.6565 m 3 /g), but a smaller average pore size (2.093 nm), which demonstrated the obtained activated carbon possessed strong adsorption capacity and well-developed microporous structure. This research could not only establish the foundation of utilizing chestnut burs to prepare activated carbon, but also provide the basis for exploitation of Chinese chestnut by-products.Implications: Because Chinese chestnut burs are the by-products and usually discarded upon harvesting subsequently, the utilization of chestnut burs as a potential source of activated carbon is of great profit to the chestnut processing industries.

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Preparation and characterization of activated carbon from cotton stalk by microwave assisted chemical activation—Application in methylene blue adsorption from aqueous solution

Cited by 452 publications

References 38 publications

Production of Mesoporous Activated Carbon from Tea Fruit Peel Residues and Its Evaluation of Methylene Blue Removal from Aqueous Solutions

Production of Mesoporous Activated Carbon from Tea Fruit Peel Residues and Its Evaluation of Methylene Blue Removal from Aqueous Solutions

Adsorption Kinetics and Thermodynamics of Cellulose Dinitrobenzoate Prepared in Ionic Liquid for the Removal Of Creatinine

Optimization of preparation process of activated carbon from chestnut burs assisted by microwave and pore structural characterization analysis

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