Studies on the removal of tetracycline by multi-walled carbon nanotubes

Zhang, Lei; Song, Xiaoyan; Liu, Xueyan; Yang, Lijun; Pan, Fusheng; Lv, Junna

doi:10.1016/j.cej.2011.09.127

Cited by 350 publications

(111 citation statements)

References 35 publications

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“…These results prove the involvement of film diffusion in the adsorption mechanism (Martins et al 2015). Similar results have been obtained by other studies (Martins et al 2015;Zhang et al 2011). Furthermore, Bangham model presumes that the diffusion of MB molecules into the pores of WAC attributes to the rate-controlling step (RahmaniSani et al 2015).…”

Section: Adsorption Mechanismsupporting

confidence: 88%

Adsorption of Methylene Blue by an Efficient Activated Carbon Prepared from Citrullus lanatus Rind: Kinetic, Isotherm, Thermodynamic, and Mechanism Analysis

Üner

Geçgel

Bayrak

2016

Water Air Soil Pollut

107

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By using the activated carbon obtained from Citrullus lanatus rind by zinc chloride activation, methylene blue (MB) removal from aqueous solutions was studied, and the adsorption mechanism was solved through Weber-Morris intraparticle diffusion model, Bangham model, Boyd model, Fourier transform infrared spectra, and scanning electron microscopy. The effects of adsorption parameters (adsorbent concentration, temperature, initial dye concentration, and pH) were investigated. The equilibrium data of MB adsorption were described by applying the Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich isotherm models. The obtained results from adsorption isotherms indicated that Langmuir model is the bestfitted model with the maximum adsorption capacities of 231.48, 243.90, 244.50, and 259.74 mg/g at 25, 35, 45, and 55°C, respectively. The analysis of the kinetic data by pseudo-first-order, pseudo-second-order, and Elovich models displayed that MB adsorption followed pseudo-second-order model. Also, the date obtained from intraparticle diffusion model, Bangham model, and Boyd model presented that intraparticle diffusion, pore diffusion, and film diffusion played significant role in MB adsorption. The thermodynamic studies demonstrated that MB adsorption onto the activated carbon obtained from C. lanatus rind was physical, spontaneous, feasible, and endothermic. Thus, the activated carbon prepared from C. lanatus rind has been an efficient adsorbent for MB removal from an aqueous solution.

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Section: Adsorption Mechanismsupporting

confidence: 88%

Adsorption of Methylene Blue by an Efficient Activated Carbon Prepared from Citrullus lanatus Rind: Kinetic, Isotherm, Thermodynamic, and Mechanism Analysis

Üner

Geçgel

Bayrak

2016

Water Air Soil Pollut

107

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show abstract

“…Multi-walled CNTs can be prepared from single-walled CNTs by using additional chemical processes [92] to increase the contact zone by several times and the amount of active sites for adsorption and enhancing contaminant removal efficiency. However, it has been found that all these features may not necessarily mean improved performance due to molecular sieving effects occurring in MWNTs [58,92,96].…”

Section: Mwnt -Multi-walled Nanotubesmentioning

confidence: 95%

Treatment technologies for emerging contaminants in water: A review

Rodríguez-Narváez

Peralta‐Hernández

Goonetilleke

et al. 2017

Chemical Engineering Journal

885

266

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“…Previous studies have reported high adsorption capacity for organic pollutants including PPCPs. Yang et al, [35] studied the adsorption of norfloxacin on CNTs and Zhang et al, [36] studied the adsorption of tetracycline by CNTs under different conditions.…”

Section: Introductionmentioning

confidence: 99%