Study of Cadmium Adsorption from Aqueous Solution on Activated Carbon from Sugar Beet Pulp

Özer, Ali; Tanyıldızı, M. Şaban; Tümen, Fikret

doi:10.1080/09593331908616770

Cited by 43 publications

(24 citation statements)

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“…Beet pulp is a complex material basically containing lignin and cellulose as the major constituents. Beet pulp carbon obtained from different methods to use as an adsorbent was studied for removing heavy metals such as copper and chromium ions in earlier works [19,20]. But the studies focusing on organic pollutants adsorption on beet pulp carbon and evaluating equilibrium, kinetic and thermodynamic parameters of the process are very limited.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of phenol from aqueous solution by using carbonised beet pulp

Dursun

Çiçek

Dursun

2005

Journal of Hazardous Materials

174

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Section: Introductionmentioning

confidence: 99%

Adsorption of phenol from aqueous solution by using carbonised beet pulp

Dursun

Çiçek

Dursun

2005

Journal of Hazardous Materials

174

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“…Laszlo and Dintzis [8] have shown that the treatment of sugar beet with epichlorohydrin improved its cation exchange capacity and physical stability. In some attempts, sugar beet pulp has converted into activated carbons and investigated for heavy metals and phenol removal from aqueous solutions [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Copper removal from aqueous solutions by sugar beet pulp treated by NaOH and citric acid

Altundoğan

Arslan

Tümen

2007

Journal of Hazardous Materials

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Sugar beet pulp was converted into effective copper sorption material by treating subsequently with NaOH and citric acid. Compared with the untreated sugar beet pulp, the cation exchange capacity of the modified sugar beet pulp increased from 0.86 to 3.21 mequiv.g(-1). Swelling capacity and COD values of modified sugar beet pulp were found to be decreased in the ratio of 38% and 61%, respectively, compared to the corresponding values of native sugar beet pulp, meaning that modification causes stabilization. Sorption characteristics of the modified sugar beet pulp towards copper ions were studied with batch experiments. Pseudo-first, pseudo-second-order and intraparticle kinetic models were applied to the kinetic data and it was found that the sorption processes followed the pseudo-second-order rate kinetics with activation energy of 16.34 kJ mol(-1). The equilibration data fit best with the Langmuir isotherm the maximum copper sorption capacity of which is 119.43 mgg(-1). The mean free energy of copper sorption process calculated from Dubinin-Radushkevich model and the Polanyi potential concept was found to be in the range of 10.91-11.95 kJ mol(-1) showing that the main mechanism governing the sorption process is ion exchange. The negative values found for enthalpy change (-14.797 kJ mol(-1) over the range of 25-55 degrees C) and free energy change (-19.361 kJ mol(-1) for 25 degrees C) indicate that the sorption process is exothermic and spontaneous in nature.

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“…Sugar beet pulp has a respectable content of cellulose, hemicellulose and lignin, which was suitable for preparation of AC. To our knowledge, some researchers have used sugar beet pulp as starting material to prepare AC and investigated their adsorption properties (Ozer and Tumen 2003;Samadi et al 2009;Demiral and Gündüzoglu 2010;Dursun et al 2013), and few literatures focused on the separation of dyes, but only for heavy metal removal.…”

Section: Introductionmentioning

confidence: 99%

Adsorption kinetic studies for removal of methylene blue using activated carbon prepared from sugar beet pulp

Yan

Liu

et al. 2016

Int. J. Environ. Sci. Technol.

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Sugar beet pulp is an abundant, renewable and low-cost precursor for production of activated carbon. In the present study, sugar beet pulp based activated carbon was prepared by using phosphoric acid as activating agent for adsorption of methylene blue. The conditions of preparation process had a significant influence on the adsorption of methylene blue, and the optimal preparation conditions were obtained as follows: liquid-to-solid ratio of 5, temperature of 450°C and phosphoric acid concentration of 3 mol/L. The properties of sugar beet pulp based activated carbon were characterized by nitrogen adsorption isotherm. The adsorption increases as the increase of contact time, adsorption temperature and pH, and initial concentration of methylene blue. Batch kinetic studies showed that an equilibrium time of 100 min was needed for the adsorption, and the adsorbance of methylene blue is 244.76 mg/g at equilibration. Kinetic models, Weber's pore diffusion model and Boyd's equation were applied to the experimental data to study the mechanism of adsorption and the controlled step. The results showed that the adsorption kinetics followed the pseudosecond-order type kinetic model, intraparticle diffusion was not the rate-limiting mechanism and adsorption process was controlled by film diffusion.

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Study of Cadmium Adsorption from Aqueous Solution on Activated Carbon from Sugar Beet Pulp

Cited by 43 publications

References 0 publications

Adsorption of phenol from aqueous solution by using carbonised beet pulp

Adsorption of phenol from aqueous solution by using carbonised beet pulp

Copper removal from aqueous solutions by sugar beet pulp treated by NaOH and citric acid

Adsorption kinetic studies for removal of methylene blue using activated carbon prepared from sugar beet pulp

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