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

• Published in: Environmental technology Vol. 19; no. 11; pp. 1119 - 1125
• Main Authors: Özer, A., Tanyildizi, M. S., Tümen, F.
• Format: Journal Article
• Language: English
• Published: London Taylor & Francis Group 01.11.1998; Selper
• Subjects: Adsorbents; adsorption; adsorption isotherm; Agronomy. Soil science and plant productions; Applied sciences; Biological and medical sciences; Cadmium removal; carbonization; Chemistry; Exact sciences and technology; Fundamental and applied biological sciences. Psychology; General agronomy. Plant production; General and physical chemistry; Industrial wastewaters; Pollution; sugar beet pulp; Surface physical chemistry; Use of agricultural and forest wastes. Biomass use, bioconversion; Wastewaters; Water treatment and pollution; Inorganic adsorbate; Carbon dioxide; Adsorption isotherm; Adsorption capacity; Activation; Raw materials; Carbonization; Upgrading; Activated carbon; Agricultural waste; Cadmium; Liquid solid adsorption; Transition metal; Inorganic adsorbent; Experimental study; Free energy; Vegetal waste; Heavy metal; Industrial waste water; Preparation; Waste reuse; Sugar beet pulp; Physicochemical purification; Aqueous solution; Waste water purification; Performance; Thermodynamic properties
• ISSN: 0959-3330; 1479-487X
• DOI: 10.1080/09593331908616770

The adsorption ability of activated carbons from sugar beet pulp to remove the cadmium from aqueous solutions has been investigated. Optimum temperature and time for carbonization of sugar beet pulp were determined as 700 °C and 120 min. The results of adsorption experiments show that pH for effective removal of cadmium was 6.3 or greater. The maximum removal percentage of cadmium were found to be 99.0, 78.2 and 57.0 by using 2.5 g l −1 adsorbent dosage for initial cadmium concentration of 100, 250 and 500 mg l −1 , respectively, at optimum pH and 20 °C for a contact time of 120 min. Langmuir and Freundlich adsorption models were applied to the isotherm data. The free energy change of process was found to be −18.03 Kj mol −1 .