Carbon-containing bone hydroxyapatite obtained from tuna fish bone with high adsorption performance for Congo red. Issue 43 (22nd May 2017)

• Record Type: Journal Article
• Authors: Peng, Qifan; Yu, Fan; Huang, Bicheng; Huang, Yaqin
• Is Part Of: RSC advances. Volume 7:Issue 43(2017)
• Page Start: 26968
• Page End: 26973
• Publication Date: 2017-05-22
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c6ra27055g
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Carbon-containing nano-hydroxyapatite derived from fish bone was prepared as a high performance adsorbent for water treatment. Abstract : The carbon-containing bone hydroxyapatite (CBHA) has been obtained from tuna fish bone in which the carbon derived from the organics inside the bones acts as a dispersant. The XRD and TEM results indicated that the obtained HA is on the nanoscale and the N2 adsorption/desorption isotherm showed that CBHA has mesoporous structure with an enhanced specific surface area (1129.0 m 2 g −1 ). Moreover, CBHA as an adsorbent for removal of Congo red (CR) from aqueous solution exhibited high adsorption capacity (329.0 mg g −1 ) and the adsorption pattern fitted well with Langmuir model ( R 2 > 0.96). The adsorption kinetics of CBHA for CR followed the pseudo-second-order model. Thermodynamic parameters, including the Gibbs free energy (Δ G ), enthalpy (Δ H ), and entropy (Δ S ), indicated that the adsorption of CR onto CBHA was feasible, spontaneous, and endothermic at the temperature range of 303–323 K. Thus, CBHA as an efficient and low-cost adsorbent can be applied to the treatment of industrial effluents contaminated with CR.