Journal of Food, Agriculture and Environment

Adsorption of Cu (II) ions from industrial wastewater on natural hydroxyapatite extracted from bone ash

Author(s):

R. Bazargan-Lari ^1*, M. E. Bahrololoom ¹, A. Nemati ², Z. Salehi ¹

Recieved Date: 2010-11-26, Accepted Date: 2011-03-20

Abstract:

Wastewaters that contain heavy metals like Cu are dangerous for environment and they can be removed by natural hydroxyapatite (HAP). Natural HAP (N-HAP), extracted from bovine cortical bone ash, is a good choice for substitution of commercial HAP because it is cheaper than commercial HAP and simpler to prepare, too. Several experiments were done to investigate the sorption capacity of Cu (II) to N-HAP in various particle sizes, temperatures, initial concentrations, pH and reaction times. In this study, the sorption of copper ions from a Cu solution onto HAP particles with sizes of 1323.2 and 82.3 nm at three initial pH values of 4.50, 6.00 and 7.50 was studied. The results showed that better performance was obtained through an 82.3 nm particle size and higher pH values. The experimental data were analyzed using Langmuir, Freundlich and Arrhenius equations for equilibrium, kinetic and thermodynamic studies. The analysis showed a maximum adsorption capacity of N-HAP as being 1.631 mmol/g at a pH of 7.5 and small particle size. Kinetically, the prepared N-HAP is a feasible sorbent that retains Cu (II) ions through a favorable and spontaneous sorption process.

Keywords:

Natural hydroxyapatite, heavy metal ions, adsorption, Cu removal, bone ash

---

Journal: Journal of Food, Agriculture and Environment
Year: 2011
Volume: 9
Issue: 2
Category: Environment
Pages: 652-657

---

Full text for Subscribers

---

Information:

Note to users

The requested document is freely available only to subscribers/registered users with an online subscription to the Journal of Food, Agriculture & Environment. If you have set up a personal subscription to this title please enter your user name and password. All abstracts are available for free.

Article purchasing

If you like to purchase this specific document such as article, review or this journal issue, contact us. Specify the title of the article or review, issue, number, volume and date of the publication. Software and compilation, Science & Technology, all rights reserved. Your use of this website details or service is governed by terms of use. Authors are invited to check from time to time news or information.

---

Purchase this Article:   20 Purchase PDF Order Reprints for 15

---

Share this article :