Modification of Activated Carbon Prepared From Pigeon Pea Husks with Eriochrome Black T for Removal of Copper (II) Ions
Emam Alzahrani, Asst. Prof. of Analytical Chemistry, Chemistry Department, Science Faculty, Taif University Kingdom of Saudi Arabia.
Manuscript received on 20 November 2014 | Revised Manuscript received on 30 November 2014 | Manuscript published on 30 November 2014 | PP: 6-10 | Volume-3 Issue-5, November 2014 | Retrieval Number: E1226113514/2014©BEIESP
Open Access | Ethics and Policies | Cite | Mendeley | Indexing and Abstracting
© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Wastewater pollution due to heavy metals is one of the most important problems facing humanity today. The current study showed a sensitive and effective method for removal of copper (Cu) from aqueous solutions using activated carbon (AC) modified with Eriochrome Black T (EBT). The AC was prepared from pigeon pea husks, since this is an abundant and inexpensive natural resource, using chemical activation with phosphoric acid solution (70%), then physically modified with EBT. Surface properties of the AC-EBT phase were characterised by scanning electron microscopy (SEM) analysis and Fourier transmission infrared (FT-IR) spectroscopy. The high adsorption of AC-EBT is due to the well-developed pores on the fabricated AC-EBT, which lead to high Cu uptake, and the maximum monolayer adsorption capacity of 158.73 mg g-1 after 1 hour contact time. The experimental data fitted well to the Langmuir adsorption isotherm. Results demonstrated that AC-EBT would be a useful and valuable method for controlling water polluted with copper ions.
Keyword: Activated carbon; Copper ion; Eriochrome Black T; Pigeon pea husks.
Scope of the Article: Environmental Engineering