Affiliation:
1. Universitas Gadjah Mada
Abstract
In the present study, new greener approach of dithizone immobilization on coal bottom ash as a source of silica-alumina materials in alkaline (NaOH) solution has been developed to replace previously used method utilizing more toxic solvents such as toluene, carbon tetrachloride or chloroform. Some parameters influencing the effectiveness of dithizone immobilization including reaction time, concentration of NaOH solution as well as washing procedures were optimized. FTIR (Fourier Transform Infra-Red), XRD (X-Ray Diffraction) and DSC/TGA (Differential Scanning Calorimetry/Thermogravimetric Analysis) analysis were employed to characterize the obtained materials. The adsorbents also tested for the adsorption of Pb(II) ion. Results suggest the use of greener alkaline medium has doubled the effectiveness of dithizone immobilization on the surface of coal bottom ash and hence enhances the capacity and selectivity of adsorbent towards heavy metals.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
Reference21 articles.
1. P. Tundo, P. Anastas, D.S.C. Black, J. Breen, T. Collins, S. Memoli, J. Miyamoto, M. Polyakoff, W. Tumas, Synthetic pathways and processes in green chemistry. Introductory overview, in: Pure Appl. Chem., 2000: p.1207–1228.
2. M. Lancaster, Green Chemistry: An Introductory Text 3rd Edition, Royal Society of Chemistry, (2016).
3. Z. Marczenko, Spectrophotometric Determination of Trace Elements, C R C Crit. Rev. Anal. Chem. 11 (1981) 195–260.
4. L.L.A. Ntoi, B.E. Buitendach, K.G. Von Eschwege, Seven Chromisms Associated with Dithizone, J. Phys. Chem. A. 121 (2017) 9243–9251.
5. K. Ueno, T. Imamura, K.. Cheng, Handbook of Organic Analytical Reagents, in: 2nd ed., CRC Press, London, 1992: p.431.
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献