Affiliation:
1. Universitas Gadjah Mada
2. Gadjah Mada University
Abstract
The kinetic and isotherm study on the adsorption of crystal violet (CV) on coal fly ash (CFA) has been studied. Before being used as an adsorbent, CFA was characterized with AAS, XRF, FT-IR, and XRD to determine the mineral components in CFA. The adsorption study of crystal violet in water with CFA includes the effects of solution pH, mass adsorbent, crystal violet concentration, and contact time on the adsorption process. The pseudo-second-order kinetic model best expressed the crystal violet adsorption behavior on CFA with the rate constant (k) of 1.24×10-1 g mg-1 min-1. The Langmuir isotherm model was found to be the best model to describe the adsorption, with a maximum adsorption capacity of 10.14 mg g-1 at room temperature. Based on the value of adsorption energy as well as the best isotherm model, the adsorption of CV on CFA forms a monolayer and can be classified as chemisorption.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
Reference31 articles.
1. Air pollution from industrial waste gas emissions is associated with cancer incidences in Shanghai, China;Cong;Environmental Science and Pollution Research,2018
2. M. Fayazi, M.A. Taher, D. Afzali, A. Mostafani, Enhanced fenton like degradation of methylene blue by magnetically activated carbon/hydrogen peroxide with hydroxylamine as fenton enhancer, J. Mol. Liq. 216 (2016) 751-787.
3. R.R. Alcantara, R.O.R. Muniz, D.A. Fungaro, Full factorial experimental design analysis of rhodamine b removal from water using organozeolite from coal bottom Ash, Int J. Energy Environ. 7 (2016) 357-374.
4. A comprehensive review on the applications of coal fly ash;Yao;Earth-Science Reviews
5. Coal-derived unburned carbons in fly ash: A review;Hower;International Journal of Coal Geology