Journal
JOURNAL OF WATER PROCESS ENGINEERING
Volume 34, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jwpe.2020.101155
Keywords
Paintosorp (TM); Lifespan; Dye; adsorption/desorption isotherm; Kinetic model; Re-generation
Funding
- Fundamental Research Grant Scheme, FRGS [203/PJKIMIA/6071253]
- Research University Grant, RUI [1001/PJKIMIA/814269]
Ask authors/readers for more resources
Re-usability of exhausted or spent adsorbent in water treatment plant is became a complicated issue. In this regard, exhausted bentonite adsorbent has been employed for desorption/regeneration using combined effect of heating and solvent regeneration method. Exhausted adsorbent has been characterized using FTIR, and SEM analyses. The results of regeneration study reveal effective desorption of methylene blue (MB) dye up to seven successive cycles. Among different solvents (aqueous solution of hydrochloric acid, ethanol, acetone, propanol, nitric acid, water, NaCl and NaOH), significant desorption of MB (70 %) was achieved using aqueous HCl solution. To optimized maximum desorption of MB, different physico-chemical parameters such as temperature, initial dye concentration, contact time and lifespan of adsorbent have been studied. In addition, desorption isotherm and desorption kinetics were also found to be fitted with Sips isotherm (R-2 = 0.995) and second-order kinetics models (R-2 = 0.990), respectively. Moreover, chemically treated adsorbent (Paintosorp (TM)) can be effectively used up to seven adsorption/desorption cycles.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available