Kinetics of methylene blue dye adsorption from water using modified fly ash
by Shuyue Zhang; Qi Zhu; Yuanfeng Hui
International Journal of Global Warming (IJGW), Vol. 30, No. 4, 2023

Abstract: The effective removal of dye from wastewater is important to curb its harmful effects on the environment and human health. In this study, a combined acidic/ultrasonic method was used to modify fly ash (FA) and utilise it as an adsorbent for methylene blue (MB) dye. The absorption rate of MB reached a maximum of 89.12% at a MB concentration of 30 mg/L, pH of 10, temperature of 20°C, adsorption time of 120 min, and adsorbent dose of 4 g/L. Fits to the adsorption isotherm and adsorption kinetic curve with the Freundlich and pseudo-second-order kinetic models, respectively, revealed chemisorption of MB on FA. This study presents a novel, cost-effective, and energy-saving method for modifying raw fly ash (RFA) to yield an efficient adsorbent with potential for industrial dye wastewater treatment.

Online publication date: Fri, 14-Jul-2023

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Global Warming (IJGW):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com