Volume 4, Number 1 (Winter 2016)                   Iran J Health Sci 2016, 4(1): 20-30 | Back to browse issues page

DOI: 10.18869/acadpub.jhs.4.1.20

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Biglari H, Afsharnia M, Javan N, Sajadi S A. Phenol Removal from Aqueous Solutions by Adsorption on Activated Carbon of Miswak’s Root Treated with KMnO4. Iran J Health Sci. 2016; 4 (1) :20-30
URL: http://jhs.mazums.ac.ir/article-1-373-en.html

Gonabad University of Medical Sciences
Abstract:   (1195 Views)

Background and Purpose: Phenol and derivatives are common pollutants of drinking water

which are blamed for crucial adverse effects such as poisoning, cancer, and malformation. In

this study, an activated carbon of Miswak’s root (MR) was used for the removal of phenol from

aqueous solutions as a low-cost and high surface adsorbent.

Materials and Methods: Adsorption experiments were then conducted in a batch reactor with

activated carbon prepared from MR and treated with KMnO4 to study the effects of contact time

(0-180 minutes), pH (3-13), initial phenol concentration (100-1000 mg/L), and adsorbent

dosage (0.1-1 g/L) at lab temperature 30 ± 1° C on sorption efficiency. KMnO4 treatment

influenced the physicochemical properties of the carbon and improved its adsorption rate.

Results: The results showed that the equilibrium time of adsorption was 120 minutes maximum

adsorption capacity (94.76% phenol removed) of the MR carbon was 142.15 mg/g at pH 5, the

initial concentration of 100 mg/L, 30° C and 180 minutes contact time. The optimum type of

MR adsorbent was produced in 800° C. The equilibrium data were analyzed by the Langmuir

and Freundlich isotherms and fitted well with the Freundlich model (R2 = 0.9821) better than

Langmuir (R2 = 0.7551) model.

Conclusion: The results revealed that the carbon of MR modified with KMnO4 had a

satisfactory quality in phenol adsorption and can well be used as a novel, inexpensive, effective,

and efficient adsorbent for the removal of phenol from the aquatic environment.

Full-Text [PDF 1608 kb]   (721 Downloads)    
Type of Study: Original Article | Subject: Health Education
Received: 2016/02/20 | Accepted: 2016/02/20 | Published: 2016/02/20

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