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- Title
Removal of phenol from aqueous solution using rice straw as adsorbent.
- Authors
Sarker, Nandita; Fakhruddin, A.
- Abstract
Phenol is an environmental pollutant; the present study was conducted to examine the adsorption of phenol by rice straw. For this purpose raw (untreated), physically treated (boiled and dried) and thermally treated (heated at 230 °C for 3 h to produce ash) rice straw were selected to determine phenol removal efficiency at different contact times and adsorbent dosages for 1 and <1 mm rice straw particles. Residual phenol concentrations were determined by colorimetric method. Highest 84 % of phenol removal was observed for thermally treated <1 mm rice straw particle. Equilibrium time was more than four hour. Percentage of removal of phenol increased as the adsorbent dose increase. The removal efficiency increase in the order of: raw rice straw < physically treated < thermally treated (ash) rice straw. Langmuir and Freundlich isotherm was developed for 1 and <1 mm particle size of thermally (ash) treated rice straw. Freundlich isotherm best fit the equilibrium data for 1 mm thermally treated rice straw. The results showed that thermally treated rice straw (ash) can be developed as a potential adsorbent for phenol removal from aqueous solution.
- Subjects
PHENOL removal (Sewage purification); AQUEOUS solutions; RICE straw; SORBENTS; FREUNDLICH isotherm equation
- Publication
Applied Water Science, 2017, Vol 7, Issue 3, p1459
- ISSN
2190-5487
- Publication type
Article
- DOI
10.1007/s13201-015-0324-9