Agricultural Wastes as Low Cost Adsorbents for Water Treatment
- Authors: Ali Ahmadpour1, Tahereh Rohani Bastami2, Samira Hozhabr Araghi3
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View Affiliations Hide Affiliations1 Department of Chemical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, P.O. Box 9177948944-1111, Mashhad, Iran 2 Department ofChemistry, Ferdowsi University of Mashhad, P.O. Box 91775, Mashhad, Iran 3 Department ofChemistry, Ferdowsi University of Mashhad, P.O. Box 91775, Mashhad, Iran
- Source: Application of Adsorbents for Water Pollution Control , pp 382-412
- Publication Date: November 2012
- Language: English
Agricultural Wastes as Low Cost Adsorbents for Water Treatment, Page 1 of 1
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In this chapter, we have reviewed the results of different studies on the removal of aquatic pollutants especially heavy metals and organics by various biosorbents. Among several sorbents used by different researchers, only agricultural solid wastes without any chemical treatments, i.e. identified as "low cost adsorbents", are considered. In the adsorption process, the effect of different parameters such as: pH, dose of adsorbent, initial pollutant concentration, contact time, adsorbent particle size, temperature, etc. have been investigated. Among them, pH was found to play an important role in the removal of pollutants by biosorbents. The optimum value of pH for maximum adsorption is reported based on the results of various studies. In some cases, the best adsorption isotherms and kinetic models are also introduced for the prediction of adsorbent behavior. This summary information would help in selecting and deciding suitable cheap biosorbents based on local agricultural wastes for the removal of common pollutants globally.
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