Journal
JOURNAL OF MOLECULAR LIQUIDS
Volume 209, Issue -, Pages 87-93Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.molliq.2015.05.025
Keywords
Adsorbents; Pharmaceutical wastewaters; Drugs; Antibiotics; Clays; Polymers; Graphene
Funding
- State Scholarships Foundation (IKY) of Greek Ministry of Education and Religious Affairs
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This review article summarizes the alternative use of adsorbent materials for treatment of pharmaceutical wastewaters. Pharmaceutical wastewaters are very hazardous and toxic not only for the human but also for environmental life. The existence of various drug pollutants in such effluents surcharges the aqueous media. Therefore, apart from the proposed conventional (until now) methods applied (biodegradation, photocatalysis, ozonation, Fenton process, etc.), the applicability of adsorption as simple and low-cost technique is recently applied. Some of the most important materials discussed in this work are clays, polymers (chitosan), zeolites, various types of(activated) carbons, composite materials (graphene-based), agricultural wastes or soils. The key-factor about the selection of the most suitable adsorbent material has resulted after adsorption experiments varying some major parameters (pH, contact time, initial pharmaceutical compound concentration, ionic strength, etc.). However, the most crucial factor is the adsorption capacity. So, some isotherm models are also commented here (Langmuir, Freundlich, Sips), which predict the maximum theoretical adsorption capacity (Q(m)) of each material used. (C) 2015 Elsevier B.V. All rights reserved.
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