Synthesis of new ammonium chitosan derivatives and their application for dye removal from aqueous media

Removal of Cu(II) and tetracycline using an aromatic rings-functionalized chitosan-based flocculant: Enhanced interaction between the flocculant and the antibiotic

“…Previous studies [20,21] have reported that chitosan and chitosan modified derivatives could be widely used in water treatment. For example, Bratskaya et al dedicated themselves to the removal of heavy metal ions, discussing the potential of chitosan derivatives (Ncarboxyethyl chitosan, CEC) in the removal of heavy metals [Cu (II), Zn(II) and Ni(II)] from water by the flocculation/precipitation process [22].…”

Natural Palygorskite as an Industrial Dye Remover in Single and Binary Systems

“…Adsorption is the accumulation of one or more parts in an interfacial layer, and it may occur by chemisorption or physisorption 14,15 . Various materials are used as adsorbents, e.g., chitosan 16,17 , chitin 18 , soybean oil 19 , material based on cyclodextrin 20 , agricultural wastes 21,22 , cellulose 23,24 , and clay minerals 25,26,27 , among others. Among these materials, clay minerals are very interesting solids because they are natural, abundant, easily extractable, usually nontoxic, and relatively inexpensive.…”

Flocculation of copper(II) and tetracycline from water using a novel pH- and temperature-responsive flocculants

“…When environmental-friendly, biodegradable and renewable biomass-based flocculants were applied (Demey et al, 2014;Elwakeel et al, 2012), the flocculation process further enjoys an advantage of low risk of secondary contamination (Chatterjee et al, 2009;Liu et al, 2014;Roussy et al, 2005;Wang et al, 2013;Yang et al, 2014a). Nonetheless, studies on removal of combined pollutants of antibiotics and heavy metals using flocculation method is quite sparse to date, as there are three flocculation difficulties.…”