Nanocomposite materials for dyes removal

LAURA MABEL SANCHEZ; ROMINA OLLIER PRIMIANO; GONZALEZ, JIMENA S.; ALVAREZ, VERA A.

Handbook of Nanomaterials for Industrial Applications

elsevier

Año: 2018; p. 922 - 937

Environmental contamination is affecting the three maincomponents of the planet Earth: air, water, and ground.Although all of them are necessary for living organisms,hydric resources are fundamental. As a result of populationgrowth, human and industrial activities have developedwithout the corresponding care of the environment,and hydric resources are being increasingly negativelyaffected [1]. Among the most undesired commonly foundpollutants are toxic metals ions, drug residues, dyes, andagrochemicals [2,3].More than 100,000 types of dyes are constantly beingprepared and employed [4]. They are principally wastedby pulp and paper, plastic, leather, dyeing, pharmaceutical,cosmetic, and textile industries [46]. Their presencein water is sometimes so evident that it can simply beseen by the human eye. In Savar (Bangladesh) a canalshows different colors as red, gray, or blue, depending onthe colors that the nearby factories are using [7]. Thewater in the East River in Xintang (China) has turnedblue as a result of denim industries activities [8], and inthe case of Medrano Creek (Argentina) blue and red colorationshave been observed depending on the samplingtime [9].