Cooperative coadsorption of 4-nitrophenol and basic yellow 28 dye onto an iron organo–inorgano pillared montmorillonite clay

Structural and thermal properties of inorganic–organic montmorillonite: Implications for their potential environmental applications

“…interlayer distance, pore size) and properties (hydrophobicity, surface charge) can be adjusted to suit the application by varying the organic modifier (usually alkyl ammonium cations with different chain lengths and different number of substituents) and/or inorganic modifier (different metal hydroxy polycations changing the pillar size and the distance between the pillars). For example, hydroxy polycations of Fe(III), Cr(II) and Ti(II) can be used as inorganic modifier and the pillaring agent in IOCs instead of hydroxy aluminium, and the resultant IOCs are effective adsorbents towards nitrophenol, basic yellow 28 dye [28], Supranol yellow 4 GL [29], herbicide diuron [30] and dye sulfacid brilliant pink [31]. Also, mixed metal (Fe/Al) pillared IOCs with improved structure and properties shows promising adsorption capacity towards both inorganic water contaminants (e.g.…”

Synthesis of flower-like α-Fe2O3 and its application in wastewater treatment

“…Because of their resistance to elimination and degradation, the dyes can remain in aqueous solution for a long time, and dyes and their metabolic byproducts will be mutagenic and cancerogenic (Jović-Jovičić et al, 2010;Koswojo et al, 2010;Li et al, 2011;Zhang et al, 2013a;2014). Many techniques such as membrane filtration, biological treatments, sorption, coagulation, flocculation, and advanced oxidation, are used for the treatment of dye-polluted wastewater (Barron-Zambrano et al, 2010;Zermane et al, 2010;Zhang et al, 2013b). Heavy metal ions, such as arsenate ions, are very carcinogenic, harmful, and toxic to human beings (Wu et al, 2013).…”

Static sorption of phenol and 4-nitrophenol onto composite geomaterials based on montmorillonite, activated carbon and cement

“…In recent years, reusable organo-inorgano-clay sorbents have been increasingly introduced for their capacity to efficiently remove phenols and many micropollutants from wastewater, as well as for their good sorbent properties and mechanical stability [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25]. This heightened interest stems from the adsorption properties and high specific surface area of clay, the high volume of micropores and the broad range of surface functional groups introduced into clay structures.…”