Adsorption kinetics and isotherm of anionic dyes onto organo-bentonite from single and multisolute systems

Novel polymer/surfactant modified montmorillonite hybrids and the implications for the treatment of hydrophobic organic compounds in wastewaters

“…The basal spacing of Mt is about 1.45 nm, in accordance with that of a typical calcium montmorillonite. The PDADMA synthesized organo montmorillonites have slightly larger basal spacings comparing with that of the Mt, which means that the loaded PDADMA can further expand the layers of montmorillonite, in accordance with some previous results (Churchman 2002;Radian and Mishael, 2008;Shen et al, 2009). It also indicated a trans configuration of PDADMA on the siloxane surface (Radian and Mishael, 2008).…”

“…The polymer PDADMA is selected because of its low cost (about 25% of CTMA) and commercial availability. It has also been used to intercalate montmorillonite (Churchman, 2002;Ganigar et al, 2010;Shen et al, 2009;Souza and Nascimento, 2008). The structural characteristics of the CTMA and PDADMA synthesized organo montmorillonites (C/P-Mt) will be investigated, and their sorptive characteristics towards phenol will also be examined.…”

Fixed-Bed Column Studies for the Removal of Congo Red Using <i>Simmondsia chinesis</i> (Jojoba) and Coated with Chitosan

“…Dyes and pigments are used in various textile industries to color their products thus leading to the contamination of wastewater [1]. The breakdown of these products influence the life forms causing toxicity to aquatic life [2] and carcinogenic, mutagenic diseases that lead to severe damage to the human beings [3]. Congo red (CR) is a benzidine-based azo dye metabolize to benzidine which generates from plastic industries, rubber printing, and dying etc.…”

Evaluation of adsorption potential of bamboo biochar for metal-complex dye: equilibrium, kinetics and artificial neural network modeling

“…Moreover, most of the dyes are toxic, carcinogenic and harmful to human health (Yang et al 2012;Debrassi et al 2012). As a result, many governments have established environmental restrictions with regard to the quality of colored effluents and have required dye industries to decolorize their effluents before discharging (Shen et al 2009). Hence, various treatment processes such as physical separation, oxidation, biological degradation, coagulation and flocculation have been developed to remove dyes from wastewaters (Forgacs et al 2004;Yang et al 2012).…”