[PDF] Top 20 Removal of azo dye from aqueous solutions using chitosan

... an azo (-N=N-) chromophore and an acidic auxochrome (sulfonate : -SO3H) (which, respectively, gives and reinforces the coloration) associated with the benzene ... See full document

... Contaminated solutions’ pH plays a significant role in the adsorption process, especially in determining the adsorption capacity of the chemical ...the dye (Salehi et ...anionic azo dyes and the ... See full document

... colour removal, carried out using immobilised biological cells, Shewanella strain J18 ...colour removal process and to give a basis for the effective recovery of the cell culture species, cell ... See full document

... Batch adsorption experiments were performed to determine the influence of varying parameters such as surfactant loading rates (20-150 percent of the CEC clay), contact time (0-200 minutes), pH (3-11), adsorbent dosage ... See full document

... by chitosan, as quantified in this study from batch experiments, was compared with values of other biosorbents in literature, including natural materials, microbial and algal biomass, industrial and ... See full document

... and azo group dyes are the most common ...to azo dyes contains one or more azo bond ...discharging from industries into water streams can cause eutrophication and interference in ecology and ... See full document

... (8-10). Azo dyes are the most widely used dyes in the textile industry, and the research shows that the highest amount of toxicity were found between basic and Diazo direct dyes (11, ...textile dye is ... See full document

... 2000). Chitosan is a suitable and effective adsorbent for the removal of metal ...ions using modified chitosan, the present study aims at investigating the feasibility of Pb (II) and Hg (II) ... See full document

... al., Chitosan is good adsorbent for metal ions and dyes. However chitosan disintegrates in acidic medium which can be avoided by cross linking with ECH or glutaraldehyde [6] ...of chitosan is due to ... See full document

... the chitosan with positively charged amino groups led to the grafting of these functional groups which is desirable for the adsorption of methyl orange containing negatively charged carboxylic ...of ... See full document

... 2). Azo dyes contain one or several Azo bonds (-N=N-), and are one of the most important synthetic dyeing ...the Azo dyes and their impurities like amines are toxic and even carcinogenic for some ... See full document

... dyes from wastewater ...dyes from wastewater, such adsorbents include, activated corn husk Carbon [7], Jute fiber [8], wheat shells [9], rice husk [10], bamboo dust [11], sugarcane [12], Zeolites [13-16], ... See full document

... arising from industrial effluent has become a major concern owing to their toxicity and potential threat to human life and the environment (Thangamani et ...uses dye materials to colour their ...their ... See full document

... initial dye concentration of 100 mg/L was ...seen from Fig. 3, when the adsorbent dosage increases, removal efficiency of methylene blue also ...increased from 0.2 to 0.6 g as dye ... See full document

... SEM image showing the morphology of AMS surface is presented (Fig. 1). It reveals several pores on the surface of the adsorbent. Absorption peaks that are attributable to OH, COOH, C = O, C = S, and C = C functional ... See full document

... the removal properties was selected as 50 °C because no change in the XRD pattern of organo-magadiite was observed (see above ...the removal efficiency at lower initial concentrations was not affected by ... See full document

... The removal percentage of MG dye from aqueous solutions via adsorption onto DPF adsorbent varied with pH and temperature, showing that these factors play a key role in the adsorption ... See full document

... The removal of dyes from aqueous solutions by adsorption onto low cost adsorbents derived from agricultural waste is beneficial due its possible regeneration at low cost, sludge free ... See full document

... charged chitosan macromolecule with the anionic ...Homogeneous chitosan solution was synthesized by dissolving 1g of chitosan in 200 ml of 2% acetic acid solution prepared in deionized ...to ... See full document

... amaranth dye from solutions with alterations in the parameters such as pH, contact time, sorbent weight, and ...amaranth dye onto the pomegranate peel was an endothermic process that could be ... See full document