Dye sorption
WebJun 1, 1998 · Effect of temperature The effect of temperature on the capacity of the peat to remove dye from solution was determined by establishing sorption isotherms at temperature of l&40,60 and 80°C and analysing by the Langmuir equation. The peat particle size range used in these studies was 355-500 bm. WebSep 15, 2024 · In this work, the process of sorption of four textile dyes of different natures, namely Basic Violet 10 (BV10), Acid Red 27 (AR27), Direct Blue 151 (DB151) and …
Dye sorption
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WebApr 11, 2024 · After effective sorption, the DB86 dye was eluted with NaOH solution (0.1 mol/L, 100 mL) for 2 h, washed with DW, and then neutralized for reuse. Before and following the recovery phase, the ... WebJan 15, 2014 · 1. Introduction. The use and release of organic dyes in many industrial products are a threat to water systems [1].The complex aromatic structure of dyes makes them of low biodegradability and stable toward light and chemical treatments [2].Methylene blue (3,7-bis(dimethylamino)-phenothiain-5-ium chloride) is a cationic dye found in many …
WebKeywords: dye, batch sorption, optimization model. INTRODUCTION In recent years many cheap, widely-available materials have been identi® ed as suitable adsorbents for the removal of colour from wastewaters. The sorption of various dyes onpeat13,ontopith4,5and onto wood6,7has been studied. However, only limited application of such data has been WebMay 1, 2024 · The maximum sorption capacity of monolayer for CV dye using AM-SA hydrogel and AM-GO-SA hydrogel was determined 62.07 mg/g and 100.30 mg/g, respectively. It was revealed that the presence of GO in the structure of AM-GO-SA nanocomposite hydrogel increased the adsorption capacity, which could be due to the …
WebJul 5, 2024 · The sorption capacities of the studied adsorbents ranged from 83 to 140 mg/g. The presence of amine groups on the xerogel surface was found to increase its sorption capacity towards the dye studied. The dye adsorption process is endothermic and spontaneous, as indicated by the positive values of ΔH and the negative values of ΔG, … WebApr 22, 2024 · The surface properties of the adsorbent can be altered by pH, which is a significant factor in the adsorption process. Experiments with pH ranging from 2.0 to 10.0 were performed to estimate the pH effect on MG dye sorption, as shown in Figure 4(b). The figure shows that MG dye sorption improved with pH values extending from 2.0 to 8.0.
WebSep 15, 2024 · Kinetics of dye sorption followed a pseudo-first order model, except that of DB151, which was better described by a pseudo-second order model. The sequence of adsorption capacity for both composts was as follows: BV10 > DB151 > RV4 > AR27. In general, dye sorption at the equilibrium was adequately described by the Langmuir …
WebJun 23, 2024 · Sorption kinetic models such as pseudo-first and second order were executed for demonstrating sorption mechanism between the dye and biochar. Results of kinetics study were fitted well to pseudo ... how to shut down my twitter accountWebMay 20, 2024 · Dye sorption capacity increased with increasing initial dye concentration (data not shown) which might be due to the fact that the higher initial dye concentration provides the driving force to overcome the mass transfer resistance between aqueous and solid phases (Daneshvar et al., 2012). On the other hand, the decrease in dye removal ... how to shut down my mcaffeeWebMoreover, 1 exhibits the particularly selective sorption towards the Congo red (CR) dye. Consequently, this study may provide a facile synthetic route for the construction of multi … how to shut down my tabletWebOct 1, 2011 · After sorption, dye solution was separated by decantation from the hydrogels. Spectrophotometric method was applied to the dye solutions. Spectrophotometric … how to shut down my youtube channelWebApr 11, 2024 · There are numerous methods for handling the effluent of dyeing, but the primary ones can be summed up as absorption treatment 17, 18, 19, advanced … noughts and crosses twitterWebIn the physical adsorption mechanism, the dye molecules attach onto the adsorbent surface under the influence of van der Waals forces and hydrogen bonding (Cooney, 1998 ). During chemisorption, the dye molecule or ion attaches itself to a specific surface functional group or site by a chemical bond. noughts and crosses tv dramaWebApr 14, 2024 · pH is an important parameter in sorption studies as it affects the surface properties of the adsorbent and the dissociation of the adsorbate compound . The pH dependences of CV adsorption combined with initial dye concentration and biosorbent dose are illustrated in Figure 4a,c, respectively. The CV removal increased with increasing pH … noughts and crosses usa