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The research aims to find out functional groups involved in the absorption of premetalized dye Acid Blue 158:Cr on chitin/chitosan and researching the sorption mechanism. Physical sorption and chemisorption on amine groups can occur simultaneously, according to chemisorption on amine groups by hydroxyl group or hydroxyl group interaction with the dye's azo base.
Source link: https://europepmc.org/article/MED/IND607936421
An effective adsorbent for Acid Orange 7 dye removal from wastewater was a magnetic pomegranate peels activated carbon composite. The pores of the porous composite at 700°C activation temperature and impregnation ratio of 2:1 was 513. 34 g sm 1 surface area, 0. 4025 cm 3 g, and a 3. 1364 nm mean diameter of the pores. To test MG-PPAC adsorption for AO7 dye, the Langmuir, Freundlich, and Tempkin isotherm models were used. u20131: The maximum monolayer capacity obtained from linear solvation of LIM is 322. 58 mg g u20131. Using PFOM, PSOM, IPDM, FDM, and E, the pseudo-second order model was well-suited to the operational results of AO7 dye removal related to the other kinetic models.
Source link: https://europepmc.org/article/PPR/PPR577835
We investigated the ability of water hyacinth leaves to biosorb 75 mg/L acid red 27 in a continuous system with 30 successive biosorption/desorption cycles in a packed-bed column with pH 2. 0 and 56. 5 L/m 2 at pH 2. 0 and 56. 5 L/m 2 u00b7h volumetric flux in a continuous system consisting of 30 cycles. All the dye was removed from the loaded LEC biomass within 5-6 hrs, using 0. 25 million M NaHCO 3 eluent at 113 L/m 2 u00b7h volumetric flux.
Source link: https://europepmc.org/article/MED/36437376
Indigo Carmine was determined by a simple and fast fluorescent method that depends on quenching of the fluorescent europium-doped carbon dots by the act of inner filter effect. Both excitation and emission fluorescence of prepared carbon dots can be effectively quenched by adding Indigo Carmine dye. Good linearity is demonstrated by the developed spectrofluorimetric method with the concentration of Indigo Carmine dye in the range of 1. 5 to 10. 0 u03bcg/ml and a maximum detection value of 0. 40 bcg/ml. In addition, the proven detection system was used to detect Indigo Carmine in juice samples with acceptable recovery.
Source link: https://europepmc.org/article/MED/36427249
The current probe was designed to remove methyl orange dye from a aqueous solution using core-shell Fe 3 O 4 @Humic acid/montmorillonite nanocomposites. A three-level central composite is used for 300 min reaction time using the response surface analysis technique. The adsorption kinetics model fitted to the pseudo-second-order rate kinetic model, demonstrating an acceptable correlation. Standard Gibbs free electricity, minimum enthalpy, standard entropy, and activation energy have been estimated as well as the activation rate. The results of this investigation show that methyl orange absorption occurs on the adsorbent's Frondelich isothermal form. The dye adsorption reaction mechanism was endothermic, according to u2206H, and the probability of contact between methyl orange molecules and the adsorbent surface of the dye adsorption process was increasing. Positive Ea values pointed to the endothermic absorption process, which made it clear.
Source link: https://europepmc.org/article/PPR/PPR573739
Crystal violet adsorbent hydrogel composite polymer hydrogel composite polymer (SnO) has been developed to be an effective adsorbent for cationic dye in this latest research study. At optimal condition temperatures of 30 o C. = 200 g/100 ml, the optimum condition temperatures were best fitting the pseudo-first-order and Freundlich isotherm of SA-G-/ZnO against CV removal. Depending on the findings, the synthesized SA-g-/ZnO can be used as a promising, eco-friendly, cost-effective, and cost-effective adsorbent for cationic dye removal.
Source link: https://europepmc.org/article/PPR/PPR570435
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