Langmuir isotherm model was the best fit for these poly(DEAEMA) hydrogels-indigo carmine systems. If the diagnosis is questionable, indigo carmine dye can be instilled using ultrasound-guided amniocentesis. Compared with Congo red, amounts of adsorbed indigo carmine are much higher than those of Congo red. Swelling and adsorption capacity increased with decreasing of pH. Maximum amount of adsorbed indigo carmine onto hydrogels was 96.7 mg dye/g gel at pH 2.8, 21 h of adsorption time and 120 mg/L initial dye solution. Concerning its health properties, carminic acid may cause allergic reactions and even anaphylactic shock to a sensitive subset of populations. Maximum equilibrium volume swelling, V/ V 0, value was 21.3 at pH 2.8. Cochineal-derived dyes are mainly used to confer red shades in alcoholic beverages, yogurts, juices, ice creams, and confectionary, although it can be also found in jams and some processed meat products. The dye is sprayed against the colon mucosa wall to identify any tissue which is indicating symptoms of IBD, Colorectal Cancer, Ulcerative Colitis amongst other diseases. Maximum gelation ratio was 98.2% at irradiation dose of 5.3 kGy. The effects of pH, time and initial dye concentration on the adsorption capacity of hydrogels were investigated. The adsorption of dyes was examined using a batch sorption technique. Poly(N,N-Diethylamino ethyl methacrylate) hydrogels were prepared by radiation polymerisation of N,N-diethylamino ethyl methacrylate monomer in the presence of cross-linking agent, ethylene glycol dimethacrylate, and used for the removal of acidic indigo carmine textile dye. Irradiated hydrogels were investigated as a new sorbent for dye removal from aqueous solution. Natural cola nut shells and activated carbon based KOH show higher adsorption capacities with indigo carmine compared to activated carbon based H3PO4.This study examined the removal of acidic indigo carmine dyes from aqueous solutions using cationic hydrogels. D-K-R shows that adsorption process was chemisorption for all the three adsorbents. A 35-year-old woman presented with spontaneously intermittent bloody discharge from her right nipple. Elovich fitted best with data obtained using activated carbon based H3PO4 while intra-particle diffusion model for activated carbon based KOH. We herein report an alternative method of preoperative US-guided indigo carmine dye staining in a patient with no discharge on the day of surgery. It is approved for use as a food colorant in the U.S and E.U. The pseudo-second order kinetic model equation fitted best to the data from all the three adsorbents. Indigo carmine, or 5,5-indigodisulfonic acid sodium salt, is an organic salt derived from indigo by aromatic sulfonation, which renders the compound soluble in water. IC is commonly consumed in the textile industry, especially for coloring of denim goods. The kinetics of indigo carmine dye was discussed by pseudo-first order, pseudo-second order, Elovich and Intra-particle diffusion models. Indigo Carmine (IC) is one of the most popular dyestuffs naturally obtained from the leaves of Indigofera tinctoria 6, 7 which is broadly used as a coloring substance in various areas 8. Langmuir and Freundlich equations correlated well with data obtained using activated carbon based H3PO4 while Freundlich and Tempkin best agreed with activated carbon based KOH. This equilibrium data best fits with all the four isotherm models for cola nut shells. The equilibrium adsorption data were analyzed by Langmuir, Freundlich, Tempkin and Dubin-Kaganer-Raduskushkevich classical isotherm models. The effect of pH, contact time (t), adsorbent dose (m) and initial concentrations (Co) were investigated. Natural cola nut shells and its active carbons were used to remove indigo carmine dye from aqueous solution using batch adsorption test.
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