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Biosorption Studies of Indigo Carmine Dye from Its Aqueous Solution Using Agro-Waste
Published in Kailas L. Wasewar, Sumita Neti Rao, Sustainable Engineering, Energy, and the Environment, 2022
Pranay Raut, Dhruti S. Pattanayak, Pravin D. Patil, Dharm Pal, V. K. Singh
Indigo Carmine dye (CI No. 73015, Molecular Weight-466.36 gm/mol) was procured from HiMedia Limited to prepare an aqueous solution using deionized water. Pigeon pea (Cajanus cajan) husk (CCH) was acquired from neighborhood farmers and then entirely washed using tap water to eliminate dust and soil. It was subsequently dehydrated in an oven heated by circulating hot air at 90°C for 24 hours and crumbled in a high-speed blender to prepare powder [19]. The Sample was then stored in a closed bottle without any pre-treatment.
Modeling and optimization of indigo carmine adsorption from aqueous solutions using a novel polymer adsorbent: RSM-CCD
Published in Chemical Engineering Communications, 2020
Gülben Torğut, Mehtap Tanyol, Zeynep Meşe
Indigo carmine (IC) (5,5′-indigo disulfonic acid disodium salt) is a dark blue polyester dye used for dyeing fibers and denim in the textile and food industries (Vidya Lekshmi et al., 2017). It is also used in the cosmetic industry, as an indicator in analytical chemistry, and as an antibacterial agent and a stain in biology (Lakshmi et al., 2009; Othman et al., 2006; Ramesh and Sreenivasa, 2015). However, IC is highly toxic and carcinogenic to mammalian cells and its contact with skin and eyes can cause serious damage (Harrache et al., 2019; Vidya Lekshmi et al., 2017). Dyes, which are used for a variety of applications can also causes environmental pollution, primarily water pollution. Dyes prevent the transmission of light required for photosynthesis, and thus when they contaminate water they cause disturbance in the ecological balance of the water. Therefore, adsorption, photochemical, and electrochemical methods have been developed in order to remove these dyes from the environment.