Adsorption, Modeling, Thermodynamic, and Kinetic Studies of Methyl Red Removal from Textile-Polluted Water Using Natural and Purified Organic Matter Rich Clays as Low-Cost Adsorbent

Table 1

Characteristics of methyl red (MR).

Chemical structure
Chemical formula	C15H15N3O2
Change range of pH	4.4 < pH < 6.0
λmax	525 nm

Methyl red (MR) is soluble in water, ethanol, glacial acetic acid, and ether [39]. The group of azo dyes is characterized by the presence of –N = N- bond and synthesized by primary amine [40, 41].