Azo and reactive dyes are mostly used in various industries like textile, leather, paper, food, plastic, and printing of color products [1-3]. Dyes are toxic for humans as well as the environment, and must be treated before their discharge to reduce environmental pollution [4]. Several methods for removing dyes include membrane filtration [5], coagulation/flocculation [6], advanced oxidation [7], and phyto-catalytic degradation [8]. Biodegradation of dyes is difficult because of their stable and complex chemical structure. Therefore, the adsorption process has been adopted for removal of dyes due to its simplicity, flexibility, ease of operation, and cost effectiveness [9]. Various adsorbents have been utilized for dye removal, such as alumina, rice husk, banana peels, orange peels, coconut shells, peanut shells, and various clays, etc. [10]. Among these, carbon-based materials are more efficient adsorbents, comprising large numbers of pores and high surface area for adsorption of dyes, but due to their high preparation cost they can't be used
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