ABSTRACT
Tea and coffee are highly consumable drinks and most mornings across the entire world depend upon them. The increasing trend of coffee and tea consumption has also led to the enhancement in the remnant of their residue after usage. Leftover coffee and tea processing plants always create an issue due to their considerable residue production and difficult disposal as they might hinder nature’s environmental processing. This issue attracted the attention of many researchers in terms of generating new ways to utilize the leftover daily waste-generating processing plants. As in the case of coffee residue, it could be possibly used like sorbent for the removal of heavy metals, dye from the aqueous solution, bioethanol, biodiesel production, production of reusable cups, composting material, substrate for mushroom production, and as a natural source for phenolic and antioxidants. It also leads to the development of cellulose using fungi strains from the Western Ghats of India. Another daily waste-generating industry is the tea processing industry and its waste processing also focused on the betterment of nature by adsorbing some of the heavy metals and pollutants like reactive dyes, cadmium, and lead. Tea waste also helps in the activation and conditioning of the use of physical and chemical activation agents like carbon dioxide, zinc chloride, steam, and potassium salts for the activation of tea-leave-based activated carbon. This chapter focuses on the usage of waste generated by the coffee and tea processing industries in favor of environmental aspects.
