IJEP 43(7): 588-598 : Vol. 43 Issue. 7 (July 2023)
Yashwantrao Chavan College of Engineering, Department of Civil Engineering, Nagpur, Maharashtra – 441 110, India
Abstract
Activated carbon (ACs) were prepared from the cotton stack (CS) which is a waste product of agriculture in a nitrogen atmosphere regarged as cotton stack charcoal (CSC) and another was chemically treated with potassium hydroxide called chemically activated carbon (CSK) at 600°C. The impregnation ratio was used as 1 for chemical activation. Morphology of activated carbon was examined using scanning electron microscopy (SEM), surface area and porous volume were determined by BET analysis, FTIR spectroscopic method was used to determine functional group and surface chemical properties of activated carbons and pHpzc was used to determine the surface charge. Thermal gravimetry (TG) and derivative thermal gravimetry (DTG) were used to analyze the prepared activated carbon. The chemical treatment had a significant impact on the surface functional groups of biochar. Chemical activation increased metal adsorption capacity. This biochar has an adsorption capacity of more than 80% for removal of nickel at higher pH levels. Chemical activation prior to carbonization with KOH is a cost-effective method for producing an effective, low-cost adsorbent with minimal environmental impact.
Keywords
Removal of nickel, Adsorption, Cotton stack, Charcoal, Pyrolysis
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