Adsorption of Few Dibasic Acids on Ground Nut...

Adsorption of Few Dibasic Acids on Ground Nut Shell Carbon

Author Name : Paled Maheshwari, Tunga

In this study, adsorption of different dibasic acids was performed on Ground nut shell carbon, which was used as an adsorbent, as it is of low cost, as well as eco-friendly adsorbents. Agricultural wastes (AWs) are available abundantly at no or low costs; however, in most cases, not used reasonably. Despite their interesting chemical properties, ground nut shells (CS), almond shells (AS), walnut shells (WS), and peanut shells (PS) are usually burned in the fields or discharged without any valorization. Groundnut shell has also proven itself as a good adsorption material for removing antibiotics from aqueous media. In this study, an attempt has been made to investigate the efficiency of groundnut shells as adsorbent for few dibasic acids. The dibasic acids under study were oxalic acid, Malonic acid, Succinic acid and Glutaric acid.  Ground nut shell was collected and unwanted substances was removed from it. Then the shell was smashed and crushed and put it in a container or furnace and get it for heating. The heating is done until the coconut by product it is the Ground nut shell processed into carbonation of the latter to produce Ground nut shell carbon in the form of burned Carbon., the heating temperature was programmed to increase from the room temperature to the desired carbonisation temperature.  It is the most widely used adsorbent since most if its chemical (example surface groups) and physical properties (example pore size distribution and surface area) can be tuned according to what is needed. Its usefulness also derives from its large micropore (and sometimes meso-pores) volume and the resulting high surface area. The adsorption isotherm for Langmuir adsorption isotherm and Freundlich adsorption isotherm was studied for different dibasic acids on Ground nut shell carbon. The results obtained when compared with different acids the conclusion obtained was compared with different dibasic acids (oxalic acid, malonic acid, succinic acid, glutaric acid). From the readings obtained it is observed that extent of glutaric acid is greater than succinic acid, succinic acid is greater than malonic acid, and malonic acid is greater than oxalic acid.i.e., glutaric acid > succinic acid > malonic acid > oxalic acid. The reason behind the above conclusion must be the presence of 3 CH₂ group in glutaric acid, and absence of 1 CH₂ group in succinic acid, or 2 CH₂ group in malonic acids, or 3 CH₂ group in oxalic acid.