Synthesis of activated carbon from olive seeds: investigating the yield, energy efficiency, and dye removal capacity

Abstract

This study explored the synthesis of activated carbon from olive seeds by chemical and thermal activation, and evaluated the energy efficiency of the process. The oilseed samples were carbonized at varying temperature (600-840 °C). The produced activated carbons were used for dye removal, studying the effect of temperature. The materials were analyzed using X-ray diffraction and scanning electron microscopy (SEM). The pores and interpore spacing porous of the activated carbons were identified from the SEM images using ImageJ software. The results show that the yield of activated carbon and energy efficiency significantly decreased with increasing carbonization temperature. This reveals that a higher yield of activated carbon and higher energy efficiency was attained at lower carbonization temperature, meaning that producing activated carbon from olive seed is cost effective. Moreover, the activated carbon obtained at 600 °C exhibits the optimum removal efficiency for methylene blue, however, the increase in the removal efficiency upon increasing the temperature from 600 to 720 °C is insignificant (about 1%).

Si/SiOx Nanoparticles Embedded in a Conductive and Durable Carbon Nanoflake Matrix as an Efficient Anode for Lithium‐Ion Batteries

“…Compared to carbon yield from bare EC, the decrease in the carbon content in the prepared samples could be related to EC dissolution in ethanol solvent, which varies the particle size of EC and leads to an effect on the final yield. Additionally, possible loss of material during the transferring to the crucible for heating process due to the very sticky nature of the air‐dried sample . The calculated weight loss from heat‐treated EC is 98 %, which results from successful carbon formation from EC.…”

“…Additionally, possible loss of material during the transferring to the crucible for heating process due to the very sticky nature of the air-dried sample. [39] The calculated weight loss from heattreated EC is 98 %, which results from successful carbon formation from EC. The weight loss can be mainly attributed to the oxidation of carbon in air.…”

A Review on Polymer Nanocomposites and Their Effective Applications in Membranes and Adsorbents for Water Treatment and Gas Separation

“…Adsorption is a favourable and feasible process because of its low cost and high efficiency. Several types of carbonaceous materials have been employed as adsorbents for different adsorption processes on account of their exceptional performance for different process applications [ 95 ]. However, the advancement of exceptionally selective adsorbents for the elimination of toxic metal and organic contaminants are in demand, globally [ 96 ].…”

Performance of eggshells powder as an adsorbent for adsorption of hexavalent chromium and cadmium from wastewater

“…Therefore, it is essential to search for prudent and convincing methods for separation of substantial metals from aqueous solution [34]. Remediation procedures must be intended for high or great removal of impurities while downplaying costs [4]. Since most common approaches are neither practical nor conservative, a better separation method is needed for removal of heavy metal at low-cost.…”