Sorption kinetic study on the removal of phenol using fluted pumpkin and commercial activated carbon

Abstract

Batch adsorption experiments were performed to study the removal kinetics of phenol from aqueous solution using activated carbon derived from fluted pumpkin stem waste (FAC) and a commercial activated carbon (CAC). Optimum removal of 98.50% and 98.40% phenol was achieved at the equilibrium time of 60 mins for FAC and CAC respectively. The applicability of three kinetic models, the pseudo first, pseudo second order and Elovich models for the description of the experimental data was examined. The experimental data was most suitably analysed by the pseudo second order model with a high regression coefficients (R 2) value for phenol on FAC and CAC as 0.987 and 0.980 respectively. The correlation coefficients followed the order pseudo second order > Elovich kinetic model > pseudo-first order. Fluted pumpkin is the largest consumed vegetable in the West African sub region and therefore, creates one of the major agro waste problems in Nigeria. Preliminary investigations showed that several tons of these waste are produced daily in market places around the country but scarcely useful and therefore create environmental nuisance. The results obtained could be useful for the application of agricultural wastes for phenol removal from industrial wastewater.

Removal of Chromium from Waste Water Using Yam Peel Activated Carbon

“…The result of proximate analysis as shown in Table 1 Yam peel was characterized and found to have a low amount of moisture content and ash content of 8.56% and 5.71% respectively, while the crude fibre peel of the sample gave 2.68% which fibre peel of the sample gave 2.68% which makes it a good activated Carbon, as confirm by other works [ 10] [13 ] [15 ].…”

Mechanistic and Characterization Studies for Sorptive Elimination of Emerald Green Dye from Water By Arachis hypogeal Shells and Citrullus lanatus Peels

“…Characterization of adsorbents: Characterization of both the adsorbents was done by determining the pH, pHpzc, bulk density, porosity and iodine number, moisture contents, ash contents, volatile organic contents, carboxylic (acidic functions), phenolic, lactonic and basic sites, using Ekpete and Horsfall methodology [27][28][29] and results were presented in Figs. 2 and 3 and Batch adsorption experiments: The batch adsorption experiments were carried out separately using both adsorbents, in order to optimize adsorption parameters for removing Emerald green dye, like: contact time, pH of dye solution, adsorbent dose, temperature and agitation speed, followed by isothermal studies for determining mechanism of sorption and thermodynamic feasibility of this process on industrial scale.…”

Adsorptive Removal of Pb(II) from Water Using Novel Synthesized Polyaniline Composites with Madhuca longifolia and Eugenia jambolana Leaf Powder

“…0.15 g of each adsorbent was placed in 20 mL of each of the following 0.1 M solutions: sodium hydoxide (NaOH), sodium carbonate (NaCO3), sodium bicarbonate (NaHCO3) and hydrochloric acid (HCl). The samples were sealed and kept at room temperature for 6 h. The solutions were then filtrated and taken for titration of the excess of the base or acid with 0.1M solutions of HCl or NaOH, respectively 21 .…”