Adsorption of Nickel(II) Ions from Aqueous Solution using Banana Peel and Coconut Shell

Abstract

This work investigates the comparative adsorptive removal of Ni (II) ions from aqueous solution using coconut shell and banana peel. Optimum conditions for adsorption were determined by experimental design, while Analysis of Variance (ANOVA) and BonferroniHolm Posthoc significance statistical tests on operational parameters were also conducted. The parametric effect of adsorbate dose, adsorbent dose, pH, contact time, particle size and temperature were varied individually, and their effect on the percentage of Ni (II) ion removal was estimated. The maximum percentage removal was achieved at a pH of 8.0 by both adsorbents. The optimum conditions obtained for both adsorbents were 4.5 g adsorbent dose, 30 min contact time and 25 o C for coconut shell, and 4.5 g adsorbent dose, 120 mins and 25 o C for banana peel. The Langmuir isotherm best described the adsorption, with correlation coefficient (R 2 ) values of 0.9821 and 0.9744 for banana peel and coconut shell respectively. The mean free energy from the Dubinin-Radushkevich isotherm suggested chemisorption, and the adsorption mechanism was found to fit the second order.

Adsorption of Lanthanide Ions from Aqueous Solution in Multicomponent Systems using Activated Carbon from Banana Peels (Musa paradisiaca L.)

“…The optimum adsorption time was found to be 2.5 h. This differs from the optimum adsorption time for Sm and Ce ions in sulfuric acid solutions on nanomodified activated carbon (60 min) (Burakova et al, 2018). It also differs from the removal of nickel(II) ion using banana peels (120 min) and coconut shells (30 min) (Olufemi & Eniodunmo, 2018).…”

Recoiled and Sputtered Radioactive Impurities in 11 MeV Proton-based F-18 Production

“…The existence of impurities is always an issue in radionuclide production. Future studies on adsorption of such impurities could be conducted using banana peel and coconut shell, as previously investigated for the adsorption of Ni ions (Olufemi et al, 2018), as well as analysis of solutions in multicomponent systems using activated carbon from banana peels for the adsorption of lanthanide ions (Kusrini et al, 2018), so that the impurity issue in F-18 radionuclide production can be solved.…”

Experimental Investigation of Thermodynamics, Kinetics, and Equilibrium of Nickel Ion Removal from Wastewater Using Zinc Oxide Nanoparticles as the Adsorbent

“…Different types of adsorbents have been used for the removal of nickel metal ion and a variety of pollutants from water. Many researchers have made their efforts for developing inexpensive, available and environmentally friendly adsorbents based on agricultural and industrial wastes by-products such as peat [8], rice hull ash [9], hydrous titanium oxide [10], fly ash [11], sawdust [12], coconut shell [13], sugarcane bagasse [14], red mud [15], all these adsorbents show many disadvantages because of their tight pore size, wide pore size distribution, heterogeneous pore structure, low selectivity and capacity due to their weak interactions with metallic ions, their difficult and very expensive reactivation process, and they need more chemical treatment before use [16]. Recently, nanoparticles have received significant attention due to their novel properties and have come up as an area of extensive research in their utilization as adsorbents [6].…”