Nickel Adsorption on the Modified Pine Tree Materials

Abstract

Removal of nickel ions from aqueous solutions containing 1-100 mg l(-1), using pine tree (Pinus nigra) materials modified with HCl, was investigated on a laboratory scale. For this purpose, two natural adsorbents such as the modified pine bark (MPB) and the modified pine cone (MPC) materials with HCl solution were studied. At first, the required concentration level of the HCl solution for the modification was observed, and then this was followed by the determinations of optimum levels of adsorbent amount, stirring rate, contact time and pH values. Various adsorption isotherms were also obtained by using different concentrations of the heavy metal cations tested in the experiment. As a result, the maximum removal efficiency levels obtained were as follows; 97% for the modified pine bark at pH 8 and 80% for the modified pine cone at pH 8.

Application of manganese nodules leaching residue for adsorption of nickel(II) ions from aqueous solution

“…Similar equilibrium time has been reported for Ni(II) adsorption onto Turkish fly ash (Bayat 2002); however, numbers of systems are reported to have equilibrium achieved between 15 min and 1 h (Boujelben et al 2009;Hasar 2003;Suryan and Ahluwalia 2012;Green-Pederson et al 1997). On the other hand, higher equilibrium adsorption times of about 4 h are reported for chitin (Hema et al 2011)-and pine tree material (Argun et al 2010)-based adsorbents. The amount of adsorption is found to decrease with the increasing initial Ni(II) concentration.…”

“…are given in Table 5. The wMNR has loading capacity almost equal to clinoptilolite (Sprynskyy et al 2006) but significantly higher than that for most of the adsorbents listed in Table 5 except modified pine bark (Argun et al 2010) and the activated carbon produced from almond husk (Srivastava et al 2006). Thus, wMNR can also be effectively considered as potential adsorbent for Ni(II) removal from contaminated water.…”

Biosorption optimization of nickel removal from water using Punica granatum peel waste

“…An adsorption capacity of ca. 52 mg g −1 was observed for nickel on pomegranate peel adsorbent at 25 • C. Adsorption capacities from the present study were compared with other adsorbents from previous studies [22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39] and are shown in Table 2. It is evident that the prepared adsorbent shows comparable adsorption efficacy for nickel removal from water.…”

Biosorption of cadmium (ii) ion from aqueous solution by Afzelia africana

“…The diffusion of metals from the bulk solution to active sites of biosorbents occurs predominantly by passive transport mechanism (Veglio and Beolchini, 1997) and various functional groups such as carboxyl, hydroxyl, amino and phosphate present on the cell wall of biosorbents can bind the heavy metals (Avery and Tobin, 1993). The use of various plant biomass for adsorption of heavy metals in solution has been reported in literature and some of these include: African white star apple shell (Anusiem et al, 2010), maize leaf (Babarinde et al, 2006); unmodified and modified maize cob (Igwe and Abia, 2007), rice husk (Ong et al, 2007), shear butter seed husks (Eromosele and Otitolaye, 1994), sago waste (Quek et al, 1998), pomelo peel (Saikaew et al, 2009), husk of bengal gram (Ahalya et al, 2005), groundnut husks (Okieimen et al, 1991), brown seaweed (Antunes et al, 2003), cassava waste biomass (Horsfall et al, 2004), tobacco stems (Wei et al, 2008), chemically modified Rhizopus nigrigans (Bai and Abraham, 2002), cone biomass of Thuja orientalis (Nuhoglu and Oguz, 2003), use of submerged aquatic plant Ceratophyllum demersum, (Keskinkam et al, 2004), modified pine tree (Argun et al, 2005) among others. The current work focused on the use of an economically cheaper adsorbent of natural origin, Afzelia africana in the adsorption of cadmium (II) ion from aqueous solutions.…”