Optimization of Removal of Methylene Blue by Platanus Tree Leaves Using Response Surface Methodology

Abstract

A dependency of the R% and the maximum capacity of sorbent (qmax) was verified. Experimental MaterialsPlatanus tree leaves were collected from a grove in a suburb 2010

Cercis siliquastrum Tree Leaves as an Efficient Adsorbent for Removal of Ag(I): Response Surface Optimization and Characterization of Biosorption

“…[38][39][40]. The intensity variation and shifting the band from 3331 to 3356, 1637 to 1651, and 1068 to 1035 cm À1 verify that two functional groups, both carboxyl and either amine or hydroxyl (phenolic) are involved in metal binding [14,19,20,[38][39][40]. The study of XRD spectra of pristine …”

“…Apart from the agricultural residue, use of tree leaves as a sorbent, which are cheap and easily available in great supply, has been of greatest interest to researchers in recent years [11][12][13][14]. Many of tree leaves have recently been used by our research group for instance, Ulmus carpinifolia, Fraxinus excelsior, Robinia, Elaeagnus, Fraxinus, and Platanus for removing Cu(II), Tl(I), Cd(II), Pb(II), Cr(VI), Hg(II), and methylene blue, respectively, from aqueous solution [14][15][16][17][18][19][20]. There are only a few reports for removal of Ag(I) by biosorbents, particularly by tree leaves such as Cercis siliquastrum [1,8,10,11].…”

“…There are only a few reports for removal of Ag(I) by biosorbents, particularly by tree leaves such as Cercis siliquastrum [1,8,10,11]. Some variables such as pH, sorbent amount, sorbate concentration, shaking time, and temperature are likely to have significant simultaneous influence on biosorption efficiency [15][16][17][18][19][20]. Therefore, the optimization of biosorption process is crucial and should be ascertained.…”

Monosegmented Flow Analysis Exploiting Aqueous Two-phase Systems for the Determination of Cobalt

“…Although these measurements corresponded only to the center point, the results were used for an estimate of the whole experimental domain. 30 Thus, in total, 15 different experiments were carried out. Table 1 displays the variables studied and their minimum and maximum levels, beyond the center point.…”

“…This model can be used to approximate almost any smooth surface over a limited domain. 30 The CCD consists of the following parts: i) a full factorial (2 3 ); (ii) an additional design, usually a star design in which the experimental points are at the distance α = 1.682 from the center; and (iii) a central point. 32 Tables 3 and 4 present the experimental value variables and the design matrix with the results of the CCD, respectively.…”