3. Results and discussion
3.1. Effect of pH on the percent extraction values of Sn(II) by SbS-DET. The effect of pH of reacting species such as metal ions and ligands for the formation of metal complexes is known to play a significant role in their removal and extraction processes [24]. To evaluate and identify the possible contribution of pH value of metal ion on the SbS-DET process for the formation of Sn(II)–(8HQ)2 complex via complexation and removal of Sn(II) from aqueous solution by the action of 8HQ, different Sn(II) solutions were adjusted to pH values of 2.0, 3.0, 4.0, 5.0 and 6.0 and used to monitor such important factor. The selected conditions in such study were 0.5-6.0 min as the dipping time, 15 dipping cycles, the …show more content…
This factor was studied, optimized and evaluated by using five different selected surface areas viz., 19.0, 38.0, 57.0, 76.0 and 95.0 cm2. This study was performed by using 15 dipping cycles, 5.0 min as the selected dipping time and the metal ion solution was adjusted to the optimum pH 5.0. The results of this study are represented in Figure 5 and show the percentage extraction values of Sn(II) as well as the surface coverage in microgram Sn(II) per cm2 of exposed surface areas. One can conclude from this study that the percentage extraction of Sn(II) is highly dependent on the studied surface area. A value of 26.53 % of Sn(II)-extraction was detected under the influence of 19.0 cm2 as the exposed surface area. When the exposed surface area was doubled to 38.0 cm2, the percentage extraction of Sn(II) was also found as 51.02% and this is obviously about the doubled value. The same behavior and observation was also characterized when the surface area was raised to 57.0 cm2 and 76.0 cm2 by producing 69.39% and 83.67% extraction and removal values of Sn(II), respectively. When the exposed surface area reached to 95.0 cm2, the percentage extraction of Sn(II) was also found to increase to 97.96%-extraction and this value is obviously near to complete removal of this heavy metal from the solution. Thus, it is easy to identify and conclude from the collected data of this study that a significant contribution of the exposed surface area in the process of metal removal from aqueous
3.1. Effect of pH on the percent extraction values of Sn(II) by SbS-DET. The effect of pH of reacting species such as metal ions and ligands for the formation of metal complexes is known to play a significant role in their removal and extraction processes [24]. To evaluate and identify the possible contribution of pH value of metal ion on the SbS-DET process for the formation of Sn(II)–(8HQ)2 complex via complexation and removal of Sn(II) from aqueous solution by the action of 8HQ, different Sn(II) solutions were adjusted to pH values of 2.0, 3.0, 4.0, 5.0 and 6.0 and used to monitor such important factor. The selected conditions in such study were 0.5-6.0 min as the dipping time, 15 dipping cycles, the …show more content…
This factor was studied, optimized and evaluated by using five different selected surface areas viz., 19.0, 38.0, 57.0, 76.0 and 95.0 cm2. This study was performed by using 15 dipping cycles, 5.0 min as the selected dipping time and the metal ion solution was adjusted to the optimum pH 5.0. The results of this study are represented in Figure 5 and show the percentage extraction values of Sn(II) as well as the surface coverage in microgram Sn(II) per cm2 of exposed surface areas. One can conclude from this study that the percentage extraction of Sn(II) is highly dependent on the studied surface area. A value of 26.53 % of Sn(II)-extraction was detected under the influence of 19.0 cm2 as the exposed surface area. When the exposed surface area was doubled to 38.0 cm2, the percentage extraction of Sn(II) was also found as 51.02% and this is obviously about the doubled value. The same behavior and observation was also characterized when the surface area was raised to 57.0 cm2 and 76.0 cm2 by producing 69.39% and 83.67% extraction and removal values of Sn(II), respectively. When the exposed surface area reached to 95.0 cm2, the percentage extraction of Sn(II) was also found to increase to 97.96%-extraction and this value is obviously near to complete removal of this heavy metal from the solution. Thus, it is easy to identify and conclude from the collected data of this study that a significant contribution of the exposed surface area in the process of metal removal from aqueous