TY - JOUR
AU - AL-RUBAIE, Ibtesam Majeed Rasheed
AU - DADOOSH, Awatif Hameed
AU - NASSER, Kadhim Makki
PY - 2022/04/02
Y2 - 2023/02/05
TI - Adsorption of Phosphorous and Zinc, and their interaction and processing power on Bentonite
JF - Iranian Journal of Ichthyology
JA - Iran. J. Ichthyol.
VL - 9
IS - 0
SE - Articles
DO -
UR - https://ijichthyol.org/index.php/iji/article/view/806
SP - 250-257
AB - <p>This work aimed to evaluate isothermic adsorption of Phosphorous and Zinc separately and their interaction on Bentonite minerals. Five concentrations of each element viz. 0, 50, 100, 150, and 200µgL<sup>-1</sup>, and their interaction concentrations of 0+0, 50+50, 100+100, 150+150, 200+200µgL<sup>-1</sup> were used. Langmuier equation was used to calculate Xm and k. Estimating quantity and intensity curves (Q/I) and buffering capacity, as 2.5g of Bentonite was treated with increasing concentrations of P and Zn using K<sub>2</sub>HPO<sub>4</sub> and ZnSO<sub>4</sub>.7H<sub>2</sub>O, respectively, 0, 0.2, 0.4, 0.8, 2 and 4mmol l<sup>-1</sup>. The suspension was shaken for 3 hours and left for 24 hours to equilibrate, then the concentration of both P and Zn in the filtrate was extracted and estimated. The relationship between the quantity (adsorbed amount of e element) and the intensity (ionic activity) was drawn. From the slope of the straight line equation, the buffering capacity of the element was calculated. The results showed a significant increase in P and Zn adsorbed with the increase in levels of addition. Effect of interaction between two elements showed a significant increase in P adsorbed at the last two levels, whereas no significant increase was observed in addition of 50 and 100 µg ml<sup>-1</sup>. The adsorbed Zn increased as a result of interaction between two elements. The value of Xm for adsorption of P was 114.94μg g<sup>-1</sup> in of adding P, and this value was not affected when P and Zn were added together. For Zinc, maximum adsorption capacity value in adding zinc alone was 204.08μg g<sup>-1</sup>, and the value was similar in adding two elements together. Binding energy (k) was 0.056ml μg<sup> -1</sup> by adding P alone, and increased slightly when adding two elements together (0.081μg g<sup>-1</sup>at adding Zinc), and binding energy was 0.005ml μg <sup>-1</sup> and slightly increased when adding two elements together (0.006ml μg <sup>-1</sup>). The adsorbed amount of Z. was higher than P and binding energy is lower. Buffering capacity of P in Bentonite was 13.28 mg P kg<sup>-1</sup> Bentonite, and it is considered an average with its P content whereas, Zinc had 341.84 mg kg<sup>-1</sup> considering mineral with a high Zinc content.</p>
ER -