کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
686235 | 889066 | 2006 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Effect of pH on nickel biosorption by aerobic granular sludge Effect of pH on nickel biosorption by aerobic granular sludge](/preview/png/686235.png)
The Ni2+ biosorption by aerobic granular sludge was studied at various initial pH values of 2–7. Results showed that the initial pH would play an important role in the Ni2+ removal by aerobic granules and affected the zeta potential of aerobic granules. A thermodynamic equilibrium isotherm previously developed can fit the experimental data very well at all studied pH values. The close relationship between the zeta potential and Ni2+ biosorption capacity of aerobic granules showed the electrostatic attraction between the aerobic granules and Ni2+ ions. It was also found that some light metals, such as K+, Mg2+ and Ca2+ would be released into the bulk solution during the Ni2+ uptake onto the aerobic granules, which in turn indicated that ion-exchange was one of the Ni2+ biosorption mechanisms.
Journal: Bioresource Technology - Volume 97, Issue 3, February 2006, Pages 359–363