![Electroflocculation: the effect of zeta-potential on particle size [An article from: Desalination]](https://www.ebooknetworking.net/books/B00/0PD/bigB000PDSZ2C.jpg)
Electroflocculation: the effect of zeta-potential on particle size [An article from: Desalination]
Book Details
Author(s)E. Ofir, Y. Oren, A. Adin
PublisherElsevier
ISBN / ASINB000PDSZ2C
ISBN-13978B000PDSZ26
MarketplaceIndia 🇮🇳
Description
This digital document is a journal article from Desalination, published by Elsevier in 2007. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
Description:
Electroflocculation (EF) of wastewater or water for reuse with colloidal particles, such as kaolin and iron with the right pH, might be optimal for aggregation during water treatment. In this paper, the EF process was compared to chemical flocculation (CF) through @z-potential and particle size parameters. The results demonstrate that the particle became larger, except in the case of pH 4, where, after 50 min of flocculation, there was a jump in the value and the particle attained a diameter of more than 800 nm. Throughout the entire flocculation time, the @z-potential values indicated a stronger negative charge on the particle. Basically, there was a gradual rise in absolute @z-potential with the increase in particle size. The reason for this behavior can be explained by the solubility of kaolin with a decreasing ionic strength, when certain iron ions are released from the electrode and the charge of the particle is altered. The aggregation process, whereby a few small particles with a negatively-charged surface are rendered into a larger-sized particle, results in a larger total negative charge. It has long been recognized that @z-potential is a very good index of the magnitude of the repulsive interaction between colloidal particles. Measurements of @z-potential are commonly used to assess the stability of colloidal and particle size produced by EF. Thus, the coupling of the EF of kaolin and iron with the right pH might be optimal for producing particles.
Description:
Electroflocculation (EF) of wastewater or water for reuse with colloidal particles, such as kaolin and iron with the right pH, might be optimal for aggregation during water treatment. In this paper, the EF process was compared to chemical flocculation (CF) through @z-potential and particle size parameters. The results demonstrate that the particle became larger, except in the case of pH 4, where, after 50 min of flocculation, there was a jump in the value and the particle attained a diameter of more than 800 nm. Throughout the entire flocculation time, the @z-potential values indicated a stronger negative charge on the particle. Basically, there was a gradual rise in absolute @z-potential with the increase in particle size. The reason for this behavior can be explained by the solubility of kaolin with a decreasing ionic strength, when certain iron ions are released from the electrode and the charge of the particle is altered. The aggregation process, whereby a few small particles with a negatively-charged surface are rendered into a larger-sized particle, results in a larger total negative charge. It has long been recognized that @z-potential is a very good index of the magnitude of the repulsive interaction between colloidal particles. Measurements of @z-potential are commonly used to assess the stability of colloidal and particle size produced by EF. Thus, the coupling of the EF of kaolin and iron with the right pH might be optimal for producing particles.
