Open Access. Powered by Scholars. Published by Universities.®

Other Engineering Commons

Open Access. Powered by Scholars. Published by Universities.®

Weisberg Division of Engineering Faculty Research

Flocculation

Publication Year

Articles 1 - 2 of 2

Full-Text Articles in Other Engineering

Comprehensive Understanding Of Nano-Sized Particle Separation Processes Using Nanoparticle Tracking Analysis, Desmond F. Lawler, Sungmin Youn, Tongren Zhu, Ijung Kim, Boris L.T. Lau Jan 2015

Comprehensive Understanding Of Nano-Sized Particle Separation Processes Using Nanoparticle Tracking Analysis, Desmond F. Lawler, Sungmin Youn, Tongren Zhu, Ijung Kim, Boris L.T. Lau

Weisberg Division of Engineering Faculty Research

Understanding of nano-sized particle separation processes has been limited by difficulties of nanoparticle characterization. In this study, nanoparticle tracking analysis (NTA) was deployed to evaluate the absolute particle size distributions in laboratory scale flocculation and filtration experiments with silver nanoparticles. The results from NTA were consistent with standard theories of particle destabilization and transport. Direct observations of changes in absolute particle size distributions from NTA enhance both qualitative and quantitative understanding of particle separation processes of nano-sized particles.


Silver Nanoparticle Removal From Drinking Water: Flocculation/Sedimentation Or Filtration?, Desmond F. Lawler, Anne M. Mikelonis, Ijung Kim, Boris L.T. Lau, Sungmin Youn Jan 2013

Silver Nanoparticle Removal From Drinking Water: Flocculation/Sedimentation Or Filtration?, Desmond F. Lawler, Anne M. Mikelonis, Ijung Kim, Boris L.T. Lau, Sungmin Youn

Weisberg Division of Engineering Faculty Research

Silver nanoparticles are used in a wide variety of consumer products and are therefore rapidly becoming ubiquitous in the natural environment; they can be expected to be found in the natural waters used as drinking water supplies. This research investigated whether such particles could be expected to be removed in conventional water treatment plants such as flocculation and filtration. Both flocculation and granular media filtration experiments with citrate-capped silver nanoparticles were performed at different ionic strengths and in the presence and absence of natural organic matter. The results were generally consistent with theories of particle destabilization that have been developed ...