precipitation – TechConnect Briefs

Synthesis of Nanostructured Calcium Silicate Hydrates

Kumar A., Scrivener K., Bowen P., LTP, EPFL, Switzerland, CH

Cementitious material contribute to about 5-8% of total world Carbon emission per year. Calcium Silicate Hydrates (C-S-H) is the main product of hydrated Portland cements. A better understanding of its kinetics, growth mechanism and atomic [...]

Innovative Technology for Selective Contaminant Removal

Lean M.H., Chang N., Seo J., Kole A., Hsieh H.B., Melde K., PARC, US

This paper describes a two-stage water treatment technology for removal of dissolved contaminants that is relevant to many water matrices. Removal is achieved by adapting conventional adsorption, coagulation and flocculation, or lime softening and/or soda [...]

Innovative Technology for Selective Contaminant Removal

Lean M.H., Chang N., Seo J., Kole A., Hsieh H.B., Melde K., PARC, US

This paper describes a two-stage water treatment technology for removal of dissolved contaminants that is relevant to many water matrices. Removal is achieved by adapting conventional adsorption, coagulation and flocculation, or lime softening and/or soda [...]

Early Stages of Particle Formation by in-situ UV-Vis and HRS

Schürer B., Segets D., Peukert W., University of Erlangen-Nuremberg, DE

We present a new approach for the study of early states of particle formation that can be applied also for precipitation processes that occur on a millisecond timescale. A T-shaped micro-mixer is used to precipitate [...]

Towards nanosized particles in pharmaceutical industry

Bieri N.R., Meier U., Goncalves E., Zimmermann D., Juhnke M., Thakur R., Novartis Pharma AG, CH

The pharmaceutical industry is facing the problem of an increasing number of drug substances in development which are either poorly water soluble or show pH dependency of solubility. Drug targeting and tailored delivery poses additional [...]

Experimental and numerical investigations of the influence of fluid dynamics on the precipitation of nanoscaled particles

Gradl J., Peukert W., Friedrich-Alexander-University of Erlangen-Nuremberg, DE

Precipitation depends on competing kinetics of various interacting parallel and subsequent steps. These are mixing, chemical reactions, nucleation, growth, aggregation and stabilization. The coupling of all subprocesses is the key for predicting the PSD. In [...]

Influence of Number of Washing on the Characteristic of Nanocrystalline Copper Oxide Powders

Ramli I., Muhammad E.N., Abdullah A.H., Taufiq-Yap Y.H., Abdul Hamid S.B., Abdullah A.H., University Putra Malaysia, MY

in this, effect of number of washing on the characteristic of copper oxide catalyst has been carried out. The samples were prepared by precipitation of copper (II) nitrate trihydrate with an aqueous solution of sodium [...]

Simulation Of Point Defect Clustering In Cz-Silicon Wafers On The Cray T3E Scalable Parallel Computer: Application To Oxygen Precipitation

Karouri F.S., Karoui A., Rozgonyi G.A., North Carolina State University, US

The oxygen precipitation in high purity CZ-silicon for ULSI is investigated with regard to the LO-HI and HI-LO-HI annealing processes used for denuded zone formation. The precipitation can be treated as a stochastic phenomenon and [...]