Now showing items 1-10 of 1276
Phase equilibria for salt-induced lysozyme precipitation: Effect of salt concentration and pH
(ELSEVIER SCIENCE SA, 2008)
The salt-induced precipitation of lysozyme from aqueous solutions was studied at 25 degrees C and various pH values by cloud-point investigations, precipitation experiments (analysing the compositions of the coexisting ...
Integrated treatments for metalworking effluent: chemistry precipitation and biotreatment in air-lift reactor type
(Assoc Brasileira Engenharia Sanitaria AmbientalRio De JaneiroBrasil, 2011)
Phosphorous removal in batch systems using ferric chloride in the presence of activated sludges
(Elsevier Science, 2010-05-11)
The objectives of this work were: (a) to analyze the effect of alkalinity, pH and initial Fe:P molar ratio (Fe0:P0) on the precipitation of orthophosphate using ferric chloride in the presence of activated sludge in order ...
Morphological characterization of aqueous tin oxyhydroxide gel
Light scattering, electron microscopy and X-ray diffraction are used to determine the morphology and size of particles in diluted aqueous gel of tin (IV) oxyhydroxide. Data show that the gel is composed of spherical 2-3 ...
Morphological evolution of zinc oxide originating from zinc hydroxide carbonate
Zinc oxide can be obtained by thermal decomposition of hydrozincite, a topochemical reaction. This work reports the relation between zinc oxide morphology and the precursor zinc hydroxide carbonate precipitation time. The ...
Precipitation chemistry in semi-arid areas of Southern Africa: A case study of a rural and an industrial site
Experimental data on the precipitation chemistry in the semi-arid savanna of South Africa is presented in this paper. A total of 901 rainwater samples were collected with automatic wet-only samplers at a rural site, Louis ...
Evaluation of operational parameters on the precipitation of endoglucanase and xylanase produced by solid state fermentation of Aspergillus niger
(Brazilian Society of Chemical Engineering, 2011)