Optimization of chemical use for highly filled mechanical grade papers with precipitated calcium carbonate
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چکیده
منابع مشابه
Optimization of Chemical Use for Highly Filled Mechanical Grade Papers with Precipitated Calcium Carbonate
Response surface methodology was used with four factors to screen for the best starch and optimize the use of chemicals in order to maximize precipitated calcium carbonate (PCC) filler retention in a peroxidebleached TMP suspension. Three commercial starches were used in conjunction with colloidal silica and flocculant. The PCC loading level and the interactions between PCC level, starch, flocc...
متن کاملPre-flocculation of Precipitated Calcium Carbonate Filler by Cationic Starch for Highly Filled Mechanical Grade Paper
Three commercial starches were evaluated in conjunction with colloidal silica and flocculant to retain precipitated calcium carbonate (PCC) filler. A unique feature of this study was the fact that the filler was pre-flocculated by a portion of starch (2kg starch/t PCC) and the rest of the starch was added after the flocculant but before the silica. The pulp used was peroxide bleached thermo-mec...
متن کاملPrecipitated Calcium Carbonate Nano-Microparticles: Applications in Drug Delivery
Calcium carbonate (CaCO3) is an abundant mineral that has several uses in paper [1], Portland cement [2] and steel making [3], as agricultural input for soil modification [4], and food additive in soy milk and dairy products. Due to its high biocompatibility, CaCO3 is also employed in many pharmaceutical (anti-acid, dietary supplement for child and postmenopausal women), biological (scaffolds f...
متن کاملPrecipitated Calcium Carbonate Prepared by Batch and Semicontinuous Processes
A comparison of the physical-chemical properties of precipitated calcium carbonate (PCC), prepared by batch and semicontinuous processes, is presented. In both processes, PCC, was synthesized by carbonation of slaked lime. In the batch process the experiments were performed by varying the initial mass concentration and temperature, and the semicontinuous process was conducted by varying the ini...
متن کاملEffect of Hydraulic Activity on Crystallization of Precipitated Calcium Carbonate (PCC) for Eco-Friendly Paper
Wt% of aragonite, a CaCO(3) polymorph, increased with higher hydraulic activity ( degrees C) of limestone in precipitated calcium carbonate (PCC) from the lime-soda process (Ca(OH)(2)-NaOH-Na(2)CO(3)). Only calcite, the most stable polymorph, was crystallized at hydraulic activity under 10 degrees C, whereas aragonite also started to crystallize over 10 degrees C. The crystallization of PCC is ...
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ژورنال
عنوان ژورنال: BioResources
سال: 2011
ISSN: 1930-2126,1930-2126
DOI: 10.15376/biores.6.1.656-671