The solubility of sodium oxalate was measured in kraft black liquors at temperatures 115 °C to 140 with dry solid contents 45% 70%. composition studied were varied respect concentration by addition salts. increased increasing temperature and decreased liquor contents. data showed no dependence on the a constant sodium. A mathematical expression derived validated from experimental conditions inv...

The solvent extraction of gallium from a concentrated Jajarm Bayer process liquor containing 164.90 g/l of Na2O, 86.70 g/l of Al2O3 and 106.02 ppm of gallium was investigated using 10 vol.% Kelex100, a 7-alkyl substituted-8 hydroxyquinoline as an extractant, 10 vol.% etanol as a modifier and kerosene as a diluent. At (Vo :Va = 1.0:1.0) ...

In this paper the development of a design model for Black liquor gasification is described, where factorial design is used for pilot plant experiments. The results from the experiments are then used to build multi-variate statistical models using PLS. These models are used to give the correlations between important variables and are later used in the physical simulation model to determine gas c...

Today, an urgent problem is developing a technology for producing cotton cellulose from low-grade linters with the rational use of water resources. This issue especially relevant Republics Central Asia. Also, development production pulp would provide acute shortage and paper, protect environment, reduce energy costs, chemical rationally available raw materials. The paper presents results studie...

The novel and facile preparation of magnetically interconnected micro/ macroporous structure monolithic porous carbon adsorbent (MPCA) were designed presented herein. synthesis was achieved via conventional freeze-drying pyrolysis processes. In this study, sodium alginate wasted black liquor employed as starting precursors. Sodium acts a template materials, whereas liquor, the product from pape...

Citric acid added as set retarder significantly contributed to enhancing the setting temperature and to extending the thickening time of a calcium aluminate phosphate (CaP) geothermal cement slurry consisting of calcium aluminate cement (CAC) as the base reactant and sodium polyphosphate (NaP) solution as the acid reactant. The set-retarding activity of citric acid was due to the uptake of Ca2'...