Gelatine as an effective crosslinking agent, and can increase the viscosity of gelatine. Urea-formaldehyde adhesive is also used as a curing agent, 20% aqueous solution of the curing speed.
Raw materials in the paper industry as rosin, wax emulsion compound precipitation agent, as flocculants in water treatment, can be made to stay within the Antifoaming agent manufactured alum, aluminum white, oil bleaching, deodorizing agents, certain drugs of raw materials. Also the manufacture of artificial gems and senior ammonium alum. Arsenic content of not more than 5mg/kg products can be used in water treatment flocculant. [9]
1 paper industry as a paper sizing agent to enhance the paper’s water resistant, impervious performance;
(2) dissolved in water to make water and natural rubber fine particles agglomerate into large floc, thus removing from the water, it is used as coagulant for water and wastewater;
3 Turbidity as scavenger agent is also used as precipitation, fixing agents, fillers, and the like. Used in cosmetics antiperspirant cosmetic ingredients (astringent);
4 fire protection industry, and baking soda, foaming composition foam fire extinguishing agent;
5 analytical reagents, mordant, tanning agents, oil bleaching agents, wood preservatives;
6 pasteurized albumin stabilizer (including liquid or frozen whole egg or egg yolk protein);
7 can be used as raw material for the manufacture of artificial gems and senior ammonium alum, other aluminate;
8 fuel industry, in the production of chrome yellow dye and precipitant lake while underway solid color and filler effect.
Effect of leaching on the secondary aluminum sulfate improved Sodic Soil: This study Songnen Plain region before Guo severe saline soil for the study, in the form of laboratory simulation analysis, improved after adding aluminum sulfate, and then rinsed the results were analyzed. Add aluminum sulfate were selected concentrations of 0%, 0.2%, 0.4%, 0.6%, 0.8%, 1.0%, 1.2% was measured, which was studied in seven cases were rinsed once, twice, three times, soil the ion concentration in the solution and the major trend, and the physical properties of the seven concentrations were measured after the addition. Integrated the test results, the following conclusions.
Rinse effectively improve the salinization of the soil. In certain amount of aluminum sulfate, the increase in the number of rinsing with a concentration of sulfate ions and anions such as chloride ion decreased significantly. Carbonate and bicarbonate have decreased significantly, but the impact of carbon dioxide in the air by the rate of decline is not fast sulfate and chloride ions, but also significantly improves the ion results of the soil, the soil is more suitable for crop growth.
Leaching significantly improve soil chemical composition role, but added to the leaching of aluminum sulfate as there are a lot of time, while in shock and so on, for the first time put into hydrocolloids aluminum sulfate, aluminum sulfate partially formed have been destroyed affected the improvement effect of aluminum sulfate to the soil. Meanwhile, rinse the shock process also destroys any original soil aggregates and micro-aggregates, rinsed several times so that the physical properties of the soil does not improve, or even have a negative effect in terms of pH value of the soil solution.
When no leaching the soil, add aluminum sulfate to effectively improve soil properties, especially for reducing soil alkalization degree, the effect is obvious. Soil pH, soil bulk density, soil particle size and other aspects of the role of soil have been improved, and the effect is obvious. Calcium and magnesium ions with the addition of aluminum sulfate was released from a certain extent, also played a role in reducing the degree of soil salinization. However, the use of aluminum sulfate improvements alone, and can not fully solve the problem of soil Songnen Plain. Increase the salt content of the soil material when there is higher due to soil salinization degree, aluminum sulfate did not improve soil salinization of the problem, and even add aluminum sulfate. Therefore, only the aluminum sulfate soil type conversion from soda type of sulfuric acid type, the problem is alleviated, but not completely resolved.
Integrated aluminum sulfate and leaching the pros and cons of these two methods improved, improved ways of combining the two, you can get both the basicity improve soil problems, but also can improve the problem of salinization of the soil, the better the improvement of soil conditions. When adding aluminum sulfate to 0.8%, leaching the soil twice, the researchers noted that the best results can be achieved.
