1327-43-1
VEEGUM
CAS: 1327-43-1
Molecular Formula: Al2F30Mg2Si5
1327-43-1 - Names and Identifiers
1327-43-1 - Physico-chemical Properties
| Molecular Formula | Al2F30Mg2Si5 |
| Molar Mass | 812.952672 |
| Density | 2.11g/cm3 at 19.8℃ |
| Appearance | Powder |
1327-43-1 - Study on preparation and application of polysilicate aluminum magnesium composite flocculant
from hownet
Author:
Abstract:
In this paper, aluminum sulfate, magnesium sulfate, water glass and sodium hydroxide are used as raw materials to prepare polysilicate aluminum magnesium (PSAM) flocculant by composite copolymerization, the effects of M/Si molar ratio, Al/Mg molar ratio, silicon content, alkalization degree (B), curing time and flocculation conditions on the flocculation performance of PSAM were studied. The speciation of aluminum in PSAM was studied by means of Al-Ferron complexation colorimetry. The interaction of polysilicic acid with aluminum salts, magnesium salts and their hydrolysates in PSAM was studied by means of X-ray diffraction. With direct lake blue 5B simulated dye wastewater water sample, printing and dyeing wastewater of a knitting dyeing and finishing Co. Ltd in Nanchang, domestic sewage of East China Jiaotong University as the treatment object, the flocculation performance of PSAM flocculant was analyzed through coagulation and stirring test, compared with conventional flocculants such AS polyaluminum chloride (PAC), aluminum sulfate (AS) and magnesium sulfate, advantages of color and CODcr. The flocculation mechanism of PSAM flocculant was discussed, and the economic and social benefits of PSAM flocculant were analyzed. The results show that the M/Si molar ratio, Al/Mg molar ratio, silicon content, alkalization degree (B), curing time and flocculation conditions have certain effects on the flocculation performance of PSAM flocculant. When M/Si = 1/1,Al/Mg = 3/1,nSiO2 = 0.36mol/L,B = 0.5, the treatment effect of PSAM flocculant on the simulated dye wastewater of direct lake blue 5B is the best, and the decolorization rate is 93.12%. There is a certain degree of complexation relationship between polysilicic acid and aluminum salts, magnesium salts and their hydrolysis products. The complexation effect on the structure and morphology of PSAM flocculant, the hydrolysis-polymerization process of aluminum salts and magnesium salts and Al (III) the morphological distribution of the hydrolysates had a certain degree of influence. The coagulation experiments show that PSAM flocculant has a good ability to remove turbidity, color and organic matter in water, especially in printing and dyeing wastewater. The turbidity removal rate can reach 88.99%, The decolorization rate is 84.64%, and the CODcr removal rate is 68.77%, and adapt to a wide pH range (7~11), The treatment effect is more excellent than several conventional flocculants. According to the classical coagulation theory, the flocculation mechanism of PSAM is analyzed. It is considered that PSAM flocculates colloids mainly through the interaction of electric neutralization and adsorption bridging. PSAM flocculant is a safe and effective inorganic polymer flocculant, its social and economic benefits are huge, and it has good prospects for development and application.
stowed
Key words:
polyaluminum magnesium silicate flocculant flocculation performance flocculation mechanism
degree level:
MSc
degree year:
2011
cited:
Last Update：2024-01-02 23:10:35
1327-43-1 - Preparation of a series of polysilicate aluminum flocculants
from VIP Journal Professional Edition
Author:
Abstract:
polysilicate aluminum sulfate flocculant was prepared by using sodium silicate and aluminum sulfate as raw materials, on this basis, polysilicate aluminum zinc sulfate flocculants with different Zn/Si molar ratios and polysilicate aluminum magnesium sulfate flocculants with different Mg/Si molar ratios were prepared. The results showed that Zn/Si molar ratio and Mg/Si molar ratio were the most important factors affecting the Flocculation Efficiency.
Key words:
flocculant synthesis aluminum polysilicate
cited:
year:
2011
Last Update：2023-08-16 22:05:47
1327-43-1 - Polyaluminum magnesium silicate-cationic polyacrylamide flocculant and preparation method thereof
from Baidu Library
patent type:
invention patent
Application (patent) number:
CN201810446978.9
application date:
20180511
Public/Announcement Number:
CN108658190A
Public/announcement date:
20181016
applicant (patent):
Jilin Institute of Chemical Technology
inventor:
Lou Dawei , Ma Jie , Zhang Hao , Lianli , Runnan Wang , Wang xinje , Gao Wenxiu , Zhu Bo
National and provincial code:
CN220203
Abstract:
The invention discloses a polysilicate aluminum magnesium cationic polyacrylamide flocculant and a preparation method thereof. The main raw materials of the flocculant include sodium silicate, aluminum salt, magnesium salt and cationic polyacrylamide: first, sodium silicate is acidified with sulfuric acid, and then cured by water bath stirring to prepare polysilicic acid, magnesium salt and aluminum salt are added in a certain proportion, and then cured by water bath stirring to prepare polyaluminum magnesium silicate flocculant; then, a certain amount of polyacrylamide is stirred and dissolved to prepare a cationic polyacrylamide flocculant by aging. Finally, the polysilicate aluminum magnesium flocculant and the cationic polyacrylamide flocculant are mixed in a certain proportion. The flocculant prepared by the invention has the advantages of inorganic flocculant and organic flocculant, and has better flocculation effect than single flocculant through the synergistic effect of the two. The invention has the characteristics of simple method, easy access to raw materials and low cost, can be widely used in the treatment of domestic sewage and industrial wastewater, and has a broad application prospect in the field of analytical chemistry.
Last Update：2023-08-16 22:05:47
1327-43-1 - Preparation of a series of polysilicate aluminum flocculants
from VIP Journal Professional Edition
Author:
Abstract:
sodium silicate, aluminum sulfate as raw materials to prepare polysilicate aluminum sulfate flocculant, on this basis, polysilicate aluminum zinc sulfate flocculants with different Zn/Si molar ratios and polysilicate aluminum magnesium sulfate flocculants with different Mg/Si molar ratios were prepared. The results show that Zn/Si molar ratio and Mg/Si molar ratio are the most important factors affecting the flocculation effect.
Key words:
flocculant synthesis aluminum polysilicate
DOI:
CNKI:SUN:NMHB.0.2011-11-139
year:
2011
Last Update：2023-08-16 22:05:47
1327-43-1 - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| production method | raw materials such as sodium silicate, aluminum sulfate, food grade magnesium oxide, sodium aluminate and sodium hydroxide are made into a high-concentration aqueous solution, which is added to the reaction kettle in sequence and appropriate proportion. after cooling and stirring, after reaction for a certain period of time, filter press, wash and dry to obtain the finished product. |
Last Update：2024-04-10 22:29:15
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