نتایج جستجو برای: high grade sodium bentonite

تعداد نتایج: 2321500  

Journal: :Rekayasa: Jurnal Ilmiah Ilmu-Ilmu Eksakta dan Teknologi 2022

The casting process is widely used because it has the advantage of being able to make products with small dimensions very large dimensions, use materials more efficient, can be directly used. However, in process, main triggers for formation defects are nature mold, low permeability, molding compressive strength, sintering point, unsuitable sand grain distribution, so research needed obtain righ...

ژورنال: :مجله علوم و فنون دریایی 2014
حمید علاف نویریان مجیدرضا خوش خلق فرزاد ستوهیان

به منظور بهبود و داوم غذای پلت شده برای فیل ماهی جوان، در محیط های کنترل شده و اثرات آن بر رشد و بقاء، یک آزمایش تغذیه ای با استفاده از سدیم بنتونیت بمدت 8 هفته انجام شد. چهار تیمار در سطوح 0, 1، 5/ 1 ،2درصد بنتونیت در سه تکرار برای هر یک با پروتئین (61/0±45) و چربی ثابت (77/.±16) فرموله و تنظیم شد. هم چنین تعداد سیصد هفتاد و پنج قطعه فیل ماهی جوان با میانگین وزنی (7/22گرم) بطور کاملاً تصادفی ان...

1998

Cetyltrimethylammonium bromide (CTMAB)-bentonite was produced by the exchange of cetyltrimethylammonium (CTMA) cations for inorganic ions on the internal and external surfaces of bentonite. CTMAB-bentonite was used to remove organic contaminants of varying polar character from water. The properties and mechanisms for CTMABbentonite to sorb benzene, toluene, ethylbenzene, nitrobenzene, aniline, ...

2004
A. R. A. USMAN K. STAHR

An incubation experiment lasting 111 d was carried out to study the effect of the addition of three clay minerals (Nabentonite, Ca-bentonite, and zeolite) to soil derived from sewage sludge on water-extractable and exchangeable forms of four heavy metals (Zn, Cd, Cu, and Ni), as well as on soil organic matter mineralization, microbial biomass C and the release of inorganic N. The addition of cl...

2011
Michael Holmboe Susanna Wold Mats Jonsson

Many countries intend to use compacted bentonite as a barrier in their deep geological repositories for nuclear waste. In order to describe and predict hydraulic conductivity or radionuclide transport through the bentonite barrier, fundamental understanding of the microstructure of compacted bentonite is needed. This study examined the interlayer swelling and overall microstructure of Wyoming B...

Journal: :Kansas Agricultural Experiment Station Research Reports 1985

2014
Minglu Liang Beihai He Lihong Zhao

Lime sludge is a special type of precipitated calcium carbonate (PCC) recovered from black liquor, which can be used as paper filler in the paper-making process. However, one of the biggest problems when lime sludge is used as filler is that it is difficult to hydrophobically size the filled paper, especially in the case of paper with high filler content. Also, the efficient retention of the si...

Journal: :BIO web of conferences 2023

The presence of turbidity and precipitates in the bottle causes depreciation wine by consumers. Colloidal instability is at basis these phenomena. cold treatment a technique widely used to stabilize wines, as regards both tartaric colloidal precipitations. However, it an energy-consuming technique. In view sustainable management winery practices, work aimed evaluating possibility using some eno...

Journal: :Radiation protection dosimetry 2011
M Jiránek M Kotrbatá

This paper summarises the results of radon diffusion coefficient measurements in 360 common waterproof materials available throughout Europe. The materials were grouped into 26 categories according to their chemical composition. It was found that the diffusion coefficients of materials used for protecting houses against radon vary within eight orders from 10(-15) to 10(-8) m(2) s(-1). The lowes...

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