نتایج جستجو برای: iran natural diatomite

تعداد نتایج: 580591  

Journal: :Agrarnaâ nauka 2021

Relevance . Modern livestock breeders face an important task of producing organic products, in Russia this is regulated by the Federal Law “On Organic Products” (from 01.01.2020), it allows producers to enter state register and mark products with “organic” sign. There a problem deterioration quality milk, low content fat, protein, SOMO, deficiency macro- microelements, vitamins, which associate...

Journal: :Agrarnaâ nauka 2021

Relevance. Modern livestock breeders face an important task of producing organic products, in Russia this is regulated by the Federal Law “On Organic Products” (from 01.01.2020), it allows producers to enter state register and mark products with “organic” sign. There a problem deterioration quality milk, low content fat, protein, SOMO, deficiency macro-and microelements, vitamins, which associa...

Adsorbent prepared from waste plants for the treatment of dyeing effluents have high significance in environmental sustainability. In this research, adsorption of Acid Blue 92AB 92 dye from aqueous solutions on raw and modified diatomite nickel oxide nanoparticles was studied. The effect of different operation parameters such as pH, contact time, initial dye concentration, calcinations and sorb...

Journal: :Journal of Inorganic and Organometallic Polymers and Materials 2021

Due to their excellent properties, polymides (PIs) result promising as high-performance materials in different technological fields. In this research, both micron-sized tubular mesoporous silica (mSiO2) and double-tube diatomite particles with cadmium sulfide quantum dots are prepared by chemical deposition method. A cluster of type fluorescent is self-assembling carbon (CDs) on the inner surfa...

2013
Kabil Özcan Tozak Mahmut Erzengin Idris Sargin Nuri Ünlü

In this study, the DNA sorption performance of diatomite-Zn(II) embedded supermacroporous monolithic p(HEMA) cryogels were investigated for the purpose of designing a novel adsorbent that can be utilized for DNA purification, separation and immunoadsorption studies such as removal of anti-dsDNA antibodies from systemic lupus erythematosus (SLE) patient plasma. Poly(2-hydroxyethyl methacrylate) ...

Journal: :Water research 2010
Huaqiang Chu Dawen Cao Bingzhi Dong Zhimin Qiang

This work investigated the feasibility of treating micro-polluted surface water for drinking water production with a bio-diatomite dynamic membrane reactor (BDDMR) at lab-scale in continuous-flow mode. Results indicate that the BDDMR was effective in removing COD(Mn), DOC, UV(254), NH(3)-N and trihalomethanes' formation potential (THMFP) at a hydraulic retention time (HRT) of 3.5h due to its hi...

2018
Lu Cai Jiuyan Gong Jianshe Liu Hailong Zhang Wendong Song Lili Ji

In this work, a new nano-Bi₂MoO₆/diatomite composite photocatalyst was successfully synthesized by a facile solvothermal method. Scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and UV-vis diffuse reflection spectroscopy (DRS) were employed to investigate the morphology, crystal structure, and optical properties. It was shown that nano...

Journal: :iranian journal of catalysis 0
seyed reza azimi pirsaraei department of occupational health engineering, faculty of medical sciences, tarbiat modares university, p.o. box: 14115-111, tehran, iran. hasan asilian mahabadi department of occupational health engineering, faculty of medical sciences, tarbiat modares university, p.o. box: 14115-111, tehran, iran. ahmad jonidi jafari research center for environmental health technology, iran university of medical sciences, p.o box: 14665-354, tehran, iran.

the catalytic oxidation of toluene over copper oxide supported on natural diatomite was investigated. the catalyst was prepared by the wet impregnation method and characterized by using the brunauer emmett teller (bet), field emission scanning electron microscopy (fesem), x-ray diffraction (xrd), x-ray fluorescence (xrf) and temperature-programmed reduction (tpr) analysis. the highest catalytic ...

Journal: :BMC Biotechnology 2007
Sikander Ali Jeffry L Shultz Ikram-ul-Haq

BACKGROUND The 3,4-dihydroxy phenyl L-alanine (L-dopa) is a drug of choice for Parkinson's disease, controlling changes in energy metabolism enzymes of the myocardium following neurogenic injury. Aspergillus oryzae is commonly used for L-dopa production; however, potential improvements in ease of handling, growth rate and environmental impact have led to an interest in exploiting alternative ye...

Journal: :Journal of hazardous materials 2010
Peng Yuan Dong Liu Mingde Fan Dan Yang Runliang Zhu Fei Ge JianXi Zhu Hongping He

Diatomite-supported/unsupported magnetite nanoparticles were prepared by co-precipitation and hydrosol methods, and characterized by X-ray diffraction, nitrogen adsorption, elemental analysis, differential scanning calorimetry, transmission electron microscopy and X-ray photoelectron spectroscopy. The average sizes of the unsupported and supported magnetite nanoparticles are around 25 and 15 nm...

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