Aerosol filtration performance of nanofibrous mats produced via electrically assisted industrial‐scale solution blowing

2021 ◽  
Author(s):  
Melike Gungor ◽  
Ali Toptas ◽  
Mehmet Durmus Calisir ◽  
Ali Kilic
Keyword(s):  
Industrial Scale ◽  
Solution Blowing ◽  
Filtration Performance ◽  
Electrically Assisted ◽  
Aerosol Filtration

Nano-dry-salt deposition on electret nonwoven confers anticoronaviral effect while retaining aerosol filtration performance

2021 ◽  
Author(s):  
Dae Hoon Park ◽  
Jisoo Choi ◽  
Amin Piri ◽  
Jungho Hwang ◽  
Jeong Hoon Byeon
Keyword(s):  
Air Filters ◽  
Design Concepts ◽  
Salt Deposition ◽  
Filtration Performance ◽  
Aerosol Filtration ◽  
Safe By Design

Safe-by-design concepts for anticoronaviral functions are important in the production of air filters, face masks, and touch substrates because these interventions may be effective in allowing continued socioeconomic activity and...

Industrial-Scale Solution Blowing of Soy Protein Nanofibers

2015 ◽  
Vol 55 (1) ◽  
pp. 323-333 ◽  
Author(s):  
Alexander Kolbasov ◽  
Suman Sinha-Ray ◽  
Abhay Joijode ◽  
Mohammad Abouelreesh Hassan ◽  
Douglas Brown ◽  
...  
Keyword(s):  
Soy Protein ◽  
Industrial Scale ◽  
Solution Blowing

scholarly journals The Effect of Nonwoven Microfiber Substrate Polypropylene Thickness to Air Filtration Performance of Polyacrilonitrille Nanofiber

2019 ◽  
Vol 20 (2) ◽  
pp. 95
Author(s):  
Abdul Rajak ◽  
Tri Siswandi Syahputra ◽  
Muhammad Miftahul Munir ◽  
K. Khairurrijal
Keyword(s):  
Quality Factor ◽  
Low Cost ◽  
Polystyrene Latex ◽  
Woven Fabric ◽  
Substrate Thickness ◽  
Air Filtration ◽  
Sem Image ◽  
Filtration Performance ◽  
Aerosol Filtration

Since a nanofiber medium on itself is soft and fragile and cannot be used alone as air filters. Coating nanofiber on a rigid substrate to form a composite that can be handled readily is necessary. Beside can improve the filtration efficiency, adding the substrate will also save the use of nanofibers mat itself. The aim of this study is to evaluate the effect of substrate thickness on the performance of nanofibers mat in aerosol filtration in order to find the optimum thickness of substrate that can increase the quality of nanofiber filter. The substrate used was a low cost microfiber non-woven fabric made from polypropylene (PP). The nanofibers mat was composed of electrospun polyacrylonitrile (PAN) with concentration of 9 wt.% which dissolved at N,N dimethylformamide (DMF). Five variations of PP different in thickness was used as substrate. From the SEM image, it was found that there is increasing fiber diameter of PAN after electrospun into PP substrate. From the porosity estimation of each nanofiber, it was found that the porosity decreased with increasing the substrate thickness. For test the performance of nanofiber filter, the particles of polystyrene latex (PSL) which generated by atomizer was used as the aerosol particle. In addition, to evaluate the performance filter in PM2.5 filtration, the experiment was carried out with generate the smoke from burning incense. Air filtration performance of all variations is obtained by comparison the results of measurement including: pressure drop, efficiency and quality factor. From the results, there is limitation on the substrates thickness based on the value of the quality factor obtained. Overall, PP nonwoven as the substrates gives the great contribution on the efficiency of PAN nanofiber. Keywords: substrate, polypropylene, thickness, nanofiber, air filtration.

Substantial Improvement of Oil Aerosol Filtration Performance Using In-Plane Asymmetric Wettability

2020 ◽  
Vol 12 (25) ◽  
pp. 28852-28860
Author(s):  
Xin Wei ◽  
Yufeng Liu ◽  
Hua Zhou ◽  
Feng Chen ◽  
Hongxia Wang ◽  
...  
Keyword(s):  
Substantial Improvement ◽  
Filtration Performance ◽  
Aerosol Filtration

Antioxidant activity of three polyphenol-enriched cocoa products obtained on an industrial scale

Planta Medica ◽  
2009 ◽  
Vol 75 (09) ◽  
Author(s):  
JL Ríos ◽  
G Schinella ◽  
S Mosca ◽  
E Cienfuegos-Jovellanos ◽  
MA Pasamar ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Industrial Scale ◽  
Cocoa Products

Application of pure, thermostable, alkali-tolerant xylanase in bleaching of oxygen-delignified pine kraft pulp

TAPPI Journal ◽  
2015 ◽  
Vol 14 (11) ◽  
pp. 689-694
Author(s):  
QINGZHI MA ◽  
QI WANG ◽  
CHU WANG ◽  
NIANJIE FENG ◽  
HUAMIN ZHAI
Keyword(s):  
Intrinsic Viscosity ◽  
Chlorine Dioxide ◽  
High Purity ◽  
Kraft Pulp ◽  
Alkaline Media ◽  
Industrial Scale ◽  
Elemental Chlorine ◽  
Effect Of Oxygen ◽  
Alkaline Tolerant ◽  
Ecf Bleaching

The effect of oxygen (O2)-delignified pine kraft pulp pretreatment by high-purity, thermostable, and alkaline-tolerant xylanases on elemental chlorine free (ECF) bleaching of O2-delignification kraft pulp was studied. The study found that xylanase pretreatment preserved the intrinsic viscosity and yield of O2-delignified pulp while causing about 7% of delignification with high delignification selectivity. The xylanases with high purity, higher thermostability (75°C~80°C) in highly alkaline media (pH 8.0~9.5) could be applied on an industrial scale. Pulp pretreatment by the high-purity, thermostable, and alkaline tolerant xylanases could improve pulp brightness or reduce the chlorine dioxide (ClO2) consumption. In a D0ED1D2 bleaching sequence using the same amount of ClO2, the xylanase-pretreated pulp obtained a higher brightness (88.2% vs. 89.7% ISO) at the enzyme dose of 2 U/g pulp; or for the same brightness as control (88.2% ISO), the ClO2 dosage in the D0 stage was reduced by 27%, which represents a 16% savings in total ClO2 used for bleaching.

How to make Russia a prosperous industrial country (about the role of the oil production and refining complex)

2020 ◽  
pp. 22-28
Author(s):  
Yu. Kanataev
Keyword(s):  
Precious Metals ◽  
Oil Production ◽  
Industrial Country ◽  
Industrial Scale ◽  
Deep Processing ◽  
Domestic Technology ◽  
Petrochemical Complex ◽  
Russian Economy ◽  
Further Development

The author, head of the Association of science-intensive enterprises having great experience in exploration of oil, precious metals, etc. in Russia and abroad (Austria, China, Israel, Ethiopia), first implemented on an industrial scale deep processing of oil using domestic technology, discusses the problems of further development of the Russian economy through the prism of their solutions to the main industries — oil and petrochemical complex.

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