High efficiency cabin air filter in vehicles reduces drivers' roadway particulate matter exposures and associated lipid peroxidation

Purpose Development of high efficiency nanofibrous air filter membrane by electrospinning process, to address the air pollution (both the particulate matter and the gaseous components) problem, which has become a major environmental concern. Design/methodology/approach By exploiting the advantage of active sites on soy protein isolate (SPI), the very high surface area of micro-pore rich activated carbon (AC) and the biocompatibility and biodegradable nature of polyvinyl alcohol (PVA). The authors have developed a SPI/AC/PVA hybrid membrane. Spun-bond nonwoven substrate was used as the support material to enhance the mechanical properties and also the filter handling properties. The properties of nanofibrous membrane including morphology, air permeability, filtration efficiency and formaldehyde absorption test were carried out as per standard test methods. Findings SPI-based membrane offers a great potential in air filtration/purification applications. Its potential to capture glancing pollutants at the molecular level is because of the presence of numerous functional groups on the soy protein surface, which enhances the adsorption of particulate matter and toxic gases, even bacteria and viruses to its surface. Originality/value The results are anticipated to provide a potential method to promote the development of a nanofibrous membrane, which can act as a high performance, dual function and eco-friendly air filter/purifier.

Download Full-text

An Advanced Dual‐Function MnO 2 ‐Fabric Air Filter Combining Catalytic Oxidation of Formaldehyde and High‐Efficiency Fine Particulate Matter Removal

Advanced Functional Materials ◽

10.1002/adfm.202001488 ◽

2020 ◽

Vol 30 (42) ◽

pp. 2001488

Author(s):

Zijian Dai ◽

Jie Zhu ◽

Jiaqi Yan ◽

Jiafei Su ◽

Yunfei Gao ◽

...

Keyword(s):

Particulate Matter ◽

Catalytic Oxidation ◽

High Efficiency ◽

Fine Particulate Matter ◽

Dual Function ◽

Air Filter ◽

Fine Particulate

Download Full-text

Eco-Friendly Poly(Vinyl Alcohol) Nanofiber-Based Air Filter for Effectively Capturing Particulate Matter

Applied Sciences ◽

10.3390/app11093831 ◽

2021 ◽

Vol 11 (9) ◽

pp. 3831

Author(s):

Han-Jung Kim ◽

Dong-In Choi ◽

Sang-Keun Sung ◽

Su-Han Lee ◽

Sang-Jin Kim ◽

...

Keyword(s):

Particulate Matter ◽

Quality Factor ◽

Vinyl Alcohol ◽

Nonwoven Fabric ◽

Poly Vinyl Alcohol ◽

Contamination Level ◽

Plastic Pollution ◽

Air Filters ◽

Air Filter ◽

Filter Surface

Due to the increasing use of polypropylene-based nonwoven dust masks and air filters, environmental problems that occur due to the plastic pollution resulting from the disposal of these materials have also increased. Hence, an eco-friendly air filter based on PVA nanofibers (NFs) was fabricated by electrospinning on a nonwoven fabric, and its performance was evaluated as a filter capable of blocking or capturing particulate matter. The quality factor of the optimized PVA NF-based air filter was found to be 0.010606 Pa−1, which is lower than that of a HEPA filter (0.015394 Pa−1), but higher than that of a cabin air filter (0.010517 Pa−1) and a dust mask (0.009102 Pa−1). The contamination level of the PVA NF-based filter was analyzed by optical and structural analyses of the filter surface. Finally, the filter was soaked in water to selectively remove the contaminated PVA NF layer, and the remaining nonwoven fabric was able to be reused to make the filter.

Download Full-text

Radial piston triboelectric nanogenerator-enhanced cellulose fiber air filter for self-powered particulate matter removal

Nano Energy ◽

10.1016/j.nanoen.2020.105357 ◽

2020 ◽

Vol 78 ◽

pp. 105357 ◽

Cited By ~ 1

Author(s):

Jilong Mo ◽

Chenyuan Zhang ◽

Yanxu Lu ◽

Yanhua Liu ◽

Ni Zhang ◽

...

Keyword(s):

Particulate Matter ◽

Cellulose Fiber ◽

Triboelectric Nanogenerator ◽

Air Filter ◽

Self Powered

Download Full-text

High-efficiency particulate air filter test stand and aerosol generator for particle loading studies

Review of Scientific Instruments ◽

10.1063/1.2771421 ◽

2007 ◽

Vol 78 (8) ◽

pp. 085105 ◽

Cited By ~ 7

Author(s):

R. Arunkumar ◽

Kristina U. Hogancamp ◽

Michael S. Parsons ◽

Donna M. Rogers ◽

Olin P. Norton ◽

...

Keyword(s):

High Efficiency ◽

Test Stand ◽

Particle Loading ◽

Air Filter ◽

Aerosol Generator ◽

Filter Test

Download Full-text

Biological safety cabinetry.

Clinical Microbiology Reviews ◽

10.1128/cmr.4.2.207 ◽

1991 ◽

Vol 4 (2) ◽

pp. 207-241 ◽

Cited By ~ 36

Author(s):

R H Kruse ◽

W H Puckett ◽

J H Richardson

Keyword(s):

Antineoplastic Agents ◽

High Efficiency ◽

Class Ii ◽

Class Iii ◽

Clean Room ◽

Air Filter ◽

Biological Safety ◽

Design Function ◽

Laboratory Workers ◽

The One

The biological safety cabinet is the one piece of laboratory and pharmacy equipment that provides protection for personnel, the product, and the environment. Through the history of laboratory-acquired infections from the earliest published case to the emergence of hepatitis B and AIDS, the need for health care worker protection is described. A brief description with design, construction, function, and production capabilities is provided for class I and class III safety cabinets. The development of the high-efficiency particulate air filter provided the impetus for clean room technology, from which evolved the class II laminar flow biological safety cabinet. The clean room concept was advanced when the horizontal airflow clean bench was manufactured; it became popular in pharmacies for preparing intravenous solutions because the product was protected. However, as with infectious microorganisms and laboratory workers, individual sensitization to antibiotics and the advent of hazardous antineoplastic agents changed the thinking of pharmacists and nurses, and they began to use the class II safety cabinet to prevent adverse personnel reactions to the drugs. How the class II safety cabinet became the mainstay in laboratories and pharmacies is described, and insight is provided into the formulation of National Sanitation Foundation standard number 49 and its revisions. The working operations of a class II cabinet are described, as are the variations of the four types with regard to design, function, air velocity profiles, and the use of toxins. The main certification procedures are explained, with examples of improper or incorrect certifications. The required levels of containment for microorganisms are given. Instructions for decontaminating the class II biological safety cabinet of infectious agents are provided; unfortunately, there is no method for decontaminating the cabinet of antineoplastic agents.

Download Full-text