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JACA (Japan Air Cleaning Association)

The Abstracts of the paper carried by the Journal of JACA

vol.57-2(2019/7/31)

Future image of VOC emission control

We will explain the usefulness of the new VOC recovery system developed by our company while looking at the future image of VOC emission control. We believe that the new system developed by our company can achieve both economic efficiency and reduction of environmental burden. For example, if our system is installed in all drying facilities for adhesive tape and printing, it could be reduced direct and indirect CO2 emissions by about 3 million tons annually. We are sure our new technology will be a great ideal form of VOC processing in the future, therefore we would like to describe as improved innovative idea.

VOC recovery equipment using activated carbon fiber

Volatile organic compounds (VOCs) are contained in exhaust in various industrial processes, for example, LIB separators plants, printing plants and chemical plants. From the aspect of the environmental conservation, it is necessary to remove and recover VOCs from exhaust as organic solvents. Activated carbon fiber “K-FILTER” has been used as adsorbent for VOC for over forty years. This report describes the latest system of VOC recovery system using activated carbon fiber which is put to practical use.

Pollution of chemicals in indoor environment:a public health perspective

In the 1990s, the public health problem has been caused by indoor air pollution, which has been known as “Sick Building Syndrome”, while it has been called “Sick House Syndrome” in Japan. And that has drawn strong public concern to date. After conducting extensive exposure assessments, the Ministry of Health, Labour and Welfare (MHLW) established indoor air quality guidelines for 13 chemicals, including formaldehyde, toluene, and xylene from 1997 to 2002. In addition, the National Building Codes and the formaldehyde emission standards to control building materials were revised. However, the types and concentrations of these pollutants have been inconsistent over time due to lifestyle changes and the development of novel household products and building materials. Therefore, the MHLW started to newly establish or update the guidelines from 2012. Extensive exposure assessments in housing were also started in Japan. The MHLW proposed a new approach to establish guidelines based on the health risk assessment. On the other hands, new issues have been suggested such as semi-volatile organic compounds (SVOCs) in indoor dusts, including phthalates and phosphates. In indoor environments, there are multiple media by which humans come in contact with SVOCs, particularly phthalates, including indoor air, indoor dust, and certain foods, with three exposure pathways (inhalation, ingestion, and dermal exposure). Therefore, source control is required for phthalates used in various products, which have multimedia exposure pathways to humans. The European Commission has adopted a decision to amend the REACH (Registration, evaluation, authorization and restriction of chemicals) regulation and restrict the use of the phthalates, di-2-ethylhexyl phthalate (DEHP), di-n-butyl phthalate (DnBP), butylbenzyl phthalate (BBzP), and diisobutyl phthalate (DiBP) in consumer products on the European Union market, which will apply from July 7, 2020.

Indoor odors and the odorous components

The “odor” is an element of the air environment, and the intensity and quality of the indoor odor is also a factor determining the indoor air quality. In this paper, the relationship between the change of lifestyle and the indoor odors will be explained. And, the types of odor and main odorous components in the room will be shown. Additionally, odor sensory phenomena and olfactory characteristics has been examined, and the preserve of odor environment is discussed from the relationship between the odor threshold value and the health effect of the main components.

Sensory evaluation of heat-not-burn tobacco

There are few studies about sensory evaluation of a heat-not-burn tobacco. Even if the amount of hazardous chemical substances to be generated from a heat-not-burn tobacco is small, unacceptable odors are not suitable for the indoor air environment. Therefore, forty participants evaluated odors sampled by three heat-not-burn tobaccos with intensity, hedonics, impressions and acceptability scales. Consequently, it has been revealed that the three heat-not-burn tobacco odors had high acceptability twice to ten times of the cigarette odor. Moreover, the acceptability of heat-not-burn tobacco odors evaluated by non-smokers was twice to sixty times higher than that of the cigarette odor.

GMP of Pharmaceutical manufacturing facility and HVAC design

Pharmaceutical manufacturing facilities are necessary for our healthy life. To design, make up and operate with high quality and controlled environments will be important to clarify technical requirements of product. This report introduces some technical requirements based on GMP (Good Manufacturing Practice) which could be a guide for further designs, focused on HVAC (Heating, Ventilation, and Air Conditioning) system, and presents some design, management and inspection methods which is needed to maintain required indoor environmental condition.