Removal of bacteria and odor gas by an alumina support catalyst and negative air ions

Yun, Seong Jin; Seo, Young-Jin

doi:10.1016/j.jaerosci.2012.12.006

Cited by 8 publications

(3 citation statements)

References 22 publications

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“…Air anions promote human health by activating cell metabolism and by causing acidic blood to become more alkaline, which confers strong immunity (Chee, 2009). Air anions have been applied in industrial areas because of their sterilizing effects (Yun and Seo, 2013). Two major methods, the high-voltage and spray-ionization methods, are used to generate air anions.…”

Section: Introductionmentioning

confidence: 99%

Growth of and Bacterial Counts on Several Edible Sprouts Exposed to Spray Ionization

Song

Jeon

2015

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Edible sprouts are highly nutritious, containing numerous health-promoting phytochemicals and nutrients. However, the process of sprouting is subject to potential contamination by microorganisms attached to the seed coat. The objective of this study was to determine the effects of air anions generated by spray ionization on growth and sterilization of edible sprouts. Treatment with air anions has positive effects on plant growth and sterilization in 4 kinds of sprouts. Hypocotyl length in red cabbage and kale increased approximately 1.26-fold and radicle length of lettuce, red cabbage, and kale increased 1.4 to 1.6-fold compared to the control. The fresh weight of sprouts in the spray-ionization treatment was significantly (16.0-38.5%) higher than that of the controls. Radicle activity in sprouts exposed to anions was higher than that of the control in all species. Bacterial counts on lettuce, red cabbage, and tatsoi decreased significantly (by 41%, 66%, and 19%, respectively), and bacterial colonies also declined in drainage water. Our findings suggest that spray-ionization treatment is useful for improving sprout growth and for sterilizing sprouts.

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Section: Introductionmentioning

confidence: 99%

Growth of and Bacterial Counts on Several Edible Sprouts Exposed to Spray Ionization

Song

Jeon

2015

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“…, removal of the bacteria and odor gases 11 , hydrogenolysis of glycerol 12 , and also in automobile exhaust catalytic converter and other petrochemical processes 21, 22 . Extended applications of alumina as a catalyst or a catalyst support cause many scientists to do a lot of researches on producing and developing them.…”

Section: 10mentioning

confidence: 99%

Investigation of Salt and precipitating agent effect on the specific surface area and compressive strength of alumina catalyst support

Mahmoudian¹,

Hemmati

Hashemabadi³

et al. 2017

Polish Journal of Chemical Technology

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Nowadays, catalyst supports are extensively used to decrease the costs and increase the contact surface area in chemical reactions. Specifi c surface area, compressive strength, pore volume and pore size are some of the most important characteristics of a catalyst support. In this work, Sol-gel and peptization methods were applied to produce alumina catalyst support. Also the roles of aluminum salts and precipitating agents on the specifi c surface area and compressive strength of alumina catalyst support were investigated. In addition, various additives and common methods in the increasing surface area, compressive strength and adjusting the porosity and pore size are used in this study. The results show that using caustic soda as precipitating agent and aluminum chloride salt yields catalyst supports with the best compressive strength. Also, using aluminum nitrate and ammonia as precipitating agent produced alumina catalyst support with the highest specifi c surface area.

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“…Emission of malodorous gases, apart from undoubtedly unfavorable influence on health and life of living organisms, causes discomfort and is the reason for complaints from inhabitants who live near emission sources (Yun and Seo 2013 ). Exposure to odors can cause, e.g., tension, depression, anger, vigor, fatigue, confusion, total mood disturbance (Schiffman et al 1994 ).…”

Section: Introductionmentioning

confidence: 99%

Technologies for deodorization of malodorous gases

Wysocka

Gębicki

Namieśnik

2019

Environ Sci Pollut Res

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There is an increasing number of citizens’ complaints about odor nuisance due to production or service activity. High social awareness imposes pressure on entrepreneurs and service providers forcing them to undertake effective steps aimed at minimization of the effects of their activity, also with respect to emission of malodorous substances. The article presents information about various technologies used for gas deodorization. Known solutions can be included into two groups: technologies offering prevention of emissions, and methodological solutions that enable removal of malodorous substances from the stream of emitted gases. It is obvious that the selection of deodorization technologies is conditioned by many factors, and it should be preceded by an in-depth analysis of possibilities and limitations offered by various solutions. The aim of the article is presentation of the available gas deodorization technologies as to facilitate the potential investors with selection of the method of malodorous gases emission limitation, suitable for particular conditions.

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Removal of bacteria and odor gas by an alumina support catalyst and negative air ions

Cited by 8 publications

References 22 publications

Growth of and Bacterial Counts on Several Edible Sprouts Exposed to Spray Ionization

Growth of and Bacterial Counts on Several Edible Sprouts Exposed to Spray Ionization

Investigation of Salt and precipitating agent effect on the specific surface area and compressive strength of alumina catalyst support

Technologies for deodorization of malodorous gases

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