Methods for the removal of hydrogen sulfide (H2S) gas and removal evaluation experiments.
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Advantages and disadvantages of each hydrogen sulfide gas removal method.
There are various methods for removing hydrogen sulfide gas. In this instance, we conducted comparative experiments using (1) chemical adsorbent methods and (2) photocatalytic methods, which are commonly adopted for hydrogen sulfide gas countermeasures. We filled a 1m³ container with 3.4 ppm (3400 ppb) of gas and compared the removal performance of the chemical adsorbent method and the photocatalytic method. According to the data in the graph, it was found that the chemical adsorbent method sharply decreased the gas concentration compared to the photocatalytic method. While the photocatalytic method took about 120 seconds to reduce the concentration from 3.4 ppm to 0 ppm, the chemical adsorbent completed the removal in approximately 40 to 50 seconds. It can be concluded that by adopting a removal device using a chemical adsorbent, it is possible to minimize the time that electronic devices are exposed to hydrogen sulfide gas when it intrudes.
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Advantages and Disadvantages of Chemical Adsorption and Photocatalysts (1) Chemical Adsorbents <Advantages> - The adsorption speed is extremely fast. - Hydrogen sulfide gas is removed through a chemical reaction, so there is no risk of gas being re-released. It can reliably remove gas. <Disadvantages> - Once the adsorption capacity is full, it becomes ineffective. Replacement of the adsorbent is necessary. (2) Photocatalysts <Advantages> - Theoretically, it can operate without maintenance. (In practice, filter cleaning and replacement of the LED light source are necessary.) <Disadvantages> - The equipment is expensive. - The gas removal speed is slow.
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JMES Co., Ltd. was established in July 1976 with the keyword "environmental measurement." Since then, as a pioneer in environmental measurement in Japan, we have contributed to domestic environmental measures by starting with the import of excellent measuring instruments from overseas and engaging in domestic manufacturing. We have also expanded our business into energy conservation and plant corrosion prevention equipment as an extension of environmental measurement. In September 2003, we obtained ISO 9001:2000 certification (updated to ISO 9001:2015 in September 2021) (LRQA Limited). We promise to further enhance customer satisfaction with our products and services. We position compliance with laws and regulations as our top priority and are committed to advancing as a company to realize our motto, "Make Japan Beautiful."