Removal of hydrogen sulfide gas using coal fly ash – blast furnace cement composite

The number of complaints regarding offensive odors from service industries, such as restaurants and garages, has recently increased. In this study, we aimed to develop an adsorbent for hydrogen sulfide gas derived from domestic wastewater and reveal the mechanisms of its removal. The adsorbent used...

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Autores principales:	Satoshi Asaoka, Hiroyuki Saito, Tsuyoshi Ichinari, Shinjiro Hayakawa, Takahito Oikawa
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	decentralized wastewater treatment system deodorant hydrogen sulfide recycled materials sdgs septic tank Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/1ed66e1eebba44b097f4128fb3c9834b
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spelling	oai:doaj.org-article:1ed66e1eebba44b097f4128fb3c9834b2021-11-05T19:40:33ZRemoval of hydrogen sulfide gas using coal fly ash – blast furnace cement composite2043-90832408-936210.2166/washdev.2021.091https://doaj.org/article/1ed66e1eebba44b097f4128fb3c9834b2021-09-01T00:00:00Zhttp://washdev.iwaponline.com/content/11/5/824https://doaj.org/toc/2043-9083https://doaj.org/toc/2408-9362The number of complaints regarding offensive odors from service industries, such as restaurants and garages, has recently increased. In this study, we aimed to develop an adsorbent for hydrogen sulfide gas derived from domestic wastewater and reveal the mechanisms of its removal. The adsorbent used for hydrogen sulfide gas removal was prepared by mixing coal fly ash and blast furnace cement with a mixing ratio of 87:13 by mass percentage. The optimum calcination temperature of the adsorbent was 700 °C to achieve a high removal performance for both dry and humid hydrogen sulfide gas. The X-ray absorption fine structure analysis revealed that hydrogen sulfide was removed on the adsorbent by oxidizing to sulfate. A pilot-scale experiment was conducted to evaluate the removal performance of hydrogen sulfide gas derived from domestic wastewater using the developed adsorbent. For a week, the average removal percentage of hydrogen sulfide gas derived from domestic wastewater remained at 99.1%. Therefore, the developed adsorbent for hydrogen sulfide gas is promising and cost-effective for promoting the recycling of coal fly ash. HIGHLIGHTS Adsorbent for H2S gas was prepared by mixing coal fly ash and blast furnace cement.; Adsorbent could remove both dry and humid H2S gas.; H2S was oxidized to sulfate and removed from the adsorbent.; Average removal percentage of H2S gas remained at 99.1%.; This study contributes to sustainable development goals in terms of coal fly ash recycling.;Satoshi AsaokaHiroyuki SaitoTsuyoshi IchinariShinjiro HayakawaTakahito OikawaIWA Publishingarticledecentralized wastewater treatment systemdeodoranthydrogen sulfiderecycled materialssdgsseptic tankEnvironmental technology. Sanitary engineeringTD1-1066ENJournal of Water, Sanitation and Hygiene for Development, Vol 11, Iss 5, Pp 824-830 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	decentralized wastewater treatment system deodorant hydrogen sulfide recycled materials sdgs septic tank Environmental technology. Sanitary engineering TD1-1066
spellingShingle	decentralized wastewater treatment system deodorant hydrogen sulfide recycled materials sdgs septic tank Environmental technology. Sanitary engineering TD1-1066 Satoshi Asaoka Hiroyuki Saito Tsuyoshi Ichinari Shinjiro Hayakawa Takahito Oikawa Removal of hydrogen sulfide gas using coal fly ash – blast furnace cement composite
description	The number of complaints regarding offensive odors from service industries, such as restaurants and garages, has recently increased. In this study, we aimed to develop an adsorbent for hydrogen sulfide gas derived from domestic wastewater and reveal the mechanisms of its removal. The adsorbent used for hydrogen sulfide gas removal was prepared by mixing coal fly ash and blast furnace cement with a mixing ratio of 87:13 by mass percentage. The optimum calcination temperature of the adsorbent was 700 °C to achieve a high removal performance for both dry and humid hydrogen sulfide gas. The X-ray absorption fine structure analysis revealed that hydrogen sulfide was removed on the adsorbent by oxidizing to sulfate. A pilot-scale experiment was conducted to evaluate the removal performance of hydrogen sulfide gas derived from domestic wastewater using the developed adsorbent. For a week, the average removal percentage of hydrogen sulfide gas derived from domestic wastewater remained at 99.1%. Therefore, the developed adsorbent for hydrogen sulfide gas is promising and cost-effective for promoting the recycling of coal fly ash. HIGHLIGHTS Adsorbent for H2S gas was prepared by mixing coal fly ash and blast furnace cement.; Adsorbent could remove both dry and humid H2S gas.; H2S was oxidized to sulfate and removed from the adsorbent.; Average removal percentage of H2S gas remained at 99.1%.; This study contributes to sustainable development goals in terms of coal fly ash recycling.;
format	article
author	Satoshi Asaoka Hiroyuki Saito Tsuyoshi Ichinari Shinjiro Hayakawa Takahito Oikawa
author_facet	Satoshi Asaoka Hiroyuki Saito Tsuyoshi Ichinari Shinjiro Hayakawa Takahito Oikawa
author_sort	Satoshi Asaoka
title	Removal of hydrogen sulfide gas using coal fly ash – blast furnace cement composite
title_short	Removal of hydrogen sulfide gas using coal fly ash – blast furnace cement composite
title_full	Removal of hydrogen sulfide gas using coal fly ash – blast furnace cement composite
title_fullStr	Removal of hydrogen sulfide gas using coal fly ash – blast furnace cement composite
title_full_unstemmed	Removal of hydrogen sulfide gas using coal fly ash – blast furnace cement composite
title_sort	removal of hydrogen sulfide gas using coal fly ash – blast furnace cement composite
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/1ed66e1eebba44b097f4128fb3c9834b
work_keys_str_mv	AT satoshiasaoka removalofhydrogensulfidegasusingcoalflyashblastfurnacecementcomposite AT hiroyukisaito removalofhydrogensulfidegasusingcoalflyashblastfurnacecementcomposite AT tsuyoshiichinari removalofhydrogensulfidegasusingcoalflyashblastfurnacecementcomposite AT shinjirohayakawa removalofhydrogensulfidegasusingcoalflyashblastfurnacecementcomposite AT takahitooikawa removalofhydrogensulfidegasusingcoalflyashblastfurnacecementcomposite
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Removal of hydrogen sulfide gas using coal fly ash – blast furnace cement composite

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