METHOD FOR PREPARING AMORPHOUS IRON SULFIDE CARRIER FOR REMOVAL OF NITROGEN IN WATER

WIPO Patent Application WO/2024/043678

A1

The present invention relates to a method for preparing an amorphous iron sulfide carrier for the removal of nitrogen in water, in which, by stabilizing iron hydroxide destroyed by hydrogen sulfide through immersion in water for a certain period of time, sewage and wastewater containing nitrate nitrogen or nitrite nitrogen are effectively removed. The present invention comprises the steps of: preparing iron hydroxide for hydrogen sulfide adsorption, having pores and surface capable of adsorbing hydrogen sulfide (S10); introducing hydrogen sulfide into the prepared iron hydroxide to destroy iron hydroxide, thereby producing amorphous iron sulfide (S20); and stabilizing the amorphous iron sulfide produced by reaction with hydrogen sulfide, through immersion in water for 1 day or longer (S30).

KIM SHIN-DONG (KR)
LEE JAE-MYUNG (KR)
KIM GA-HWI (KR)
SHIN JAE-CHUL (KR)
LEE MIN-JU (KR)
OH SANG-EUN (KR)
KIM SEUNG-GYU (KR)

PCT/KR2023/012460

February 29, 2024

August 23, 2023

Click for automatic bibliography generation  

E & CHEM SOLUTION CORP (KR)

C02F3/10; B01J20/06; C02F101/16

KR20210148668A	2021-12-08
KR20040052386A	2004-06-23
KR20110021504A	2011-03-04
JPH10118445A	1998-05-12

HU YUANSHENG; WU GUANGXUE; LI RUIHUA; XIAO LIWEN; ZHAN XINMIN: "Iron sulphides mediated autotrophic denitrification: An emerging bioprocess for nitrate pollution mitigation and sustainable wastewater treatment", WATER RESEARCH, ELSEVIER, AMSTERDAM, NL, vol. 179, 6 May 2020 (2020-05-06), AMSTERDAM, NL, XP086165153, ISSN: 0043-1354, DOI: 10.1016/j.watres.2020.115914

JEON, Jong Il (KR)

View/Download PDF      PDF Help

Previous Patent: SINGLE PHOTON DETECTION ELEMENT, ELECTRONIC DEVICE, AND LIDAR DEVICE

Next Patent: SECONDARY BATTERY CHARGING SYSTEM AND METHOD