US 11,919,773 B2
Method for modifying surface of activated carbon and filter for water purifier
Yuseung Choi, Seoul (KR); Suhye Woo, Seoul (KR); Sangduck Lee, Seoul (KR); Seonghwang Kim, Seoul (KR); Soojin Park, Seoul (KR); Dongbeom Seong, Gyeonggi-do (KR); and Yeongrae Son, Gyeonggi-do (KR)
Assigned to LG Electronics Inc., Seoul (KR); and Inha University Research and Business Foundation, Incheon (KR)
Filed by LG Electronics Inc., Seoul (KR); and INHA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION, Incheon (KR)
Filed on May 29, 2020, as Appl. No. 16/887,276.
Claims priority of application No. 10-2019-0081646 (KR), filed on Jul. 5, 2019.
Prior Publication US 2021/0001256 A1, Jan. 7, 2021
Int. Cl. C01B 32/354 (2017.01); B01D 24/46 (2006.01); B01D 35/30 (2006.01); B01D 39/16 (2006.01); B01D 39/20 (2006.01); C01B 32/336 (2017.01)
CPC C01B 32/354 (2017.08) [B01D 24/46 (2013.01); B01D 35/30 (2013.01); B01D 39/16 (2013.01); B01D 39/2062 (2013.01); B01D 2251/104 (2013.01); B01D 2253/102 (2013.01); C01B 32/336 (2017.08)] 20 Claims
OG exemplary drawing
 
1. A method for treating activated carbon configured to be included in a carbon block of a filter for a water purifier, the method comprising:
providing the activated carbon having micro pores and meso pores;
determining whether the activated carbon is (i) meso pore activated carbon (MeAC) having a volume of the meso pores greater than a volume of the micro pores or (ii) micro pore activated carbon (MiAC) having a volume of the micro pores greater than a volume of the meso pores,
inserting the activated carbon into a chamber;
injecting ozone generated from an ozone generator into the chamber, and applying pressure to the chamber; and
modifying a surface of the activated carbon inserted into the chamber based on applying the pressure to the chamber that holds the ozone and the activated carbon,
wherein modifying the surface of the activated carbon comprises:
based on determining that the activated carbon is the MeAC, applying a first ozone-treated time to the activated carbon in the chamber, and
based on determining that the activated carbon is the MiAC, applying a second ozone-treated time to the activated carbon in the chamber, the first ozone-treated time being longer than the second ozone-treated time.