악취 및 VOC를 함유한 폐가스의 광촉매 처리: 1. 처리효율에 대한 광촉매담체 다공성의 영향 (Treatment of Waste Air Containing Malodor and VOC: 1. Effect of Photocatalyst-carrying Media Porosity on the Photocatalytic Removal Efficiency of Malodor and VOC of Waste Air)

서지정보

· 발행기관 : 한국화학공학회
· 수록지 정보 : Korean Chemical Engineering Research(HWAHAK KONGHAK) / 50권 / 6호 / 945 ~ 951페이지
· 저자명 : 이은주, 박혜리, 임광희

초록

광촉매반응기의 충전제로서 glass bead-광촉매담체를 control로 하고 다공성의 silica-based 광촉매담체를 사용하였을때의 악취 및 VOC를 함유한 폐가스의 광촉매 처리효율에 대한 광촉매담체 다공성의 영향평가를 수행하였다. 다공성의silica-based-광촉매담체의 광촉매 코팅량은 1,716.3 μg/cm2로서 nonporous glass bead(control)에 담지된 광촉매코팅량인 670 μg/cm2 값의 약 250%이었다. Porous silica-based 담체가 충전된 광촉매반응기의 황화수소 및 톨루엔 제거효율은 각각 22% 및 82%로서, glass-bead 담체가 충전된 UV/광촉매반응기의 경우의 황화수소 및 톨루엔 제거효율인 각각19% 및 53%와 비교하였을 때에 황화수소의 경우는 약 16% 증가하였고 톨루엔의 경우는 약 55% 증가하였다. 따라서다공성의 silica-based 광촉매담체를 사용함으로써 황화수소와 톨루엔의 동시처리효율을 각각 제고하였고, 처리효율의제고율은 황화수소보다 톨루엔의 경우가 3.4배 높았다.

영어초록

The effect of photocatalyst-carrying media porosity on the photocatalytic removal efficiency of malodor and VOC of waste air was evaluated when the photocatalytic removal efficiency of porous silica-based media was compared with that of glass bead as control. The amount of photocatalyst coated on the surface of porous silica-based media was observed to be 1,716.3 μg/cm2, which was 250% as much as that of nonporous glass bead (control) of 670 μg/cm2.
The removal efficiencies of hydrogen sulfide and toluene in case of porous silica-based media were observed to be 22%and 82%, respectively, while the removal efficiencies of hydrogen sulfide and toluene in case of nonporous glass bead media were observed to be 19% and 53%, respectively. Therefore, the removal efficiencies of hydrogen sulfide and toluene increased by 16% and 55%, respectively, when the removal efficiencies of porous silica-based media were compared with those of nonporous glass bead media. Thus the increment ratio of the removal efficiency of toluene was observed to be 3.4 times higher than that of hydrogen sulfide.

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