Experimental research of photodegradation of indoor formaldehyde by TiO2 immobilized on an ac filter(II) - Details

Author：

Lu, Yuanwei (Lu, Yuanwei.) (Scholars：鹿院卫) | Li, Wencai (Li, Wencai.) | Wang, Wei (Wang, Wei.) (Scholars：王伟) | Ma, Chongfang (Ma, Chongfang.)

Indexed by：

EI Scopus PKU CSCD

Abstract：

This　paper　combined　the　TiO2　with　two　kinds　of　activated　carbon　to　decompose　the　indoor　formaldehyde.　The　experimental　results　shown　that　the　photocatalytic　reaction　rate　and　removal　of　HCHO　by　TiO2　immobilized　on　a　netlike　activated　carbon　are　higher　than　that　of　TiO2　immobilized　on　an　a　granular　activated　carbon.　Comparing　with　TiO2/glass　film,　the　photocatalytic　reaction　using　TiO2/activated　carbon　film　also　comprise　of　mass　transfer　control　process　and　photocatalytic　control　process,　and　the　switch　point　of　photocatalytic　reaction　changed　from　mass　transfer　control　process　to　photocatalytic　reaction　control　was　advanced　with　the　increasing　of　air　stream　velocity.　In　the　lower　concentration　of　contaminants,　the　photocatalytic　reaction　was　controlled　by　the　mass　transfer　and　residence　time　of　contaminants,　and　the　effect　of　residence　time　on　the　photocatalytic　reaction　was　primary.　With　the　increasing　of　residence　time,　the　photocatalytic　removal　of　HCHO　was　increased.　Those　results　will　be　the　base　of　commercialization　of　photocatalytic　technology.

Keyword：

Efficiency Mass transfer Carbon films Formaldehyde Activated carbon Oxide minerals Air cleaners Titanium dioxide Air Process control Air purification

Author Community：

[ 1 ] [Lu, Yuanwei]Key Laboratory of Enhanced Heat Transfer and Energy Conservation, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100022, China
[ 2 ] [Lu, Yuanwei]Key Laboratory of Heat Transfer and Energy Conversion, Beijing Municipality, Beijing University of Technology, Beijing 100022, China
[ 3 ] [Li, Wencai]Key Laboratory of Enhanced Heat Transfer and Energy Conservation, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100022, China
[ 4 ] [Li, Wencai]Key Laboratory of Heat Transfer and Energy Conversion, Beijing Municipality, Beijing University of Technology, Beijing 100022, China
[ 5 ] [Wang, Wei]Key Laboratory of Enhanced Heat Transfer and Energy Conservation, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100022, China
[ 6 ] [Wang, Wei]Key Laboratory of Heat Transfer and Energy Conversion, Beijing Municipality, Beijing University of Technology, Beijing 100022, China
[ 7 ] [Ma, Chongfang]Key Laboratory of Enhanced Heat Transfer and Energy Conservation, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100022, China
[ 8 ] [Ma, Chongfang]Key Laboratory of Heat Transfer and Energy Conversion, Beijing Municipality, Beijing University of Technology, Beijing 100022, China