Study on Fe() doped Mg/Al-LDO as nitrogen and phosphorus adsorbent. - Details

Author：

Wan, Jing-Jing (Wan, Jing-Jing.) | Hao, Rui-Xia (Hao, Rui-Xia.) | Ma, Jing-Yu (Ma, Jing-Yu.) | Wang, Li-Sha (Wang, Li-Sha.) | Liu, Si-Yuan (Liu, Si-Yuan.)

Indexed by：

EI PKU CSCD CSSCI

Abstract：

Aiming　at　the　problem　of　nitrogen　and　phosphorus　removal　from　sewage　plant　effluent,　Mg/Al/Fe-layered　double　hydroxides　(Mg/Al/Fe-LDHs)　were　synthesized　via　co-precipitation　method,　and　they　were　then　calcined　for　3h　under　a　calcination　temperature　of　450　to　obtain　layered　double　oxide　(Mg/Al/Fe-LDO).　The　effects　of　Fe　()　doping　ratio　on　the　adsorption　of　nitrogen　and　phosphorus　by　Mg/Al-LDO　and　its　adsorption　characteristics　were　investigated.　The　results　indicated　that　when　the　Mg/Al/Fe　molar　ratio　to　3:0.6:0.4,　Mg/Al/Fe-LDO　had　better　adsorption　with　the　maximum　adsorption　capacity　of　nitrogen　and　phosphorus　being　28.57　and　231.46mg/g.　Respectively,　the　adsorption　process　could　be　described　by　Langmuir　adsorption　isotherm　model,　the　fitting　correlation　coefficient　(R2)　were　both　above　0.99.　Based　on　the　results　of　XRD　and　FTIR,　it　was　concluded　that　nitrogen　and　phosphorus　removal　were　mainly　accomplished　by　＇memory　effect＇　and　electrostatic　attraction,　while　phosphorus　removal　was　also　accomplished　by　ion　exchange.　©　2018,　Editorial　Board　of　China　Environmental　Science.　All　right　reserved.

Keyword：

Sewage Ion exchange Magnesium compounds Gas adsorption Precipitation (chemical) Adsorption Aluminum Nitrogen Phosphorus Effluents Molar ratio Nitrogen removal Calcination

Author Community：

[ 1 ] [Wan, Jing-Jing]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, College of Architectural Engineering, Beijing University of Technology, Beijing; 100124, China
[ 2 ] [Hao, Rui-Xia]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, College of Architectural Engineering, Beijing University of Technology, Beijing; 100124, China
[ 3 ] [Ma, Jing-Yu]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, College of Architectural Engineering, Beijing University of Technology, Beijing; 100124, China
[ 4 ] [Wang, Li-Sha]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, College of Architectural Engineering, Beijing University of Technology, Beijing; 100124, China
[ 5 ] [Liu, Si-Yuan]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, College of Architectural Engineering, Beijing University of Technology, Beijing; 100124, China

Reprint Author's Address：

[hao, rui-xia]key laboratory of beijing for water quality science and water environment recovery engineering, college of architectural engineering, beijing university of technology, beijing; 100124, china

Email：

haoruixia@bjut.edu.cn

Show more details

Related Keywords：