PMID- 19256378
OWN - NLM
STAT- MEDLINE
DCOM- 20091027
LR  - 20161018
IS  - 0250-3301 (Print)
IS  - 0250-3301 (Linking)
VI  - 29
IP  - 12
DP  - 2008 Dec
TI  - [Ambient pressure synthesis and characterization of silica aerogel as adsorbent 
      for dieldrin].
PG  - 3415-20
AB  - Hydrophobic silica aerogels were prepared from cheap waterglass precursors via 
      surface modification of wet gels and ambient pressure drying route. Its 
      adsorption capacity of Dieldrin, a typical of persistent organic pollutants 
      (POPs), was examined. It is characterized via BET, FTIR, and DSC-TGA. The silica 
      aerogels were highly hydrophobic with contact angles of 135 degrees-142 degrees, 
      and the hydrophobicity of the aerogels could be maintained up to the temperature 
      of 380 degrees C. The silica aerogels were porous with, pore size distribution of 
      17.5-23.4 nm, porosity of 94.8%-95.6%, and surface area of 444-560 m2 x g(-1). 
      The results of adsorption experiments indicated that the hydrophobic aerogels 
      could remove 84% of dieldrin from aqueous solution within 4 h; the adsorption 
      process followed the pseudo-second-order kinetics process. Based on the 
      adsorption equilibrium results, the adsorption capacity of silica aerogel was 11 
      times bigger than by active carbon.
FAU - Sha, Wei
AU  - Sha W
AD  - State Key Laboratory of Environmental Aquatic Chemistry, Research Center for 
      Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. 
      hewsay@gmail.com
FAU - Liu, Rui-ping
AU  - Liu RP
FAU - Liu, Hui-juan
AU  - Liu HJ
FAU - Qu, Jiu-hui
AU  - Qu JH
LA  - chi
PT  - English Abstract
PT  - Journal Article
PL  - China
TA  - Huan Jing Ke Xue
JT  - Huan jing ke xue= Huanjing kexue
JID - 8405344
RN  - 0 (Gels)
RN  - 0 (Solvents)
RN  - 0 (Water Pollutants, Chemical)
RN  - 7631-86-9 (Silicon Dioxide)
RN  - I0246D2ZS0 (Dieldrin)
SB  - IM
MH  - Adsorption
MH  - Dieldrin/*isolation & purification
MH  - Gels
MH  - Hydrophobic and Hydrophilic Interactions
MH  - Pressure
MH  - Silicon Dioxide/*chemical synthesis/chemistry
MH  - Solvents/chemistry
MH  - Water Pollutants, Chemical/*chemistry
MH  - *Water Purification
EDAT- 2009/03/05 09:00
MHDA- 2009/10/29 06:00
CRDT- 2009/03/05 09:00
PHST- 2009/03/05 09:00 [entrez]
PHST- 2009/03/05 09:00 [pubmed]
PHST- 2009/10/29 06:00 [medline]
PST - ppublish
SO  - Huan Jing Ke Xue. 2008 Dec;29(12):3415-20.