PMID- 19246190
OWN - NLM
STAT- MEDLINE
DCOM- 20090526
LR  - 20191210
IS  - 1873-2976 (Electronic)
IS  - 0960-8524 (Linking)
VI  - 100
IP  - 12
DP  - 2009 Jun
TI  - Removal of persistent organic pollutants from micro-polluted drinking water by 
      triolein embedded absorbent.
PG  - 2995-3002
LID - 10.1016/j.biortech.2009.01.026 [doi]
AB  - A new biomimetic absorbent, cellulose acetate (CA) embedded with triolein 
      (CA-triolein), was prepared and applied for the removal of persistent organic 
      pollutants (POPs) from micro-polluted aqueous solution. The comparison of 
      CA-triolein, CA and granular activated carbon (GAC) for dieldrin removal was 
      investigated. Results showed that CA-triolein absorbent gave a lowest residual 
      concentration after 24 h although GAC had high removal rate in the first 4 h 
      adsorption. Then the removal efficiency of mixed POPs (e.g. aldrin, dieldrin, 
      endrin and heptachlor epoxide), absorption isotherm, absorbent regeneration and 
      initial column experiments of CA-triolein were studied in detail. The linear 
      absorption isotherm and the independent absorption in binary isotherm indicated 
      that the selected POPs are mainly absorbed onto CA-triolein absorbent by a 
      partition mechanism. The absorption constant, K, was closely related to the 
      hydrophobic property of the compound. Thermodynamic calculations showed that the 
      absorption was spontaneous, with a high affinity and the absorption was an 
      endothermic reaction. Rinsing with hexane the CA-triolein absorbent can be 
      regenerated after absorption of POPs. No significant decrease in the dieldrin 
      removal efficiency was observed even when the absorption-regeneration process was 
      repeated for five times. The results of initial column experiments showed that 
      the CA-triolein absorbent did not reach the breakthrough point at a breakthrough 
      empty-bed volume (BV) of 3200 when the influent concentration was 1-1.5 microg/L 
      and the empty-bed contact time (EBCT) was 20 min.
FAU - Liu, Huijuan
AU  - Liu H
AD  - State Key Laboratory of Environmental Aquatic Chemistry, Research Center for 
      Eco-Environmental Sciences, Chinese Academy of Sciences, 18, Shuangqing Road, 
      Beijing 100085, China. hjliu@rcees.ac.cn
FAU - Ru, Jia
AU  - Ru J
FAU - Qu, Jiuhui
AU  - Qu J
FAU - Dai, Ruihua
AU  - Dai R
FAU - Wang, Zijian
AU  - Wang Z
FAU - Hu, Chun
AU  - Hu C
LA  - eng
PT  - Evaluation Study
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20090225
PL  - England
TA  - Bioresour Technol
JT  - Bioresource technology
JID - 9889523
RN  - 0 (Organic Chemicals)
RN  - 0 (Water Pollutants, Chemical)
RN  - 122-32-7 (Triolein)
RN  - 3J2P07GVB6 (acetylcellulose)
RN  - 9004-34-6 (Cellulose)
SB  - IM
MH  - Absorption
MH  - Biomimetic Materials/*chemistry
MH  - Cellulose/*analogs & derivatives/chemistry
MH  - Filtration/*methods
MH  - Materials Testing
MH  - Microchemistry/methods
MH  - Organic Chemicals/*isolation & purification
MH  - Triolein/*chemistry
MH  - Water Pollutants, Chemical/*isolation & purification
MH  - Water Purification/*methods
MH  - Water Supply/*analysis
EDAT- 2009/02/28 09:00
MHDA- 2009/05/27 09:00
CRDT- 2009/02/28 09:00
PHST- 2008/10/05 00:00 [received]
PHST- 2009/01/19 00:00 [revised]
PHST- 2009/01/20 00:00 [accepted]
PHST- 2009/02/28 09:00 [entrez]
PHST- 2009/02/28 09:00 [pubmed]
PHST- 2009/05/27 09:00 [medline]
AID - S0960-8524(09)00050-9 [pii]
AID - 10.1016/j.biortech.2009.01.026 [doi]
PST - ppublish
SO  - Bioresour Technol. 2009 Jun;100(12):2995-3002. doi: 
      10.1016/j.biortech.2009.01.026. Epub 2009 Feb 25.