Natural and Enhanced Remediation Systems - Chapter 2 ppt
Natural and Enhanced Remediation Systems - Chapter 2 ppt
... H
2
O Æ R – OH + 2H
+
+ 2e
–
(loss of H
+
and e
–
) (2. 24)
Alcohols to aldehydes
R CH
2
OH Æ RCHO + 2H
+
+ 2e
–
(loss of H
+
and e
–
) (2. 25)
Aldehydes to acids
RCHO + H
2
O Æ RCOOH + 2H
+
... sub-
stance may decompose before it boils.
20 01 CRC Press LLC
O
2
+ 4e
–
+ 4H
+
= 2H
2
O (water) (2. 32)
Equations 2. 29 2. 32 are half-reactions showing reduction of O
2...
Natural and Enhanced Remediation Systems - Chapter 7 ppt
... site.
1/1/60
4 /23 /60
8/13/60
12/ 3/60
3 /25 /61
7/15/61
11/4/61
2/ 24/ 62
6/16/ 62
10/6/ 62
Date
0.00
1.00
2. 00
3.00
Daily Precipitation (in)
20 01 CRC Press LLC
• From 19 92 to 1993, the Riverbend Landfill ... Layer
0&apos ;-6 "
1&apos ;-1 8"
2& apos ;-3 0"
(min.)
Vegetation
Topsoil
Common Borrow Material
Geocomposite
(Textile-Net-Textile)
40-mil LLDPE
20 0...
Natural and Enhanced Remediation Systems - Chapter 1 doc
... Ethenes
4 .2. 1. 12 IRZ Performance Data
4 .2. 2
In Situ
Metals Precipitation
4 .2. 2.1 Principles of Heavy Metals Precipitation
4 .2. 2 .2 Aquifer Parameters and Transport Mechanisms
4 .2. 2.3 Contaminant ... such
as dose-response and risk-benefit analysis may be employed to assist regulators,
20 01 CRC Press LLC
Natural and Enhanced Remediation Systems
by
Suthan S....
Natural and Enhanced Remediation Systems - Chapter 3 pot
... dechlorination
C
2
HCl
3
+ H
+
+ 2e
–
Þ C
2
H
2
Cl
2
+ Cl
–
–9.6
TCE reductive dechlorination
C
2
H
2
Cl
2
+ H
+
+ 2e– Þ C
2
H
3
Cl + Cl
–
–7 .2
cis-DCE reductive dechlorination
C
2
H
3
Cl + H
+
+ 2e
–
... O
2
Þ 2H
2
O –18.5
Aerobic respiration
5e
–
+ 6H
+
+ NO
3
–
Þ 0.5N
2
+ 3H
2
O –16.9
DenitriÞcation
2e
–
+ 4H
+
+ MnO
2
Þ Mn
2+
+ 2H
2
O –8.6
Man...
Natural and Enhanced Remediation Systems - Chapter 4 pot
... dichloroet-
hene (Cis 1 ,2 DCE, and 1,1 DCE), vinylchloride
• Chlorinated ethanes: 1,1 ,2, 2 tetrachloroethane (1,1 ,2, 2 PCA), 1,1,1 trichloroet-
hane, (1,1,1 TCA), 1,1 ,2 trichloroethane (1,1 ,2 TCA), 1,1 and ... specific bio-geo-chemical and REDOX environments: 1)
engineered anaerobic systems, 2) engineered aerobic systems, and 3)
in situ
chemical
oxidation.
The engin...
Natural and Enhanced Remediation Systems - Chapter 5 pdf
... and mechanisms of phy-
toremediation (Figure 5.1). The scientific understanding of plant, soil and rhizo-
sphere biochemistry, and contaminant fate and transport must be contrasted with
field and ... O
2
2
O
Root Respiration
Exudation
O , CH COOH, C H OH
Cometabolism
2
3
4
5
Contaminant
CO , H O, Cl
Mineralization
22
Contaminent
Uptake
2
H O, Nutients, O
Transpiration
2
Phyt...
Natural and Enhanced Remediation Systems - Chapter 6 pot
... Wastewater Treatment and Wildlife Habitat; 17
Case Studies, EPA 8 3 2- R-9 3-0 05, 1995.
6. CH
2
M-Hill and Payne Engineering, Constructed Wetlands for Livestock Wastewater
Management, EPA Gulf of Mexico ... treatment systems;
3) submerged macrophyte-based wastewater treatment systems; and 4) multistage sys-
tems consisting of a combination of the above-mentioned concepts and o...
Flocculation In Natural And Engineered Environmental Systems - Chapter 2 pdf
... 1997.
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32 Flocculation in Natural and Engineered ... micro- and macro-architecture on outward floc behavior.
Copyright 20 05 by CRC Press
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42 Flocculation in Natura...
Flocculation In Natural And Engineered Environmental Systems - Chapter 9 pptx
... Interface Sci., 24 9, 3 72, 20 02.
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20 0 Flocculation ... global
1-5 667 0-6 1 5-7 /05/$0.00+$1.50
© 20 05by CRCPress
191
Copyright 20 05 by CRC Press
“L1615_C009” — 20 04/11 /20 — 10:57 — page 21 0 — #20
Copy...
Flocculation In Natural And Engineered Environmental Systems - Chapter 19 ppt
... angle
a
(degrees)
γ
BV
(ergs/cm
2
)
γ
LV
(ergs/cm
2
)
γ
BL
(ergs/cm
2
)
G
bioflocculation
(ergs/cm
2
)
4 20 29 (25 ±3) 64.50–68.40 72 ±1 0 .28 –1.07 −0.56 to 2. 14
9 15 23 (17 ±4) 67 .20 –70. 12 72 ±1 0.47–0.09 −0.18 to −0.94
12 ... −0.94
12 29–31 (30 ±1) 63.50–64.50 72 ±1 1.07–1.35 2. 14 to 2. 70
16 30–47 (36 ±7) 54.70–64.00 72 ±1 1 .2 5 .27 2. 40 to −10.54
20 31–45 (37 ±6...
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