| 54 |
Title |
TI |
[DE] Stabilisierung des ph-Werts bei wässrigen Suspensionen von Metallpartikeln
[EN] Preventing anaerobic corrosion, comprises avoiding hydrogen formation by active pH-stabilization during using elementary metal for groundwater rehabilitation, where pH-environment change takes place with environmentally-compatible material |
| 71/73 |
Applicant/owner |
PA |
Versuchseinrichtung zur Grundwasser- und Altlastensanierung (VEGAS), Institut für Wasserbau, Universität Stuttgart, 70569 Stuttgart, DE
|
| 72 |
Inventor |
IN |
Boer, Cjestmir de, 70176 Stuttgart, DE
;
Klaas, Norbert, 71296 Heimsheim, DE
;
Ruck, Wolfgang, 21391 Reppenstedt, DE
;
Steiert, Stefan, 70174 Stuttgart, DE
|
| 22/96 |
Application date |
AD |
Mar 2, 2009 |
| 21 |
Application number |
AN |
102009012834 |
|
Country of application |
AC |
DE |
|
Publication date |
PUB |
Sep 30, 2010 |
33
31
32 |
Priority data |
PRC
PRN
PRD |
|
| 51 |
IPC main class |
ICM |
C02F 9/04
(2006.01)
|
| 51 |
IPC secondary class |
ICS |
C02F 1/66
(2006.01)
C02F 1/70
(2006.01)
|
|
IPC additional class |
ICA |
|
|
IPC index class |
ICI |
|
|
Cooperative patent classification |
CPC |
B09C 1/002
B09C 1/08
C02F 1/66
C02F 1/705
C02F 2103/06
C02F 2303/08
|
|
MCD main class |
MCM |
C02F 9/04
(2006.01)
|
|
MCD secondary class |
MCS |
C02F 1/66
(2006.01)
C02F 1/70
(2006.01)
|
|
MCD additional class |
MCA |
|
| 57 |
Abstract |
AB |
[DE] Technisches Problem Bei der Anwendung von elementaren Metallen zur Sanierung von Untergrundkontaminationen ist die anaerobe Korrosion ein unerwünschter Effekt, der insbesondere bei durchströmten Systemen einen Verlust an aktivem Metall und eine Verstopfung durch Wasserstoffbildung hervorruft. Problemlösung Durch die Verwendung von pH-stabilisierenden Beimengungen zu den Metallformulierungen kann die anaerobe Korrosion metallspezifisch langfristig vermindert werden und damit die Wirtschaftlichkeit der Methode verbessert werden. Anwendungsgebiet Anwendung von Metallen zur Sanierung von Untergrundkontaminationen.
[EN] The process comprises avoiding the hydrogen formation by an active pH-stabilization during the use of elementary metals for groundwater rehabilitation, where the change in the pH-environment takes place in a metal-specific manner and with environmentally-compatible materials, which are introduced as solid material and achieve a long-term effect. By the change in the pH-environment, the efficiency of the metal use is obviously increased by avoiding loss of active metal and avoiding formation of disruptive corrosion products and the hydrogen formation, which lead to clogging the subsurface. |
| 56 |
Cited documents identified in the search |
CT |
US020060070958A1
US020060081811A1
WO002003013252A1
|
| 56 |
Cited documents indicated by the applicant |
CT |
|
| 56 |
Cited non-patent literature identified in the search |
CTNP |
|
| 56 |
Cited non-patent literature indicated by the applicant |
CTNP |
Cohen, Patterson, McKinley, Prommer (2009): "Zero valent iron remediation of a mixed brominated ethene contaminated groundwater". Journal of Contaminant Hydrology 103, 109-118 1
|
|
Citing documents |
|
Determine documents
|
|
Sequence listings |
|
|
|
Search file IPC |
ICP |
C02F 1/66
C02F 1/70
C02F 9/04
|
