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Investigations on the interaction between heavy metals, water, and sediment in the presence of NTA; Untersuchungen ueber den Stoffaustausch von Schwermetallen zwischen Sediment und Wasserphase unter dem Einfluss von Nitrilotriessigsaeure

Technical Report:

Abstract

This study was initiated by the discussion in the FRG about the substitution of phosphorus in detergents by NTA. By doping this, a new problem may arise, the remobilization of heavy metals caused by the discharge of NTA into rivers due to the use of such detergents. Therefore according to primary equilibrium studies in 1984 the concentration of NTA in surface waters in the FRG was limited to 200 {mu}g/l. It was the aim of this research to investigate whether this limit should be revised due to slow kinetics. Remobilization experiments which were carried out in a stirred system with natural sediments showed that this process was finished within 24 hours. This equals the situation of a storm flood. Experiments with non-suspended kaolinite as the sediment phase were carried out regarding both the immobilization of Copper and Zinc as well as the remobilization of Zinc and showed that the processes are developing very slow and did not attain the equilibrium state after several hundred hours. The addition of 850 {mu}g/l NTA duplicated the Zinc concentration in the water. (orig./BBR). [Deutsch] Ausgangspunkt der vorliegenden Untersuchung war die Diskussion in der BRD ueber den Ersatz von Phosphat in den Waschmitteln durch NTA.  More>>
Publication Date:
Aug 01, 1991
Product Type:
Technical Report
Report Number:
KFK-4852
Reference Number:
SCA: 540310; PA: DE-91:011556; SN: 91000608086
Resource Relation:
Other Information: PBD: Aug 1991
Subject:
54 ENVIRONMENTAL SCIENCES; COPPER COMPOUNDS; MASS TRANSFER; ZINC COMPOUNDS; LEAD COMPOUNDS; CADMIUM COMPOUNDS; SURFACE WATERS; METALS; SEDIMENTS; ADSORPTION; NTA; MATHEMATICAL MODELS; ADSORPTION ISOTHERMS; 540310; BASIC STUDIES
OSTI ID:
10103764
Research Organizations:
Kernforschungszentrum Karlsruhe GmbH (Germany). Inst. fuer Radiochemie
Country of Origin:
Germany
Language:
German
Other Identifying Numbers:
Other: ON: DE92735324; TRN: DE9111556
Availability:
OSTI; NTIS (US Sales Only)
Submitting Site:
DE
Size:
80 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Horst, J, Donnert, D, and Eberle, S H. Investigations on the interaction between heavy metals, water, and sediment in the presence of NTA; Untersuchungen ueber den Stoffaustausch von Schwermetallen zwischen Sediment und Wasserphase unter dem Einfluss von Nitrilotriessigsaeure. Germany: N. p., 1991. Web.
Horst, J, Donnert, D, & Eberle, S H. Investigations on the interaction between heavy metals, water, and sediment in the presence of NTA; Untersuchungen ueber den Stoffaustausch von Schwermetallen zwischen Sediment und Wasserphase unter dem Einfluss von Nitrilotriessigsaeure. Germany.
Horst, J, Donnert, D, and Eberle, S H. 1991. "Investigations on the interaction between heavy metals, water, and sediment in the presence of NTA; Untersuchungen ueber den Stoffaustausch von Schwermetallen zwischen Sediment und Wasserphase unter dem Einfluss von Nitrilotriessigsaeure." Germany.
@misc{etde_10103764,
title = {Investigations on the interaction between heavy metals, water, and sediment in the presence of NTA; Untersuchungen ueber den Stoffaustausch von Schwermetallen zwischen Sediment und Wasserphase unter dem Einfluss von Nitrilotriessigsaeure}
author = {Horst, J, Donnert, D, and Eberle, S H}
abstractNote = {This study was initiated by the discussion in the FRG about the substitution of phosphorus in detergents by NTA. By doping this, a new problem may arise, the remobilization of heavy metals caused by the discharge of NTA into rivers due to the use of such detergents. Therefore according to primary equilibrium studies in 1984 the concentration of NTA in surface waters in the FRG was limited to 200 {mu}g/l. It was the aim of this research to investigate whether this limit should be revised due to slow kinetics. Remobilization experiments which were carried out in a stirred system with natural sediments showed that this process was finished within 24 hours. This equals the situation of a storm flood. Experiments with non-suspended kaolinite as the sediment phase were carried out regarding both the immobilization of Copper and Zinc as well as the remobilization of Zinc and showed that the processes are developing very slow and did not attain the equilibrium state after several hundred hours. The addition of 850 {mu}g/l NTA duplicated the Zinc concentration in the water. (orig./BBR). [Deutsch] Ausgangspunkt der vorliegenden Untersuchung war die Diskussion in der BRD ueber den Ersatz von Phosphat in den Waschmitteln durch NTA. Durch dessen Einsatz koennte ein anderes Problem akut werden, naemlich die Remobilisierung von Schwermetallen aus den Sedimenten. Deshalb wurde entsprechend frueheren Untersuchungen in durchwirbelten Sedimenten ein kritischer Wert von 200 {mu}g/l NTA festgelegt. Das Ziel dieser Untersuchungen war die Frage, ob dieser kritische Wert aufgrund einer langsamen Kinetik revidiert werden muss. Die Remobilisierung aus aufgewirbeltem Sediment wurde fuer Zink, Kupfer, Blei und Cadmium untersucht und verlaeuft im Zeitmassstab von einigen Stunden bis maximal 24 Stunden ab. Das ist die Situation eines Hochwassers mit starkem Sedimenttransport. Die Beruecksichtigung der Stoffaustauschgeschwindigkeit fuehrt hier zu keinen anderen Schlussfolgerungen als aus der Gleichgewichtsbetrachtung alleine zu ziehen sind. (orig./BBR).}
place = {Germany}
year = {1991}
month = {Aug}
}