Unknown

Dataset Information

0

Impact of an in-situ Cr(VI)-contaminated site remediation on the groundwater.

ABSTRACT: This study presents the latest results of the groundwater monitoring of a research project, which tested an innovative pump and treat method in combination with an in-situ remediation. This technique was assessed on an abandoned site in Austria, where two hot spots of hexavalent chromium (Cr(VI)) were located. For the in-situ remediation, a strong reducing agent (sodium dithionite) was injected into the underground to reduce Cr(VI) to Cr(III) by using different injection strategies. Throughout this treatment, part of the Cr(VI) is mobilized and not instantly reduced. To prevent a further spreading of the mobilized Cr(VI), the pump and treat method, which uses zero-valent iron to clean the groundwater, was installed downgradient of the hot spots. Based on the groundwater sample analyses, it was possible to distinguish different remediation phases, characterized by excess chromate and excess sulfite. During the excess sulfite conditions, Cr(VI) was successfully removed from the system, but after terminating the sodium dithionite injection, the Cr(VI) rebounded.

SUBMITTER: Sedlazeck KP 

PROVIDER: S-EPMC7190687 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature

Json Xml
altmetric image

Publications

Impact of an in-situ Cr(VI)-contaminated site remediation on the groundwater.

Sedlazeck Klaus Philipp KP   Vollprecht Daniel D   Müller Peter P   Mischitz Robert R   Gieré Reto R  

Environmental science and pollution research international 20200114 13

This study presents the latest results of the groundwater monitoring of a research project, which tested an innovative pump and treat method in combination with an in-situ remediation. This technique was assessed on an abandoned site in Austria, where two hot spots of hexavalent chromium (Cr(VI)) were located. For the in-situ remediation, a strong reducing agent (sodium dithionite) was injected into the underground to reduce Cr(VI) to Cr(III) by using different injection strategies. Throughout t  ...[more]

Similar Datasets

Unknown Groundwater contaminated with hexavalent chromium [Cr (VI)]: a health survey and clinical examination of community inhabitants (Kanpur, India).
| S-EPMC3480439 | biostudies-literature
Unknown Pore-scale investigation of the use of reactive nanoparticles for in situ remediation of contaminated groundwater source.
| S-EPMC7306790 | biostudies-literature
Unknown Remediation of zinc-contaminated groundwater by iron oxide in situ adsorption barriers - From lab to the field.
| S-EPMC8724622 | biostudies-literature
Unknown Sustainable remediation: electrochemically assisted microbial dechlorination of tetrachloroethene-contaminated groundwater.
| S-EPMC3896933 | biostudies-literature
Unknown Remediation of Cr(VI)-Contaminated Soil by Biochar-Supported Nanoscale Zero-Valent Iron and the Consequences for Indigenous Microbial Communities.
| S-EPMC9565499 | biostudies-literature
Unknown Resistance of solid-phase U(VI) to microbial reduction during in situ bioremediation of uranium-contaminated groundwater.
| S-EPMC535208 | biostudies-other
Unknown Coffee Grounds-Derived CNPs for Efficient Cr(VI) Water Remediation.
| S-EPMC8143114 | biostudies-literature
Unknown Biochar/Biopolymer Composites for Potential In Situ Groundwater Remediation.
| S-EPMC11355651 | biostudies-literature
Unknown Complete genome sequence of Pseudomonas stutzeri strain RCH2 isolated from a Hexavalent Chromium [Cr(VI)] contaminated site.
| S-EPMC5299692 | biostudies-literature
Unknown Alleviating Cr(VI) stress in horse gram (Macrotyloma uniflorum Var. Madhu) by native Cr-tolerant nodule endophytes isolated from contaminated site of Sukinda.
| S-EPMC7896553 | biostudies-literature