|
Records |
Links |
|
Author |
Hu, K.; Wang, Q.; Tao, G.; Wang, A.; Ding, D. |
|
|
Title |
Experimental Study on Restoration of Polluted Groundwater from in Situ Leaching Uranium Mining with Sulfate Reducing Bacteria and ZVI-SRB |
Type |
Journal Article |
|
Year |
2011 |
Publication |
Procedia Earth and Planetary Science |
Abbreviated Journal |
|
|
|
Volume |
2 |
Issue |
|
Pages |
150-155 |
|
|
Keywords |
In situ leaching of uranium, nitrate radical, sulfate radical, Sulfate-Reducing Bacteria (SRB), Zero Valent Iron (ZVI) |
|
|
Abstract |
In the case of in situ leaching of uranium, the primitive geochemical environment for groundwater is changed since leachant is injected into the water beaving uranium deposit. This increases the concentration of uranium and results in the groundwater contamination.Microbial reduction technology by Sulfate reducing bacteria and Zero Valent Iron were employed to treat uranium wastewater. The experiments were conducted to evaluate the influence of anion (sulfate and nitrate) on dealing with uranium wastewater. Experimental results show that the utilization of both SRB system and ZVI – SRB system to process uranium wastewater is affected by sulfate ion and nitrate ion. As the concentration of sulfate radical is lower than 4000mg/L, sulfate-reducing bacteria has no influence on precipitated uranium. However, as the concentration of sulfate is more than 6,000mg/L, uranium removal rate decreases significantly, from 80% to 14.1%. When adding sulfate radical on ZVI – SRB system to process uranium wastewater, its uranium removal rate is higher than SRB system. Low concentration of nitrate contributes to reduction metabolism of SRB. High concentration of nitrate inhibits the growth and metabolism of SRB and affects the treatment efficiency of uranium wastewater. When the concentration of nitrate reaches 1500mg/L, uranium removal rate is less than 0.1%. Nevertheless, as the concentration of nitrate is lower than 1000mg/L, uranium removal rate could reach more than 75%. As existence of nitrate radical, uranium removal rate of SRB by adding ZVI is higher than that without adding. |
|
|
Address |
|
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
|
Place of Publication |
|
Editor |
|
|
|
Language |
|
Summary Language |
|
Original Title |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
1878-5220 |
ISBN |
|
Medium |
|
|
|
Area |
|
Expedition |
|
Conference |
|
|
|
Notes |
|
Approved |
no |
|
|
Call Number |
THL @ christoph.kuells @ hu_experimental_2011 |
Serial |
202 |
|
Permanent link to this record |
|
|
|
|
Author |
Külls, C.H.; Eichinger, F.; Fader, H.J.; Leistert, H.; Lorenz, G.; Szakacs, E. |
|
|
Title |
New Environmental Analytical Techniques to Monitor Carbon Sequestration |
Type |
Conference Article |
|
Year |
2011 |
Publication |
1st EAGE Sustainable Earth Sciences (SES) Conference and Exhibition |
Abbreviated Journal |
|
|
|
Volume |
|
Issue |
|
Pages |
268 |
|
|
Keywords |
|
|
|
Abstract |
|
|
|
Address |
|
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
|
Place of Publication |
|
Editor |
|
|
|
Language |
|
Summary Language |
|
Original Title |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
|
ISBN |
|
Medium |
|
|
|
Area |
|
Expedition |
|
Conference |
European Association of Geoscientists & Engineers |
|
|
Notes |
|
Approved |
no |
|
|
Call Number |
THL @ christoph.kuells @ Kuells2011new |
Serial |
47 |
|
Permanent link to this record |
|
|
|
|
Author |
Frey, S.; Külls, C.; Schlosser, C. |
|
|
Title |
New Hydrological Age-Dating techniques using cosmogenic radionuclides Beryllium-7 and Sodium-22 |
Type |
Conference Article |
|
Year |
2011 |
Publication |
Proc. IAEA Conf. Monacco |
Abbreviated Journal |
|
|
|
Volume |
|
Issue |
|
Pages |
|
|
|
Keywords |
|
|
|
Abstract |
|
|
|
Address |
|
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
|
Place of Publication |
|
Editor |
|
|
|
Language |
|
Summary Language |
|
Original Title |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
|
ISBN |
|
Medium |
|
|
|
Area |
|
Expedition |
|
Conference |
|
|
|
Notes |
|
Approved |
no |
|
|
Call Number |
THL @ christoph.kuells @ Frey2011new |
Serial |
48 |
|
Permanent link to this record |
|
|
|
|
Author |
Brook, G.A.; Railsback, L.B.; Marais, E. |
|
|
Title |
Reassessment of carbonate ages by dating both carbonate and organic material from an Etosha Pan (Namibia) stromatolite: Evidence of humid phases during the last 20ka |
Type |
Journal Article |
|
Year |
2011 |
Publication |
Quaternary International |
Abbreviated Journal |
|
|
|
Volume |
229 |
Issue |
1 |
Pages |
24-37 |
|
|
Keywords |
|
|
|
Abstract |
Previous research on lacustrine stromatolites from Etosha Pan in Namibia obtained ages on carbonate close to or beyond the limits of radiocarbon dating. These ages suggested that the basin was likely not subject to extensive flooding during the last ca. 40ka. This study shows that AMS radiocarbon ages for the carbonate of a stromatolite from Poacher’s Point are 15–21ka older than ages for organic material in the stromatolite structure. Calibrated ages range from 30 to 40ka for carbonate and 3–19ka for the organic residue. The new ages, together with petrographic and isotopic data for the stromatolite, have provided important new information on past flooding of Etosha Pan including evidence of prolonged lacustrine conditions during the Holocene Climatic Optimum. |
|
|
Address |
|
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
|
Place of Publication |
|
Editor |
|
|
|
Language |
|
Summary Language |
|
Original Title |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
1040-6182 |
ISBN |
|
Medium |
|
|
|
Area |
|
Expedition |
|
Conference |
|
|
|
Notes |
|
Approved |
no |
|
|
Call Number |
THL @ christoph.kuells @ brook_reassessment_2011 |
Serial |
110 |
|
Permanent link to this record |
|
|
|
|
Author |
Külls, C. |
|
|
Title |
Rekonstruktion hydrologischer Extreme in der Namibwüste |
Type |
Journal Article |
|
Year |
2011 |
Publication |
Berichte der naturforschenden Gesellschaft zu Freiburg im Breisgau |
Abbreviated Journal |
|
|
|
Volume |
|
Issue |
101 |
Pages |
69-81 |
|
|
Keywords |
|
|
|
Abstract |
|
|
|
Address |
|
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
|
Place of Publication |
|
Editor |
|
|
|
Language |
|
Summary Language |
|
Original Title |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
|
ISBN |
|
Medium |
|
|
|
Area |
|
Expedition |
|
Conference |
|
|
|
Notes |
|
Approved |
no |
|
|
Call Number |
THL @ christoph.kuells @ |
Serial |
71 |
|
Permanent link to this record |