Characterisation of Schwertmannite: geochemical interactions with arsenate and chromate and significance in sediments of lignite opencast lakes
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Buch |
| Sprache: | English |
| Veröffentlicht: |
2002
|
| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | Bayreuth, Univ., Diss., 2002. - Auch als Online-Diss. mit der URL: http://nbn-resolving.de/urn:nbn:de:bvb:703-opus-223 |
| Beschreibung: | XIV, 124 S. graph. Darst., Kt. |
Internformat
MARC
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| 100 | 1 | |a Regenspurg, Simona |e Verfasser |4 aut | |
| 245 | 1 | 0 | |a Characterisation of Schwertmannite |b geochemical interactions with arsenate and chromate and significance in sediments of lignite opencast lakes |c Simona Regenspurg |
| 264 | 1 | |c 2002 | |
| 300 | |a XIV, 124 S. |b graph. Darst., Kt. | ||
| 336 | |b txt |2 rdacontent | ||
| 337 | |b n |2 rdamedia | ||
| 338 | |b nc |2 rdacarrier | ||
| 500 | |a Bayreuth, Univ., Diss., 2002. - Auch als Online-Diss. mit der URL: http://nbn-resolving.de/urn:nbn:de:bvb:703-opus-223 | ||
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Datensatz im Suchindex
| _version_ | 1807319662853095424 |
|---|---|
| adam_text |
TABLE
OF
CONTENTS
T
ABLE
OF
C
ONTENTS
L
IST
OF
T
ABLES
IV
L
IST
OF
F
IGURES
V
L
IST
OF
A
BBREVIATIONS
AND
DEFINITIONS
VII
A
BSTRACT
VIII
K
URZFASSUNG
XI
I.
INTRODUCTION
1.
STATE
OF
THE
ART
1
2.
OBJECTIVES
3
3.
ARRANGEMENT
OF
THIS
WORK
3
IL
GEOCHEMICAL
INTERACTIONS
BETWEEN
SCHWERTMANNITE,
CHROMATE
AND
ARSENATE
1.
MOTIVATION
TO
INVESTIGATE
ARSENATE
AND
CHROMATE
6
2.
EFFECTS
OF
ARSENATE
AND
CHROMATE
INCORPORATION
ON
THE
SCHWERTMANNITE
STRUCTURE
8
2.1.
INTRODUCTION
8
2.1.1.
SCHWERTMANNITE
STRUCTURE
AND
FORMATION
8
2.1.2.
INVESTIGATED
OXYANIONS
1
1
2.2.
MATERIALS
AND
METHODS
13
2.2.1.
MINERAL
SYNTHESIS
13
2.2.2.
ANALYTICAL
METHODS
_
14
2.2.3.
STABILITY
EXPERIMENT
14
2.2.4.
ADSORPTION
EXPERIMENT
15
2.2.5.
NATURAL
SPECIMENS
16
2.3.
RESULTS
17
2.3.1.
X-RAY
DIFFRACTION
DATA
17
2.3.2.
PROCESSES
AND
PRODUCTS
OF
SCHWERTMANNITE
SYNTHESIS
19
2.3.3.
CHANGES
IN
SCHWERTMANNITE
SUSPENSIONS
OVER
TIME
AT
PH
2
AND
4
24
-
RELEASE
OF
IRON,
SULFATE,
ARSENATE
AND
CHROMATE
24
-
VARIATION
OF
THE
CRYSTAL
STRUCTURE
24
2.3.4.
ADSORPTION
CAPACITY
FOR
ARSENATE
AND
CHROMATE
26
2.3.5.
ENRICHMENT
OF
AS
AND
CR
IN
NATURAL
SCHWERTMANNITE
27
2.4.
DISCUSSION
28
2.4.1.
TUNNEL
-SULFATE,
-ARSENATE
OR
-CHROMATE
IN
SCHWERTMANNITE
28
2.4.2.
SOLID
SOLUTION
OR
COPRECIPITATION
OF
A
SECONDARY
PHASE
29
-
SUBSTITUTION
OF
SULFUR
IN
MINERALS
29
-
STRUCTURE
AND
STRUCTURAL
CHANGES
OF
SCHWERTMANNITE
AND
ITS
SOLID
SOLUTIONS
_
29
-
FORMATION
OF
SCHWERTMANNITE
AND
SUBSTITUTION
AFFINITIES
31
2.4.3.
INFLUENCE
OF
ARSENATE
AND
CHROMATE
ON
SCHWERTMANNITE
STABILITY
33
2.4.4.
ADSORPTION
PROCESS
36
2.5.
CONCLUSIONS
38
TABLE
OF
CONTENTS
3.
A
FTIR
SPECTROSCOPICAL
STUDY
TO
EXPLAIN
BONDING
STRUCTURES
OF
OXYANIONS
IN
SCHWERTMANNITE
3.1.
INTRODUCTION
39
3.2.
MATERIALS
AND
METHODS
41
3.3.
RESULTS
43
3.4.
DISCUSSION
46
3.4.1.
SULFATE
BOUND
TO
SCHWERTMANNITE
46
3.4.2.
CHROMATE
BOUND
TO
SCHWERTMANNITE
47
3.4.3.
ARSENATE
BOUND
TO
SCHWERTMANNITE
48
3.5.
CONCLUSIONS
50
4.
INCORPORATION
OF
AS(III)
IN
SCHWERTMANNITE
4.1.
INTRODUCTION
:
SIGNIFICANCE
OF
ARSENITE
51
4.2.
MATERIALS
AND
METHODS
52
4.3.
RESULTS
AND
DISCUSSION
53
4.3.1.
ARSENITE
IN
THE
AMD
WATER
OF
THE
SAALFELDER-FEENGROTTEN
53
4.3.2.
ARSENITE
ASSOCIATED
WITH
SCHWERTMANNITE:
COPRECIPITATION
AND
ADSORPTION
53
4.3.3.
DISTINCTION
OF
THE
OXIDATION
STATE
OF
ARSENIC
BY
FTIR
SPECTROSCOPY
54
5.
MOBILIZATION
OF
ARSENATE
AND
CHROMATE
DURING
MICROBIAL
REDUCTION
OF
SCHWERTMANNITE
5.1.
INTRODUCTION
56
5.2.
MATERIALS
AND
METHODS
57
5.2.1.
PREPARATION
OF
SCHWERTMANNITE
SPECIMENS
57
5.2.2.
MICROBIAL
REDUCTION
OF
SCHWERTMANNITE
SAMPLES
57
5.2.3.
ANALYTICAL
TECHNIQUES
58
5.3.
RESULTS
58
5.3.1.
CHARACTERIZATION
OF
UNINOCULATED
SCHWERTMANNITE
SAMPLES
58
5.3.2.
MICROBIAL
REDUCTION
OF
SCHWERTMANNITE
SAMPLES
61
5.3.3.
EFFECT
OF
MICROBIAL
FE(LLL)
REDUCTION
ON
THE
RELEASE
OF
OXYANIONS
62
5.4.
DISCUSSION
62
5.5.
CONCLUSIONS
64
6.
SURFACE
CHARACTERISTICS
OF
SCHWERTMANNITE
6.1.
SURFACE
SIZE,
-MORPHOLOGY
AND
-CHARGE
65
6.1.1.
INTRODUCTION
65
6.1.2.
MATERIALS
AND
METHODS
66
6.1.3.
RESULTS
AND
INTERPRETATION
68
-
PARTICLE
MORPHOLOGIE
AND
SURFACE
SIZE
68
-
SURFACE
CHARGE
AND
POINT
OF
ZERO
CHARGE
69
6.2.
ACID-BASE
TITRATION
71
6.2.1.
INTRODUCTION:
ADSORPTION
OF
ARSENATE
AND
CHROMATE
71
6.2.2.
METHOD:
BATCH
EXPERIMENT
73
6.2.3.
RESULTS
AND
DISCUSSION
74
-
TITRATION
CURVES
76
-
ADSORPTION
ISOTHERMS
80
6.3.
SUMMARY
AND
DISCUSSION
81
TABLE
OF
CONTENTS
III.
FORMATION
AND
TRANSFORMATION
OF
SCHWERTMANNITE
IN
SEDIMENTS
OF
ACID
LIGNITE
OPENCAST
LAKES
1.
INTRODUCTION
83
2.
MATERIALS
AND
METHODS
85
2.1
STUDY
SITES
85
2.2.
SAMPLING
86
2.3.
ANALYTICAL
METHODS
87
2.4.
GEOCHEMICAL
MODELING
89
2.5.
SYNTHETIC
SAMPLES
90
2.6.
STABILITY
EXPERIMENT
90
3.
RESULTS
91
3.1.
HYDROCHEMISTRY
OF
ACIDIC
MINING
LAKES
(AML)
_
91
3.2.
COMPOSITION
OF
THE
UPPER
SEDIMENT
LAYERS
93
3.3.
COLLOID
ANALYSIS
OF
SURFACE
WATERS
96
3.4.
DEPTH-DEPENDENT
ALTERATION
OF
THE
SEDIMENT
COMPOSITION
(ML
77)
96
3.5.
SYNTHETIC
SCHWERTMANNITE
97
3.6.
STABILITY
OF
SCHWERTMANNITE
IN
DEPENDENCE
ON
TIME
97
4.
DISCUSSION
99
4.1.
OCCURRENCE
OF
SCHWERTMANNITE
IN
ACIDIC
MINING
LAKES
(AML)
99
4.2.
PROCESSES
REGULATING
THE
MINERALOGY
OF
IRON
IN
AML
99
43.
THE
REGULATION
OF
THE
PH
IN
AML
104
5.
CONCLUSIONS
106
IV.
SUMMARY
AND
CONCLUSIONS
107
V.
REFERENCES
109
ACKNOWLEDGEMENTS
115
APPENDIX
A)
XRD-PATTEM
FE(III)
HYDROXIDES
CONTAINING
SULFATE
AND/
OR
PHOSPHATE
B)
AS
AND
CR
IN
PRECIPITATES
AND
IN
WATER
SAMPLES
OF
2
FORMER
MINES
C)
FTIR
SPECTRA
OF
THE
SCHWERTMANNITE-STABILITY
EXPERIMENTS
(11.2
AND
III.)
D)
SCANNING
ELECTRON
MICROGRAPHS
OF
SYNTHETIC
FE(III)
PRECIPITATES
E)
ACID-BASE
TITRATION:
DATA
OF
1
1.6.2
F)
SURFACE
WATER
ANALYSIS
OF
THE
MINING
LAKES
G)
PHREEQC:
SOME
CALCULATED
SPECIES
IN
SURFACE
WATERS
OF
THE
MINING
LAKES
H)
.
ULTRAFILTRATION
I)
SCHWERTMANNITE
STABILITY:
RELEASE
OF
SULFATE
AND
IRON
DURING
362
DAYS
HI |
| any_adam_object | 1 |
| author | Regenspurg, Simona |
| author_facet | Regenspurg, Simona |
| author_role | aut |
| author_sort | Regenspurg, Simona |
| author_variant | s r sr |
| building | Verbundindex |
| bvnumber | BV016467200 |
| classification_rvk | RB 10115 |
| ctrlnum | (OCoLC)643886164 (DE-599)BVBBV016467200 |
| discipline | Geographie |
| format | Book |
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| genre | (DE-588)4113937-9 Hochschulschrift gnd-content |
| genre_facet | Hochschulschrift |
| id | DE-604.BV016467200 |
| illustrated | Illustrated |
| indexdate | 2024-08-14T00:12:22Z |
| institution | BVB |
| language | English |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-010181344 |
| oclc_num | 643886164 |
| open_access_boolean | |
| owner | DE-703 DE-12 |
| owner_facet | DE-703 DE-12 |
| physical | XIV, 124 S. graph. Darst., Kt. |
| publishDate | 2002 |
| publishDateSearch | 2002 |
| publishDateSort | 2002 |
| record_format | marc |
| spelling | Regenspurg, Simona Verfasser aut Characterisation of Schwertmannite geochemical interactions with arsenate and chromate and significance in sediments of lignite opencast lakes Simona Regenspurg 2002 XIV, 124 S. graph. Darst., Kt. txt rdacontent n rdamedia nc rdacarrier Bayreuth, Univ., Diss., 2002. - Auch als Online-Diss. mit der URL: http://nbn-resolving.de/urn:nbn:de:bvb:703-opus-223 Hydrochemie (DE-588)4072678-2 gnd rswk-swf Chromate (DE-588)4318015-2 gnd rswk-swf Umwelttoxikologie (DE-588)4121813-9 gnd rswk-swf Schwertmannit (DE-588)4721783-2 gnd rswk-swf Braunkohlentagebau (DE-588)4008059-6 gnd rswk-swf Sulfate (DE-588)4138384-9 gnd rswk-swf Arsenate (DE-588)4143079-7 gnd rswk-swf Geochemie (DE-588)4020198-3 gnd rswk-swf Adsorption (DE-588)4000536-7 gnd rswk-swf Tagebaurestsee (DE-588)4557631-2 gnd rswk-swf Eisenhydroxide (DE-588)4151544-4 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Braunkohlentagebau (DE-588)4008059-6 s Tagebaurestsee (DE-588)4557631-2 s Hydrochemie (DE-588)4072678-2 s Schwertmannit (DE-588)4721783-2 s Geochemie (DE-588)4020198-3 s DE-604 Adsorption (DE-588)4000536-7 s Arsenate (DE-588)4143079-7 s Chromate (DE-588)4318015-2 s Umwelttoxikologie (DE-588)4121813-9 s Eisenhydroxide (DE-588)4151544-4 s Sulfate (DE-588)4138384-9 s 1\p DE-604 DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=010181344&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis 1\p cgwrk 20201028 DE-101 https://d-nb.info/provenance/plan#cgwrk |
| spellingShingle | Regenspurg, Simona Characterisation of Schwertmannite geochemical interactions with arsenate and chromate and significance in sediments of lignite opencast lakes Hydrochemie (DE-588)4072678-2 gnd Chromate (DE-588)4318015-2 gnd Umwelttoxikologie (DE-588)4121813-9 gnd Schwertmannit (DE-588)4721783-2 gnd Braunkohlentagebau (DE-588)4008059-6 gnd Sulfate (DE-588)4138384-9 gnd Arsenate (DE-588)4143079-7 gnd Geochemie (DE-588)4020198-3 gnd Adsorption (DE-588)4000536-7 gnd Tagebaurestsee (DE-588)4557631-2 gnd Eisenhydroxide (DE-588)4151544-4 gnd |
| subject_GND | (DE-588)4072678-2 (DE-588)4318015-2 (DE-588)4121813-9 (DE-588)4721783-2 (DE-588)4008059-6 (DE-588)4138384-9 (DE-588)4143079-7 (DE-588)4020198-3 (DE-588)4000536-7 (DE-588)4557631-2 (DE-588)4151544-4 (DE-588)4113937-9 |
| title | Characterisation of Schwertmannite geochemical interactions with arsenate and chromate and significance in sediments of lignite opencast lakes |
| title_auth | Characterisation of Schwertmannite geochemical interactions with arsenate and chromate and significance in sediments of lignite opencast lakes |
| title_exact_search | Characterisation of Schwertmannite geochemical interactions with arsenate and chromate and significance in sediments of lignite opencast lakes |
| title_full | Characterisation of Schwertmannite geochemical interactions with arsenate and chromate and significance in sediments of lignite opencast lakes Simona Regenspurg |
| title_fullStr | Characterisation of Schwertmannite geochemical interactions with arsenate and chromate and significance in sediments of lignite opencast lakes Simona Regenspurg |
| title_full_unstemmed | Characterisation of Schwertmannite geochemical interactions with arsenate and chromate and significance in sediments of lignite opencast lakes Simona Regenspurg |
| title_short | Characterisation of Schwertmannite |
| title_sort | characterisation of schwertmannite geochemical interactions with arsenate and chromate and significance in sediments of lignite opencast lakes |
| title_sub | geochemical interactions with arsenate and chromate and significance in sediments of lignite opencast lakes |
| topic | Hydrochemie (DE-588)4072678-2 gnd Chromate (DE-588)4318015-2 gnd Umwelttoxikologie (DE-588)4121813-9 gnd Schwertmannit (DE-588)4721783-2 gnd Braunkohlentagebau (DE-588)4008059-6 gnd Sulfate (DE-588)4138384-9 gnd Arsenate (DE-588)4143079-7 gnd Geochemie (DE-588)4020198-3 gnd Adsorption (DE-588)4000536-7 gnd Tagebaurestsee (DE-588)4557631-2 gnd Eisenhydroxide (DE-588)4151544-4 gnd |
| topic_facet | Hydrochemie Chromate Umwelttoxikologie Schwertmannit Braunkohlentagebau Sulfate Arsenate Geochemie Adsorption Tagebaurestsee Eisenhydroxide Hochschulschrift |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=010181344&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| work_keys_str_mv | AT regenspurgsimona characterisationofschwertmannitegeochemicalinteractionswitharsenateandchromateandsignificanceinsedimentsofligniteopencastlakes |