JP2013180924A - セレン酸化合物の還元方法、セレンの分離回収方法 - Google Patents
セレン酸化合物の還元方法、セレンの分離回収方法 Download PDFInfo
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- JP2013180924A JP2013180924A JP2012045425A JP2012045425A JP2013180924A JP 2013180924 A JP2013180924 A JP 2013180924A JP 2012045425 A JP2012045425 A JP 2012045425A JP 2012045425 A JP2012045425 A JP 2012045425A JP 2013180924 A JP2013180924 A JP 2013180924A
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- selenate
- reducing
- aqueous solution
- selenium
- compound
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- -1 selenic acid compound Chemical class 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 41
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 title claims description 58
- 239000011669 selenium Substances 0.000 title claims description 41
- 229910052711 selenium Inorganic materials 0.000 title claims description 39
- 238000000926 separation method Methods 0.000 title claims description 8
- 238000011084 recovery Methods 0.000 title description 3
- 241000894006 Bacteria Species 0.000 claims abstract description 44
- 239000007864 aqueous solution Substances 0.000 claims abstract description 44
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 38
- 230000001603 reducing effect Effects 0.000 claims abstract description 30
- 238000012258 culturing Methods 0.000 claims abstract description 11
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 229940006163 selenate ion Drugs 0.000 claims description 8
- MCAHWIHFGHIESP-UHFFFAOYSA-L selenite(2-) Chemical compound [O-][Se]([O-])=O MCAHWIHFGHIESP-UHFFFAOYSA-L 0.000 claims description 8
- 150000003346 selenoethers Chemical class 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 6
- 229940005981 selenite ion Drugs 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 12
- 229910052760 oxygen Inorganic materials 0.000 abstract description 12
- 239000001301 oxygen Substances 0.000 abstract description 12
- 239000000243 solution Substances 0.000 abstract description 10
- 230000007935 neutral effect Effects 0.000 abstract description 3
- QYHFIVBSNOWOCQ-UHFFFAOYSA-N selenic acid Chemical compound O[Se](O)(=O)=O QYHFIVBSNOWOCQ-UHFFFAOYSA-N 0.000 abstract description 2
- 229940091258 selenium supplement Drugs 0.000 description 35
- 238000006722 reduction reaction Methods 0.000 description 33
- 229940082569 selenite Drugs 0.000 description 9
- 150000002500 ions Chemical class 0.000 description 8
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 6
- 238000003723 Smelting Methods 0.000 description 5
- 239000002609 medium Substances 0.000 description 5
- 239000002244 precipitate Substances 0.000 description 5
- 229940000207 selenious acid Drugs 0.000 description 5
- MCAHWIHFGHIESP-UHFFFAOYSA-N selenous acid Chemical compound O[Se](O)=O MCAHWIHFGHIESP-UHFFFAOYSA-N 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 239000007800 oxidant agent Substances 0.000 description 4
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000001963 growth medium Substances 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- 235000002639 sodium chloride Nutrition 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- 229940123973 Oxygen scavenger Drugs 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 229940041514 candida albicans extract Drugs 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- 239000001103 potassium chloride Substances 0.000 description 2
- 235000011164 potassium chloride Nutrition 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 description 2
- 235000011152 sodium sulphate Nutrition 0.000 description 2
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 description 2
- 239000012138 yeast extract Substances 0.000 description 2
- PMYDPQQPEAYXKD-UHFFFAOYSA-N 3-hydroxy-n-naphthalen-2-ylnaphthalene-2-carboxamide Chemical compound C1=CC=CC2=CC(NC(=O)C3=CC4=CC=CC=C4C=C3O)=CC=C21 PMYDPQQPEAYXKD-UHFFFAOYSA-N 0.000 description 1
- 241001673109 Anaerobacillus arseniciselenatis Species 0.000 description 1
- 241000359246 Bordetella petrii Species 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 241000588697 Enterobacter cloacae Species 0.000 description 1
- 241000589614 Pseudomonas stutzeri Species 0.000 description 1
- 230000010757 Reduction Activity Effects 0.000 description 1
- 241001263191 Selenihalanaerobacter shriftii Species 0.000 description 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- 241000122973 Stenotrophomonas maltophilia Species 0.000 description 1
- 241000168710 Sulfurospirillum barnesii Species 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 235000011148 calcium chloride Nutrition 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 235000014380 magnesium carbonate Nutrition 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 235000019796 monopotassium phosphate Nutrition 0.000 description 1
- 229910000402 monopotassium phosphate Inorganic materials 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- PJNZPQUBCPKICU-UHFFFAOYSA-N phosphoric acid;potassium Chemical compound [K].OP(O)(O)=O PJNZPQUBCPKICU-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- SPVXKVOXSXTJOY-UHFFFAOYSA-N selane Chemical compound [SeH2] SPVXKVOXSXTJOY-UHFFFAOYSA-N 0.000 description 1
- 229940065287 selenium compound Drugs 0.000 description 1
- 150000003343 selenium compounds Chemical class 0.000 description 1
- 125000003748 selenium group Chemical group *[Se]* 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000011655 sodium selenate Substances 0.000 description 1
- 235000018716 sodium selenate Nutrition 0.000 description 1
- 229960001881 sodium selenate Drugs 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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- Preparation Of Compounds By Using Micro-Organisms (AREA)
Abstract
【解決手段】セレン酸化合物を含有する水溶液中におけるセレン酸化合物の還元方法であって、水溶液中に還元剤を添加し、その還元剤の共存下においてセレン酸還元菌を培養する。
【選択図】 なし
Description
(1)Thaurea selenatis 用のATCC(American Type Culture Collection)指定培地(NaCl:1.2g/l, KCl:0.4g/l, NH4Cl:0.3g/l, KH2PO4:0.2g/l, Na2SO4:0.3g/l, MgCO3・H2O:0.4g/l, CaCl2・2H2O:0.15g/l, NaHCO3:0.6g/l, Yeast抽出物:0.4g/l, CH3COONa:0.82g/l)35mlに、セレン酸還元菌であるThaurea selenatisを3.39×107セル/ml、セレン酸ナトリウムとしてセレン(VI)を8mg/l、硫酸ナトリウムとして硫酸イオン20g/l、塩化ナトリウムとして塩化物イオン10g/lを添加し、さらにpHを7.5〜8.0の範囲に調整した。
実施例1と同一の条件で培養する過程において、硫酸を添加して水溶液のpHを6.5〜7.5の範囲とし、72時間維持してセレン酸還元菌を培養した。
水溶液のpHを8としたこと以外は、実施例1と同一の条件で培養を行った。
鉄粉を水溶液中に添加しなかったこと以外は、実施例1と同一の条件で培養を行った。
セレン還元菌を使用しなかったこと以外は、実施例1と同一の条件でセレン酸イオンを還元させた。
Claims (5)
- セレン酸化合物を含有する水溶液中における該セレン酸化合物の還元方法であって、
上記水溶液中に還元剤を添加し、該還元剤の共存下においてセレン酸還元菌を培養することを特徴とするセレン酸化合物の還元方法。 - 上記セレン酸化合物は、上記水溶液中において亜セレン酸イオン及びセレン酸イオンの形態で存在することを特徴とする請求項1記載のセレン酸化合物の還元方法。
- 上記還元剤が鉄粉であることを特徴とする請求項1又は2記載のセレン酸化合物の還元方法。
- 上記セレン酸還元菌を培養する際の上記水溶液のpHを6.5〜7.5の範囲に維持することを特徴とする請求項1乃至3の何れか1項記載のセレン酸化合物の還元方法。
- セレン酸化合物を含有する水溶液からセレンを分離回収する方法であって、
上記水溶液中に還元剤を添加し、該還元剤の共存下でセレン酸還元菌を培養し、
上記セレン酸還元菌によって上記セレン酸化合物を還元して得られた金属セレン又はセレン化物を固液分離する
ことを特徴とするセレンの分離回収方法。
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2019171374A (ja) * | 2018-03-28 | 2019-10-10 | 日鉄環境株式会社 | セレン含有水の処理方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09122687A (ja) * | 1995-10-31 | 1997-05-13 | Kurita Water Ind Ltd | セレン含有水の処理方法 |
JPH09187790A (ja) * | 1996-01-05 | 1997-07-22 | Kurita Water Ind Ltd | セレン含有水の処理方法 |
JP2007289912A (ja) * | 2006-03-30 | 2007-11-08 | Central Res Inst Of Electric Power Ind | 微生物によるセレン酸化合物含有排水の処理方法 |
JP2008012461A (ja) * | 2006-07-07 | 2008-01-24 | Central Res Inst Of Electric Power Ind | 微生物を利用したセレン酸化合物含有液の処理方法 |
JP2010041954A (ja) * | 2008-08-12 | 2010-02-25 | Central Res Inst Of Electric Power Ind | 微生物を利用した排水処理方法 |
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2012
- 2012-03-01 JP JP2012045425A patent/JP5739366B2/ja active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09122687A (ja) * | 1995-10-31 | 1997-05-13 | Kurita Water Ind Ltd | セレン含有水の処理方法 |
JPH09187790A (ja) * | 1996-01-05 | 1997-07-22 | Kurita Water Ind Ltd | セレン含有水の処理方法 |
JP2007289912A (ja) * | 2006-03-30 | 2007-11-08 | Central Res Inst Of Electric Power Ind | 微生物によるセレン酸化合物含有排水の処理方法 |
JP2008012461A (ja) * | 2006-07-07 | 2008-01-24 | Central Res Inst Of Electric Power Ind | 微生物を利用したセレン酸化合物含有液の処理方法 |
JP2010041954A (ja) * | 2008-08-12 | 2010-02-25 | Central Res Inst Of Electric Power Ind | 微生物を利用した排水処理方法 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019171374A (ja) * | 2018-03-28 | 2019-10-10 | 日鉄環境株式会社 | セレン含有水の処理方法 |
JP7191753B2 (ja) | 2018-03-28 | 2022-12-19 | 日鉄環境株式会社 | セレン含有水の処理方法 |
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