SU434644A3 - Способ очистки водных растворов от ионов тяжелых металлов - Google Patents
Способ очистки водных растворов от ионов тяжелых металловInfo
- Publication number
- SU434644A3 SU434644A3 SU1745739A SU1745739A SU434644A3 SU 434644 A3 SU434644 A3 SU 434644A3 SU 1745739 A SU1745739 A SU 1745739A SU 1745739 A SU1745739 A SU 1745739A SU 434644 A3 SU434644 A3 SU 434644A3
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- thiol compound
- carbon
- thiol
- solid
- composition
- Prior art date
Links
- 150000002500 ions Chemical class 0.000 title claims abstract description 5
- 238000000034 method Methods 0.000 title claims description 6
- 229910001385 heavy metal Inorganic materials 0.000 title claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract 2
- 238000004140 cleaning Methods 0.000 title description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 13
- -1 thiol compound Chemical class 0.000 claims abstract description 9
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 239000003575 carbonaceous material Substances 0.000 claims abstract 3
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 6
- 229910052753 mercury Inorganic materials 0.000 claims description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 4
- 239000003463 adsorbent Substances 0.000 claims description 4
- 229910052717 sulfur Inorganic materials 0.000 claims description 4
- 239000011593 sulfur Substances 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 2
- 150000002894 organic compounds Chemical class 0.000 claims description 2
- 238000000746 purification Methods 0.000 claims description 2
- LDVVMCZRFWMZSG-OLQVQODUSA-N (3ar,7as)-2-(trichloromethylsulfanyl)-3a,4,7,7a-tetrahydroisoindole-1,3-dione Chemical compound C1C=CC[C@H]2C(=O)N(SC(Cl)(Cl)Cl)C(=O)[C@H]21 LDVVMCZRFWMZSG-OLQVQODUSA-N 0.000 claims 1
- 239000005745 Captan Substances 0.000 claims 1
- 125000001931 aliphatic group Chemical group 0.000 claims 1
- 239000007864 aqueous solution Substances 0.000 claims 1
- 125000003118 aryl group Chemical group 0.000 claims 1
- 229940117949 captan Drugs 0.000 claims 1
- 125000002950 monocyclic group Chemical group 0.000 claims 1
- DNJIEGIFACGWOD-UHFFFAOYSA-N ethyl mercaptane Natural products CCS DNJIEGIFACGWOD-UHFFFAOYSA-N 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 7
- 239000002351 wastewater Substances 0.000 abstract description 5
- 239000002250 absorbent Substances 0.000 abstract 4
- 230000002745 absorbent Effects 0.000 abstract 4
- 239000007787 solid Substances 0.000 abstract 4
- 239000007788 liquid Substances 0.000 abstract 3
- RMVRSNDYEFQCLF-UHFFFAOYSA-N thiophenol Chemical compound SC1=CC=CC=C1 RMVRSNDYEFQCLF-UHFFFAOYSA-N 0.000 abstract 3
- 239000012530 fluid Substances 0.000 abstract 2
- 229920003023 plastic Polymers 0.000 abstract 2
- 239000004033 plastic Substances 0.000 abstract 2
- SUVIGLJNEAMWEG-UHFFFAOYSA-N propane-1-thiol Chemical compound CCCS SUVIGLJNEAMWEG-UHFFFAOYSA-N 0.000 abstract 2
- 125000006729 (C2-C5) alkenyl group Chemical group 0.000 abstract 1
- 125000000217 alkyl group Chemical group 0.000 abstract 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 abstract 1
- 239000006260 foam Substances 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 150000002739 metals Chemical class 0.000 abstract 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 abstract 1
- LSDPWZHWYPCBBB-UHFFFAOYSA-N methyl mercaptane Natural products SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 abstract 1
- 150000003440 styrenes Chemical class 0.000 abstract 1
- 229920003002 synthetic resin Polymers 0.000 abstract 1
- 239000000057 synthetic resin Substances 0.000 abstract 1
- 150000003573 thiols Chemical class 0.000 abstract 1
- 229920002554 vinyl polymer Polymers 0.000 abstract 1
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 150000002731 mercury compounds Chemical class 0.000 description 1
- 238000009856 non-ferrous metallurgy Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28002—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their physical properties
- B01J20/28004—Sorbent size or size distribution, e.g. particle size
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3202—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the carrier, support or substrate used for impregnation or coating
- B01J20/3204—Inorganic carriers, supports or substrates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
- B01J20/3242—Layers with a functional group, e.g. an affinity material, a ligand, a reactant or a complexing group
- B01J20/3244—Non-macromolecular compounds
- B01J20/3246—Non-macromolecular compounds having a well defined chemical structure
- B01J20/3248—Non-macromolecular compounds having a well defined chemical structure the functional group or the linking, spacer or anchoring group as a whole comprising at least one type of heteroatom selected from a nitrogen, oxygen or sulfur, these atoms not being part of the carrier as such
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
- B01J20/3242—Layers with a functional group, e.g. an affinity material, a ligand, a reactant or a complexing group
- B01J20/3244—Non-macromolecular compounds
- B01J20/3246—Non-macromolecular compounds having a well defined chemical structure
- B01J20/3248—Non-macromolecular compounds having a well defined chemical structure the functional group or the linking, spacer or anchoring group as a whole comprising at least one type of heteroatom selected from a nitrogen, oxygen or sulfur, these atoms not being part of the carrier as such
- B01J20/3253—Non-macromolecular compounds having a well defined chemical structure the functional group or the linking, spacer or anchoring group as a whole comprising at least one type of heteroatom selected from a nitrogen, oxygen or sulfur, these atoms not being part of the carrier as such comprising a cyclic structure not containing any of the heteroatoms nitrogen, oxygen or sulfur, e.g. aromatic structures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J47/00—Ion-exchange processes in general; Apparatus therefor
- B01J47/016—Modification or after-treatment of ion-exchangers
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/312—Preparation
- C01B32/342—Preparation characterised by non-gaseous activating agents
- C01B32/348—Metallic compounds
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/354—After-treatment
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/354—After-treatment
- C01B32/372—Coating; Grafting; Microencapsulation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/288—Treatment of water, waste water, or sewage by sorption using composite sorbents, e.g. coated, impregnated, multi-layered
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/50—Aspects relating to the use of sorbent or filter aid materials
- B01J2220/56—Use in the form of a bed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/50—Aspects relating to the use of sorbent or filter aid materials
- B01J2220/58—Use in a single column
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S210/00—Liquid purification or separation
- Y10S210/902—Materials removed
- Y10S210/911—Cumulative poison
- Y10S210/912—Heavy metal
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S210/00—Liquid purification or separation
- Y10S210/902—Materials removed
- Y10S210/911—Cumulative poison
- Y10S210/912—Heavy metal
- Y10S210/913—Chromium
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S423/00—Chemistry of inorganic compounds
- Y10S423/09—Reaction techniques
- Y10S423/14—Ion exchange; chelation or liquid/liquid ion extraction
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Hydrology & Water Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Treatment Of Water By Ion Exchange (AREA)
- Removal Of Specific Substances (AREA)
- Water Treatment By Sorption (AREA)
- Treatment Of Liquids With Adsorbents In General (AREA)
Description
1
Изобретение относитс к области очистки сточных вод производств цветной металлургии и химической промышленности.
Известный способ очистки сточных вод от иоцов т желых металлов заключаетс в их адсорбции на углеродсодержащих материалах , например активированном угле.
Недостатком известного способа вл етс степень очистки, остаточна концентраци т желых металлов, например ртути, составл ет 0,1-0,2 мг/л.
Предложенный способ отличаетс от известного тем, что углеродсодержащий материал предварительно пропитывают серусодержащим органическим соединением, например, меркаптанам алифатического р да с длиной цепи Ci-Cs, алкинилмеркаптаном состава Cz-€5 или моноцикличеоким меркаптаном ароматического р да, а количество серусодержащего соединени составл ет 0,5-10% от веса примен емого адсорбента.
Эти отличи позвол ют повысить степень ОЧИСТКИ: концентраци ртути составл ет 0,02 мг/л или ниже.
Пример 1. Активированный уголь прочитывают этилмеркаптаном в количестве 0,5% от веса угл и выдерживают в течение суток .
После суточной выдержки 50 кг обработанного адсорбента загружают в адсорбционную
колонку. Через колонку пропускают сточную воду, содержащую 0,1-3 мг/л ртути в количестве 300 м.
В очищенно сточной воде остаточное содержание ртути составл ет 0,015 мг/л.
Пример 2. 50 кг активированного угл пропитывают 250 г этилмеркаптана. Пропитку ведут в течение 24 час.
Пропитанный этилмеркаптаном адсорбент загружают в адсорбционную колонку и пропускают сточную воду, содержащую соединени ртути. Остаточное содержание ртути составл ет 0,005-0,02 мг/л.
Предмет изобретени
Claims (2)
1.Способ очистки водных растворов от ионов т желых металлов, на пример ртути, путем их адсорбции углеродсодержащим материалом , отличающийс тем, что, с целью повышени степени очистки, углеродсодержащий материал предварительно пропитывают серусодержащим органическим соединением, например меркацтаном алифатического р да с длиной цепи Ci-€5, алкинилмеркаптаном состава €2-СБ или моноциклическим мер:каптаном ароматического р да.
2.Способ по п. 1, отличающийс тем, что количество серусодержащего соединени составл ет 0,5-10% от веса примен емого утлеродсодержащего адсорбента.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE01586/71A SE349946B (ru) | 1971-02-09 | 1971-02-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU434644A3 true SU434644A3 (ru) | 1974-06-30 |
Family
ID=20258465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU1745739A SU434644A3 (ru) | 1971-02-09 | 1972-02-08 | Способ очистки водных растворов от ионов тяжелых металлов |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US3728257A (ru) |
| BE (1) | BE779158A (ru) |
| CA (1) | CA994482A (ru) |
| DE (1) | DE2205846A1 (ru) |
| FR (1) | FR2124577B1 (ru) |
| GB (1) | GB1366032A (ru) |
| IT (1) | IT948379B (ru) |
| NL (1) | NL7201711A (ru) |
| NO (1) | NO130393B (ru) |
| SE (1) | SE349946B (ru) |
| SU (1) | SU434644A3 (ru) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4136021A (en) * | 1974-10-07 | 1979-01-23 | Mobil Oil Corporation | Sorbent for heavy metals |
| JPS5222172A (en) * | 1975-08-12 | 1977-02-19 | Sumitomo Chem Co Ltd | Filter medium for capturing selectively metal ions |
| DE2711587C2 (de) * | 1977-03-17 | 1986-08-07 | Kernforschungsanlage Jülich GmbH, 5170 Jülich | Verwendung eines aus Huminsäuren an einem Trägermaterial bestehenden Adsorbermaterials zur Gewinnung von Schwermetallen aus Meerwasser |
| NO140408C (no) * | 1977-09-19 | 1979-08-29 | Johannes Dale | Fremgangsmaate for total eller selektiv fjerning av salter fra vandig opploesning |
| DE3042907C1 (de) * | 1980-11-14 | 1982-05-27 | Bodenseewerk Perkin-Elmer & Co GmbH, 7770 Überlingen | Verfahren und Vorrichtung zur Messung der Atomabsorption und -emission unter Erzeugung einer gasfoermigen Messprobe |
| US4740409A (en) * | 1987-03-31 | 1988-04-26 | Lefkowitz Leonard R | Nonwoven fabric and method of manufacture |
| US5637232A (en) * | 1996-03-11 | 1997-06-10 | Calgon Carbon Corporation | Process for the catalytic oxidation of ferrous iron in liquid media |
| EP1876436A1 (de) | 2006-07-07 | 2008-01-09 | Mettler-Toledo AG | Messgerät zur gravimetrischen Feuchtigkeitsbestimmung |
| GB201405888D0 (en) * | 2014-04-02 | 2014-05-14 | Johnson Matthey Plc | Mercury removal |
| CN111346592A (zh) * | 2018-12-20 | 2020-06-30 | 龚成云 | 一种含硫修复剂及其应用和制备方法 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA955035A (en) * | 1970-02-05 | 1974-09-24 | Osaka Soda Co. | Treatment process for removal of metals and treating agent therefor |
-
1971
- 1971-02-09 SE SE01586/71A patent/SE349946B/xx unknown
- 1971-02-19 US US00117097A patent/US3728257A/en not_active Expired - Lifetime
-
1972
- 1972-01-31 IT IT48050/72A patent/IT948379B/it active
- 1972-02-04 NO NO00299/72*[A patent/NO130393B/no unknown
- 1972-02-07 GB GB553772A patent/GB1366032A/en not_active Expired
- 1972-02-08 CA CA134,259A patent/CA994482A/en not_active Expired
- 1972-02-08 FR FR7204205A patent/FR2124577B1/fr not_active Expired
- 1972-02-08 DE DE19722205846 patent/DE2205846A1/de active Pending
- 1972-02-08 SU SU1745739A patent/SU434644A3/ru active
- 1972-02-09 NL NL7201711A patent/NL7201711A/xx unknown
- 1972-02-09 BE BE779158A patent/BE779158A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CA994482A (en) | 1976-08-03 |
| DE2205846A1 (de) | 1972-08-24 |
| FR2124577A1 (ru) | 1972-09-22 |
| FR2124577B1 (ru) | 1977-07-15 |
| IT948379B (it) | 1973-05-30 |
| SE349946B (ru) | 1972-10-16 |
| BE779158A (fr) | 1972-05-30 |
| NL7201711A (ru) | 1972-08-11 |
| US3728257A (en) | 1973-04-17 |
| NO130393B (ru) | 1974-08-26 |
| GB1366032A (en) | 1974-09-04 |
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