SU551250A1 - Method for precipitating arsenic from solutions - Google Patents
Method for precipitating arsenic from solutionsInfo
- Publication number
- SU551250A1 SU551250A1 SU2030741A SU2030741A SU551250A1 SU 551250 A1 SU551250 A1 SU 551250A1 SU 2030741 A SU2030741 A SU 2030741A SU 2030741 A SU2030741 A SU 2030741A SU 551250 A1 SU551250 A1 SU 551250A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- solutions
- mouse
- precipitating
- sulfate
- solution
- Prior art date
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- Manufacture And Refinement Of Metals (AREA)
Description
(54) СПОСОБ ОСАЖДЕНИЯ МЫШЬЯКА ИЗ РАСТВОРОВ(54) METHOD FOR DEPOSITING ARYSIL FROM SOLUTIONS
1one
Изобретение относ итс к способу осаждени мышь ка из растворов и может быть использовано при очистке сточных вод.The invention relates to a method for precipitating a mouse from solutions and can be used in wastewater treatment.
Известен способ осаждени мышь ка из растаоров путем обработки их сульфатом титана в кислой среде (рН ;0,4-0,7). Степень извлечени мышь ка составл ет 97%. Недостатком этого способа вл етс низка стенень извлечени мышь ка.There is a known method for precipitating mice from solutions by treating them with titanium sulfate in an acidic medium (pH; 0.4-0.7). The recovery rate of the mouse is 97%. The disadvantage of this method is the low extraction wall of the mouse.
Известен также способ осаждени мь1шь ка из растворов, содержащих сульфид натри , в частаоста падросульфид натри , путем обрботки их сульфатами металлов (сульфатом меди) при концентрации их до 5 г/л при одновременном пропускании сероводорода, процесс ведут при температуре 25-60С и рН раствора 0,1. Недостатком этого способа вл етс его продолжительность (1-4часа), а также низка степень извлечени мышь ка из сульфиднокарбонатных (щелочных) растворов. Так, при обработке таких растворов (отношение сульфата меди к сульфиду натри равно 1,64-1,69) степень извлечени мышь ка не превышает 80% при продолжительности обработки 2 часа при температуре 35° С.There is also known a method of precipitating the mucous from solutions containing sodium sulfide, in particular sodium padrosulfide, by treating them with metal sulfates (copper sulfate) at a concentration of up to 5 g / l while simultaneously passing hydrogen sulfide, the process is carried out at a temperature of 25-60 ° C and pH 0.1. The disadvantage of this method is its duration (1-4 hours), as well as the low degree of extraction of arsenic from sulfide-carbonate (alkaline) solutions. Thus, when processing such solutions (the ratio of copper sulfate to sodium sulfide is 1.64-1.69), the degree of recovery of the mouse does not exceed 80% with a treatment time of 2 hours at 35 ° C.
С целью интенсификации процесса и псзышени степени извлечени мышь ка, предложено н качестве сульфата металла использовать сульфат железа при весовом соотношении его к сульфиду натри 1,10-1,60, предпочтительно 1,48-1,5 6, процесс вести при рН раствора 7,9-9,0 и температуре 61-100° С, предпочтительно70-90° С, ..In order to intensify the process and to extract the degree of arsenic extraction, it is proposed to use iron sulfate as a metal sulfate with a weight ratio of sodium to sodium sulfide of 1.10-1.60, preferably 1.48-1.5 6, the process should be carried out at a pH of 7 , 9-9.0 and a temperature of 61-100 ° C, preferably 70-90 ° C, ..
Предложенный способ позвол ет интенсифицировать процесс, сократить продолжительность до 5 минут и повысить степень извлечени мышь ка до 98,9-99,6%. .The proposed method allows to intensify the process, shorten the duration to 5 minutes and increase the recovery of the mouse to 98.9-99.6%. .
Н р и м е р. К сульфидно-карбонатцому раствору состава, г/л: сульфид натрт 78,0, сода 63,6 и мышь к 3,0 приливают водный раствор сульфата железа (1 часть железного купороса на 2 части воды). Содержание сульфида железа в растворе составл ет 120,1 г/л. Процесс осаждени ведут: прк 70°С, рН раствора 8,0, продолжительность 5 минут. В процессе осаждени раствор перемешивают (скорость мешалки 600-700 об/мин). После этого раствор фильтруют. Извлечение мышь ка в осадок - 99,6%. Содержание М1 1шь ка в маточном растворе 0,010 г/л.N p and meer. To a sulphide-carbonate solution of the composition, g / l: sulphide soda 78.0, soda 63.6 and mouse to 3.0, an aqueous solution of ferrous sulphate is poured (1 part of ferrous sulfate to 2 parts of water). The iron sulfide content in the solution is 120.1 g / l. The deposition process is carried out: prc 70 ° C, the pH of the solution is 8.0, the duration is 5 minutes. In the process of precipitation, the solution is stirred (stirrer speed 600-700 rpm). After that, the solution is filtered. Removing the mouse precipitate - 99.6%. The content of M1 is 1 ka in the stock solution of 0.010 g / l.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU2030741A SU551250A1 (en) | 1974-06-06 | 1974-06-06 | Method for precipitating arsenic from solutions |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU2030741A SU551250A1 (en) | 1974-06-06 | 1974-06-06 | Method for precipitating arsenic from solutions |
Publications (1)
Publication Number | Publication Date |
---|---|
SU551250A1 true SU551250A1 (en) | 1977-03-25 |
Family
ID=20586691
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU2030741A SU551250A1 (en) | 1974-06-06 | 1974-06-06 | Method for precipitating arsenic from solutions |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU551250A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5252003A (en) * | 1990-10-29 | 1993-10-12 | International Technology Corporation | Attenuation of arsenic leaching from particulate material |
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1974
- 1974-06-06 SU SU2030741A patent/SU551250A1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5252003A (en) * | 1990-10-29 | 1993-10-12 | International Technology Corporation | Attenuation of arsenic leaching from particulate material |
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