Transcript Document

New Challenges in the European Area:
Young Scientist’s 1st International Baku Forum
SORPTION OF URANYL-IONS FROM WATER SOLUTIONS
BY PHOSPHORYLATED WOOD SAWDUST
Jalal Naghiyev, Adil Garibov
Institute of Radiation Problems of ANAS, Radiochemistry Laboratory
B. Vahabzada, str. 9, Phone: (+994 12) 539 33 89,
E-mail: [email protected]
BAKU
MAY 20 – 25, 2013
Ministry of Youth and
Sports of Azerbaijan Republic
Relevance of research
• Like other oil-producing territory of the Republic of
Apsheron oil-producing contaminated natural radionuclides
(uranium, thorium, radium, etc.) that are in formation water
coming to the surface with oil.
• Produced water is pumped together with oil and is
separated from it flows through channels in the artificial
lake.
• As a result of deposition and accumulation of isotopes 235U,
238U, 226Ra, 228Ra и 224Ra and 224Ra and their degradation
products are detected in large quantities in water, sediment
and soil in oil production.
Institute of Radiation Problems of ANAS, Radiochemistry Laboratory
Relevance of research
Institute of Radiation Problems of ANAS, Radiochemistry Laboratory
Relevance of research
• This leads to increased levels of gamma radiation in the areas
of accumulation, so cleaning the contaminated areas of the
radioactive isotope is an urgent task.
• Analysis of the formation water and sediment showed that the
bulk of them from the radionuclides uranium and radium.
• In nature, in contrast to the compounds of thorium, radium and
uranium compounds are much more soluble in water.
• Particularly dangerous water soluble uranium, mainly because
of its chemical toxicity and less radiotoxicity
• Therefore, the study of clean water basins soils from uranium
and fission products of great interest.
Institute of Radiation Problems of ANAS, Radiochemistry Laboratory
Have been identified the activity of natural radioactive
isotopes in layer waters the real environmental situation
U-235
0.1
U-238
2.17
Ra-226
10.5
Bq/l
CU~μq/l
238U, 235U, 234U, 40K
226Ra, 228Ra
və 224Ra
kimi radioaktiv
elementlər
1000000
100000
10000
Bq/l
CRa~pq/l
1000000
100000
10000
1000
Activity found
in groundwater
100
1000
100
10
10
1
Ra-228
12.5
0
1
1
0
0.1
0.1
0.01
0.01
1
Synthesis of Sorbent
Fig. Modification of cellulose medium CCl4, with PCl3 and molecular
oxygen. - With features. gr. ~ [PO(OH)2]
Synthesis of Sorbent
+CHCl3
Fig. Modification of cellulose medium CCl4, with PCl3 and molecular
oxygen. - With features. gr. ~ [PO(OH)OR2]
IR spectrum of Sorbent
1
2
1 - IR spectrum of cellulose
2 - IR modified sorbent
HPGe Gamma-spectrometer Canberra, US
(HPGe- High Purity Germanium Detector)
Alpha Spectrometr, CANBERRA
HP Ge Spectrometer, CANBERRA
HP Ge Spectrometer, CANBERRA
Institute of Radiation Problems of ANAS, Radiochemistry Laboratory
Determining uranium in the solution by
spectrometric methods
1. Tədqiqat işində 226Ra izotopunun həcmi aktivliyi
HPGe Detektorlu Qamma Spektrometrində
(Canberra),
2. Uran izotoplarının (234U, 235U və 238U) aktivliyi
“Alpha Analyst” markalı Alfa Spektrometrində
(Canberra),
3. Uran və radium izotoplarının birgə sorbsiyası
zamanı məhlulda izotopların aktivlikləri isə
TriCarb 3100 TR markalı Maye Sintilyasiya
Sayğacında (Perkin Elmer) təyin edilmişdir.
Alpha Analyst” markalı Alfa Spektrometrində
Nümunə
HPGe Detector
Determination of uranyl ion concentration in solution
according to activities of U 235 and Pa 234m radionuclides
AU 235 
AU235  U235  NU235
S186 kev
APa234
186 186
ln 2
mU235
 U235  N A 
T1
MU235
2
U 238
m
m
U 235
A

U 238
AU238  U238  NU238
M
U 238
M
U 235
U 238
 T1
2
A
U 235
U 235
 T1
S1001keV

 1001   1001  
ln 2
mU238
 U238  N A 
T1
MU238
2
Dependence sorption uranyl ions from solution pH
Sorbsiya dərəcəsi, R %
Optimal pH
100.0
80.0
60.0
40.0
20.0
0.0
0
1
2
3
4
5
6
7
8
9
10
11
12
13
pH
90.0
R%
70.0
50.0
30.0
10.0
-10.0 0
1
2
3
4
5
6
7
pH
8
9
10
11
12
13
14
14
pH 7
pH 5
I- (UO2)2(OH)22+
II- (UO2)3(OH)5+
Sorption of uranyl ion UO22+
Sorption
Сорбции
of uranyl
Уранила
ion UO22+
The dependence of the static adsorption having a functional group
~[PO(OH)2] from the initial and equilibrium concentration of the ion uranyl
Absorption capacity of sorbent, mg/g
с функц. гр. ~[PO(OH)2]
400
300
200
100
Cequ
Co- Initial concentration of a uranyl-ion
0
0
250
500
750
1000
1250
1500
Concentration of uranyl-ion , mg/L
The sorption capacity of 350 mg / g
1750
2000
2250
Langmuir isotherm
Ce
1
a

 L Ce
qe K L K L
с функц. гр. ~[PO(OH)2]
5.0
Ce/qe
4.0
3.0
y = 0.0027x + 0.1374
R2 = 0.9985
2.0
1.0
0.0
0
200
400
600
800
1000
1200
1400
Ce
Се: концентрация урана оставшегося в растворе после сорбции мг/л
qe: количество урана сорбируемого сорбентом с единой массой мг/г
КL: постоянная сорбции сорбента (л/g)
аL: постоянная связанная с энергией сорбции (л/мг)
Sorption Properties
Постоянные
изотермы
Фрейндлиха
Название
сорбента
Постоянные изотермы
Ленгмюра
KL
aL
l/q
l/mq
Qmax
n
KF
R2
Модификат целлюлозы с
функциональной
группой ~[PO(OH)2]
3.54
60.7
0.993
7.3 0.01965
0.0458
350
Модификат целлюлозы с
функциональной
группой~[PO(OH)OR2]
1.55
17.4
0.995
6.0 0.00539
0.0669
960
RL
1/n : гетерогенный фактор сорбента
qe: количество урана сорбируемого сорбентом с единой массой мг/г
КL: постоянная сорбции сорбента (л/g)
аL: постоянная связанная с энергией сорбции (л/мг)
Qmax: максимальная сорбционная емкость сорбента, мг/г
mq/q
Xlorfosforlaşdırılmış sellüloza uranın
desorbsiyasının tədqiqi
Desorbsiya dərəcəsi, %
100
75
HCl
HNO3
50
25
0
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
2.2
Turşunun qatılığı, M
Uranil saxlayan klinoptilolitindən uranın HCl və HNO3 turşusu ilə desorbsiya qrafiki
Habelə, uranın “sorbsiya↔desorbsiya” tsikllərinin sayı da tədqiq edilmişdir.
Recommendations for the
practical application
Актуальность
Исследования
• Separation and cleaning uranium from ground
water
• Other sources of uranium
• Uranium-rich rocks
• Uranium-rich ground water
Institute of Radiation Problems of ANAS, Radiochemistry Laboratory
Separation and cleaning uranium from
Uranium-rich rocks
Süxur
Süxur
Na2CO3 məhlulu
H2SO4 məhlulu
[(UO2)2SO4 ]-2 məhlulu
Desorbsiya
Sorbent
[(UO2)2CO3 ]-2 məhlulu
[UO2]+2 məhlulu
UO3
U3O8
UO2
AZƏRBAYCAN RESPUBLİKASININ PREZİDENTİ
YANINDA
ELMİN İNKİŞAFI FONDU
• Layihənin adı:
№04/019
Təbii radioaktiv radium izotoplarını ayırmaq
üçün yeni effektiv sorbentlərin alınması və onların
sorbsiya qanunauyğunluqlarının tədqiqi
Separation and cleaning uranium from ground water
3
7
7
4
10
2
6
1
9
5
1- İlkin lay suyu
2- Mexaniki filtr
3- Neft faza
4- Neft tələsi
5- Nasos
6- Sorbsiya kalonu (Kationit)
8
8
7- Sorbentin əlavə olunan kran
8- İşlənmiş Sorbentin çıxarıldığı kran
9- Sorbsiya kalonu (Anionit)
10- Təmizlənmiş lay suyu
Thank you for Attention !