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Register a new userStudy the Efficiency of Cu ions adsorption from Their solutions on the surface of Silicon oxide
دراسة كفاءة امتزاز شوارد النحاس من محاليلها المائية على سطح متعدد حمض السيليكون
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يهدف البحث لدراسة كفاءة امتزاز شوارد النحاس من محاليلها المائية على سطح متعدد حمض السيليكون باعتباره من أهم مكونات القشرة الأرضية و المواد الرسوبية و المواد العالقة بمياه الأنهار, لمعرفة مدى فعالية هذه الطريقة كطريقة من طرق المعالجة الطبيعية. تم دراسة امتزاز شوارد النحاس من محاليلها المائية على سطح متعدد حمض السيليكونفي عدة مجموعات , في المجموعات الثلاثة الأولى تم تثبيت كمية الجسم الماز و أضيفت تراكيز متغيرة من الشوارد الممتزة و بعد الامتزاز تم تحديد تركيز شوارد النحاس المتبقية في المحلول و بالتالي حساب كمية الشوارد الممتزة على سطح الجسم الماز.
This search aims to study the adsorption of Cu ions from their solutions on the surface of silicon oxide. These experiments were in five groups, at the first three groups the amount of the adsorbent was constant, and the concentration of the adsorbing ions was changed, after the adsorption is ended the concentration of Cu remaining ions in the solution was measured, then the quantities of the adsorbing ions on the surface of silicon oxide were determined.
References used
A. Da˛browski, Adsorption from theory to practice, Faculty of Chemistry, M.Curie-Sk łodowska Uni _ersity, 20031 Lublin, Poland.2001
(Experimentelle Untersuchungen der Adsorption van Schwermetallenan der Kieselsäure FK700 una an anionischmodifiziertenPolyamid,UniversitälEssen,Germany(1996
C. Tien, Adsorption Calculations and Modeling, Butterworth- Heinemann, Boston, 1994
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The Syrian natural zeolite from om'ozon area has been studied as adsorbent for Ni(II) ions from aqueous solution. The removal of Ni(II) ions under different conditions was studied adsorption of Ni(II) enhanced with an increase of initial concentratio
n, temperature and PH .all experiments were carried out at contact time 6h.
The amount of Ni(II) adsorption was increased from 16.36 mgNi/g for initial solution concentration of 100mg Ni/l to 71.33 mgNi/g (for C0=1000mgNi/L). The experimental data fitted well to Langmuir isotherm. The maximum capacity was qmax=142.85mgNi/g Adsorption amount at 298K varies from 16.36mgNi/g for initial solution concentration of 100mg Ni/l to 47.93mg Ni/g(for C0=400mgNi/L) and it increases at 333K to 16.65 mgNi/g and 51mgNi/g (for C0=100 and 400 mg Ni/L )respectively. The adsorption of Ni(II) ions was increased by increasing PH up to ~ 5 and then stabilized up to PH=6 and after that the precipitation process was accured.
In this search, the removal of copper and lead ions from aqeous solutions by flotation had
been studied, and the effect of various factors on the removal process.
The study showed that the removal of copper and lead ions was increased by increasing
the
value of the solution pH up to pH = 8 and the removal rate was 80%.
At pH = 10 precipitation of the ions was obtained in the form of hydroxides.
The removal ratio of both ions is increased by increasing the flow of the air within the
solution to reach 98% for copper and 97% for lead at the flow of Q = 1000 ml/min and
then the removal rate decreases to 60% with increasing airflow to Q = 1500 ml/min.
The initial concentration values affect the removal process and the increase in the removal
ratio was shown by increasing the initial concentration. The removal rate of copper ions
was 50 % at the initial concentration of C0 = 50 mg / l to 98% at C0 = 100 mg / l. While the
lead removal rate was 61 % at the initial Concentration C0 = 50 mg/l to 97% at
concentration C0 = 100 mg / l.
In this work the use of natural magnetite in coast sand of Wadi-kandil area in Syria
in removal of Methylene Blue (MB) from aqueous solution was studied.
The XRD measurements showed that the sample contents the crystalline magnetite
and another co
mpounds. The magnetite in the simple was separated using magnetic
method and the percentage of magnetite in the sample about 70 %.
After separating the magnetite was used to removal the MB from aqueous solution at
different initial concentration of MB (5 , 10 , 20 , 40 , 60 mg/l ) and using different dosage
of magnetite (0.2 , 0.5 , 1 g) at different values of pH and temperature 25° C.
The adsorption of MB increasing by increasing initial concentration of MB and decreasing
by increasing of pH value and the removal of MB was clearly increased when the dosage
of magnetite was increased , the removal values were 47.8% , 84.9% , 88.7% for magnetite
dosage (0.2 , 0.5 , 1 g) respectively at concentration 5 mg/l of MB . While the adsorbed
amount of MB per mass unit of magnetite was decreased because the adsorption sites
weren't saturated.
The Treatment of adsorption data according Lngmuere and Frenglish models showed
that the adsorption process accrued on the energetic homogeneous and heterogeneous sites.
Many chemical compounds (bases, inorganic acids, salts) have been used to find a suitable
solvent for vanadium oxide And determine optimal conditions for its Dissolution.The best
of them was sodium hydroxide at 2M concentration. The solubility was
100% at 90 °C and
the solubilitys time was 30 min. The number of motor cycles was 800 cycles / min and the
liquid / solid ratio was 200 g / L.
In addition,the best amino protonadted compounds were used to precipitate vanadates from
their solutions (monoethanolamine, diphenylamine, hydrazine, hydroxide amine
hydrochloride, urea) with several inorganic acids (HCl, H2SO4, HNO3) and 1: 1 acid/base
was monoethanolamine protonated with concentrated sulfur acid .
The possibility of using tuff and modified Jordanian naturalzeolite to remove the iron
ions, a model component of heavy metals in underground water, off aqueous solution were
studied. Bench-scale process was used to remove the iron ions off standar
d solutions and
real under ground water. Different parameters affected the ion exchange have been
investigated, such as concentration, modifier type and PH. Zeolite characterizations
weredetermined as XRD, XRF, BET, TGA, andFTIRmethods.We found that the modified
zeolite with sodium chloride had more effect than other salts and the iron ions exchange
efficiency depends on concentration.Zeolite efficiency was affected by PH value. Time of
sorption equilibrium achieved within 250 min. The results agree with Langmuir model.
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