Do you want to publish a course? Click here

Removal of Zn+2 ions from aqueous solutions Using natural Syrian zeolite

إزالة أيونات الزنك من المحاليل المائية باستخدام الزيوليت الطبيعي السوري

1924   0   70   0 ( 0 )
 Publication date 2016
and research's language is العربية
 Created by Shamra Editor




Ask ChatGPT about the research

In this work the process of removal of zinc ions from aqueous solutions was studied using natural Syrian zeolite. Two samples were used: natural zeolite Z and modified zeolite with NaCl solution Z-Na. The removal percentage of zinc ions vs. time was determined using differential initial concentrations of Zn+2: 50,100,200,300,400 mg/L. The contact time was determined and it was 360 min. The removal of Zn+2 ions as a function of temperature and pH have been studied. It was found the increasing of removal percentage by increasing temperature and increasing when pH increasing up to ~7,then the precipitation of zinc hydroxide accurse. The Langmuire adsorption isotherm equation used to calculate the maximum sorption capacity and it was 21.7 and 28.5 mg/g for Z and Z-Na respectively. Results indicate a significant potential for the natural and modified zeolite as an adsorbent/ion-exchange materials for heavy metal removal.


Artificial intelligence review:
Research summary
تناول البحث دراسة إمكانية استخدام الزيوليت الطبيعي السوري في إزالة أيونات الزنك من المحاليل المائية. استخدمت عينتان من الزيوليت: زيوليت خام طبيعي (Z) وزيوليت معدل بكلوريد الصوديوم (Z-Na). تم تحديد نسبة إزالة أيونات الزنك بتابعية الزمن عند تراكيز ابتدائية مختلفة لأيونات الزنك في المحلول المائي (50, 100, 200, 300, 400 mg/L)، وبلغ زمن التوازن حوالي 360 دقيقة. كما تم دراسة تأثير درجة الحرارة ودرجة الحموضة (pH) على عملية الإزالة، حيث تبين أن العملية ماصة للحرارة وتزداد نسبة الإزالة بزيادة درجة الحرارة ودرجة الحموضة حتى قيمة pH = 7، ثم تزداد بشكل حاد نتيجة ترسب هيدروكسيد الزنك. تم استخدام علاقة لانغموير لتحليل البيانات التجريبية، وتبين أن السعة التبادلية العظمى للعينة Z بلغت 21.7 mg/g، بينما بلغت للعينة Z-Na 28.5 mg/g. أظهرت النتائج أن الزيوليت المعدل Z-Na يمتلك كفاءة عالية في إزالة أيونات الزنك من المحاليل المائية، مما يشير إلى إمكانية استخدامه في عمليات التبادل الأيوني لهذه الأيونات ولأيونات العناصر الثقيلة الأخرى.
Critical review
دراسة نقدية: يعتبر البحث قيمة علمية كبيرة في مجال معالجة المياه وإزالة الملوثات، حيث يقدم حلاً فعالاً ومنخفض التكلفة باستخدام مواد طبيعية متوفرة محلياً. ومع ذلك، يمكن تحسين البحث من خلال توسيع نطاق الدراسة لتشمل أنواع أخرى من الملوثات والعناصر الثقيلة، وكذلك دراسة تأثير العوامل البيئية المختلفة على كفاءة الزيوليت في عمليات الإزالة. كما يمكن تعزيز البحث بإجراء تجارب ميدانية لتقييم فعالية الزيوليت في ظروف بيئية حقيقية. بالإضافة إلى ذلك، يمكن النظر في تحليل التكلفة والفائدة الاقتصادية لاستخدام الزيوليت المعدل مقارنة بطرق المعالجة الأخرى.
Questions related to the research
  1. ما هي العينات المستخدمة في البحث لإزالة أيونات الزنك؟

    استخدمت عينتان: زيوليت خام طبيعي (Z) وزيوليت معدل بكلوريد الصوديوم (Z-Na).

  2. ما هو زمن التوازن الذي تم تحديده لإزالة أيونات الزنك؟

    بلغ زمن التوازن حوالي 360 دقيقة.

  3. كيف تؤثر درجة الحرارة على عملية إزالة أيونات الزنك؟

    تزداد نسبة الإزالة بزيادة درجة الحرارة، مما يشير إلى أن العملية ماصة للحرارة.

  4. ما هي السعة التبادلية العظمى للعينة Z-Na وفقاً لعلاقة لانغموير؟

    بلغت السعة التبادلية العظمى للعينة Z-Na حوالي 28.5 mg/g.


References used
MINCEVA.M; MARKOVSKA.L and MESHKO.V. Removal of Zn+2,Cd+2and pb+2from binary aqueous solution by natural zeolite and granulated activated carbon. J.Chem.Energ. 2007,26,125-134
SEN.TK; SARZALI.MV. Removal of cadmium metal ion from its aqueous solution by aluminum oxide:a kinetic and equilibrium study. J.Chem. Eng. 2008,142, 256-262
TRGO.M; PERIC.J; VUKOJEVIC MEDVIDOVIC.N. Investigation of different kinetic models for zinc ions uptake by a natural zeolite tuff. J.of Inviron. Manag. 2006,79,298-304
rate research

Read More

Syrian natural zeolit was used to study the adsorption of phenol from aqueous solutions. Batch method was used to study the adsorption process. The results showed that the adsorption process accurs rabidly at the first time and the equilibrium ach ieved after 120min . The adsorption process performed in the rang of PH (3-10). The adsorption of phenol increased by increasing of PH value up to(6-7) and then decreased. The temperature affect the adsorption process and the results showed that the increasing of the temperature leads to decreasing of the adsorption of phenol.The maximum adsorption amount of phenol was 8 mg/g at 25C0 when the initial concentration of phenol was 60mg/l. Adsorption amount of phenol increased when the adsorbent dosage increased up to 0.3g of zeolite. The resulted data of the adsorption isotherm were fitted with Langmuire model and the monomolecular layer adsorption formed on the surdace of the adsorbent.
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.
studied the elimination of lead using natural zeolite by studding the the best conditions to removal lead in a system with two phase: liquid (contaminated water with lead)-solid (natural zeolite), correlation of the following factors: time of mixin g phase, granular size of solid phase, change of pH values, concentration of the calcium element as a competitor element for the available sites for occupation on the solid phase, the ratio V/m represents the size of the aqueous phase to the mass of the solid phase and concentration of lead element. On the other hand, the possibility of using natural zeolite as a template for storaging dangerous materials such as lead, has been studied by changing water quality, pH and temperature. The results of this research show that and under the following experimental conditions: time of mixing=4hour, mix of granular size of solid phase, pH< 8, concentration of calcium = 20 ppm,V/m=100 and concentration of lead = 1000 ppm , the rate of lead removal range from 60% to 99%. On the other hand, the results of this research show that changing water quality has no impact on the ability of natural zeolite for storaging lead as a hazardous waste, while pH changes have minor effects on this ability of retention and an effect for the high temperatures on the template was also observed.
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.
comments
Fetching comments Fetching comments
Sign in to be able to follow your search criteria
mircosoft-partner

هل ترغب بارسال اشعارات عن اخر التحديثات في شمرا-اكاديميا