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Register a new userRemoving of Heavy Metals from Sewage Water Using Chitosan Extracted from Crustacean Waste
إزالة بعض المعادن الثقيلة من مياه الصرف الصحي باستعمال الكيتوسان المستخلَص من مخلّفات القشريّات
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المجلة السورية للبحوث الزراعية ورقة بحثية
Publication date
2018
fields
Food Sciences
and research's language is
العربية
Created by
Shamra Editor
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تمّ دراسة الدّور الحيوي لمركّب الكيتوسان، و المحضّر بالطريقة الكيميائيّة من قشور الروبيان نوع Penaeus semisulcatus و الهيكل الخارجي للسرطان البحري Portunus pelagicus في بعض التطبيقات الزراعيّة و الصناعيّة، حيث استخدم بتركيز 1% (وزن:حجم) و على أس هيدروجيني (4 و 8) لمدة 12 ساعة، في ترسيب و مسك المعادن الثقيلة (الرصاص، و الزنك، و الحديد، و النحاس و الكادميوم)، لمخلّفات مياه الصرف الصحي. تمّ تقدير تركيز المعادن بواسطة جهاز مطياف الامتصاص الذري Flame Atomic Absorption Spectrophotometer. أظهرت نتائج الدّراسة بأنّ أعلى تركيز للعناصر المعدنيّة للمياه كانت قبل المعاملة بمركّب الكيتوسان، حيث أظهرت حصول انخفاضٍ واضحٍ في تركيز المعادن كنسبة مئوية بعد معاملتها بالكيتوسان، إذ امتلك كيتوسان السرطان البحري إمكانيّة عالية في خلب العناصر المعدنيّة مقارنةً بكيتوسان قشور الروبيان، و قد بيّنت النتائج أنّ أعلى نسب مئوية لخلب العناصر المعدنية كانت عند الأس الهيدروجيني 4 مقارنةً مع 8 و قد أثبتت نتائج الدّراسة إمكانيّة الكيتوسان العالية في خلب و ترسيب الأيونات المعدنية من المياه الملوّثة.
The biological role of chitosan which was prepared by chemical method from shrimp waste Penaeus semisulcatus and the outer skeleton for marine crab Portunus pelagicus in some industrial and agricultural applications were studied. The concentration of prepared chitosan was 1% (w/v) at pH (4 and 8) for 12 hours in precipitation and chelating heavy metals (Lead, Zinc, Iron, Cupper and Cadmium) from of sewage water. Concentration of elements was measured by Flame Atomic Absorption Spectrophotometer ) FAAS). The results of the study indicated that the concentration of the water elements was high before treated with chitosan. The results showed a significant (p<0.05) decrease in element concentration percentage after treated with crab chitosan. In contrast, shrimp chitosan displayed a minimum effect on decreasing the amount of heavy metals. Moreover, the results showed that the higher percentage for mineral adsorption was at pH (4 as compared with 8). The results confirmed the possibility of using chitosan in chelate and precipitate the mineral ions from polluted water.
Artificial intelligence review:
Research summary
تتناول هذه الدراسة استخدام الكيتوسان المستخلص من مخلّفات القشريات، مثل قشور الروبيان والهيكل الخارجي للسرطان البحري، في إزالة المعادن الثقيلة من مياه الصرف الصحي. تم تحضير الكيتوسان بتركيز 1% واستخدامه عند قيمتي أس هيدروجيني 4 و8 لمدة 12 ساعة. أظهرت النتائج أن الكيتوسان المستخلص من السرطان البحري كان أكثر فعالية في خلب وترسيب المعادن الثقيلة مقارنة بالكيتوسان المستخلص من الروبيان. كما بيّنت الدراسة أن أعلى نسبة مئوية لخلب العناصر المعدنية كانت عند الأس الهيدروجيني 4. تم تقدير تركيز المعادن باستخدام جهاز مطياف الامتصاص الذري، وأظهرت النتائج انخفاضًا واضحًا في تركيز المعادن بعد المعالجة بالكيتوسان، مما يؤكد فعالية الكيتوسان في إزالة الأيونات المعدنية من المياه الملوثة.
Critical review
دراسة نقدية: تعتبر هذه الدراسة خطوة مهمة نحو استخدام مواد طبيعية ومستدامة في معالجة المياه الملوثة، ولكن يمكن تحسينها من خلال توسيع نطاق البحث ليشمل أنواعًا أخرى من الملوثات والمزيد من الظروف التشغيلية المختلفة. كما يمكن تحسين الدراسة بإجراء تجارب ميدانية لتأكيد النتائج المخبرية. بالإضافة إلى ذلك، يمكن دراسة تأثير الكيتوسان على المكونات البيولوجية الأخرى في المياه الملوثة، مثل البكتيريا والفيروسات، لتقديم صورة شاملة عن فعاليته.
Questions related to the research
-
ما هي المعادن الثقيلة التي تم دراستها في هذه الورقة؟
تم دراسة الرصاص، الزنك، الحديد، النحاس، والكادميوم كمعادن ثقيلة في هذه الورقة.
-
ما هو الأس الهيدروجيني الذي أظهر أعلى فعالية في خلب المعادن الثقيلة؟
أظهر الأس الهيدروجيني 4 أعلى فعالية في خلب المعادن الثقيلة.
-
أي نوع من الكيتوسان كان أكثر فعالية في إزالة المعادن الثقيلة؟
كان الكيتوسان المستخلص من الهيكل الخارجي للسرطان البحري أكثر فعالية في إزالة المعادن الثقيلة مقارنة بالكيتوسان المستخلص من قشور الروبيان.
-
ما هي الطريقة المستخدمة لتقدير تركيز المعادن في المياه؟
تم استخدام جهاز مطياف الامتصاص الذري لتقدير تركيز المعادن في المياه.
References used
Abatneh, Y.; and O. Sahu (2014). Removal of chromium by biosorption method (Chitosan). International Letters of Natural Sciences. 8:44 – 55
Ahmed, R.A. and A.M Fekry (2013). Preparation and characterization of a nanoparticles modified chitosan sensor and its application for the determination of heavy metals from different aqueous media. Int. J. Electrochem. Sci., 8 (1) : 6692 – 6708
Bamgbose, J.T.; S. Adewuyi; O. Bamgbose; and A.A. Adetoye (2010). Adsorption kinetics of cadmium and lead by chitosan. African Journal of Biotechnology. 9 (17): 2560 – 2565
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