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Article
Purification of aqueous solutions malachite green by using cardamom seeds shells

Author: Ali K. Al-Muttarri
Journal: Mesopotamia Environmental Journal بيئة وادي الرافدين ISSN: 24102598 Year: 2017 Volume: 3 Issue: 4 Pages: 1-5
Publisher: Babylon University جامعة بابل

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Abstract

This study was conducted to find a new and cheap method to remove the malachite green dye from the aqueous solutions, the effects of four main factors on the adsorption process was studied, results show that the best contact time for adsorbing the malachite green dye was 150 min. which give removal efficiency more than R% = 76, we found that the increase in the initial dye concentration lead to the increase in R%, the highest R% reached was 79.8 at initial dye concentration 100 mg/L, the results also show that the R% was increased with the increase in the Adsorbent weight , the highest R% recorded was 82.7 when adding 2 gm of cardamom seed shells, the final factor studied was pH value the R% was increased with the increase of pH value from acidity to alkali media , the highest R% was 84.35 at pH=7.


Article
Efficacy of Some Aromatic Plant Extracts on Treating the Eggs of the Common Carp (Cyprinus carpio L.) Against Fungal Infection in Comparison with Traditional Fungicide Malachite Green

Authors: Ahmed M. S. Al-Janae'e --- Atheer H. Ali --- Taha Y. Al-Edany
Journal: Basrah Journal of Agricultural Sciences مجلة البصرة للعلوم الزراعية ISSN: 18175868 Year: 2017 Volume: 30 Issue: 2 Pages: 59-71
Publisher: Basrah University جامعة البصرة

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Abstract

The current study was carried out in Basrah Prawn Hatchery during the period from 23 March 2016 till 15 April 2016. Water extracts of four species of aromatic plants: garlic Allium sativum L., eucalyptus Eucalyptus camaldulensis Deh., mint Mentha spicata L. and ginger Zingiber officinale Roscoe were used as alternative materials instead of malachite green to control the pathogenic fungus Saprolegnia parasitica on eggs of the common carp Cyprinus carpio. The reason of using these substituted materials used here is to avoid the carcinogenic effect of malachite green for producers, consumers and abnormalities malformations of fish fries, contamination of the aquatic environment and economic losses resulted from malformation of fish larvae. The results showed significant differences in the sterilization ratio with the studied plants according to species and concentration of the extract in comparison with that of malachite green. The results showed that with application of 100% of the stock solution (full strength of garlic extract), the activity of treatment reached 96%, while lowest activity of sterilization reached 90% with using 100% ginger extract as compared to malachite green (99%). The number of alive fish larvae differs according to the species of the plant; the highest number of alive fish larvae (18694 larvae) was achieved with ginger, while the lower number (12320) was with eucalyptus in comparison with malachite green (13878). No such malformation in the larvae was occurred when treated with garlic, ginger and mint, while just 1% (non-significant) of malformation occurred with eucalyptus in comparison with malachite green (7%).


Article
Photocatalytic Degradation of Malachite Green Dye Over Naked Niobium Oxide as a Photocatalyst

Authors: Alaa Salman Hussein --- Nada Yehya Fairooz
Journal: Journal of University of Babylon مجلة جامعة بابل ISSN: 19920652 23128135 Year: 2016 Volume: 24 Issue: 9 Pages: 2510-2518
Publisher: Babylon University جامعة بابل

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Abstract

This study is one application of Advanced Oxidation Process (AOPs) that is using Naked Niobium Oxide (Nb2O5) as a photocatalyst to degrade the industrial Malachite Green dye. Malachite Green is used in many industries such as leather, silk, paper, plastic and others. This research involved Study different factors of photodegradation [weight of catalyst (0.03 – 0.3) g, initial concentration of dye (5 – 15) ppm, temperature (5 – 25) ℃, light intensity (2.3 – 3.5) mW / cm2, pH (2 – 8), adding of hydrogen peroxide (0.5 – 2) mL and type of gas (air, N2)].

تعتبر هذه الدراسة أحد تطبيقات عمليات الأكسدة المتقدمة (AOPs) باستخدام العامل المساعد المجرد أوكسيد النيوبيوم (Nb2O5) كعامل مساعد ضوئي لتكسير صبغة المالاخايت الأخضر.تستخدم صبغة المالاخايت الأخضر في عدة صناعات منها صناعة الجلود، الحرير، الورق، البلاستيك بالإضافة الى صناعات أخرى. تضمن البحث دراسة تأثير الظروف المختلفة على عملية التكسير الضوئي [تأثير وزن العامل الساعد (0.03 – 0.3) غم، التركيز الابتدائي للصبغة (5 – 15) جزء بالمليون، درجة الحرارة (5 – 25) درجة سيليزية، شدة الضوء المستخدم (2.3 – 3.5) ملي واط/سم2، الدالة الحامضية (2–8)، إضافة بيروكسيد الهيدروجين (0.5 – 2.0) مليلتر ونوع الغاز المستخدم (هواء، غاز النتروجين)].

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