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Article
Photocatlytic oxidation of congo red dye by using Co2O3–Cr2O3 as a Photocatalyst

Author: Alaa R. Amrin
Journal: Mesopotamia Environmental Journal بيئة وادي الرافدين ISSN: 24102598 Year: 2016 Volume: 2 Issue: 2 Pages: 66-74
Publisher: Babylon University جامعة بابل

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Abstract

Homogeneous crystalline chromium and cobalt oxides (Cr2O3- Co2O3) was prepared by co-precipitation method by mixing metals nitrate in the basic medium and the precipitate was calcinated at 700 C for 6 hrs. The crystalline structure of the synthesized products were analyzed by X-ray diffraction (XRD). The obtained XRD patterns of specimens revealed formation of a well-crystallized structure of double oxides after calcination at 700 C. The photocatalytic activity of double prepared oxides was investigated via following removal of congo red dye from the aqueous solution upon irradiation of reaction suspension under irradiation with UV light.


Article
Enhensment adsorption capacity of Phragmites australis powder for Congo red and methylene blue dyes removal

Author: Alaa R. Amrin
Journal: Mesopotamia Environmental Journal بيئة وادي الرافدين ISSN: 24102598 Year: 2017 Issue: Special Issue C Pages: 135-141
Publisher: Babylon University جامعة بابل

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Abstract

The influence of the activation methods acidic or (wet method) and thermal (or dry method) on removal efficiency of textile dyes (Congo red and methylene blue) comparing with the sample non activation adsorbents. The results showed increasing in the removal percentage of two dyes, for both used activation methods (acidic and thermal) comparing with the sample non activation adsorbents with progress contact time. At the same time the dry activation was mor active then the wet activation for both dyes, as show in the results the removal Congo red dye efficiency was 81.3% for non-actiation, 87.7% for acidic activation, 96% for thermal activation. the removal methylene blue dye efficiency was 72% for non- actiation, 90.9% for acidic activation, 96.6% for thermal activation.


Article
Aquatic Crustean shells as adsorbents for paraquate pesticide removal from its aqueous solution by thermal activation

Authors: Jasim M. Salman --- Alaa R. Amrin --- Sarab A. Jouda
Journal: Mesopotamia Environmental Journal بيئة وادي الرافدين ISSN: 24102598 Year: 2015 Volume: 1 Issue: 4 Pages: 75-83
Publisher: Babylon University جامعة بابل

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Abstract

The present work aims to investigate the removal of Paraquat dichloride Pesticide from aqueous solutions by low cost ,neutral adsorbents, eco-friendly, highly efficient such as aquatic crustean shells under various activation experimental conditions, as an ideal alternative to the current expensive methods of removing pesticide from waste water. Preliminary studies showed that paraquate attained equilibrium at 2 hours in barnacle shell powder indicating to the relative adsorption increased with increasing solution concentration. The results were showed the removal percentage increase with increasing of heat treatment of the adsorbent media (barnacle shell powder).


Article
Removal of congo red dye from aqueous solution by using natural materials

Authors: Jasim M. Salman --- Alaa R. Amrin --- Falah M. Hassan --- Sarab A. Jouda
Journal: Mesopotamia Environmental Journal بيئة وادي الرافدين ISSN: 24102598 Year: 2015 Volume: 1 Issue: 3 Pages: 82-89
Publisher: Babylon University جامعة بابل

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Abstract

The present work aims to investigate the removal of dye and Congo red dye from aqueous solutions by low cost neutral adsorbents, eco-friendly, highly efficient such as barnacle shells under various experimental conditions, as an ideal alternative to the current expensive methods of removing dyes from waste water The operating variables such as The effect of dye concentrations, contact time, pH of solution and adsorbent dose on the removal of dyes were optimized.

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