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Authors: Hatem Asal Gza --- Noor Qassim Sabri
Journal: Al-Qadisiyah Journal for Engineering Sciences مجلة القادسية للعلوم الهندسية ISSN: 19984456 Year: 2018 Issue: 2 Pages: 229-245
Publisher: Al-Qadisiyah University جامعة القادسية

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Abstract

Natural materials that are readily available in large amounts in nature and easily accessible may be used as low cost additives. The aim of this study is to measure the susceptibility of these locally available materials, conocarpus plant, to improve the quality of wastewater discharged from textile industry.In addition to conocarpus- without chemically treated, conocarpus- chemically treated, carbonized conocarpus and activated carbon were used as adsorbents in order to make a comparison, and to test which one of the four types give the best efficiency for removing dye. The ability of adsorbents to adsorb dye was studied using continuous system; studied parameters were effect of flow rate, bed depth, and initial concentration. The experimental results showed that maximum removal efficiency of conocarpus - without chemically treated was found to be 90% after 75 min at flow rate 20 l/h, pH value 3 , bed depth 5cm and initial concentration 40 mg/l. The maximum removal efficiency for conocarpus- chemically treated was up to 83.75% after 15 min at flow rate 10 l/h, pH value 3, bed depth 10 cm and initial dye concentration 40 mg/l. The maximum removal efficiency for carbonized conocarpus was up to 99.67% after 15 min at flow rate 10 l/h, pH value 3, bed depth 10 cm and initial dye concentration 40 mg/l. For activated carbon the maximum removal efficiency was found to be 99.75% after 15 min at flow rate 10 l/h, pH value 3, bed depth 10cm and initial dye concentration 40 mg/l.


Article
REMOVAL OF TERASIL BLUE DYE FROM SYNTHETIC WASTEWATER USING LOW COST AGRO-BASED ADSORBENTS

Authors: Hatem Asal Gzar --- Noor Qassim Sabri
Journal: Al-Qadisiyah Journal for Engineering Sciences مجلة القادسية للعلوم الهندسية ISSN: 19984456 Year: 2018 Volume: 11 Issue: 2 Pages: 246-255
Publisher: Al-Qadisiyah University جامعة القادسية

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Abstract

Natural materials that are readily available in large amounts in nature and easily accessible may be used as low cost additives. The aim of this study is to measure the susceptibility of these locally available materials, conocarpus plant, to improve the quality of wastewater discharged from textile industry. In addition to conocarpus plant, carbonized conocarpus and activated carbon were used as adsorbents in order to make a comparison, and to test which one of the three types give the best efficiency for removing dye. The ability of adsorbents to adsorb dye was studied using batch system; studied parameters were effect of pH, dose of adsorbents, time, and agitation speed. The experimental results showed that the maximum removal efficiency of conocarpus was found to be 87.5% at 50 rpm mixing speed, pH value 3 , mixing time 120 min and the dose of adsorbent was 0.25 g. The maximum removal efficiency for carbonized conocarpus was up to 98.7% at 150 rpm mixing speed, pH value 3 , mixing time was equal to 7 hours and the dose of sorbent was 1.25 g. For activated carbon the maximum removal efficiency was found to be 99% at mixing speed of 200 rpm, pH value 3 or 11, mixing time was equal to 7 hours and the dose of the sorbent was 1.25 g. The above removal efficiencies were obtained at temperature 20 °C.

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