Adsorbent Capacity of Local Volcanic Ash (Scoria) and  Activated Carbon Composite for The Removal of Chromium (Vi)  From Waste Water

Belete, Kefyalew

dc.contributor.author	Belete, Kefyalew
dc.date.accessioned	2024-12-17T06:18:46Z
dc.date.available	2024-12-17T06:18:46Z
dc.date.issued	2024-12
dc.identifier.uri	http://ir.bdu.edu.et/handle/123456789/16392
dc.description.abstract	Chromium (VI) emissions from industry have the potential to contaminate the environment and accumulate in particular parts of the human body, posing a danger to life. In this study volcanic ash (VA) and activated carbon (AC) composite were to use it as an adsorbent for the removal of Cr (VI) from Tannery waste water. The performance of volcanic ash and activated carbon composite was characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), UV− Visible spectroscopy and point of zero charge. In order to remove Cr (VI), batch adsorption studies were carried out at room temperature with variable pH 2– 10, dosage 0.1–0.9 mg/50ml, initial concentration 50–110 ppm, and contact time 30-120 min. At pH 2, dosage = 0.1 g, concentration = 50 ppm, and contact duration = 60 min, the optimum values for Cr (VI) adsorption were achieved. The maximum adsorption capacity of Cr (VI) at the optimal pH was found to be 24.34 mg/g. Because of the anionic species of Cr (VI), electrostatic interaction played a significant role in these adsorptions. Adsorption kinetics and adsorption isotherm studies also showed that the data suited the Langmuir isotherm for Cr (VI) and had a good correlation with the pseudo second order. The finding indicates that VA & AC composite can be considered as a good adsorbent for mitigation of Cr (VI) from tannery industries effluent.	en_US
dc.language.iso	en_US	en_US
dc.subject	Chemistry	en_US
dc.title	Adsorbent Capacity of Local Volcanic Ash (Scoria) and Activated Carbon Composite for The Removal of Chromium (Vi) From Waste Water	en_US
dc.type	Thesis	en_US