Removal of Some Selected Heavy Metal Using Modified Bagasse and Eucalyptus Bark from Gold Mining Waste Water: Case Study of Ezana (Meli) Gold Mining Development Plc Industries
| dc.contributor.advisor | Abubeker, Yimam (PhD) | |
| dc.contributor.author | Mebrahtom, Hagos | |
| dc.date.accessioned | 2019-01-16T10:04:17Z | |
| dc.date.accessioned | 2023-11-10T15:01:19Z | |
| dc.date.available | 2019-01-16T10:04:17Z | |
| dc.date.available | 2023-11-10T15:01:19Z | |
| dc.date.issued | 2018-06 | |
| dc.description.abstract | This study investigated the potential use of modified bagasse (MSB) and eucalyptus Bark (EB) treated from sample wastewater in batch mode experiments. The discharge of untreated gold mining wastewater contaminates with heavy metals such as Cu (II) and Pb (II), which is threatening ecosystems, carcinogenic to the human & hinder development of plants. Since the removal by adsorption is cost effective, not time consuming and environmentally friendly, it has been widely studied by many scholars for remediation of heavy metals. Characterization of bagasse and eucalyptus bark were analyzed using proximate analysis like MC (%), Ash value (%), ƍ b (g/cm 3 ), VM (%), fixed carbon (%) and % (C, N 2 ). FTIR analysis revealed the presence of multiple functional groups in the adsorbent, some of which were involved in the sorption process and x-ray diffraction (XRD) used to measure the crystalline content of adsorbent materials. The result indicated that the effluents discharged from Ezana Gold extraction were mainly contains the following: TSS (ppm), turbidity (NTU), EC (µs/cm), TDS (ppm), COD (ppm), temperature(°C), pH, cyanide WAD with <11°C (ppm) and heavy metals such as Fe > Cu >Pb >Mn > Cr (VI) >Zn > Co > Ni > Cd (ppm). They were determined by atomic absorption spectroscopy. The major pollutants selected from the process effluent were Cu 2+ and Pb 2+ due to exceeded standard discharge limits. The objective of the study was removal of Cu 2+ and Pb 2+ from rich Ezana wastewater using modified sugarcane bagasse and eucalyptus bark powder as an adsorbent. The selected parameters were pH, adsorbent dose and time. A maximum removal of (Cu 2+ , Pb 2+ ) by modified bagasse (88.45%, 94%) and eucalyptus bark (92%, 99%) respectively was achieved. The adsorption data were well fitted to the Langmuir isotherm model and pseudo-second order kinetic model for both modified bagasse (Cu, Pb) and eucalyptus bark (Cu, Pb). This indicated that Eucalyptus bark powder was more effective than modified bagasse (MSB) and it can be used as an alternative low cost adsorbent for the removal of copper and lead from Ezana mining wastewater. | en_US |
| dc.identifier.uri | http://etd.aau.edu.et/handle/12345678/15759 | |
| dc.language.iso | en_US | en_US |
| dc.publisher | Addis Ababa University | en_US |
| dc.subject | Adsorption | en_US |
| dc.subject | Cu 2+ and Pb 2+ | en_US |
| dc.subject | eucalyptus bark | en_US |
| dc.subject | Isotherm | en_US |
| dc.subject | kinetics | en_US |
| dc.subject | Modified bagasse and eucalyptus bark | en_US |
| dc.title | Removal of Some Selected Heavy Metal Using Modified Bagasse and Eucalyptus Bark from Gold Mining Waste Water: Case Study of Ezana (Meli) Gold Mining Development Plc Industries | en_US |
| dc.type | Thesis | en_US |