Pb and Co removal from paint industries effluent using wood ash
Journal Title: International Journal of Environmental Science and Technology - Year 2008, Vol 5, Issue 2
Abstract
The release of heavy metals into the environment is a worldwide major concern. Different studies have demonstrated that natural agents have a high removal capacity for divalent heavy metal ions. Wood ash is a natural adsorbent and, in comparison with others, has a very low price. In this study, the removal of heavy metals (Pb and Co) from Binalood paint industry (Kerman, Iran) effluent was investigated in batch condition. Pb and Co measurement in samples were done with atomic absorption equipment and test methods were adapted from standard methods for the examination of water and wastewater. The effect of pH and the amount of adsorbent was determined and different adsorption isotherms were also obtained. This study shows that the adsorption process follows the adsorption Langmuir isotherm. The amount of wood ash has a great role in the adsorption rate and adsorption rate increased as wood ash increased. In the study, the reactions reached equilibrium in 3 h contact time. The maximum Pb removal efficiency was 96.1% at pH 2 with a contact time of 3 h and 100 g/L wood ash and the maximum Co removal efficiency was 99 % at pH 2 with a contact time of 3 h and 100 g/L wood ash. According to the results, wood ash is recommended as a low cost and available adsorbent to remove Pb and Co from municipal and industrial wastewaters.
Authors and Affiliations
M. Malakootian, A . Almasi, H. Hossaini
Keywords
Related Articles
- EP ID EP128956
- DOI -
- Views 99
- Downloads 0
Sulphate reducing bacteria to precipitate mercury after electrokinetic soil remediation
Combined treatment with electroremediation and sulphate reducing bacteria (SRB) was tested in laboratory and pilot scale. The contaminated soil came from a chlor-alkali factory and contained about 100 mg/kg Hg. Iodide/io...
Assessment of the impact of industrial effluents on water quality of receiving rivers in urban areas of Malawi<br />
A study was carried out in Malawi to assess the extent of chemical pollution in a receiving river as affected by industrial effluents. Both the effluents and the water at selected points in the river were analysed for pH...
Development of a master plan for industrial solid waste management
Rapid industrial growth in the province of Khuzestan in the south west of Iran has resulted in disposal of about 1750 tons of solid waste per day. Most of these industrial solid wastes including hazardous wastes are disp...
Influence of gender and type of school on environmental attitude of teachers in Iran and India
The present study reports on secondary school teacher’s environmental attitude in India and Iran. One thousand and four teachers were selected through the stratified random sampling technique from 103 secondary schools o...
An environmental oriented model for optimum cut off grades in open pit mining projects to minimize acid mine drainage
Environmental concerns on mining activities started near the end of the 20th century and is still underway. Due to mining activities, the adverse environmental impact has been significant throughout the history of mankin...