Biosorbents Used for Organic and Metallic Pollution Treatment
The organic and metallic pollution of water resources is constantly growing in the African cities. In Cote dlvoire, the industrial and human activities are essentially responsible of this phenomenon. For instance, industries such as coating, electric battery manufacturing, paint, lead smelting, internal combustion engines, generates large quantity of wastewaters containing large quantity of lead, zinc, iron, copper etc. These metals are potentially toxic as reported by many authors. So their removal from industrial wastewaters remains an important challenge for researchers. Water pollution with organic matter fermentable led to the loss of dissolved oxygen. This causes the death of aquatic life and other animals in these waters. The presence of nutrients such as phosphorus is also responsible of the eutrophication characterised by the growth of watery plants. The treatment of the wastewaters via conventional methods remains expensive for the third word country. Fortunately, alternative pathways based on the use of biomaterials available in large quantities and inexpensive, particularly biosorbents are increasingly attractive. The work presented here concerns the use of activated carbon from mesocarpe fibrous of coconut, seed hull of the palm tree, Tieghemella heckelii on the one hand and the use pterygota macrocarpa sawdust and clays on the other hand for the heavy metal and organic pollution removal from wastewaters. The influences of different parameters such as absorbent dose, pH, temperature, contact time and initial pollutant concentration are studied. Kinetic and thermodynamic aspects are also discussed. The use of mesocarpe fibrous of coconut showed a COD fall rate going from 84 to 94%. Concerning the metal ion uptake, the use of activated carbon from, seed hull of the palm tree and Tieghemella heckelii gave whatever the operating conditions, a pollutant elimination higher than 80%. Moreover, the equilibrium studies showed that the sorption processes were best fitted by the Langmuir and Freundlich models.
Wastewaters heavy metals organic pollution activated carbon clay, sawdust kinetic equilibrium study.
Benjamin YAO Kopoin ADOUBY Pierre DADLE Henry Bi BRITON Soumahoro GUEU
Industrial Process,Synthesis and environmental Laboratory,Polytechnic National Institute Houphouet-Boigny of Yamoussoukro,BP 1093 Yamoussoukro,Cote dlvoire
国际会议
2009 International Symposium on Environmental Science and Technology(2009环境科学与技术国际会议)
上海
英文
1064-1068
2009-06-02（万方平台首次上网日期，不代表论文的发表时间）