Irrigation water quality assessment and a new approach to its treatment using photocatalytic technique: Case study yaakob village,sw sohag,Egypt

Agricultural and human effluents into water resources have an adverse effect on water quality. this work investigates the current status of irrigation water quality and presents new approaches for organic residuals and bacteria contaminants removal from water in yaakob village sw sohag governorate,egypt. the studied physico-chemical parameters of water samples indicate the suitability of water for irrigation,except its considerable high content of chemical oxygen demand (cod) and bacteria. the gc-ms results indicate the presence of herbicide (pyridine carboxylic acid) and fungicide (3,4-dihydrothienyl-[3,4,b]-5-carboxythiophene) residuals in the studied samples. the application of advanced photocatalytic technique using tio2 doped with nitrogen and fluorine in presence of uv-visible light for the removal of organics and bacteria from water has been evaluated. it has shown good efficiency towards the removal of about 86.9% and 100% of the dissolved organics and bacteria,respectively. the mechanism of photocatalytic degradation of organics and bacteria has been illustrated. © 2017,university of mohammed premier oujda morocco.