Treatment of olive mill effluent by adsorption on titanium oxide nanoparticles
作者： Abeer Al Bsoul , Mohammad Hailat , Arwa Abdelhay , Muhammad Tawalbeh , Inshad Jum'h
DOI: 10.1016/J.SCITOTENV.2019.06.381
关键词:
摘要: Olive mills wastewater (OMW) causes a serious environmental problem in the olive oil producing countries. This is due to its high organic matter content (COD), acidic pH values, suspended solids and of phytotoxic antibacterial phenolic compounds. In this study, titanium dioxide (TiO2) as an adsorbent reduce COD value mill was investigated. Several variables were studied including removal efficiency, effect initial value, amount TiO2, temperature value. The results revealed that adsorption reached equilibrium within <120 min. Isotherm studies showed data agreement with Freundlich isotherm. addition, process spontaneous exothermic. kinetic study indicated did follow pseudo-second order reaction. Variation TiO2 using 1.5 2 g/L caused drop from 1000 ppm about 100 ppm (equilibrium concentration) 120 min. However, use 1 g/L exhibited almost same on COD-uptake, concentration 400 ppm. uptake found be inversely proportional temperature, addition salts such sodium chloride (NaCl) potassium (KCl).
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