TY - JOUR SN - 18630650 EP - 267 AV - none N1 - cited By 26 SP - 262 TI - Response Surface Analysis to Improve Dispersed Crude Oil Biodegradation Y1 - 2012/// JF - Clean - Soil, Air, Water A1 - Zahed, M.A. A1 - Aziz, H.A. A1 - Isa, M.H. A1 - Mohajeri, L. UR - https://www.scopus.com/inward/record.uri?eid=2-s2.0-84857747106&doi=10.1002%2fclen.200900215&partnerID=40&md5=5e7e6012d177d02601b19481a22d8ee3 VL - 40 N2 - In this research, the bioremediation of dispersed crude oil, based on the amount of nitrogen and phosphorus supplementation in the closed system, was optimized by the application of response surface methodology and central composite design. Correlation analysis of the mathematical-regression model demonstrated that a quadratic polynomial model could be used to optimize the hydrocarbon bioremediation (R 2=0.9256). Statistical significance was checked by analysis of variance and residual analysis. Natural attenuation was removed by 22.1 of crude oil in 28 days. The highest removal on un-optimized condition of 68.1 were observed by using nitrogen of 20.00mg/L and phosphorus of 2.00mg/L in 28 days while optimization process exhibited a crude oil removal of 69.5 via nitrogen of 16.05mg/L and phosphorus 1.34mg/L in 27 days therefore optimization can improve biodegradation in shorter time with less nutrient consumption. © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. IS - 3 ID - scholars3058 KW - biodegradation; bioremediation; correlation; crude oil; nitrogen; oil spill; optimization; phosphorus; pollutant removal; regression analysis; surface; variance analysis ER -