eprintid: 3058 rev_number: 2 eprint_status: archive userid: 1 dir: disk0/00/00/30/58 datestamp: 2023-11-09 15:51:19 lastmod: 2023-11-09 15:51:19 status_changed: 2023-11-09 15:44:53 type: article metadata_visibility: show creators_name: Zahed, M.A. creators_name: Aziz, H.A. creators_name: Isa, M.H. creators_name: Mohajeri, L. title: Response Surface Analysis to Improve Dispersed Crude Oil Biodegradation ispublished: pub keywords: biodegradation; bioremediation; correlation; crude oil; nitrogen; oil spill; optimization; phosphorus; pollutant removal; regression analysis; surface; variance analysis note: cited By 26 abstract: 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. date: 2012 official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84857747106&doi=10.1002%2fclen.200900215&partnerID=40&md5=5e7e6012d177d02601b19481a22d8ee3 id_number: 10.1002/clen.200900215 full_text_status: none publication: Clean - Soil, Air, Water volume: 40 number: 3 pagerange: 262-267 refereed: TRUE issn: 18630650 citation: Zahed, M.A. and Aziz, H.A. and Isa, M.H. and Mohajeri, L. (2012) Response Surface Analysis to Improve Dispersed Crude Oil Biodegradation. Clean - Soil, Air, Water, 40 (3). pp. 262-267. ISSN 18630650