Renewable Energy, Bioenergy and Bioenvironmental Engineering Research Group, Department of Chemical Engineering, Delta State University, Abraka, Oleh Campus, Oleh, Delta State, Nigeria.
Department of Petroleum Engineering, Delta State University, Oleh Campus, P. M. B. 22, Oleh, Nigeria.
Environ Monit Assess. 2023 Sep 5;195(10):1145. doi: 10.1007/s10661-023-11667-y.
Crude oil pollution poses a serious threat to the aquatic environment. Hence, there is an increasing interest in developing an efficient cleaner process technique for oil spill cleanup via agricultural biomass waste-organic sorbent utilization. This work evaluated the effects of independent biosorptive removal at three varying levels (initial concentration of crude oil (Z, 7.8-15.6 g/L), seawater-oil temperature (Z, 25-45 °C), sorbent dose (Z, 1-3 g), and sorbent particle size diameter (Z, 1.18-4.72 mm)) on the biosorptive removal efficiency and biosorptive capacity performance of maize cob sorbent for crude oil biosorptive removal from seawater. Experiments were designed based on Taguchi orthogonal array experimental design (L(3)) to study the effects and process optimization. The results revealed that the maize cob sorbent's crude oil biosorptive removal efficiency is related to Z, Z, and Z, while the biosorptive capacity is related to Z and Z. The optimum biosorptive removal efficiency and the biosorptive capacity values were 96.53% and 12.64 g/g, respectively, achieved at optimum factors of Z (7.8 g/L), Z (3 g), and Z (1.18 mm), as well as at Z (15.6 g) and Z (1 g). The isotherm and kinetic data, respectively, followed the Langmuir isotherms and the pseudo-second-order kinetics with a maximum monolayer biosorptive capacity of 23.31 g g. The mechanism of biosorptive crude oil removal was by physical sorption and film diffusion control. Therefore, the maize cob represents an inexpensive and effective natural sorbent for oil spill removal from water bodies.
原油污染对水生环境构成严重威胁。因此，人们越来越感兴趣的是开发一种有效的清洁工艺技术，通过利用农业生物质废物-有机吸附剂来清理溢油。本工作评估了在三个不同水平（原油初始浓度（Z，7.8-15.6 g/L）、海水-油温度（Z，25-45°C）、吸附剂剂量（Z，1-3 g）和吸附剂粒径（Z，1.18-4.72 mm））下独立的生物吸附去除对玉米芯吸附剂从海水中吸附去除原油的生物吸附去除效率和生物吸附容量性能的影响。实验设计基于 Taguchi 正交数组实验设计（L(3)），以研究影响和过程优化。结果表明，玉米芯吸附剂对原油的生物吸附去除效率与 Z、Z 和 Z 有关，而生物吸附容量与 Z 和 Z 有关。最佳生物吸附去除效率和生物吸附容量值分别为 96.53%和 12.64 g/g，在最佳因子 Z（7.8 g/L）、Z（3 g）和 Z（1.18 mm）以及 Z（15.6 g/L）和 Z（1 g）下达到。等温线和动力学数据分别遵循 Langmuir 等温线和拟二级动力学，最大单层生物吸附容量为 23.31 g/g。生物吸附去除原油的机制是通过物理吸附和膜扩散控制。因此，玉米芯是一种廉价有效的天然吸附剂，可用于从水体中去除溢油。
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