氧化锌纳米粒子在利用铜绿假单胞菌和金黄色葡萄球菌处理污水中的作用。

Role of zinc oxide nanoparticles for effluent treatment using Pseudomonas putida and Pseudomonas aureofaciens.

机构信息

Department of Chemical Engineering, Sardar Vallabhbhai National Institute of Technology, Surat, Gujarat, 395007, India.

Department of Biotechnology, V. V. P. Engineering College, Rajkot, Gujarat, 360005, India.

出版信息

Bioprocess Biosyst Eng. 2019 Feb;42(2):187-198. doi: 10.1007/s00449-018-2024-y. Epub 2018 Oct 25.

DOI:10.1007/s00449-018-2024-y

PMID:30362046

Abstract

The biological treatment of textile effluent is enhanced by the use of zinc oxide (ZnO) nanoparticles for the reduction in chemical oxygen demand (COD) from its initial value of 1700 ppm. The present research investigated the effect of ZnO nanoparticles when microbial cultures of Pseudomonas putida and Pseudomonas aureofaciens were used to treat textile effluent in three-phase inverse fluidized bed bioreactor. The parameters like-size of ZnO nanoparticles, static bed height, superficial gas velocities and solid media particle size-together affected the COD reduction and all of these were investigated in this paper. ZnO nanoparticles of 280 nm reduced the maximum COD to 47 ppm (97.24%) at low gas velocity of 0.0027 m/s at 10% inoculum size and at a static bed height of 2.43 cm.

摘要

氧化锌（ZnO）纳米颗粒可增强纺织废水的生物处理，降低化学需氧量（COD），初始 COD 值为 1700ppm。本研究采用假单胞菌（Pseudomonas putida）和黄单胞菌（Pseudomonas aureofaciens）微生物培养物，在三相内循环流化床生物反应器中处理纺织废水，考察了 ZnO 纳米颗粒的影响。纳米颗粒尺寸、静态床层高度、表面气体速度和固体介质颗粒大小等参数共同影响 COD 去除率，本文对此进行了研究。280nm 的 ZnO 纳米颗粒在低气体速度（0.0027m/s）、10%接种量和静态床层高度为 2.43cm 的条件下，最大 COD 降低至 47ppm（97.24%）。