Phycoremediation of wastewater using algal-bacterial photobioreactor: Effect of nutrient load and light intensity

被引：2

作者：

Ashok V. ^{[1
]}

Shriwastav A. ^{[2
]}

Bose P. ^{[1
]}

Gupta S.K. ^{[3
]}

机构：

[1] Department of Civil Engineering, Indian Institute of Technology Kanpur, Kanpur

[2] Centre for Environmental Science and Engineering, Indian Institute of Technology Bombay, Mumbai

[3] Environmental Engineering, Department of Civil Engineering, Indian Institute of Technology Delhi

来源：

Bioresource Technology Reports | 2019年 / 7卷

关键词：

Algal-bacterial photobioreactor; Chlamydomonas reinhardtii; Chlorella vulgaris; Light emitting diode; Light intensity; Nutrient removal;

D O I：

10.1016/j.biteb.2019.100205

中图分类号：

学科分类号：

摘要：

The current study demonstrates the nutrient removal efficiency of algal-bacterial photobioreactors in the semi-batch mode for secondary treated domestic wastewater. The experiments were conducted to predict the optimum conditions for running a photobioreactor at a comparatively larger scale. The main focus was on optimizing illumination costs and nutrient removal efficiency to make reactor construction and operation economically viable. Chlorella vulgaris and Chlamydomonas reinhardtii were used for the experiments. Various input parameters were varied, and nutrient removal efficiencies along with biomass, chlorophyll-a content, temperature, pH, alkalinity, dissolved organic carbon, and dissolved oxygen were monitored. Model simulations were also run to confirm optimum performance. A maximum of ~25 mg l−1 N and ~10 mg l−1 P were found to be efficiently removed within 2 days hydraulic retention time (HRT), 9 h:3 h light: dark condition and 1543 μmol photons m2 s−1 light intensity. The results demonstrate superior nutrient removal efficiency than similar to previous studies. © 2019 Elsevier Ltd

引用

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