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Published on: August 15, 2016
Amide groups within polystyrene accelerates tetracycline removal in a continuous advanced microalgal treatment system
Chaofan Zhang1, Peng Xie1, Zeyuan Wang1
1State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, PR China.
Polystyrene enhanced microalgal removal of tetracycline in livestock wastewater. This advanced treatment boosted microalgal biomass, lipids, and energy production, offering a sustainable solution.
Area of Science:
- Environmental Science
- Biotechnology
- Microalgal Treatment
Background:
- Livestock effluents contain antibiotics and microplastics, posing treatment challenges.
- Microalgal wastewater treatment is an effective method for pollutant removal.
Purpose of the Study:
- To evaluate Chlamydomonas sp. JSC4's effectiveness in removing tetracycline (TCH) from livestock effluents influenced by polystyrene (PS).
- To assess the impact of PS on TCH removal efficiency and microalgal bioactivity.
Main Methods:
- A 45-day continuous-flow system was used.
- Microalgal treatment with Chlamydomonas sp. JSC4 was employed.
- Tetracycline and polystyrene exposure levels were controlled.
Main Results:
- Polystyrene significantly enhanced TCH dissipation, increasing removal by 9.83% at 5 mg/L TCH and PS.
- Microalgal biomass improved by 87.14% due to reduced oxidative stress and enhanced photosynthesis.
- Maximum lipid (0.57 g/L) and energy (20.79 kJ/L) production was observed.
Conclusions:
- Polystyrene aids microalgal removal of tetracycline and mitigates toxicity.
- Enhanced microalgal bioactivity and metabolism improve pollutant removal.
- This method offers a promising tertiary treatment for livestock effluents, increasing lipid and energy production.
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