Journal
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Volume 27, Issue 10, Pages 10811-10821Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-020-07640-8
Keywords
Microcystin-RR; Biodegradation; Activated carbon fibers; Sphingopyxis sp; YF1; Nutrient pollutants
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Funding
- National Natural Science Foundation of China [21676305]
- College Students' Innovation Project of Central South University [ZY20180894]
- Central South University Innovation Driven Project [20170027010004]
- Hunan Provincial Natural Science Foundation of China [2019JJ40399]
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A novel biological material named activated carbon fibers-sodium alginate@Sphingopyxis sp. YF1 (ACF-SA@YF1) was synthesized for microcystin-RR (MC-RR) and nutrient pollutant degradation in eutrophic water. The synthesized biomaterial was characterized by scanning electron microscopy (SEM). Box-Behnken design and response surface methodology (RSM) were utilized for the optimization of conditions during the MC-RR degradation. The degradation of MC-RR and nutrient pollutants was dynamically detected. The results revealed that the optimal conditions were temperature 32.51 degrees C, pH 6.860, and inoculum 14.97%. The removal efficiency of MC-RR, nitrogen, phosphorus, and chemical oxygen demand were 0.76 mu g/mL/h, 32.45%, 94.57%, and 64.07%, respectively. In addition, ACF-SA@YF1 also performed satisfactory cyclic stability, while the MC-RR removal efficiency was 70.38% after seven cycles and 78.54% of initial activity after 20 days of storage. Therefore, it is reasonable to believe that ACF-SA@YF1 is an effective material which has a great prospect in removing MC-RR and nutrients from freshwater ecosystems.
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