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 °C, pH 6.860, and inoculum 14.97%. The removal efficiency of MC-RR, nitrogen, phosphorus, and chemical oxygen demand were 0.76 μg/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.

中文翻译：

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使用Sphingopyxis sp。对微囊藻毒素-RR和营养污染物进行生物降解。YF1固定的活性炭纤维-海藻酸钠。

一种名为活性炭纤维的新型生物材料-海藻酸钠@ Sphingopyxis sp。合成了YF1（ACF-SA @ YF1）用于微囊藻毒素-RR（MC-RR）和富营养化水中的营养污染物降解。合成的生物材料通过扫描电子显微镜（SEM）表征。Box-Behnken设计和响应面方法（RSM）用于优化MC-RR降解过程中的条件。动态检测MC-RR和营养污染物的降解。结果表明，最佳条件为温度32.51°C，pH 6.860和接种量14.97％。MC-RR，氮，磷和化学需氧量的去除效率分别为0.76μg/ mL / h，32.45％，94.57％和64.07％。此外，ACF-SA @ YF1还具有令人满意的循环稳定性，七个循环后的MC-RR去除效率为70.38％，储存20天后的初始活性为78.54％。因此，有理由相信ACF-SA @ YF1是一种有效的材料，在从淡水生态系统中去除MC-RR和养分方面具有广阔的前景。