工业水处理 ›› 2023, Vol. 43 ›› Issue (11): 126-136. doi: 10.19965/j.cnki.iwt.2022-1128

• 试验研究 • 上一篇    下一篇

近红外光对光合细菌利用废水累积高价值产物的影响

王翠翠1,2,3(), 卢海凤1,2,3(), 张光明4, 司哺春1,2,3, 蒋伟忠1,2,3   

  1. 1. 中国农业大学三亚研究院,海南 三亚 572025
    2. 中国农业大学水利与土木工程学院,北京 100083
    3. 农业农村部设施农业工程重点实验室,北京 100083
    4. 河北工业大学能源与环境工程学院,天津 300131
  • 收稿日期:2023-07-27 出版日期:2023-11-20 发布日期:2023-11-21
  • 作者简介:

    王翠翠(1999— ),硕士。E-mail:

    卢海凤,副教授,博士。E-mail:

  • 基金资助:
    国家重点研发计划项目(2022YFE0135600)

Effect of near-infrared light on the accumulation of high-value products of photosynthetic bacteria from wastewater

Cuicui WANG1,2,3(), Haifeng LU1,2,3(), Guangming ZHANG4, Buchun SI1,2,3, Weizhong JIANG1,2,3   

  1. 1. Sanya Institute of China Agricultural University, Sanya 572025, China
    2. College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China
    3. Key Laboratory of Agricultural Engineering in Structure and Environment of MOARA, Beijing 100083, China
    4. College of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300131, China
  • Received:2023-07-27 Online:2023-11-20 Published:2023-11-21

摘要:

利用光合细菌(PSB)对废水进行处理可以同时实现对污染物的降解与生物质资源的转化利用。PSB的光合作用中心吸收光谱位于近红外光光谱范围内,因此近红外光可能是提高PSB废水资源化效率的有利条件。探索了近红外光对采用沼泽红假单胞菌(R. palustris)实现废水资源化效果的影响,结果表明,近红外光有利于提高R. palustris从废水中累积高价值生物质的能力。近红外光单独作用可将R. palustris的指数增长期缩短为2 d并提高其生物量与色素产量,实验条件下生物质质量浓度与菌体产率分别为1 156.22 mg/L与(0.282±0.031) g/g,类胡萝卜素和菌绿素最高质量浓度分别为5.48、44.00 mg/L;近红外光与自然光叠加有利于累积辅酶Q10(CoQ10),实验条件下干菌体中CoQ10质量分数可达41.83 mg/g;近红外光与白炽灯叠加可提高R. palustris蛋白质产率并提高污水处理效率,实验条件下蛋白质质量浓度与产率分别高达790.76 mg/L与(3.625±0.156) g/g,对污水中COD和NH4 +-N去除率分别达80.84%、91.44%。近红外光的使用为提高PSB污水资源化效率提供了新的方法与思路。

关键词: 沼泽红假单胞菌, 光合细菌, 近红外光, 废水资源化

Abstract:

The degradation of pollutants and the utilization of biomass can be simultaneously realized with photosynthetic bacteria (PSB) for wastewater treatment. The photosynthetic center absorption spectrum of PSB is in the range of near-infrared light spectrum, which may be favorable conditions to improve the utilization efficiency of resource in the wastewater with PSB treatment. This study focused on exploring the effects of the near-infrared light on the utilization of wastewater resource with R. palustris. The results showed that the near-infrared light could facilitate the accumulation of high-value biomass from wastewater with R. palustris. With only the near-infrared light, the growth period of R. palustris was shortened to 2 days, as well as biomass accumulation and pigments production were enhanced. Meanwhile, the biomass mass concentration and biomass yield reached to the highest level of 1 156.22 mg/L and (0.282±0.031) g/g, respectively. The mass concentration of carotenoids and bacteriochlorophyll reached to the highest level of 5.48 and 44.00 mg/L, respectively. The superposition of the near-infrared light and natural light facilitated the synthesis of Co-enzyme Q10 (CoQ10), with mass fraction reached as 41.83 mg/g. The superimposition of near-infrared light and incandescent light promoted protein yield of R. palustris and improved wastewater treatment efficiency. The mass concentration and yield of protein were as high as 790.76 mg/L and (3.625±0.156) g/g. COD and NH4 +-N removal rates reached 80.84% and 91.44%, respectively. The application of near-infrared light provides new methods for improving the utilization efficiency of wastewater resource with PSB.

Key words: R. palustris, photosynthetic bacteria, near-infrared light, wastewater resource recovery

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