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Alkaline responsive self-healing nanocontainer composite reverse osmosis membrane by layer self-assembly: Enhanced permeable and chlorine resistance properties

Release time:2024-12-24  Hits:

  • Key Words:厌氧甲烷氧化;N-DAMO古菌;海洋生态系统;淡水生态系统;微塑料污染
  • Abstract:硝酸盐型厌氧甲烷氧化(Nitrate-dependent anaerobic methane oxidation, N-DAMO)对自然环境中的甲烷减排起着重要作用。近年来，由于人类活动的影响，自然环境中的微塑料含量逐渐增加。然而，微塑料对N-DAMO古菌的生态分布及功能的影响尚不清楚，微塑料在甲烷减排中的作用有待探究。本研究以淡水和海洋沉积物为对象，利用同位素示踪技术和分子生物学手段研究了不同聚氯乙烯微塑料浓度处理下沉积物中N-DAMO古菌的活性，丰度及多样性。结果表明：聚氯乙烯微塑料在短期内显著提高淡水和海洋沉积物N-DAMO古菌活性。聚氯乙烯微塑料对海洋沉积物中的N-DAMO古菌活性刺激更强。加入微塑料后，淡水和海洋沉积物的N-DAMO古菌多样性均发生改变，海洋沉积物中的N-DAMO古菌群落结构更容易受到微塑料影响。
  • Volume:v.53;No.484
  • Issue:18
  • Translation or Not:no
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