CAJ | 학술논문

通过模拟实验研究了不同活性的自然水体生物膜在光照条件下生成过氧化氢(H2 O2)的反应。并研究了光照对自然水体生物膜体系中十二烷基苯磺酸钠(SDBS)降解的影响,结合无生物膜 H2 O2溶液中 SDBS的降解实验,验证了 H2 O2对 SDBS 降解的作用。结果表明,具有生物活性的生物膜可以生成 H2 O2,而无活性和光合作用受到抑制的生物膜则不能生成 H2 O2；光照条件下,生物膜体系中 SDBS 的降解量明显高于无光照条件下的；光照和 Fe2+对 H2 O2降解 SDBS 有促进作用。
통과모의실험연구료불동활성적자연수체생물막재광조조건하생성과양화경(H2 O2)적반응。병연구료광조대자연수체생물막체계중십이완기분광산납(SDBS)강해적영향,결합무생물막 H2 O2용액중 SDBS적강해실험,험증료 H2 O2대 SDBS 강해적작용。결과표명,구유생물활성적생물막가이생성 H2 O2,이무활성화광합작용수도억제적생물막칙불능생성 H2 O2；광조조건하,생물막체계중 SDBS 적강해량명현고우무광조조건하적；광조화 Fe2+대 H2 O2강해 SDBS 유촉진작용。
In this study, generation of H2 O2(hydrogen peroxide) by natural biofilms of different bioactivities under light irradiation was investigated, and effect of light on sodium dodecyl benzene sulfonate(SDBS) degra-dation in such natural biofilm-water systems was evaluated. The role of H2 O2 in the degradation of SDBS was also verified by SDBS degradation experiments in H2 O2 solution without biofilms. The results indicated that:(1) biofilms with full bio-activity can generate H2 O2 , while biofilms without any bio-activity or bio-activity of photosynthesis can not generate H2 O2; (2) much more SDBS can be degraded under visible light than in darkness; (3) light and Fe2+ can promote the degradation of SDBS in the presence of H2 O2 . H2 O2 produced by natural biofilms should be one of the most important causes of the degradation of SDBS, and the roles of H2 O2 in the degradation should include both direct oxidation of SDBS by H2 O2 and the indirect role in genera-ting active oxygen species.