期刊
WATER RESEARCH
卷 42, 期 16, 页码 4357-4367出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.watres.2008.07.029
关键词
Phototrophic biofilms; Biomass production; Phosphorus removal; Wastewater; Energy Filtered-Transmission; Electron Microscopy (EF-TEM); Electron Spectroscopy Imaging (ESI)
资金
- EU-Programme Quality of Life [QLK3-CT2002-01938]
- Fundacao para a Ciencia e a Tecnologia (Portugal) [SFRH/BPD/25967/2005]
- Fundação para a Ciência e a Tecnologia [SFRH/BPD/25967/2005] Funding Source: FCT
Culture experiments with phototrophic biofilms taken from the sedimentation tank of the wastewater treatment plant at the Fiumicino Airport in Rome, Italy were carried out in a prototype continuous flow incubator. Biofilms grown at varying photosynthetic photon flux density (PPFD), temperature and flow velocity were sampled at three developmental stages to quantify biofilm dry weight, chlorophyll a concentration and total cellular phosphorus content. While no coherent significant effects by flow and temperature were evidenced, maximum biofilm dry weight and phosphorous concentration significantly increased across all featured PPFDs. Maximum chlorophyll a concentration was saturated above 60 mu mol m(-2)s(-1). A highly significant association between organic biomass and phosphorous content was observed for most light conditions, including a larger proportional increase of phosphorus concentration with respect to chlorophyll a at high PPFD. Up to 112 mg P m(-2)d(-1) maximal phosphorous removal rates were achieved. Elemental analysis by energy filtering transmission electron microscopy showed subcellular localization of phosphorus, confirming the accumulation in phototrophic microorganisms in biofilms grown in high light conditions. (C) 2008 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据