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首页> 外文期刊>Bioenergy research >Growth of an Indigenous Algal Consortium on Anaerobically Digested Municipal Sludge Centrate: Photobioreactor Performance and Modeling
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Growth of an Indigenous Algal Consortium on Anaerobically Digested Municipal Sludge Centrate: Photobioreactor Performance and Modeling

机译：在厌氧消化的城市污泥中心上的土著藻类联盟的增长：光生物反应器的性能和建模。

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摘要

Centrate from dewatering anaerobically digested municipal sludge is a particular concern in wastewater treatment, as it contains high ammonia concentrations and is often recycled to the head of the plant, reducing efficiency. Algae have the potential to remove ammonia from this wastewater, while producing biomass that can be used as an energy feedstock. In this research, an indigenous algal consortium was cultivated on municipal sludge centrate in a semi-continuous photobioreactor under natural light conditions. The goals of this research were to (1) enrich an algal consortium capable of growth on sludge centrate; (2) determine the main species of the consortium;(3) measure biomass, lipid production, and nutrient removal rates; and (4) develop a simple model to describe the system. The results suggested that Chlorella sp. was the dominant species (95 %) in the consortium. Mean biomass productivity was 5.2 g m−2 day−1, which was relatively high compared with other studies carried out with high ammonia strength wastewaters. Lipid production was low, comprising only 10 % of total biomass. The algal consortium effectively removed nutrients from the centrate, with observed mean removal efficiencies for total nitrogen, total phosphorus, and chemical oxygen demand of 65, 72, and 8 %, respectively. A simple irradiance-based model was developed from the fundamental Michaelis-Menten photosynthesis-irradiance (PI) response for photosynthetic organisms. A good fit to the experimental data was obtained with the irradiance-based model (R2 = 0.96), indicating that the system was light limited. The results show that biomass production can be predicted based on irradiance only.
机译：厌氧消化的城市污泥脱水后的浓缩液在废水处理中尤为重要，因为它含有高浓度的氨，并且经常循环到工厂的顶部，从而降低了效率。藻类有潜力从废水中去除氨气，同时产生可用作能源原料的生物质。在这项研究中，在自然光条件下，在半连续的光生物反应器中，在市政污泥浓缩物中培养了一个本地藻类财团。这项研究的目的是（1）富集能够在污泥浓缩液上生长的藻类联合体； （2）确定财团的主要种类;（3）测量生物量，脂质产生和营养去除率; （4）开发一个简单的模型来描述系统。结果表明，小球藻属。是财团中的优势物种（95％）。平均生物量生产力为5.2 g·m-2·day-1，与使用高氨强度废水进行的其他研究相比，相对较高。脂质产量低，仅占总生物量的10％。藻类联盟有效地从浓缩物中去除了养分，观察到的总氮，总磷和化学需氧量的平均去除效率分别为65％，72％和8％。一个简单的基于辐照度的模型是从针对光合生物的基本Michaelis-Menten光合作用-辐照度（PI）响应中开发的。使用基于辐照度的模型（R2 = 0.96）可以很好地拟合实验数据，表明该系统受光限制。结果表明，只能基于辐照度来预测生物量的产生。

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  • 来源
    《Bioenergy research》 |2015年第1期|249-258|共10页
  • 作者

    Trina Halfhide; Omatoyo K. Dalrymple; Ann C. Wilkie; John Trimmer; Benjamin Gillie; Innocent Udom; Qiong Zhang; Sarina J. Ergas;

  • 作者单位

    1.Department of Civil Environmental Engineering University of South Florida 4202 E. Fowler Ave. ENB 118 Tampa FL 33620 USA;

    1.Department of Civil Environmental Engineering University of South Florida 4202 E. Fowler Ave. ENB 118 Tampa FL 33620 USA;

    3.Soil Water Science Department Energy Research and Education Park University of Florida PO Box 110960 Gainesville FL 32611 USA;

    1.Department of Civil Environmental Engineering University of South Florida 4202 E. Fowler Ave. ENB 118 Tampa FL 33620 USA;

    2.Department of Chemical Biomedical Engineering University of South Florida 4202 E. Fowler Ave. ENB 118 Tampa FL 33620 USA;

    2.Department of Chemical Biomedical Engineering University of South Florida 4202 E. Fowler Ave. ENB 118 Tampa FL 33620 USA;

    1.Department of Civil Environmental Engineering University of South Florida 4202 E. Fowler Ave. ENB 118 Tampa FL 33620 USA;

    1.Department of Civil Environmental Engineering University of South Florida 4202 E. Fowler Ave. ENB 118 Tampa FL 33620 USA;

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  • 正文语种 eng
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  • 关键词

    Biomass production High-strength wastewater treatment Indigenous algae Natural light Semi-continuous photobioreactor Photosynthesis-irradiance model;

    机译：生物质生产高强度废水处理原生藻类自然光半连续光生物反应器光合作用-辐照度模型;

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