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首页> 外文期刊>Energy Conversion & Management >Utilization of distillery stillage for energy generation and concurrent production of valuable microalgal biomass in the sequence: Biogas-cogeneration-microalgae-products
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Utilization of distillery stillage for energy generation and concurrent production of valuable microalgal biomass in the sequence: Biogas-cogeneration-microalgae-products

机译：利用酒厂蒸馏产生能量并同时生产有价值的微藻生物质：沼气-热电联产-微藻类产品

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摘要

The aim of the study was the experimental verification of a proposed novel technology of energy and materials production, consisting of the following process steps: production of biogas from agricultural waste (distillery stillage), presumed utilization of biogas for electricity and heat production (cogenera-tion) in association with its use as a source of carbon dioxide for microalgae cultivation. The microalgal biomass can be hereafter processed to valuable products such as food and feed supplements. A part of the process wastewater can be utilized as a nitrogen source (ammonium ions) for microalgae cultivation, so the whole process is technologically closed. The tests were performed in a pilot-scale device. Optimization of biogas production from distillery stillage is described. The growth kinetics of microalgae Chlorella sp. Consuming biogas or mixture of air and carbon dioxide in the concentration range of 2-20% (v/v) (simulating a flue gas from biogas incineration) in laboratory-scale photo-bioreactors are presented. It was proven that the raw biogas (even without the removal of hydrogen sulphide) could be used as a source of carbon dioxide for growth of microalgae. The growth rate of microalgae consuming biogas was the same as the growth rate of the culture grown on a mixture of air and food-grade carbon dioxide. Using biogas as a source of carbon dioxide has two main advantages: the biomass production costs are reduced and the produced biomass does not contain harmful compounds, which can occur in flue gases. The microalgal growth in bubbled cylinders was typically linear with time. The growth rate dependence on the diameter of the photobioreactor can be correlated using an empirical formula M = 2.2 D~(-8) (valid for the linear bubbling velocities in the range of w = 0.1-0.3 cm/s), where M is the growth rate in g/L/h, and D is the photobioreactor diameter in mm. Processing of the fermenter wastewater was also quantified. Particularly the removal of ammonia via distillation of the previously alkalized digested sludge was investigated. The possible reuse of ammonia as a fertilizer or as a nitrogen source for microalgae cultivation was examined. About 10% of the distillate (free ammonia concentration up to 20 g/L) can be utilized. The process can be economically viable if a suitable photobioreactor is chosen and the electricity, microalgal biomass and the fertilizer production are valued.
机译：该研究的目的是对一种提议的能源和材料生产新技术进行实验验证，该技术包括以下处理步骤：从农业废弃物（蒸馏酒）生产沼气，推定沼气用于发电和供热（cogenera- ”）作为其用于微藻培养的二氧化碳来源。此后可以将微藻生物质加工成有价值的产品，例如食品和饲料补充剂。过程废水的一部分可以用作微藻培养的氮源（铵离子），因此整个过程在技术上是封闭的。测试在中试规模的设备中进行。描述了从酿酒厂蒸馏产生的沼气的优化。微藻小球藻的生长动力学。介绍了在实验室规模的光生物反应器中使用浓度范围为2-20％（v / v）（模拟来自沼气焚烧的烟道气）的沼气或空气与二氧化碳的混合物。事实证明，原始沼气（即使不去除硫化氢）也可以用作微藻生长的二氧化碳来源。消耗微藻类沼气的增长率与在空气和食品级二氧化碳的混合物上生长的培养物的增长率相同。使用沼气作为二氧化碳的来源有两个主要优点：降低了生物质的生产成本，并且所产生的生物质不包含可能在烟道气中发生的有害化合物。气泡圆筒中的微藻生长通常随时间呈线性关系。可以使用经验公式M = 2.2 D〜（-8）（对于在w = 0.1-0.3 cm / s范围内的线性起泡速度有效）将生长速率对光生物反应器直径的依赖性进行关联。以g / L / h为单位的生长速率，D为以mm为单位的光生物反应器直径。还对发酵罐废水的处理进行了量化。特别地，研究了通过蒸馏先前碱化的消化污泥除去氨的方法。研究了将氨用作微藻培养的肥料或氮源的可能再利用。可以利用约10％的馏出液（游离氨浓度高达20 g / L）。如果选择合适的光生物反应器，并且电力，微藻生物量和肥料产量得到重视，则该方法在经济上是可行的。

著录项

  • 来源
    《Energy Conversion & Management》 |2010年第3期|606-611|共6页
  • 作者

    Irena Douskova; rnFrantisek Kastanek; rnYwette Maleterova; rnPetr Kastanek; rnJiri Doucha; rnVilem Zachleder;

  • 作者单位

    Laboratory of Cell Cycles of Algae, Department of Autotrophic Microorganisms, Institute of Microbiology of the Academy of Sciences of the Czech Republic, Novohradska 237, 379 81 Trebon - Opatovicky mlyn, Czech Republic;

    rnInstitute of Chemical Process Fundamentals of the Academy of Sciences of the Czech Republic, Rozvojova 135, 16502 Prague 6 - Suchdol, Czech Republic;

    rnInstitute of Chemical Process Fundamentals of the Academy of Sciences of the Czech Republic, Rozvojova 135, 16502 Prague 6 - Suchdol, Czech Republic;

    rnBiocen, Ltd., Ondrickova 1246/13, 13000 Praha - Zizkov, Czech Republic;

    rnLaboratory of Cell Cycles of Algae, Department of Autotrophic Microorganisms, Institute of Microbiology of the Academy of Sciences of the Czech Republic, Novohradska 237, 379 81 Trebon - Opatovicky mlyn, Czech Republic;

    rnLaboratory of Cell Cycles of Algae, Department of Autotrophic Microorganisms, Institute of Microbiology of the Academy of Sciences of the Czech Republic, Novohradska 237, 379 81 Trebon - Opatovicky mlyn, Czech Republic;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    biogas; stillage; microalgae; chlorella; waste recovery; carbon dioxide;

    机译：沼气酒糟微藻小球藻废物回收;二氧化碳;

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