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Toxicity alleviation for microalgae cultivation by cationic starch addition and ammonia stripping and study on the cost assessment

机译：阳离子淀粉添加和氨汽提和氨剥离和成本评估研究的毒性减轻

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Aiming at promoting microalgae-based anaerobically digested swine manure (AD-SM) treatment, this work evaluated the feasibility of removing turbidity and ammonia in swine manure by cationic starch addition and air bubbling-driven ammonia stripping. It was observed that turbidity and ammonia toxicity were two main factors limiting algae growth. Addition of cationic starch effectively reduced turbidity of AD-SM by 77.10% in 40 min. 6 L min(-1) air flow rate and 5 h stripping time were regarded as good conditions for ammonia stripping. An economic analysis was conducted to assess the feasibility of this pretreatment strategy in a pilot scale system and results indicated that unit energy input and freshwater consumption were 0.036 kW h g(-1) dry biomass and 0.76 L g(-1) dry biomass, respectively, much lower than those of a high dilution strategy. So it is a more promising and feasible way to pretreat AD-SM with low dilution by turbidity removal and ammonia stripping.
机译：旨在促进基于微藻的厌氧物质消化的猪粪（Ad-SM）处理，通过阳离子淀粉添加和空气鼓泡驱动的氨汽提，评估了去除猪粪中浊度和氨的可行性。 观察到浊度和氨毒性是限制藻类生长的两个主要因素。 在40分钟内将阳离子淀粉的添加有效地降低了77.10％的浊度。 6 L min（-1）空气流速和5小时汽提时间被认为是氨汽提的良好条件。 进行了经济分析以评估该预处理策略在试验规模系统中的可行性，结果表明，单位能量输入和淡水消耗分别为0.036kg hg（-1）干生物量和0.76Lg（-1）干生物质 远低于高稀释策略的策略。 因此，通过浊度去除和氨汽提稀释稀释，是一种更有前途和可行的方法。

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    《RSC Advances》 |2019年第65期|共11页
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  • 正文语种 eng
  • 中图分类 化学;
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