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Selection of suitable fertilizer draw solute for a novel fertilizer-drawn forward osmosis-anaerobic membrane bioreactor hybrid system

机译：一种新型肥料-正向渗透-厌氧膜生物反应器混合系统的适宜肥料溶质的选择

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In this study, a protocol for selecting suitable fertilizer draw solute for anaerobic fertilizer-drawn forward osmosis membrane bioreactor (AnFDFOMBR) was proposed. Among eleven commercial fertilizer candidates, six fertilizers were screened further for their FO performance tests and evaluated in terms of water flux and reverse salt flux. Using selected fertilizers, bio-methane potential experiments were conducted to examine the effect of fertilizers on anaerobic activity due to reverse diffusion. Mono-ammonium phosphate (MAP) showed the highest biogas production while other fertilizers exhibited an inhibition effect on anaerobic activity with solute accumulation. Salt accumulation in the bioreactor was also simulated using mass balance simulation models. Results showed that ammonium sulphate and MAP were the most appropriate for AnFDFOMBR since they demonstrated less salt accumulation, relatively higher water flux, and higher dilution capacity of draw solution. Given toxicity of sulphate to anaerobic microorganisms, MAP appears to be the most suitable draw solution for AnFDFOMBR.
机译：在这项研究中，提出了一种为厌氧施肥的正渗透膜生物反应器（AnFDFOMBR）选择合适的施肥溶质的方案。在11种商品化肥中，对6种肥料进​​行了FO性能测试，并根据水通量和反盐通量进行了评估。使用选定的肥料，进行了生物甲烷潜力实验，以检验肥料对由于反向扩散而引起的厌氧活性的影响。磷酸一铵（MAP）表现出最高的沼气产量，而其他肥料对溶质积累的厌氧活性表现出抑制作用。还使用质量平衡模拟模型模拟了生物反应器中的盐累积。结果表明，硫酸铵和MAP最适合AnFDFOMBR，因为它们显示出较少的盐累积，相对较高的水通量和较高的汲取溶液稀释能力。考虑到硫酸盐对厌氧微生物的毒性，MAP似乎是最适合AnFDFOMBR的提取溶液。

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