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Membrane Processes for Resource Recovery from Anaerobically Digested Livestock Manure Effluent: Opportunities and Challenges

文献类型： 外文期刊

作者： Zhang, Zhiye 1 ; Xu, Zhicheng 2 ; Song, Xiaoye 3 ; Zhang, Bangxi 4 ; Li, Guoxue 2 ; Huda, Nazmul 5 ; Luo, Wenhai 2 ;

作者机构： 1.Peking Univ, Coll Urban & Environm Sci, Beijing 100871, Peoples R China

2.China Agr Univ, Coll Resoroces & Environm Sci, Beijing Key Lab Farmland Soil Pollut Prevent & Re, Beijing 100193, Peoples R China

3.Beijing Univ Technol, Engn Res Ctr Beijing, Natl Engn Lab Adv Municipal Wastewater Treatment, Beijing 100124, Peoples R China

4.Guizhou Acad Agr Sci, Inst Soil & Fertilizer, Guiyang 550006, Guizhou, Peoples R China

5.Macquarie Univ, Sch Engn, Sustainable Energy Syst Engn Grp, Sydney, NSW 2109, Australia

关键词： Anaerobic digestion; Livestock manure; Digested effluent; Membrane concentration; Resource recovery

期刊名称：CURRENT POLLUTION REPORTS （ 影响因子：6.373； 五年影响因子：9.43 ）

ISSN： 2198-6592

年卷期：

页码：

收录情况： SCI

摘要： Purpose of Review Membrane techniques have been employed to concentrate livestock manure effluent from anaerobic digestion to produce highly concentrated liquid organic fertilizer. This review aims to provide a comprehensive understanding on the opportunities and challenges of membrane processes in the concentration of digested effluent for their further implementation. Recent Findings Anaerobic digestion has been deployed to convert livestock manure into biogas (energy) and digestate with high potential as biofertilizer. Digestate can be separated into a solid and liquid fraction to reduce required capacity for onsite storage. The liquid fraction, known as digested effluent, remains a vexing challenge to digestate management due to the contradiction between its continuous production and seasonal application to farmlands, particularly in developing countries. Recent investigation has demonstrated the promise of membrane techniques for the concentration of digested effluent to recover recycling water and produce nutrient-rich liquid fertilizer. These techniques mainly include hydraulically driven membrane processes (from microfiltration to reverse osmosis), forward osmosis, membrane distillation, and electrodialysis. In most cases, these membrane techniques are hybridized to enhance the concentration efficiency. Nevertheless, the practical application of these membrane processes is hindered by several technical challenges, which mainly include membrane fouling, contaminant enrichment, ammonia volatilization, and high economic input. In this paper, we critically reviewed the performance of different membrane processes in the concentration of digested livestock manure effluent. Key technical challenges and their potential countermeasures were elucidated. Furthermore, future perspectives were provided to shed light on further development of membrane concentration techniques in the field.

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