Functional Materials Laboratory (FML), School of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an, Shaanxi 710055, China.
Functional Materials Laboratory (FML), School of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an, Shaanxi 710055, China.
Bioresour Technol. 2020 Apr;301:122753. doi: 10.1016/j.biortech.2020.122753. Epub 2020 Jan 8.
Phosphorus content of the digestate is crucial for evaluating its fertilizer utilization in anaerobic digestion system. The vermiculite containing rich-phosphorus is firstly used as an accelerant in anaerobic batch co-digestion system of aloe peel waste and dairy manure. After introducing vermiculite, the cumulative biogas production (295.14-353.96 mL/g VS), chemical oxygen demand removal rate (45.53%-71.03%), and volatile solid removal rate (50.70%-52.76%) are remarkably higher than those of reference reactor (234.08 mL/g VS, 39.38%, 45.10%). The thermal and fertility analyses manifest the digestates with vermiculite possess superior stability, admirable fertilizer values (5.97%-6.81%), and excellent total phosphorus content (11.44-13.29 g/kg). The improved co-digestion performance can be attributed to the addition of vermiculite. This work introduces a novel approach for improving the performance of anaerobic co-digestion and the fertilizer utilization of digestate in the co-digestion systems.
消化液中磷的含量对评估其在厌氧消化系统中的肥料利用至关重要。首先，富含磷的蛭石被用作芦荟皮废物和奶牛粪便厌氧分批共消化系统的促进剂。引入蛭石后，累计沼气产量（295.14-353.96 mL/g VS）、化学需氧量去除率（45.53%-71.03%）和挥发性固体去除率（50.70%-52.76%）均明显高于参照反应器（234.08 mL/g VS、39.38%、45.10%）。热分析和肥力分析表明，添加蛭石的消化液具有更好的稳定性、令人满意的肥料价值（5.97%-6.81%）和优异的总磷含量（11.44-13.29 g/kg）。共消化性能的提高可归因于蛭石的添加。这项工作为提高厌氧共消化性能和共消化系统中消化液肥料利用提供了一种新方法。
