Department of Environmental Science, Faculty of Science, Chulalongkorn University, Bangkok, Thailand.
Thammasat School of Engineering, Thammasat University, Pathumthani, Thailand.
Waste Manag. 2022 Jan 1;137:264-274. doi: 10.1016/j.wasman.2021.11.023. Epub 2021 Nov 20.
Bioponics has the potential to recover nutrients from organic waste streams, such as chicken manure and digestate with high volatile fatty acid (VFA) contents through crop production. Acetic acid, a dominant VFA, was supplemented weekly (0, 500, 1000, and 1500 mg/L) in a chicken manure-based bioponic system, and its effect on the performance of bioponics (e.g., plant yield and nitrogen and phosphorus availabilities) was examined. Microbial communities were analyzed using 16S rRNA gene sequencing, and the functional gene abundances were predicted using PICRUSt. Although acetic acid negatively affected plant yield, no significant difference (p > 0.05) was noted in the average nitrogen or phosphorus concentration. In terms of nutrient recovery, the bioponic systems still functioned well, although higher concentrations of acetic acid decreased plant yield and altered the bacterial communities in plant roots and chicken manure sediments. These data suggest that an acetic acid concentration of < 500 mg/L or a longer loading interval is recommended for the effective operation of chicken manure and digestate-based bioponics.
生物动力学具有从有机废物流中回收养分的潜力，例如通过作物生产从含有高挥发性脂肪酸 (VFA) 的鸡粪和消化物中回收养分。每周在基于鸡粪的生物动力学系统中补充乙酸（一种主要的 VFA），浓度分别为 0、500、1000 和 1500 mg/L，研究其对生物动力学性能（例如，植物产量和氮磷利用率）的影响。使用 16S rRNA 基因测序分析微生物群落，并使用 PICRUSt 预测功能基因丰度。尽管乙酸对植物产量有负面影响，但平均氮或磷浓度没有显著差异（p > 0.05）。就养分回收而言，生物动力学系统仍然运行良好，尽管较高浓度的乙酸降低了植物产量，并改变了植物根系和鸡粪沉积物中的细菌群落。这些数据表明，建议将鸡粪和消化物基生物动力学的乙酸浓度控制在<500mg/L 或更长的加载间隔，以实现有效运行。
