Department of Environmental Science, Faculty of Science, Chulalongkorn University, Bangkok, Thailand.
Environmental Engineering and Management, School of Environment, Resources and Development, Asian Institute of Technology, Pathumthani, Thailand.
Waste Manag. 2021 Apr 15;125:67-76. doi: 10.1016/j.wasman.2021.02.014. Epub 2021 Mar 5.
Bioponics integrates the biological treatment of nutrient-rich waste streams with hydroponics. However, there are several challenges of bioponics, especially nutrient availability and qualities, which affect plant yield. In this study, chicken manure based-nutrient film technique bioponics was examined at manure loadings of 200, 300, and 400 g dry wt. per bioponic system (total of 18 plants). Bioponics effectively released nitrogen and phosphorus (total ammonia nitrogen of 5.8-8.0 mgN/L, nitrate of 7.0-11.2 mgN/L, and phosphate of 48.7-74.2 mgP/L) for efficient growth of lettuce (Lactuca sativa; total yield of 1208-2030 g wet wt. per 18 plants). Nitrogen and phosphorus use efficiencies were 35.1-41.8% and 6.8-8.0%, respectively, and were comparable to aquaponics. Next-generation sequencing was used to examine the microbial communities in digested chicken manure and plant roots in bioponics. Results showed that several microbial genera were associated with organic degradation (e.g., Nocardiopsis spp., Cellvibrio spp.), nitrification (Nitrospira spp.), phosphorus solubilization, and plant growth promotion (e.g., WD2101_soil_group, and Bacillus spp.). Nocardiopsis spp., Romboutsia spp. and Saccharomonospora spp. were found at high abundances and a high degree of co-occurrences among the microbiota, suggesting that the microbial organic decomposition to nitrogen and phosphorus release could be the key factors to achieve better nutrient recovery in bioponics.
水培学将富含营养的废物流的生物处理与水培学相结合。然而，水培学存在几个挑战，特别是养分的有效性和质量，这会影响植物的产量。在这项研究中，鸡粪营养膜技术水培学在鸡粪负荷为 200、300 和 400g 干重/水培系统（总共 18 株植物）下进行了检查。水培学有效地释放了氮和磷（总氨氮为 5.8-8.0mgN/L，硝酸盐为 7.0-11.2mgN/L，磷酸盐为 48.7-74.2mgP/L），从而有效地促进了生菜（Lactuca sativa）的生长（每 18 株植物的湿重总产量为 1208-2030g）。氮和磷的利用率分别为 35.1-41.8%和 6.8-8.0%，与水产养殖相当。下一代测序用于检查消化鸡粪和水培植物根系中的微生物群落。结果表明，几个微生物属与有机降解（例如，Nocardiopsis spp.、Cellvibrio spp.）、硝化（Nitrospira spp.）、磷溶解和植物生长促进（例如，WD2101_soil_group 和 Bacillus spp.）有关。Nocardiopsis spp.、Romboutsia spp.和 Saccharomonospora spp.的丰度较高，微生物群之间的共现程度较高，这表明微生物对有机物质的分解到氮和磷的释放可能是实现水培学中更好的养分回收的关键因素。
