Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; University of Chinese Academy of Sciences, Beijing 100049, China.
Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; CAS Engineering Laboratory for Green Fertilizers, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.
Sci Total Environ. 2022 Dec 10;851(Pt 2):158253. doi: 10.1016/j.scitotenv.2022.158253. Epub 2022 Aug 28.
The potential of industrial effluents from vitamin C (VC) production was assessed for agricultural applications by monitoring plant growth, soil properties, and microbial community structure. The results demonstrated that two types of effluents-residue after evaporation (RAE) and concentrated bacterial solution after ultrafiltration (CBS)-had positive effects on the yield and VC content of pak choi. The highest yield and VC content were achieved with a combined RAE-CBS treatment (55.82 % and 265.01 % increase, respectively). The soil fertility was also enhanced by the application of RAE and CBS. Nitrate nitrogen and organic carbon contents in the soil were positively correlated with the RAE addition, while ammonium nitrogen and available phosphorus were positively correlated with the CBS addition. The diversity of bulk and rhizosphere soil bacterial communities increased significantly after the addition of RAE-CBS. The abundance of Sphingomonas and Rhizobium significantly increased after the RAE-CBS treatment, which affected aromatic compound hydrolysis and nitrogen fixation positively. Changes in plant growth and soil fertility were closely related to the upregulation of functional gene expression related to C, N, and P cycling. RAE and CBS application exerted various positive synergistic effects on plant growth, soil fertility, and bacterial community structure. Consequently, the study results confirmed the potential of RAE and CBS application in agriculture. This study provides an innovative solution for utilizing VC industrial wastewater in agriculture in a resourceful and economically beneficial manner while alleviating the corresponding environmental burden.
工业废水中的维生素 C（VC）生产潜力，通过监测植物生长、土壤特性和微生物群落结构，评估其在农业中的应用。结果表明，两种类型的废水——蒸发后的残渣（RAE）和超滤后的浓缩细菌溶液（CBS）——对白菜的产量和 VC 含量有积极影响。RAE-CBS 联合处理的产量和 VC 含量最高，分别增加了 55.82%和 265.01%。RAE 和 CBS 的应用也提高了土壤肥力。土壤中的硝态氮和有机碳含量与 RAE 的添加呈正相关，而铵态氮和有效磷与 CBS 的添加呈正相关。添加 RAE-CBS 后，土壤和根际土壤细菌群落的多样性显著增加。添加 RAE-CBS 后，鞘氨醇单胞菌和根瘤菌的丰度显著增加，这对芳香族化合物水解和固氮有积极影响。植物生长和土壤肥力的变化与与 C、N 和 P 循环相关的功能基因表达的上调密切相关。RAE 和 CBS 的应用对植物生长、土壤肥力和细菌群落结构产生了各种积极的协同作用。因此，研究结果证实了 RAE 和 CBS 在农业中的应用潜力。本研究为农业中利用 VC 工业废水提供了一种创新的解决方案，在减轻相应环境负担的同时，实现了资源利用和经济有益的目标。
