Isolation of potassium solubilizing bacteria in soil and preparation of liquid bacteria fertilizer from food wastewater
文献类型： 外文期刊
作者： Wang, Yongjing 1 ; Yan, Xinyu 1 ; Su, Ming 2 ; Li, Jinglin 4 ; Man, Tao 1 ; Wang, Songtao 1 ; Li, Cheng 5 ; Gao, Song 1 ; Zhang, Ruolin 6 ; Zhang, Minglu 1 ; Wang, Pan 1 ; Jia, Xuan 1 ; Ren, Lianhai 1 ;
作者机构： 1.Beijing Technol & Business Univ, State Environm Protect Key Lab Food Chain Pollut, Beijing 100048, Peoples R China
2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Drinking Water Sci & Technol, Beijing 100085, Peoples R China
3.Beijing Technol & Business Univ, Key Lab Cleaner Prod & Integrated Resource Utiliz, Beijing 100048, Peoples R China
4.China IPPR Int Engn Co Ltd, Beijing 100089, Peoples R China
5.Beijing Acad Agr & Forestry Sci, Beijing Res Ctr Agr Stand & Testing, Beijing 100097, Peoples R China
6.Inst Sci & Tech Informat China, Beijing 100038, Peoples R China
关键词： Food wastewater; Hydrothermal treatment (HT); Potassium solubilizing bacteria (KSB); Soil fertility; Plant growth promotion
期刊名称：BIOCHEMICAL ENGINEERING JOURNAL （ 影响因子：4.446； 五年影响因子：4.455 ）
ISSN： 1369-703X
年卷期： 2022 年 181 卷
页码：
收录情况： SCI
摘要： The production of food wastewater generated during the food waste treatment processes was tremendous, and large amounts of water-soluble organic matter dissolved into the food wastewater, which originate serious problems of both environmental and economic loss. However, food wastewater is abundance in organic matters without toxic substances, which is conducive to the growth of microorganisms. This study investigated the application of food wastewater after the food waste hydrothermal treatment (HT) to prepare potassium solubilizing bacteria (KSB) fertilizer. Two highly efficient KSB, Escherichia vulneris (K1) and Bacillus cereus (K2), were isolated from farmland soil and inoculated into the food wastewater, the organic matter content of which could be significantly increased after HT. In addition, pH, SCOD, and reducing sugar have significant effects on the growth of KSB. The optimal culture scheme of K2 in food wastewater was pH 8, temperature 30 celcius, table rotational speed 160 rpm, and inoculation amount 1.5%. The available K concentration of soil increased by 28.41 mg/kg as inoculated K2 fertilizer, which increased the garlic plant height by 23.53% and significantly affected plant height, maximum leaf width, maximum leaf length, fresh weight, and dry weight (P < 0.05).
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