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首页> 外文期刊>Journal of material cycles and waste management >By-products of bioenergy systems (anaerobic digestion and gasification) as sources of plant nutrients: scope of processed application and effect on soil and crop
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By-products of bioenergy systems (anaerobic digestion and gasification) as sources of plant nutrients: scope of processed application and effect on soil and crop

机译：生物能源系统（厌氧消化和气化）作为植物营养素的副产品：加工应用范围和土壤和作物影响

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摘要

Management of the by-products generated during bioenergy conversion technologies is essential for technology sustainability and due to strict adherence to waste minimisation legislation. We investigated the potential of four types of bioenergy by-products (BEBPs), i.e. char from rice husk and digestates from 3 types of feedstocks: (i) Ipomoea carnea:cow dung (ICD), (ii) rice straw:green gram:cow dung (RGC) and (iii) cow dung (CD) as nutrient input for Zea mays L. Digestates were applied in four application phases, i.e., whole, solid, liquid and ash from solid digestates. BEBPs provoked significant changes in soil pH, electrical conductivity, available NPK, organic carbon and micronutrients depending upon both feedstock and phase. Digestates in solid and whole phases were found better as an organic amendment, whereas RGC and ICD digestates were superior in maintaining higher soil available P and K, respectively. BEBP showed satisfactory performance compared to BEBP-untreated control in terms of crop growth and yield, but chemical treatment resulted in the highest yield. N preservation against volatilization loss may be required through appropriate timing and method of application in case of high-ammonia-N-containing ICD digestates. Outcomes of this investigation are expected to be useful to undertake selective utilization practices of BEBPs for better handling and management.
机译：在生物能源转换技术期间产生的副产品的管理对于技术可持续性至关重要，并且由于严格遵守浪费最小化立法。我们调查了四种类型的生物能源副产品（BEBPS）的潜力，即从稻壳和消化的含量，从3种类型的原料中消化：（i）IPOMOEA Carnea：牛粪（ICD），（II）稻草：绿色克：牛粪（RGC）和（III）牛粪（CD）作为ZEA Mays L的营养输入。消化以四种施用相，即来自固体消化的全部，固体，液体和灰分。根据原料和相位，Bebps引起土壤pH，导电性，可用NPK，有机碳和微量营养素的显着变化。作为有机型修正，发现固体和整个阶段的消化物质，而RGC和ICD消化物质分别在维持较高的土壤可用P和K中优异。在作物生长和产量方面，BEBP与BEBP-Untreated控制相比表现令人满意的性能，但化学处理导致最高产量。在含高氨-N-N的ICD消化的情况下，可以通过适当的时间和应用方法来保护抗挥发损失。预计这项调查结果将有助于开展BEBPS的选择性利用实践以获得更好的处理和管理。

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