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Reclamation of Acid Soils with Biomass Ashes from Pyrolytic Wood Liquefaction

机译：热解木液化与生物质灰烬的酸性土壤回收

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摘要

Fast pyrolysis bio-oil (FPBO) is a liquid biofuel obtained from lignocellulosic residues. Moreover, biomass fly ashes (FAs) containing many minerals and micronutrients are obtained in the production process. Biomass ashes can be used as a lime substitute for amelioration of acid soils by increasing pH, providing nutrients for crop development and stimulating microbial activity. However, ash application might increase N-mineralization and induce nitrate losses via leaching. The main objective of this study was to investigate the applicability of FPBO-recovered FAs as soil amendment and their effects on soil microbial processes, plant development, and to evaluate the effects on soil leaching. In a greenhouse experiment, an acidic soil was amended with 2% of FAs and sown with a regional wheat variety. After 100 days, wheat was harvested and red clover was sown to simulate crop rotation. After 250 days, the soils were analysed microbiologically and physico-chemically. While no differences in plant yields were observed, FAs addition increased several soil chemical pools as well as certain microbiological parameters. Soil pH increased from 4.8 to 7.2, electrical conductivity from 89 to 407 μS cm~(-1), and the soil available P pool from 13.6 to 81.3 μg g~(-1) soil. Further, the nitrification rate, nitrate content in the soil leachates increased upon ash addition, in particular during the clover stage of the experiment. Summarized, despite not measurable effects on the plant growth, fly ash appears to enhance chemical and biological properties of soil cropped with wheat and clover without hinting towards negative environmental side-effects.
机译：快速热解生物油（FPBO）是一种从木质纤维素残留物获得的液体生物燃料。此外，在生产过程中获得了含有许多矿物质和微量营养素的生物质飞灰（FAS）。通过增加pH值，可以使用生物质灰烬作为酸性土石的改善，从而提供作物发育和刺激微生物活性的营养素。然而，Ash应用可能会增加N-矿化，并通过浸出诱导硝酸盐损失。本研究的主要目标是调查FPBO回收的FAS作为土壤修正的适用性及其对土壤微生物过程，植物开发的影响，并评估土壤浸出的影响。在温室实验中，用2％的FAS进行酸性土壤并与区域小麦品种播种。 100天后，收获小麦并播种红色三叶草以模拟作物旋转。 250天后，土壤分析微生物学和物理化学。虽然没有观察到植物产量的差异，但FAS增加了几个土壤化学池以及某些微生物参数。土壤pH从4.8增加到7.2，从89至407μscm〜（-1）的电导率增加，土壤可用P池从13.6到81.3μggg〜（-1）土壤。此外，硝化率，硝酸盐含量在土壤渗滤液中增加，特别是在实验的三叶草阶段期间。总而言之，尽管对植物生长没有可测量的影响，但粉煤灰似乎提高了用小麦和三叶草种植土壤的化学和生物学，而不暗示负环保副作用。

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  • 来源
    《Waste and biomass valorization》 |2020年第9期|5067-5078|共12页
  • 作者

    Marina Fernandez-Delgado Juarez; Ginevra Fabiani; Thomas Mazzier; Deborah Schoenegger; Giacomo Pietramellara; Maria Gomez-Brandon; Heribert Insam;

  • 作者单位

    Institut fuer Mikrobiologie Universitaet Innsbruck Technikerstrasse 25d 6020 Innsbruck Austria;

    Institut fuer Mikrobiologie Universitaet Innsbruck Technikerstrasse 25d 6020 Innsbruck Austria Department of Agrifood Environment and Forestry Sciences and Technologies University of Florence Piazzale delle Cascine 18 50144 Florence Italy;

    Institut fuer Mikrobiologie Universitaet Innsbruck Technikerstrasse 25d 6020 Innsbruck Austria;

    Institut fuer Mikrobiologie Universitaet Innsbruck Technikerstrasse 25d 6020 Innsbruck Austria;

    Department of Agrifood Environment and Forestry Sciences and Technologies University of Florence Piazzale delle Cascine 18 50144 Florence Italy;

    Institut fuer Mikrobiologie Universitaet Innsbruck Technikerstrasse 25d 6020 Innsbruck Austria Grupo de Ecoloxia Animal (GEA) Universidade de Vigo 36310 Vigo Spain;

    Institut fuer Mikrobiologie Universitaet Innsbruck Technikerstrasse 25d 6020 Innsbruck Austria;

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  • 正文语种 eng
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  • 关键词

    Wood ash; FPBO; Agricultural soil; Nutrient leaching; Renewable energy; Ammonia oxidizers;

    机译：木灰;FPBO;农业土壤;营养浸出;再生能源;氨氧化剂;

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