柴油污染田中生长的芒草生物量的特性：重点是产量、木质纤维素和碳氢化合物

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy Pub Date : 2025-09-20 DOI:10.1016/j.biombioe.2025.108396

Hana Burdová , Diana Polanská Nebeská , Dominik Pilnaj , Sylvie Kříženecká , Josef Trögl

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引用次数: 0

摘要

芒草（Miscanthus x giganteus, Mxg）是一种第二代能源作物，具有在退化土地上种植的潜力。然而，次优土壤条件会影响生物量的产量和质量。在田间条件下，研究了柴油污染（12 g kg - 1）对生物质产量和性能的影响。一个生长季的石油烃去除率平均可达62%。令人惊讶的是，污染土壤的生物量产量（4.8 tha - 1）是未污染地块（0.9 tha - 1）的6倍。叶和茎的木质纤维素组成未受污染的影响。木质素为5.9±0.2%，纤维素为30.6±3.0%，半纤维素为32.0±1.0%。对叶子和茎中的碳氢化合物的分析显示，没有证据表明污染物从土壤或空气中转移，确定了不同的化合物组。叶片中分析的主要长链正构烷烃为天然植物表皮蜡质的成分。即正七烷（C27）、正壬烷（C29）和正三康烷（C31）为优势化合物。这些结果表明，Mxg作为柴油污染场地植物管理的合适候选者，在不影响生物质产量、质量或生物能源转化潜力的情况下具有潜力。

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Properties of miscanthus biomass grown in a field contaminated with diesel: Focus on yield, lignocellulose and hydrocarbons

Miscanthus x giganteus (Mxg) is a second-generation energy crop that exhibits potential for cultivation in degraded lands. However, the suboptimal soil conditions can affect biomass production and quality. The impact of diesel contamination (12 g kg⁻¹) on biomass yield and properties was examined under field conditions. The petroleum hydrocarbons removal rate during one growing season reached an average of 62 %. Surprisingly, the biomass yield in the contaminated soil (4.8 t ha⁻¹) was six times higher than in the uncontaminated plot (0.9 t ha⁻¹). The lignocellulose composition of leaves and stems was not altered by pollution. The values were 5.9 ± 0.2 % for lignin, 30.6 ± 3.0 % for cellulose and 32.0 ± 1.0 % for hemicelluloses. The analysis of hydrocarbons in leaves and stems showed no evidence of translocation of contaminants from soil or air, identifying the different sets of compounds. The main long-chain n-alkanes analyzed in the leaves were components of plant epicuticular waxes of natural origin. Namely, n-heptacosane (C27), n-nonacosane (C29) and n-hentriacontane (C31) were the dominant compounds. These results demonstrate the potential of Mxg as a suitable candidate for phytomanagement of diesel-contaminated sites without compromising biomass yield, quality or its potential for bioenergy conversion.

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来源期刊

Biomass & Bioenergy 工程技术-能源与燃料

CiteScore

11.50

自引率

3.30%

发文量

258

审稿时长

60 days

期刊介绍： Biomass & Bioenergy is an international journal publishing original research papers and short communications, review articles and case studies on biological resources, chemical and biological processes, and biomass products for new renewable sources of energy and materials. The scope of the journal extends to the environmental, management and economic aspects of biomass and bioenergy. Key areas covered by the journal: • Biomass: sources, energy crop production processes, genetic improvements, composition. Please note that research on these biomass subjects must be linked directly to bioenergy generation. • Biological Residues: residues/rests from agricultural production, forestry and plantations (palm, sugar etc), processing industries, and municipal sources (MSW). Papers on the use of biomass residues through innovative processes/technological novelty and/or consideration of feedstock/system sustainability (or unsustainability) are welcomed. However waste treatment processes and pollution control or mitigation which are only tangentially related to bioenergy are not in the scope of the journal, as they are more suited to publications in the environmental arena. Papers that describe conventional waste streams (ie well described in existing literature) that do not empirically address ''new'' added value from the process are not suitable for submission to the journal. • Bioenergy Processes: fermentations, thermochemical conversions, liquid and gaseous fuels, and petrochemical substitutes • Bioenergy Utilization: direct combustion, gasification, electricity production, chemical processes, and by-product remediation • Biomass and the Environment: carbon cycle, the net energy efficiency of bioenergy systems, assessment of sustainability, and biodiversity issues.