金属氧化物纳米颗粒（Mn3O4, NiO， mn掺杂NiO和SnO2）对牛粪沼气和甲烷生产的比较评价

IF 7.6 Q1 ENERGY & FUELS

Energy Conversion and Management-X Pub Date : 2025-10-01 DOI:10.1016/j.ecmx.2025.101317

Jasim Uddin , Rahim Abdur , M. Shahinuzzaman , Md. Nuruzzaman Khan , Mustafizur Rahman Naim , Mohammad Shah Jamal , Mosharof Hossain

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引用次数: 0

摘要

以牛粪为原料，通过厌氧消化（AD）实验，研究了金属氧化物纳米颗粒（NPs）对沼气和甲烷（CH4）生成的影响。本研究旨在利用金属氧化物NPs提高沼气产量，并对其影响进行比较分析。合成的球形Mn3O4、NiO、mn掺杂NiO和SnO2纳米颗粒尺寸分别为58、27、26和8 nm，并将其整合到AD工艺中，以加速浆液分解并刺激产甲烷活性，从而在60天的水力滞留时间（HRT）内增加沼气和CH4的产量。在AD工艺中添加Mn3O4、NiO、mn掺杂NiO和SnO2 NPs后，沼气体积分别比对照组增加了1.47倍、1.77倍、1.76倍和1.87倍（p < 0.05）。相应地，CH4体积比对照组增加了1.61、2.00、1.97和2.15倍（p < 0.05）。值得注意的是，SnO2 NPs的效率最高，每g挥发性固体（VS）产生517.93 mL沼气，每g VS产生334.73 mL CH4，而对照每g VS产生277.53 mL沼气，每g VS产生155.73 mL CH4，与之相比，SnO2 NPs的效率最高（p < 0.05）。通过分析各处理后残渣的元素组成，证实了NPs在完成AD过程后的存在。消化后分析证实了NPs在固体残渣中的保留，强调了它们在系统中的稳定性。这些发现突出了金属氧化物NPs在优化AD和CH4生成方面的催化潜力。

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Comparative evaluation of metal oxide nanoparticles (Mn3O4, NiO, Mn-doped NiO, and SnO2) on biogas and methane production from cow dung

The impacts of metal oxide nanoparticles (NPs) on biogas and methane (CH₄) production were investigated by anaerobic digestion (AD) experiments using cow dung as the raw material. This study aims to enhance the biogas production using metal oxide NPs and a comparative analysis of their effects on it. Spherical Mn₃O₄, NiO, Mn-doped NiO, and SnO₂ NPs, with sizes of 58, 27, 26, and 8 nm, respectively, were synthesized and integrated into the AD process to accelerate slurry breakdown and stimulate methanogenic activity, leading to increased biogas and CH₄ production over a 60-day hydraulic retention time (HRT). The addition of the Mn₃O₄, NiO, Mn-doped NiO, and SnO₂ NPs to the AD process significantly increased the biogas volume by 1.47, 1.77, 1.76, and 1.87 times more than the control (p < 0.05), respectively. Correspondingly, CH₄ volume was amplified by factors of 1.61, 2.00, 1.97, and 2.15 (p < 0.05) from the control. Notably, SnO₂ NPs exhibited the highest efficacy, achieving the maximum specific biogas and CH₄ production (p < 0.05), with 517.93 mL biogas per g volatile solids (VS) and 334.73 mL CH₄ per g VS in comparison to the control, which produced only 277.53 mL biogas per g VS and 155.73 mL CH₄ per g VS. Moreover, the existence of NPs after completing the AD process was confirmed by analyzing the elemental composition of the post-residue of each treatment. Post-digestion analysis confirmed NPs retention in the solid residue, underscoring their stability within the system. These findings highlight the catalytic potential of metal oxide NPs in optimizing AD and CH₄ generation.

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来源期刊

Energy Conversion and Management-X Multiple-

CiteScore

8.80

自引率

3.20%

发文量

180

审稿时长

58 days

期刊介绍： Energy Conversion and Management: X is the open access extension of the reputable journal Energy Conversion and Management, serving as a platform for interdisciplinary research on a wide array of critical energy subjects. The journal is dedicated to publishing original contributions and in-depth technical review articles that present groundbreaking research on topics spanning energy generation, utilization, conversion, storage, transmission, conservation, management, and sustainability. The scope of Energy Conversion and Management: X encompasses various forms of energy, including mechanical, thermal, nuclear, chemical, electromagnetic, magnetic, and electric energy. It addresses all known energy resources, highlighting both conventional sources like fossil fuels and nuclear power, as well as renewable resources such as solar, biomass, hydro, wind, geothermal, and ocean energy.