使用各种填料的生物滴滤反应器高效降解乙醇、乙醛和去除乙酸乙酯

IF 5.3 2区 材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY ACS Applied Nano Materials Pub Date : 2024-09-16 DOI:10.1016/j.psep.2024.09.063
Hairong Jiang, Yue Wang, Yuling Zhang, Yixuan Yang, Ruoqi Cui, Lianhai Ren, Minglu Zhang, Yongjing Wang
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引用次数: 0

摘要

本研究调查了使用不同介质的生物滴滤(BTF)处理厨房垃圾恶臭气体中的乙醇、乙醛和乙酸乙酯的净化性能。比较的介质包括定制的复合介质、松树皮、空心多面体球和陶瓷颗粒。在 25 天的时间里,复合培养基的表现优于传统培养基,在生物膜形成阶段,乙醇的去除率达到 90.13%,乙醛的去除率达到 63.89%,乙酸乙酯的去除率达到 82.56%,其他培养基的去除率均低于 60%。即使在低空床停留时间和高入口浓度条件下,乙醇、乙醛和乙酸乙酯的最大消除能力也分别为 8.34-14.70 g/m3-h、9.55-15.06 g/m3-h 和 6.18-10.45 g/m3-h。动力学分析表明,Michaelis-Menten 模型拟合良好,表明去除潜力增强。高通量 16S rDNA 测序确定了复合培养基中的优势微生物,如肠杆菌科(13.89%)、血单胞菌(29.23%)和醋杆菌(4.09%),这些微生物即使在污染物浓度较高的情况下也能茁壮成长。主成分分析(PCA)表明,在不同的进水浓度和负荷下,定制复合培养基的微生物组成与传统培养基相比存在差异。这项研究为处理复杂的恶臭气体混合物提供了技术支持。
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Highly efficient degradation of ethanol, acetaldehyde, and ethyl acetate removal by bio-trickling filter reactors with various fillers

This study investigates the purification performance of bio-trickling filters (BTFs) using different media to treat ethanol, acetaldehyde, and ethyl acetate in kitchen waste malodorous gases. The media compared included a custom composite medium, pine bark, hollow polyhedral spheres, and ceramic particles. Over 25 days, the composite medium outperformed the traditional media, achieving removal rates of 90.13 % for ethanol, 63.89 % for acetaldehyde, and 82.56 % for ethyl acetate during the biofilm initiation phase, with the others below 60 %. Even under low empty bed residence time and high inlet concentrations, the maximum elimination capacity for ethanol, acetaldehyde, and ethyl acetate was 8.34–14.70 g/m3·h, 9.55–15.06 g/m3·h, and 6.18–10.45 g/m3·h. Kinetic analysis showed the Michaelis-Menten model fit well, indicating enhanced removal potential. High-throughput of 16S rDNA sequencing identified dominant microorganisms like Enterobacteriaceae (13.89 %), Stenotrophomonas (29.23 %), and Acinetobacter (4.09 %) in the composite medium, which thrived even at high pollutant concentrations. Principal component analysis (PCA) demonstrated differences in the microbial composition of the custom composite medium compared to traditional media under varying inlet concentrations and loads. This study provides technical support for the treatment of complex malodorous gas mixtures.

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来源期刊
CiteScore
8.30
自引率
3.40%
发文量
1601
期刊介绍: ACS Applied Nano Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics and biology relevant to applications of nanomaterials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important applications of nanomaterials.
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