Research progress on the application of micro/nano bubbles in anaerobic digestion

doi:10.16085/j.issn.1000-6613.2022-1762

Chemical Industry and Engineering Progress ›› 2023, Vol. 42 ›› Issue (8): 4414-4423.DOI: 10.16085/j.issn.1000-6613.2022-1762

• Resources and environmental engineering • Previous Articles Next Articles

Research progress on the application of micro/nano bubbles in anaerobic digestion

XI Yonglan¹^,²^,³^,⁴(), WANG Chengcheng¹^,², YE Xiaomei²^,³(), LIU Yang¹^,², JIA Zhaoyan¹^,², CAO Chunhui¹^,², HAN Ting²^,³^,⁴, ZHANG Yingpeng²^,³^,⁴, TIAN Yu⁵

^1.School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
^2.Jiangsu Academy of Agriculture Sciences, Nanjing 210014, Jiangsu, China
^3.Key Laboratory of Crop and Livestock Integration, Ministry of Agriculture and Rural Affairs, Nanjing 210014, Jiangsu, China
^4.East China Scientific Observing and Experimental Station of Development and Utilization of Rural Renewable Energy, Ministry of Agriculture and Rural Affairs, Nanjing 210014, Jiangsu, China
^5.Nanjing Weigang Dairy Co. , Ltd. , Nanjing 210014, Jiangsu, China

Received:2022-09-21 Revised:2022-11-09 Online:2023-09-19 Published:2023-08-15
Contact: YE Xiaomei

微纳米气泡在厌氧消化中的应用研究进展

奚永兰¹^,²^,³^,⁴(), 王成成¹^,², 叶小梅²^,³(), 刘洋¹^,², 贾昭炎¹^,², 曹春晖¹^,², 韩挺²^,³^,⁴, 张应鹏²^,³^,⁴, 田雨⁵

^1.江苏大学农业工程学院，江苏镇江 212013
^2.江苏省农业科学院，江苏南京 210014
^3.农业农村部种养结合重点实验室，江苏南京 210014
^4.农业农村部农村可再生能源华东科学观测实验站，江苏南京 210014
^5.南京卫岗乳业有限公司，江苏南京 210014

通讯作者: 叶小梅
作者简介:奚永兰（1986—），女，副研究员，硕士生导师，研究方向为农业废弃物资源化利用。E-mail：yonglanxi@jaas.ac.cn。
基金资助:
江苏省农业科技自主创新项目(CX(22)3198);江苏现代农业产业技术体系建设专项(JATS[2022]439);江苏省自然科学基金(BK20201242)

Abstract

Abstract:

Research on micro/nano bubbles (MNBs) have attracted much attention due to their wide application fields and good application prospects. In the field of anaerobic digestion (AD), the high gas transfer efficiency, ROS generation, high zeta potential, high surface charge, and inherent micro-aeration capability (air or O₂-MNBs) of MNBs can improve the performance of AD processes, improving the rate-limiting steps (hydrolysis and methanogenesis), which provide new directions for the improvement of AD processes. In recent years, more and more studies have used different MNBs in AD in different ways. These studies mainly focus on using nanobubble-rich nanobubble water to improve AD reactor performance, while the research on the application of microbubbles in AD is relatively small. Considering that both nanobubbles and microbubbles have the potential to improve AD, this study reviewed the characteristics, preparation methods and equipment of MNBs, as well as their research status and possible mechanism in AD, and discussed possible future application directions, which aims to provide a reference for further research on using MNBs to enhance AD.

Key words: micro/nano bubbles, anaerobic digestion, organic waste, micro aeration, methane

摘要：

微纳米气泡（micro/nano bubbles，MNBs）因其广泛的应用领域及良好的应用前景而备受关注。在厌氧消化（AD）领域，MNBs具备的高气体转移效率、产生ROS、高zeta电位、高表面电荷以及固有的微曝气能力（空气或O₂-MNBs）等特性，可以提高AD过程的性能和效率，改善限速步骤（水解和产甲烷），这为AD工艺的改进提供了新的方向。近年来，越来越多的研究将不同MNBs以不同方式用于AD中，这些研究主要集中于利用富有纳米气泡的纳米气泡水来提高AD反应器性能，而有关微气泡在AD中的应用研究相对较少。考虑到纳米气泡和微气泡都拥有改善AD的潜能，本文从MNBs的特性、制备方法和设备、其在AD中的研究现状和可能的作用机理方面开展综述，并探讨了未来可能的应用方向，旨在为进一步利用MNBs增强AD的研究提供参考。

关键词: 微纳米气泡, 厌氧消化, 有机废弃物, 微曝气, 甲烷

CLC Number:

XI Yonglan, WANG Chengcheng, YE Xiaomei, LIU Yang, JIA Zhaoyan, CAO Chunhui, HAN Ting, ZHANG Yingpeng, TIAN Yu. Research progress on the application of micro/nano bubbles in anaerobic digestion[J]. Chemical Industry and Engineering Progress, 2023, 42(8): 4414-4423.

奚永兰, 王成成, 叶小梅, 刘洋, 贾昭炎, 曹春晖, 韩挺, 张应鹏, 田雨. 微纳米气泡在厌氧消化中的应用研究进展[J]. 化工进展, 2023, 42(8): 4414-4423.

Figures/Tables 4

气泡类型	尺寸	比表面积	水中停留时间长	传质效率
宏观气泡	>100μm	小	快速上升	传质效率低
微气泡	1~100μm	较大	上升缓慢（停留几分钟）	较高传质效率
纳米气泡	<1μm	大	上升最慢（停留数天）	高传质效率

$戊酸 + H + + 6.5 O 2 ̿ 5 C O 2 + 5 H 2 O$

$丁酸 + H + + 5 O 2 ̿ 4 C O 2 + 4 H 2 O$

$丙酸 + H + + 3.5 O 2 ̿ 3 C O 2 + 3 H 2 O$

$醋酸 + H + + 2 O 2 ̿ 2 C O 2 + 2 H 2 O$

-2773.6

-2133.8

-1493.8

-853.9

[55]

H₂或CO₂

$4 H 2 + C O 2 → C H 4 + 2 H 2 O$

$2 C O 2 + 4 H 2 → C H 3 C O O - + H + + 2 H 2 O$

-135.6

-95

[57]

气体类型

反应式

ΔG^Ө′/kJ·mol^-1

参考文献

空气或O₂

$戊酸 + H + + 6.5 O 2 ̿ 5 C O 2 + 5 H 2 O$

$丁酸 + H + + 5 O 2 ̿ 4 C O 2 + 4 H 2 O$

$丙酸 + H + + 3.5 O 2 ̿ 3 C O 2 + 3 H 2 O$

$醋酸 + H + + 2 O 2 ̿ 2 C O 2 + 2 H 2 O$

-2773.6

-2133.8

-1493.8

-853.9

[55]

H₂或CO₂

$4 H 2 + C O 2 → C H 4 + 2 H 2 O$

$2 C O 2 + 4 H 2 → C H 3 C O O - + H + + 2 H 2 O$

-135.6

-95

[57]

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Research progress on the application of micro/nano bubbles in anaerobic digestion

微纳米气泡在厌氧消化中的应用研究进展

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