Solidified natural gas (SNG) technology for biogas/biomethane storage: Current status and future outlook

IF 16.3 1区工程技术 Q1 ENERGY & FUELS

Renewable and Sustainable Energy Reviews Pub Date : 2025-09-04 DOI:10.1016/j.rser.2025.116233

Viphada Yodpetch , Kan Jeenmuang , Chakorn Viriyakul , Santi Kulprathipanja , Pramoch Rangsunvigit

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Abstract

Biogas or biomethane is considered a promising renewable and clean energy source. Efficient storage of biomethane is essential for its widespread applications across different energy sectors. This review offers an overview of biomethane storage methods, focusing particularly on solidified natural gas (SNG) technology for biomethane or solidified biomethane (SBM). In SBM, biomethane gas is stored in the form of hydrates, with the gas enclosed within the lattice formed by water molecules, thereby forming solid hydrate crystals. This provides a safe, eco-friendly, and compact storage and transportation solution. The review investigates approaches to enhance SBM technology viability, including the use of different promoters to improve kinetics and thermodynamics during hydrate formation, both individually and in combination, as well as the effect of trace gas on the biomethane hydrate formation. Additionally, the review evaluates technology feasibility through various perspectives such as the stability of solid biomethane hydrates, the reusability of hydrate former solutions, and economic factors, ultimately contributing to the development of a sustainable global energy future.

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固态天然气（SNG）用于沼气/生物甲烷储存技术：现状与未来展望

沼气或生物甲烷被认为是一种有前途的可再生清洁能源。生物甲烷的有效储存对于其在不同能源部门的广泛应用至关重要。本文综述了生物甲烷的储存方法，重点介绍了生物甲烷的固化天然气（SNG）技术或固化生物甲烷（SBM）技术。在SBM中，生物甲烷气体以水合物的形式储存，气体被包裹在水分子形成的晶格内，从而形成固体水合物晶体。这提供了一个安全、环保、紧凑的存储和运输解决方案。本文综述了提高SBM技术可行性的方法，包括使用不同的促进剂来改善水合物形成过程中的动力学和热力学，无论是单独的还是联合的，以及微量气体对生物甲烷水合物形成的影响。此外，本文还从固体生物甲烷水合物的稳定性、水合物前溶液的可再利用性和经济因素等多个角度评估了技术的可行性，最终为可持续的全球能源未来的发展做出了贡献。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Renewable and Sustainable Energy Reviews 工程技术-能源与燃料

CiteScore

31.20

自引率

5.70%

发文量

1055

审稿时长

62 days

期刊介绍： The mission of Renewable and Sustainable Energy Reviews is to disseminate the most compelling and pertinent critical insights in renewable and sustainable energy, fostering collaboration among the research community, private sector, and policy and decision makers. The journal aims to exchange challenges, solutions, innovative concepts, and technologies, contributing to sustainable development, the transition to a low-carbon future, and the attainment of emissions targets outlined by the United Nations Framework Convention on Climate Change. Renewable and Sustainable Energy Reviews publishes a diverse range of content, including review papers, original research, case studies, and analyses of new technologies, all featuring a substantial review component such as critique, comparison, or analysis. Introducing a distinctive paper type, Expert Insights, the journal presents commissioned mini-reviews authored by field leaders, addressing topics of significant interest. Case studies undergo consideration only if they showcase the work's applicability to other regions or contribute valuable insights to the broader field of renewable and sustainable energy. Notably, a bibliographic or literature review lacking critical analysis is deemed unsuitable for publication.