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Energies
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Advancing Sustainable Development with Joint Effort of Bioenergy and Geo-Energy
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Advancing Sustainable Development with Joint Effort of Bioenergy and Geo-Energy

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "B: Energy and Environment".

Deadline for manuscript submissions: 13 June 2025 | Viewed by 994

Special Issue Editors

Dr. Guandong Su

E-Mail Website
Guest Editor
Department of Environment and Food, School of Chemical Engineering, Ocean, and Life Sciences, Dalian University of Technology, Panjin 124221, China
Interests: bioenergy with carbon capture and storage (BECCS); solid waste valorization; green and low-carbon oil and gas fields
Special Issues, Collections and Topics in MDPI journals
Dr. Yu Peng

E-Mail Website
Guest Editor
State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China
Interests: rock mechanics; heat and mass transfer; fracture mechanics; rheology; interdisciplinary application of mathematics; numerical simulations related to oil and natural gas development
Dr. Mohamed Saad Hellal

E-Mail Website
Guest Editor
Water Pollution Research Department, National Research Centre, 33 El Bohooth St., Dokki, Giza 12622, Egypt
Interests: waste management and environmental studies; biogas; biohydrogen; MBR; SBR; MBBR; EC; EOX; EIA; DAF; DHS and algal ponds

Special Issue Information

Dear Colleagues,

So-called clean energy is recommended to replace transitional fossil geo-energy towards a sustainable future. However, clean energy and fossil energy are not opposites. Instead, they are supposed to transit the current energy system toward sustainability individually and/or with the joint effort of each other.

The integration of bioenergy and geo-energy presents a transformative opportunity to advance sustainable development. Bioenergy, derived from organic materials like agricultural waste, forestry residues, and biowaste, offers a versatile and renewable energy source. Geo-energy, harnessed from the Earth, such as oil and gas and geothermal heat, provides a stable and consistent supply of energy. Together, these energy resources can complement each other to address pressing energy and climate challenges.

Bioenergy is particularly effective in utilizing waste streams, supporting the circular economy by turning biomass into power, heat, or biofuels. Geo-energy, on the other hand, offers baseload energy that is not weather-dependent, ensuring reliability. Integrating these two energy systems can lead to hybrid solutions, such as combining geothermal heat with biogas plants to maximize energy output while minimizing emissions. Such systems can significantly enhance energy efficiency, reduce reliance on fossil fuels, and improve the resilience of energy systems.

Moreover, joint bio-geo energy initiatives align with sustainable development goals (SDGs). They promote clean energy (SDG 7), support climate action (SDG 13), and foster sustainable communities (SDG 11). For instance, utilizing local biomass resources alongside geothermal energy can empower rural communities, creating jobs and improving energy access while mitigating environmental impacts.

Key challenges, however, include technology integration, cost optimization, and policy alignment. Addressing these barriers requires innovative research, interdisciplinary collaboration, and supportive policy frameworks. Governments, industries, and researchers must work together to develop scalable models that balance environmental sustainability with economic viability.

By combining the strengths of bioenergy and geo-energy, we can move closer to a low-carbon future, ensuring energy security, environmental preservation, and socio-economic development. This collaborative effort holds immense potential to transform global energy systems and achieve long-term sustainability.

We invite researchers, scientists, and practitioners to contribute original research and review articles to a Special Issue focused on the synergy between bioenergy and geo-energy for advancing sustainable development. This Issue aims to explore innovative strategies, technologies, and policies that integrate these renewable energy sources to address global energy challenges while ensuring environmental and social sustainability.

Topics of interest include, but are not limited to, the following:

  • Waste to energy.
  • Responsible and sustainable energy generation.
  • Sustainable hydrocarbon exploration and production.
  • Carbon capture, utilization and storage (CCUS).
  • Geo- and/or bio-hydrogen production, transport, and storage.
  • Geothermal energy.
  • Application of artificial intelligence, machine learning and big data analytics in energy industry.
  • Novel technologies of bioenergy, geo-energy and their integration.
  • Life cycle assessment of bio-geo energy solutions.
  • Role of bio-geo energy in achieving net-zero emissions.
  • Policies and strategies promoting bio-geo energy synergy.
  • Case studies of successful implementations.

Dr. Guandong Su
Dr. Yu Peng
Dr. Mohamed Saad Hellal
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • bioenergy
  • geo-energy
  • sustainable development goals
  • waste management
  • synergy

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (2 papers)

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Research

16 pages, 4079 KiB  
Article
The Evaluation Method and Performance Requirements of Quartz Sand for Shale Gas Fracturing
by Huan Peng, Jian Yang, Fei Liu, Xiaofang Zhang, Fulong Ning, Hanxi Peng, Zhichao Liu, Jiaxin Sun, Wan Cheng, Guodong Cui and Pengjun Shi
Energies 2025, 18(8), 1979; https://doi.org/10.3390/en18081979 - 12 Apr 2025
Viewed by 285
Abstract
In recent years, increasing the proportion of quartz sand in the hydraulic fracturing of shale gas has become one of the primary approaches to reduce development costs. However, the lack of industry standards for evaluating quartz sand specifically for shale gas hydraulic fracturing [...] Read more.
In recent years, increasing the proportion of quartz sand in the hydraulic fracturing of shale gas has become one of the primary approaches to reduce development costs. However, the lack of industry standards for evaluating quartz sand specifically for shale gas hydraulic fracturing has constrained its widespread application in this context. Therefore, based on indoor comparative experiments, statistical analysis of product indicators, and field production data of shale gas, this study experimentally analyzed the particle size, turbidity, density, crush rate, embedment depth, friction coefficient, and packing coefficient of quartz sand used in shale gas hydraulic fracturing to define performance criteria. Certain evaluation methods deviate from the practical application of shale fracturing, and it is necessary to carry out specific experimental methods and performance indicators. The results indicate that for quartz sand used in shale gas hydraulic fracturing, it is recommended to increase five particle size specifications, maintain turbidity values below 250 FTU (formazine turbidity unit), ensure visual density does not exceed 2.75 g/cm3, and limit the crush rate to below 18%, embedment depth to below 0.15, packing coefficient to below 0.8, and friction coefficient to below 0.5. This work establishes evaluation standards and performance requirements for the optimal selection of quartz sand, aiming to reduce fracturing costs and enhance production efficiency in shale gas reservoirs. Full article
(This article belongs to the Special Issue Advancing Sustainable Development with Joint Effort of Bioenergy and Geo-Energy)
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19 pages, 8309 KiB  
Article
Experimental Study on Factors Influencing the Propagation of Hydraulic Fractures in Shale Reservoirs with Developed Natural Weak Planes
by Yitao Huang, Juhui Zhu, Yongming Li, Le He, Zeben Fang and Xiyu Chen
Energies 2025, 18(5), 1100; https://doi.org/10.3390/en18051100 - 24 Feb 2025
Viewed by 325
Abstract
Hydraulic fracturing is a key technology to build productivity in shale reservoirs; however, the evolution mechanism of fractures is extremely complex, especially in reservoirs with natural weak-planes development. There is an urgent need to conduct systematic research on the influence of natural weak [...] Read more.
Hydraulic fracturing is a key technology to build productivity in shale reservoirs; however, the evolution mechanism of fractures is extremely complex, especially in reservoirs with natural weak-planes development. There is an urgent need to conduct systematic research on the influence of natural weak planes on the vertical propagation of hydraulic fractures. This article takes the deep shale gas block of Luzhou in Southern Sichuan as the research basis and conducts different conditions of true triaxial large-scale hydraulic fracturing physical simulation experiments as well as the characteristics of natural weak-plane reservoir development and reservoir geological characteristics. This study clarifies the interaction mechanism between hydraulic fractures and natural weak planes and identifies the influence of parameters such as vertical stress difference, natural fracture strength, and approach angle on the propagation path of hydraulic fractures in reservoirs with developed natural weak planes, which help us gain a deeper insight into the interaction mechanism between fracture and weak plane. This study indicates that the widely developed natural weak planes in shale reservoirs significantly affect the initiation, propagation, and final distribution of hydraulic fractures. Based on pressure response characteristics, the fracture initiation types can be categorized into two scenarios: initiation along the direction of the maximum principal stress and initiation along natural weak planes. The propagation modes of fractures can be divided into three types: propagation perpendicular to natural weak planes, propagation parallel to natural weak planes, and multi-fracture propagation. The post-pressure fracture distribution patterns can be classified into four types: through-going fractures, T-shaped fractures, compound fractures, and complex fracture networks. The absence of developed natural weak planes, high vertical stress differences, high natural weak-plane cementation strength, and large intersection angles are favorable conditions for the vertical propagation of hydraulic fractures. The research findings enrich the fundamental theory of vertical propagation of hydraulic fractures in shale reservoirs with developed natural weak planes and provide a scientific basis for the formulation and optimization of stimulation schemes for deep shale reservoirs, contributing to better stimulation effects in the Southern Sichuan shale gas block. Full article
(This article belongs to the Special Issue Advancing Sustainable Development with Joint Effort of Bioenergy and Geo-Energy)
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