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Community Development Planning : Introduction Of Integrated Farming System (Ifs) To The Rural Community, Yanu Prasetyo, M Mauludin Jan 2026

Community Development Planning : Introduction Of Integrated Farming System (Ifs) To The Rural Community, Yanu Prasetyo, M Mauludin

Jurnal Ilmu Ternak Universitas Padjadjaran

Development Center for Appropriate Technology (DCAT) is a research institute that has a role to develop and implement Appropriate Technology (AT) in accordance with the needs of rural communities in Indonesia. In practice, the application of AT can not be carried out in the

scheme of top-down intervention, but rather requires a participatory community development

methods. Rural livelihoods, especially in the peasant community, have complex issues, ranging from land tenure, the means of production, waste pollution and management, production capacity, degradation of land, water …


Biokonversi Limbah Kulit Ubi Kayu Menjadi Pakan Unggas Sumber Energi Menggunakan Bacillus Amyloliquefaciens (Bioconverstion Of Cassava Feel Become Poultry Feed Energy Sources Using Bacillus Amyloliquefaciens), Mirzah, Helmi Muis Jan 2026

Biokonversi Limbah Kulit Ubi Kayu Menjadi Pakan Unggas Sumber Energi Menggunakan Bacillus Amyloliquefaciens (Bioconverstion Of Cassava Feel Become Poultry Feed Energy Sources Using Bacillus Amyloliquefaciens), Mirzah, Helmi Muis

Jurnal Ilmu Ternak Universitas Padjadjaran

Penelitian dilakukan dengan tujuan untuk mengetahui pengaruh interaksi antara dosis

inokulum dengan lama fermentasi kulit singkong merasa menggunakan bakteri Bacillus amyloliquefaciens untuk mengubah kandungan zat dan kualitas gizi produk tape singkong (FCFP).

Penelitian dilakukan dengan metode eksperimen menggunakan pola Rancangan Acak Lengkap faktorial 3 x 3 dengan 3 ulangan. Faktor pertama adalah dosis inokulum dari amyloliquefaciens bakteri Bacillus terdiri dari A1 = 1%, A2 = 2% dan A3 = 3% per 100 g substrat. Faktor kedua adalah waktu fermentasi terdiri dari B1 = 4 hari, B2 = 6 hari dan B3 = 8 hari. Parameter yang diamati adalah perubahan isi …


Evaluasi In Vitro Penggunaan Daun Teh Dalam Ransum Domba Lokal (In Vitro Evaluation Of Adding Tea Leaves Into A Diet Of Local Sheep), Diky Ramdani, Husmy Yurmiati, Endang Yuni Setyowati Jan 2026

Evaluasi In Vitro Penggunaan Daun Teh Dalam Ransum Domba Lokal (In Vitro Evaluation Of Adding Tea Leaves Into A Diet Of Local Sheep), Diky Ramdani, Husmy Yurmiati, Endang Yuni Setyowati

Jurnal Ilmu Ternak Universitas Padjadjaran

adalah kecernaan bahan kering (BKcBK), kecernaan bahan organik (KcBO), produksi ammonia

(N-NH3), dan total volatile fatty acids (tVFA). KcBK, N-NH3, dan tVFA tertinggi diperoleh dari ransum T2, T4, dan T6 secara berurutan. Pemberian T2 dan T3 meningkatkan KcBK dan N- NH3.Tetapi pemberian T2 tidak berpengaruh nyata terhadap tVFA, sedangan pemberian T3 dapat menurunkan tVFA.Pemberian T5 meningkatkan N-NH3 dan tVFA tetapi menurunkan KcBK. Sedangkan pemberian T6 tidak berpengaruh nyata terhadap KcBK tetapi menurunkan N -NH3 dan meningkatkan tVFA.

Kata kunci: in vitro, daun teh, ransum, dan domba lokal


Perubahan Kadar Kalsium, Fosfor, Dan Kalium Biji Asam Yang Diperam Dengan Nira Lontar Pada Level Yang Berbeda (Changing On The Level Of Calcium, Phosphorus, And Potassium Of The Fermented Tamarind Seeds Using Different Levels Of Palm Sap), Maria Wunu, Johanis Jermias, Bernadete Barek Koten, Redempta Wea Jan 2026

Perubahan Kadar Kalsium, Fosfor, Dan Kalium Biji Asam Yang Diperam Dengan Nira Lontar Pada Level Yang Berbeda (Changing On The Level Of Calcium, Phosphorus, And Potassium Of The Fermented Tamarind Seeds Using Different Levels Of Palm Sap), Maria Wunu, Johanis Jermias, Bernadete Barek Koten, Redempta Wea

Jurnal Ilmu Ternak Universitas Padjadjaran

Penelitian yang bertujuan untuk mengetahui perubahan kadar kalsium (Ca), fosfor (P), dan

Kalium (K) biji asam berkulit yang diperam dengan nira lontar pada level yang berbeda serta mengetahui level penggunaan nira lontar yang terbaik telah dilaksanakan selama enam bulan mulai

dari Agustus 2015- Februari 2016 di Unit Pelaksana Teknis Produksi Oesao dan Laboratorium Umum

Politeknik Pertanian Negeri Kupang. Analisis mineral di Laboratorium Kimia Makanan Ternak

Jurusan Nutrisi dan Makanan Ternak Fakultas Peternakan Universitas Hasanuddin Makassar.

Penelitian ini dilakukan dengan menggunakan rancangan acak lengkap dengan 4 perlakuan dan 5

Kata Kunci : pemeraman biji asam, nira lontar, kadar kalsium, kadar fosfor, …


Respon Itik Cihateup Dan Itik Rambon Jantan Terhadap Imbangan Energi-Protein Ransum Pada Sistem Pemeliharaan Minim Air (Response Of Cihateup And Rambon Male Ducks On Energy-Protein Ratio In The Diet Under Restricted Water Raising System), Siti Wahyuni H.S., Abun, Endang Sujana Jan 2026

Respon Itik Cihateup Dan Itik Rambon Jantan Terhadap Imbangan Energi-Protein Ransum Pada Sistem Pemeliharaan Minim Air (Response Of Cihateup And Rambon Male Ducks On Energy-Protein Ratio In The Diet Under Restricted Water Raising System), Siti Wahyuni H.S., Abun, Endang Sujana

Jurnal Ilmu Ternak Universitas Padjadjaran

Tujuan penelitian eksperimental ini adalah mempelajari imbangan energi- protein dalam ransum yang dapat menghasilkan performa maksimal pada itik Cihateup dan Itik Rambon jantan yang dipelihara secara intensif pada kondisi minim air. Itik dipelihara sejak umur sehari sampai

dengan mencapai titik infleksi. Perlakuan berupa enam ransum pada imbangan energi-protein

berbeda, terdiri atas R1 ( ME 3000 kkal/kg, protein 20 %); R2 (ME 300 kkal/kg, protein 16 %); R3 (ME 3000 kkal/kg, protein 13,5 %); R4 ( ME 2700 kkal/kg, protein 20 %); R5 (ME 2700 kkal/kg, protein 16 %); R6 (ME 2700 kkal/kg, protein 13,5 %). Setiap perlakuan diulang empat kali, …


Evolutionary Mechanisms Of Nanopores And Adsorption Capacity In Shales Under Scco2-Water-Rock Interactions, Feng Guangjun, Wang Meng, Zhu Yanming, Song Yu, Dai Xuguang, Zheng Sijian, Xie Hong, Shang Fuhua Jan 2026

Evolutionary Mechanisms Of Nanopores And Adsorption Capacity In Shales Under Scco2-Water-Rock Interactions, Feng Guangjun, Wang Meng, Zhu Yanming, Song Yu, Dai Xuguang, Zheng Sijian, Xie Hong, Shang Fuhua

Coal Geology & Exploration

Background Supercritical carbon dioxide (ScCO2 )-enhanced shale oil and gas recovery serves as an effective approach to geologic CO2 sequestration. Injecting ScCO2 into shale reservoirs can trigger complex ScCO2-water-rock interactions, thereby altering the material composition, nanopore structure, and adsorption capacity of shales. Examining their evolutionary processes represents a critical scientific issue in the evaluation of CO2 sequestration efficiency. Methods This study investigated the shales of the Longmaxi Formation in the southeastern Chongqing area. Through simulation experiments on ScCO2-water-rock interactions and by integrating X-ray diffraction (XRD), low-pressure CO2/N2 adsorption, fractal …


Advances In Research On Co2 Corrosion Mechanisms, Modification, And Application Of Cements For Injection Wells In Geologic Co2 Sequestration, Hao Feng, Zhang Zongfeng, Wang Hongmin, Du Shuai, Huang Da, Yang Xuefeng, Wang Kexin, Zhang Yu Jan 2026

Advances In Research On Co2 Corrosion Mechanisms, Modification, And Application Of Cements For Injection Wells In Geologic Co2 Sequestration, Hao Feng, Zhang Zongfeng, Wang Hongmin, Du Shuai, Huang Da, Yang Xuefeng, Wang Kexin, Zhang Yu

Coal Geology & Exploration

Background and Merhod The wellbore integrity of CO2 injection wells plays a critical role in maintaining the long-term safe operation of geologic CO2 sequestration (GCS) projects. Well cement serves as the foremost wellbore integrity barrier, and its durability under GCS has emerged as a hot research topic both at home and abroad. This study systematically reviews the advances in research on the chemical corrosion mechanism of well cement under the operating conditions of GCS, technologies for cement modification for enhanced resistance to CO2 corrosion, and non-Portland cement systems. Furthermore, the directions for the future development of well …


Numerical Simulations Of The Safety Of Geologic Co2 Storage In Saline Aquifers In The Enping Sag, Pearl River Mouth Basin, Yu Tao, Li Xiwen, Yang Yunshi, Chen Bingbing, Ji Zemin, He Chang, Jiang Lanlan, Song Yongchen Jan 2026

Numerical Simulations Of The Safety Of Geologic Co2 Storage In Saline Aquifers In The Enping Sag, Pearl River Mouth Basin, Yu Tao, Li Xiwen, Yang Yunshi, Chen Bingbing, Ji Zemin, He Chang, Jiang Lanlan, Song Yongchen

Coal Geology & Exploration

Background Since the beginning of the Industrial Revolution, excessive CO2 emissions have aggravated the greenhouse effect. Against this backdrop, CO2 capture, utilization, and storage (CCUS) technology has emerged as a critical countermeasure. Particularly, geologic CO2 storage holds enormous application potential. China has implemented a demonstration project of geologic CO2 storage in saline aquifers located in the Enping Sag, Pearl River Mouth Basin. Nevertheless, this sag exhibits formation dip angles and widely distributed fracture zones, which affect CO2 migration and storage. Methods Focusing on the Enping Sag, this study established a two-dimensional model of the saline …


Research Progress And Prospects Of Full Flowsheet Coal-Based Ccus, Sang Shuxun, Liu Shiqi, Zheng Sijian, Huang Fansheng, Liu Tong, Chen Siming, Zhou Xiaozhi, Han Sijie, Tian Yuchen, Xiang Wenxin, Bai Yansong Jan 2026

Research Progress And Prospects Of Full Flowsheet Coal-Based Ccus, Sang Shuxun, Liu Shiqi, Zheng Sijian, Huang Fansheng, Liu Tong, Chen Siming, Zhou Xiaozhi, Han Sijie, Tian Yuchen, Xiang Wenxin, Bai Yansong

Coal Geology & Exploration

Background The engineering-oriented, full flowsheet coal-based carbon capture, utilization, and storage (CCUS) technology is the key to efficient, clean coal utilization and carbon emission reduction. It represents a major technology that is urgently needed to ensure the energy security of China and achieve the strategic goals of peak carbon dioxide emissions and carbon neutrality of the country. Based on previous research efforts of the authors’ team, this study reviews the current status of this technology, reveals its integration mechanisms, and attempts to establish a pattern and scheme for CCUS cluster deployment in coal energy bases. Furthermore, it discusses the future …


An Experimental Study On Nonlinear Seepage Characteristics In Coal Seams During Ch4 Displacement Through N2 And Co2 Flooding, Li Zefeng, Huang Mengru, Zhang Hongzhong, Lan Jianping, Song Jinsuo, Fan Shixing Jan 2026

An Experimental Study On Nonlinear Seepage Characteristics In Coal Seams During Ch4 Displacement Through N2 And Co2 Flooding, Li Zefeng, Huang Mengru, Zhang Hongzhong, Lan Jianping, Song Jinsuo, Fan Shixing

Coal Geology & Exploration

Background Coal seams in China are generally characterized by low porosity (<5%) and low permeability (0.001×10–3μm2), leading to low coalbed methane (CBM, dominated by CH4) drainage efficiency. Gas flooding-enhanced CBM drainage technology plays a significant role in surface CBM drainage, underground CBM pre-drainage, and deep geologic CO2 storage. Methods This study investigated four common types of gases: N2 and CO2 for flooding, CH4 to be displaced, and He for blank control. Based on the physical properties of these gases and employing methods including the quasi-static method, the gas flow rate method, and the Reynolds …


Dominion Or Destruction: Rereading Genesis In An Age Of Melting Ice, Benjamin Nunes Jan 2026

Dominion Or Destruction: Rereading Genesis In An Age Of Melting Ice, Benjamin Nunes

Consensus

This essay was written for the course “TH530A-A: God and Theological Reflection,” taught by Mary (Joy) Philip at Martin Luther University College, Fall 2025.


The Earth Charter, The Advent, And The Divine Right Of Elon Musk, Joseph Kirby Jan 2026

The Earth Charter, The Advent, And The Divine Right Of Elon Musk, Joseph Kirby

Consensus

No abstract provided.


Agentic Intelligence Under Constraint: Energy, Context, And The Expansion Of Exchange, Nick Loghmani Jan 2026

Agentic Intelligence Under Constraint: Energy, Context, And The Expansion Of Exchange, Nick Loghmani

iSchool - All Scholarship

Recent advances in agentic artificial intelligence have been driven primarily by scale: larger models, increased data, and expanding computational resources. However, rising energy costs, inference latency, and hardware constraints increasingly challenge this trajectory. This paper argues that intelligence—biological or artificial—does not primarily scale through raw computational expansion, but through the management of exchange under constraint. Drawing on cognitive science, systems theory, and prior work on exchange-based models of intelligence, the paper proposes a theoretical framework in which agentic intelligence scales through context management, proceduralization, and the assembly of reusable units of exchange. Unlike approaches that focus solely on model compression …


Research And Application Of A Decision Support Platform For Geologic Co2 Storage Siting Based On A Global Case Database, Zhou Yinbang, Wang Rui, Zhen Yan, Dai Quanqi, Cheng Chuanjie Jan 2026

Research And Application Of A Decision Support Platform For Geologic Co2 Storage Siting Based On A Global Case Database, Zhou Yinbang, Wang Rui, Zhen Yan, Dai Quanqi, Cheng Chuanjie

Coal Geology & Exploration

Objective Under the strategic background of reaching the goals of peak CO2 emissions and carbon neutrality, there is an urgent need to address the core issue of geologic CO2 storage (GCS) siting in the advancement of large-scale GCS deployment. Establishing a decision support platform based on a global GCS case database can provide key data and historical experience references for GCS siting, reduce storage risks and costs, and accelerate industrial layout. Furthermore, the platform can offer a scientific basis for formulating related policies and conducting technological R&D.Methods This study proposed and developed a comprehensive evaluation system for …


Nutrition Assistance Programs And Pediatric Weight Outcomes: A Systematic Review, Dan Ferris, Genevieve Davison, Tyler Frank, Amanda Gilbert, Fanice Thomas, Sydney Rothman, Kim Lipsey, Sarah Moreland-Russell Jan 2026

Nutrition Assistance Programs And Pediatric Weight Outcomes: A Systematic Review, Dan Ferris, Genevieve Davison, Tyler Frank, Amanda Gilbert, Fanice Thomas, Sydney Rothman, Kim Lipsey, Sarah Moreland-Russell

2020-Current year OA Pubs

BACKGROUND/OBJECTIVES: Food insecurity and pediatric obesity have increased concurrently in the U.S., raising questions about the role of Federal Nutrition Assistance Programs (FNAPs) in shaping weight outcomes. This systematic review examined evidence on relationships between FNAP participation and pediatric weight outcomes.

METHODS: Six databases were searched for U.S.-based, peer-reviewed studies published through July 2024 that assessed FNAP participation and pediatric weight outcomes.

RESULTS: Seventy-five studies met the inclusion criteria, and no consistent pattern indicated that any single FNAP or program type (educational setting-based or direct financial support) reliably reduced or increased childhood overweight or obesity risk. Twenty studies found statistically …


The Earth Charter As Green Fire, Mary (Joy) Philip Jan 2026

The Earth Charter As Green Fire, Mary (Joy) Philip

Consensus

No abstract provided.


Wounds That Mend: Rebecca Belmore’S Fringe And The Healing Of The Earth And Body, Muznah Moiz Jan 2026

Wounds That Mend: Rebecca Belmore’S Fringe And The Healing Of The Earth And Body, Muznah Moiz

Consensus

This essay was written for the course “TH530A-A: God and Theological Reflection,” taught by Mary (Joy) Philip at Martin Luther University College, Fall 2025.


Embracing The Earth: Reconnecting With Nature Through Spirituality, Art, And Climate Justice, Mais Haj-Ayoub Jan 2026

Embracing The Earth: Reconnecting With Nature Through Spirituality, Art, And Climate Justice, Mais Haj-Ayoub

Consensus

This essay was written for the course “TH530A-A: God and Theological Reflection,” taught by Mary (Joy) Philip at Martin Luther University College, Fall 2025.


Carbon Sequestration Technology: Challenges And Urgent Critical Scientific Issues, Li Xiaochun, Liu Tianyu, Zhang Liwei, Zhou Hong, Liu Guizhen, Wang Yan, Gan Manguang, Li Qi Jan 2026

Carbon Sequestration Technology: Challenges And Urgent Critical Scientific Issues, Li Xiaochun, Liu Tianyu, Zhang Liwei, Zhou Hong, Liu Guizhen, Wang Yan, Gan Manguang, Li Qi

Coal Geology & Exploration

Objective Carbon sequestration technology represents a core approach to achieving carbon neutrality. However, its large-scale application remains constrained by multiple technical and scientific challenges. Methods Based on an analysis of existing carbon sequestration projects, this study identified four major challenges in carbon sequestration: (1) high uncertainty in the assessment of CO2 sequestration capacity; (2) low injectivity of low-permeability discontinuous reservoirs; (3) a limited understanding of long-term mechanical stability; and (4) significant difficulty in assessing the risks of CO2 leakage. Results To address these challenges, this study proposes the common issues currently faced by carbon sequestration technology, and, accordingly, …


Designation And Classification Of Co2 Storage Technologies, Ma Fubo, Yang Xuechao, Zhou Zhengwu, Liu Hongliang, Chang Jia, Yi Jiayao, Wang Yan Jan 2026

Designation And Classification Of Co2 Storage Technologies, Ma Fubo, Yang Xuechao, Zhou Zhengwu, Liu Hongliang, Chang Jia, Yi Jiayao, Wang Yan

Coal Geology & Exploration

Objective and Method Currently, there remains a lack of criteria for technical certification, designation, and classification of carbon dioxide (CO2) storage technologies due to their cross-disciplinary nature and ambiguous scopes. To address this issue, this study proposes technical certification criteria and designation principles, as well as analyzes four types of common CO2 storage technologies: geologic storage, underground space storage, ocean water storage, and utilization and storage. Accordingly, a classification philosophy and scheme for these technologies is determined.Results and Conclusions In terms for technical certification criteria, a CO2 storage technology has to meet four criteria: (1) …


An Improved Model Of Trans-Critical Ch4 And Co2 Adsorption In Coals Based On Monolayer Adsorption And Adsorption Potential Theories, Song Xuemei, Zhang Kun, Sang Shuxun, Ma Mengya, Liu Huihu, Xu Hongjie Jan 2026

An Improved Model Of Trans-Critical Ch4 And Co2 Adsorption In Coals Based On Monolayer Adsorption And Adsorption Potential Theories, Song Xuemei, Zhang Kun, Sang Shuxun, Ma Mengya, Liu Huihu, Xu Hongjie

Coal Geology & Exploration

Objective and Method Adsorbed phase density represents a key parameter for determining gas adsorption capacity in coals. Using bituminous coal samples from the Huainan and Huaibei mining areas in Anhui Province, this study carried out high-pressure isothermal adsorption experiments of CO2 and CH4 at temperatures of 24 ℃, 36 ℃, and 48 ℃. In combination with the quantitative characterization of pore structures in coals using low-temperature liquid nitrogen adsorption (LNA) experiments and mercury intrusion porosimetry (MIP), this study analyzed the high-pressure trans-critical CH4 and CO2 adsorption processes in coals. Meanwhile, based on the Gibbs excess adsorption, …


Research Advances And Prospects Of Geologic Co2 Sequestration Models, Hu Chenlin, Dong Cheng, Sang Shuxun, Tang Yong, Li Xin, Zhang Bin, Zhao Lingfeng Jan 2026

Research Advances And Prospects Of Geologic Co2 Sequestration Models, Hu Chenlin, Dong Cheng, Sang Shuxun, Tang Yong, Li Xin, Zhang Bin, Zhao Lingfeng

Coal Geology & Exploration

Background The urgent need to respond to global climate change and to achieve carbon neutrality is driving geologic CO2 sequestration technology to be increasingly large-scale, safe, and intelligent. Since the CO2 sequestration process involves multi-physical field coupling, the engineering feasibility and long-term safety of CO2 sequestration heavily rely on the capacity of numerical models to perform accurate characterization of complex subsurface processes. Therefore, establishing a model system, covering the entire process consisting of injection, migration, sequestration, and monitoring, that is suitable for various geobodies for CO2 sequestration has emerged as a foundation for the engineering application …


Distribution Characteristics And Mechanisms Of Ch4 And Co2 Adsorption In Montmorillonite Nanopores In Water-Bearing And Saline Environments, Du Kai, Rui Zhenhua, Qian Cheng, Chen Siwei Jan 2026

Distribution Characteristics And Mechanisms Of Ch4 And Co2 Adsorption In Montmorillonite Nanopores In Water-Bearing And Saline Environments, Du Kai, Rui Zhenhua, Qian Cheng, Chen Siwei

Coal Geology & Exploration

Background Carbon capture, utilization, and storage (CCUS) has emerged as a significant way to reduce greenhouse gas emissions under the guidance of the strategic goals of peak carbon dioxide emissions and carbon neutrality. With the continuous exploitation of unconventional hydrocarbon resources such as shale oil and gas, varying water-bearing and salinity conditions exert significant impacts on the occurrence stability and seepage behavior of CO2, thereby reducing the efficiency and safety of CO2 storage. Therefore, a thorough understanding of the competitive behavior and distribution patterns of CO2 and other gases in shale nanopores under varying water-bearing and …


Multi-Scale Source-Sink Matching And Transportation Route Optimization For Geologic Co2 Sequestration Of Industrial Co2 Stationary Sources In Jiangsu Province, Tian Yuchen, Liu Shiqi, Zhang Helong, Mo Hang, Wang Dexi, Sang Shuxun, Wang Jun, Wang Wenkai, Zheng Sijian Jan 2026

Multi-Scale Source-Sink Matching And Transportation Route Optimization For Geologic Co2 Sequestration Of Industrial Co2 Stationary Sources In Jiangsu Province, Tian Yuchen, Liu Shiqi, Zhang Helong, Mo Hang, Wang Dexi, Sang Shuxun, Wang Jun, Wang Wenkai, Zheng Sijian

Coal Geology & Exploration

Objective CO2 stationary sources tend to show a dispersed distribution, while carbon sinks are concentrated in specific sedimentary basins. The resulting significant source-sink mismatch in space restricts the large-scale applications of carbon capture, utilization, and storage (CCUS) technology. Therefore, reducing CCUS costs by investigating source-sink matching and optimizing CO2 transportation routes under a multi-scale spatial framework is the key to the engineering applications of CCUS. Methods Targeting representative industrial CO2 stationary sources and carbon sinks in Jiangsu Province, this study established source-sink matching models on multiple scales covering hydrocarbon reservoirs, sags, and basins. Based on both the …


Reaction Mechanisms During Co2 Absorption In Ethanolamine Solutions, Teng Weiwei, Wu Yan, Fan Yuxin, Liao Tao, Wang Zicheng, Yu Hui, Li Meng, Xu Xiaoling Jan 2026

Reaction Mechanisms During Co2 Absorption In Ethanolamine Solutions, Teng Weiwei, Wu Yan, Fan Yuxin, Liao Tao, Wang Zicheng, Yu Hui, Li Meng, Xu Xiaoling

Coal Geology & Exploration

Objective Presently, CO2 capture technology based on the ethanolamine solutions suffers from drawbacks such as high energy consumption and elevated costs. A primary method to address these challenges is to construct blended amine solutions by synergistically integrating the absorption and desorption advantages of different types of ethanolamines. Hydroxyethyl ethylenediamine (AEEA) and N-methyldiethanolamine (MDEA) represent two major commonly used absorbents, and their blending necessitates an accurate understanding of their CO2 absorption patterns, including CO2 loading capacity, the ion-concentration distribution patterns of reaction products, and reaction orders. Currently, their absorption mechanisms remain poorly understood, and there is a lack …


Concept Of Cccus Technology For Co2 Recycling In Deep Unmineable Coal Seams, Liang Weiguo, Yan Jiwei, Zhu Dijie, Guo Hongguang, Gong Li, Niu Dong Jan 2026

Concept Of Cccus Technology For Co2 Recycling In Deep Unmineable Coal Seams, Liang Weiguo, Yan Jiwei, Zhu Dijie, Guo Hongguang, Gong Li, Niu Dong

Coal Geology & Exploration

Background China possesses substantial resources of deep unmineable coal seams, which hold considerable potential for CO2 sequestration. However, simply sequestrating CO2 in deep coal seams incurs high economic costs while also wasting deep coal resources. The microbial conversion of sequestrated CO2 into methane (CH4) enables circular carbon capture, utilization, and storage (CCCUS), which is of great significance for the sustainable development of both resources and the environment.Methods Using a range of methods, including experimental study, theoretical analysis, and engineering simulations, CCCUS in deep unmineable coal seams is designed to (1) reveal the mechanisms behind …


A Method Of Carbon Emission Accounting And Pathways Of Emission Reduction Through Reduction Through Ccus For Underground Coal Mines, Xu Shen, Wang Meng, Dai Xuguang, Qiu Yuxin, Tuo Jialong, Li Wenhao, Gao Jie Jan 2026

A Method Of Carbon Emission Accounting And Pathways Of Emission Reduction Through Reduction Through Ccus For Underground Coal Mines, Xu Shen, Wang Meng, Dai Xuguang, Qiu Yuxin, Tuo Jialong, Li Wenhao, Gao Jie

Coal Geology & Exploration

Objective Coal production and utilization lead to substantial carbon emissions, and the carbon emissions from underground coal mines have attracted increasing attention. However, research on emission reduction pathways in coal mines remains nascent. Methods The Y Coal Mine was investigated in this study. Using methods including life cycle assessment (LCA), emission factor approach, and monitoring, this study identified the boundaries for carbon emission accounting and determined the sources, total amount, and characteristics of carbon emissions from the coal mine. Furthermore, a framework of carbon emission reduction through CCUS was established based on the principle of carbon capture, utilization, and storage …


Performance And Carbonation Mechanisms Of Multi-Source Solid Waste-Based Carbon-Sequestering Backfill Materials For Coal Mines, Guo Qingwen, Li Dongyin, Wang Shen, Liu Songhui, Li Quanjiang, Li Song Jan 2026

Performance And Carbonation Mechanisms Of Multi-Source Solid Waste-Based Carbon-Sequestering Backfill Materials For Coal Mines, Guo Qingwen, Li Dongyin, Wang Shen, Liu Songhui, Li Quanjiang, Li Song

Coal Geology & Exploration

Objective The reutilization of solid waste such as coal gangue and steel slag is critical to green mining. Preparing solid waste-based carbon-sequestering backfill materials and then filling them into coal mine goaves emerge as an important approach to solid waste utilization, carbon emission reduction, and green coal mining.Methods Based on the designed mix proportions of a high-solid-waste system consisting of steel slag and coal gangue, in which steel slag was used to compensate for the insufficient carbonation reactivity of coal gangue, this study prepared solid waste-based backfill material samples composed of coal gangue, steel slag, and cement. Through mechanical …


Huff-N-Puff Experiments Of Mixed Co2 And Formation Water For Enhanced Oil Recovery Of Shale Oil In The Subei Basin, Xiao Pufu, Zhang Jie, Yang Zhengmao, Wang Rui, Cui Maolei, Lei Mengmeng, Tian Yunfei, Zeng Jun, Liu Yuwei Jan 2026

Huff-N-Puff Experiments Of Mixed Co2 And Formation Water For Enhanced Oil Recovery Of Shale Oil In The Subei Basin, Xiao Pufu, Zhang Jie, Yang Zhengmao, Wang Rui, Cui Maolei, Lei Mengmeng, Tian Yunfei, Zeng Jun, Liu Yuwei

Coal Geology & Exploration

Objective In the Subei Basin, the depletion-drive development of shale oil following reservoir volume fracturing faces challenges such as rapid production decline and low oil recovery. To address these issues, this study explored an experimental method of CO2 + formation water (also referred to as carbonated water) huff and puff for enhanced oil recovery (EOR) by combining the felsic, clayey, and organic-rich characteristics of shale oil reservoirs in the Subei Basin, along with CO2 high pressure quality exchange technology. Methods Through multiple physical simulation experiments in the laboratory, combined with nuclear magnetic resonance (NMR) experiment technology, this study …


Numerical Simulation Of Co2 Sequestration Combined With Enhanced Geothermal Energy Extraction In Deep Saline Aquifers, Xie Zehao, Zhang Liehui, Zhao Yulong, Cao Cheng, Kou Zuhao, Zhang Deping, Li Jinlong Jan 2026

Numerical Simulation Of Co2 Sequestration Combined With Enhanced Geothermal Energy Extraction In Deep Saline Aquifers, Xie Zehao, Zhang Liehui, Zhao Yulong, Cao Cheng, Kou Zuhao, Zhang Deping, Li Jinlong

Coal Geology & Exploration

Objectives and Methods Deep saline aquifers represent ideal spaces for geologic CO2 sequestration while also featuring high geothermal gradients and abundant geothermal resources. The combination of CO2 sequestration and geothermal energy extraction holds great significance for enhancing the CO2 sequestration effect and achieving integrated resource development of deep saline aquifers. Therefore, this study proposed a development approach that combined CO2 sequestration with geothermal energy extraction in deep saline aquifers and established a thermo-hydro-chemical coupling numerical simulation model of the gas-water two-phase flow. Accordingly, it explored the optimal injection mode, production and injection well patterns, and injection …