Results 91 to 100 of about 1,642,916 (241)

Peroxodisulfate‐Enhanced Leaching of Deep‐Sea Manganese Crusts and Sulfides

Chemie Ingenieur Technik, EarlyView.
Ammonium peroxodisulfate enables efficient leaching of deep‐sea manganese crusts and massive sulfides while offering electrolytic recycling. High leaching yields for V, Mn, Co, Mo, Sn, and W, along with complete leaching of As and Sb, highlight its potential as a powerful and sustainable oxidant for marine resource processing.
Bastian Hansel, Lucas Thumeyer, Ebbe H. Hartz, Håvard Hallås Stubseid, Peter Fröhlich, Martin Bertau   +5 more
wiley   +1 more source

Numerical simulation of interface dip angle on hydraulic fracture propagation path in composite coal rock

Journal of Applied Science and Engineering
For deep coalbed methane (CBM) exploitation, it is very important to control hydraulic fractures in coal seam to avoid the decrease of fracturing energy caused by crossing coal-rock interface.
Dongjie Jiang, Fan Zhang, Rui Guo, Junjie Guo, Ji He, Wei Han, Yongming Song, Zidong Zhao   +7 more
doaj   +1 more source

Evaluation of Pervaporation and Nanofiltration Membranes for Water Recovery From Thermo‐Responsive Draw Solution

Chemie Ingenieur Technik, EarlyView.
Integrating thermo‐responsive draw solutions with suitable water‐recovery technologies could enable more efficient hybrid desalination. This study compares pervaporation and nanofiltration, revealing key trade‐offs between water productivity and polymer retention and providing guidance for future FO‐based brine treatment systems.
Nadin Al‐Jariry, Malwin Uthleb, Ibrahim M. A. ElSherbiny, Hannes Richter, Liang Yu, Frank Lipnizki, Josefine Enman, Annelie Hedström, Marcus Weyd, Jonas Hedlund   +9 more
wiley   +1 more source

Feasibility Study of Basic Steel Slag as Anode of Li‐Ion Batteries

CleanMat, EarlyView.
This study presents a low‐cost, eco‐friendly approach to utilize basic steel slag as a sustainable anode for lithium‐ion batteries, demonstrating good cyclic stability, rate capability, and long‐term electrochemical performance. ABSTRACT The elevated expenses and utilization of hazardous chemicals in traditional chemical synthesis of anode materials of
Rudra Barua, Konok Chandra Bhowmik, Md. Arafat Rahman   +2 more
wiley   +1 more source

Review and prospects of shear test of bolted rock joints

Deep Underground Science and Engineering, EarlyView.
The laboratory shear test equipment, test method, and numerical simulation of bolted rock joints were summarized. The shortcomings and limitations of the current research were analyzed, and the research prospects were proposed. Abstract Rock bolting is a critical approach in geotechnical engineering for supporting weak rocks.
Shulin Ren, Fan Yang, Manchao He, Yong Yuan, Zhigang Tao   +4 more
wiley   +1 more source

Numerical study of hydraulic fracturing on single-hole shale under fluid–solid coupling

Geomechanics and Geophysics for Geo-Energy and Geo-Resources
To investigate the hydraulic fracture extension pattern of single-hole shale during hydraulic fracturing under fluid–solid coupling, this paper utilizes seepage–stress–damage coupling software to establish a mechanical model of hydraulic fracture ...
Xi Xia, Zhonghu Wu, Huailei Song, Wentao Wang, Hengtao Cui, Motian Tang   +5 more
doaj   +1 more source

Shear behavior of bolt–grout interfaces under constant normal stiffness: Influence of grout strength and thickness

Deep Underground Science and Engineering, EarlyView.
The effects of grout strength and thickness on the shear behavior of bolt–grout interfaces (BGI) under constant normal stiffness conditions are investigated. Shear strength, failure modes, and acoustic emission characteristics are examined. The findings reveal that grout strength exerts a significantly greater influence on BGI shear strength and ...
Sunhao Zhang, Dongqi Shang, Yujing Jiang, Jinge Zhang, Hongbin Chen, Tianqi Jiang   +5 more
wiley   +1 more source

Slip versus dilation tendency parameter space as a tool for prospecting structurally controlled geothermal systems in greenfield: insights from the greater Ruhr region

Deep Underground Science and Engineering, EarlyView.
This study highlights that with the static and time‐dependent evolution of slip versus dilation tendency parameter space, structurally controlled deep geothermal systems can be selected within areas of higher permeability and lower seismic hazard. Abstract Faults play a vital role in the Earth's hydraulic system by facilitating fluid flow when dilating
Michal Kruszewski, Alessandro Verdecchia, Oliver Heidbach, Rebecca M. Harrington, David Healy   +4 more
wiley   +1 more source

Influence of fracture parameters on hydraulic shear seepage characteristics of granite

Case Studies in Thermal Engineering
To reveal the influence mechanism of different fracture parameters on the permeability characteristics of hot dry rock after hydraulic shear. The self-made high temperature true triaxial hydraulic shear test device and rock roughness profile tester were ...
Jupeng Tang, Honghao Yu, Zhihao Wei, Xiao Zhang   +3 more
doaj   +1 more source

Permeability of granite from a shallow buried mountain pipe gallery tunnel under unloading confining pressure

Deep Underground Science and Engineering, EarlyView.
Triaxial compression tests under unloading confining pressure conditions were conducted to systematically analyze the permeability behavior of granite retrieved from the different classification surrounding rocks. Abstract The rock mass within mountain tunnels undergoes complex changes in permeability, strength, and deformation during tunneling ...
Xiaoyan Zhang, Yonghua Ye, Jianping Zuo, Baojiang Han, Weigang Jiao   +4 more
wiley   +1 more source