Results 61 to 70 of about 215,200 (314)

Experimental study on the extraction of aluminum and iron from coal gangue by thermal activation and acid leaching method

能源环境保护
A massive amount of coal gangue (an accompanying solid waste) is produced during coal mining and washing processes, leading not only to the wastage of land resources but also to environmental impacts.
Youzhong ZHANG, Min CHE, Yiqing LIU, Ziyan CHE, Yongsheng FU   +4 more
doaj   +1 more source

Vanadium Extraction from a Vanadium-bearing Stone Coal in Shanyang

Kuangchan zonghe liyong
In this article, vanadium is extracted from a vanadium-bearing stone coal in Shanyang by the process of melt-roasting-water leaching. The experimental roasting and leaching conditions were optimized, including sodium peroxide dosage, roasting time ...
Yimeng WANG, Na LI, Xueer HE, Huiyun LEI
doaj   +1 more source

Predicting the dissolution kinetics of silicate glasses using machine learning

, 2017
Predicting the dissolution rates of silicate glasses in aqueous conditions is a complex task as the underlying mechanism(s) remain poorly understood and the dissolution kinetics can depend on a large number of intrinsic and extrinsic factors.
Bauchy, Mathieu, Burton, Henry, Krishnan, N. M. Anoop, Mangalathu, Sujith, Smedskjaer, Morten M., Tandia, Adama   +5 more
core   +1 more source

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

Advanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar, Akash Vyas, Mohammad Aatif Qazi, Nashit Jalal, Maria Ophelia Jarligo, Mostafa Yakout, Jing Liu, André McDonald   +7 more
wiley   +1 more source

Current Situation of Vanadium Resources and New Process Progress of Vanadium Extraction from the Stone Coal Vanadium Ore

Kuangchan zonghe liyong
The main occurrence minerals of vanadium include vanadium titanomagnetite, stone coal vanadium and vanadium lead ores. At present, the vanadium extraction processes of stone coal vanadium ore are mainly sodium roasting-water leaching and calcification ...
Jinwei QU, Na MA, Yuefang HU, Xiaoying WENG, Zhihe DOU   +4 more
doaj   +1 more source

Simulated nitrogen leaching, nitrogen mass field balances and their correlation on four farms in south-western Finland during the period 2000-2005 [PDF]

, 2007
Nitrogen (N) gross balance is one of the indicators designed for following developments in agriculture in the European Union. A nutrient surplus occurs when the quantity of a nutrient applied in fertilizers is greater than that removed during harvest. In
Granlund, Kirsti, Rankinen, Katri, Rita, Hannu, Salo, Tapio   +3 more
core  

In Situ Constructed Magnetic Core‐Shell Hydrogen‐Bonded Organic Framework‐on‐Metal–Organic Framework Structure: an Efficient Catalyst for Peroxymonosulfate Activation

Advanced Functional Materials, EarlyView.
In this work, a magnetic core‐shell catalyst (HOF‐on‐Fe3O4/ZIF‐67) is successfully synthesized, consisting of a metal–organic framework (ZIF‐67) with magnetic Fe3O4 as the core and a porous hydrogen‐bonded organic framework (HOF) as the shell. The catalyst efficiently activated peroxymonosulfate, resulting in rapid and effective removal of water ...
Yingying Du, Chenhui Ding, Chao Deng, Susanta Banerjee, Seema Agarwal   +4 more
wiley   +1 more source

In Situ Growth of Cu₂O-Coated Cu Aggregates on Wood and Bamboo for Efficient Mold Resistance

Surfaces
Wood and bamboo products with log-term carbon storage, less energy consumption, and CO2 emission face the challenge of fungal infection. Their antifungal property can be enhanced by Cu-based nanoparticles. Herein, Cu2O-coated Cu (Cu2O@Cu) aggregates were
Dayong Zhou, Fuhua Zhang, Mingli Chen
doaj   +1 more source

3D (Bio) Printing Combined Fiber Fabrication Methods for Tissue Engineering Applications: Possibilities and Limitations

Advanced Functional Materials, EarlyView.
Biofabrication aims at providing innovative technologies and tools for the fabrication of tissue‐like constructs for tissue engineering and regenerative medicine applications. By integrating multiple biofabrication technologies, such as 3D (bio) printing with fiber fabrication methods, it would be more realistic to reconstruct native tissue's ...
Waseem Kitana, Indra Apsite, Leonid Ionov   +2 more
wiley   +1 more source

MnI‐Functionalized Covalent Organic Framework as Efficient Electrocatalyst for CO2 Reduction in a Catholyte‐Free Zero‐Gap Electrolyzer

Advanced Functional Materials, EarlyView.
This work demonstrates the successful integration of a phenanthroline‐based 2D COF with MnI catalytic sites into a catholyte‐free membrane‐electrode‐assembly cell for CO2 electroreduction. The crystalline COF actively suppresses Mn⁰–Mn⁰ dimerization, achieving a turnover frequency of 617 h⁻¹ at 2.8 V (full‐cell potential), and enabling stable operation.
Laura Spies, Marcos Eduardo G. Carmo, Gonçalves J. Marrenjo, Stephan Reuther, Patrick Ganswindt, Antonio Otavio T. Patrocinio, Thomas Bein, Osmando F. Lopes, Jenny Schneider   +8 more
wiley   +1 more source