Results 21 to 30 of about 1,119,186 (381)

Decay on Cyclic CO₂ Capture Performance of Calcium-Based Sorbents Derived from Wasted Precursors in Multicycles

Energies, 2022
In order to obtain the cheap waste calcium-based sorbent, three wasted CaCO3 precursors, namely carbide slag, chicken eggshells, and analytical reagent-grade calcium carbonate, were selected and prepared at 700 °C to form calcium-based sorbents for CO2 ...
Dehong Gong, Zhongxiao Zhang, Ting Zhao
doaj   +1 more source

Use of 2,4-D in Mixture with Ethephon and Calcium Carbide in Pineapple Crop [PDF]

Planta Daninha, 2019
: The 2-Chloroethylphosphonic acid (ethephon) and calcium carbide are used to induce and synchronize the flowering of pineapple crop. Some farmers have used the 2,4-D herbicide in combination with these flowering inducers.
R. RAPOSO JR., G.A.M. PEREIRA, C.C. MATOS, L.H. BARCELLOS JR., D.F. PAULA, A.A. SILVA   +5 more
doaj   +1 more source

Lead and Cadmium Ions Mitigation in Soil using Calcium Carbide Waste-Carbonised Lophira Alata Sawdust Composite (CCW-CLAS) as Immobilizing Agent

Aceh International Journal of Science and Technology, 2022
Soil contamination with heavy metals is a global environmental matter of interest due to its thinkable dangers to humans, environmental health, and the ecosystem preceding shortfalls in agricultural produce and dangerous health outcomes as they penetrate
Okponmwense Moses*, Queen Omone Asekhame
doaj   +1 more source

The experience of using calcium carbide for the deoxidation of steel to replace aluminum in the conditions of OJSC «BSW – Management company of the holding «BMC»

Литьë и металлургия, 2020
The article deals with issues related to the use of calcium carbide in steelmaking, instead of secondary aluminum and other deoxidizing materials, in order to reduce the cost of deoxidizing steel and slag.It was assumed that reducing the content of ...
О. M. Grudnitsky
doaj   +1 more source

Spent carbide waste retains toxicity long term after disposal in caves and mines

Acta Carsologica, 2012
We studied the environmental impact of wastes derived from calcium carbide, which is widely used for generating acetylene in industry and speleology. It was shown that spent carbide is toxic for biota and harmful to cave ecosystems and the surrounding ...
Andrew A. Semikolennykh, Anna A. Rahleeva, Tatjana B. Poputnikova   +2 more
doaj   +1 more source

Sequelae of carbide-related thermo-chemical injury: A retrospective analysis

Indian Journal of Ophthalmology, 2023
Purpose: To describe the outcomes of eyes with calcium carbide (CaC2)-related thermo-chemical injury. Methods: This study included 28 eyes of 23 patients who presented with calcium carbide-related ocular burns.
Anchal Arora, Swapna S Shanbhag, Dilip K Mishra, Nikhila Malepati, Sujata Das, Smruti R Priyadarshini, Amrita Mohanty, Srikant K Sahu   +7 more
doaj   +1 more source

SiO₂ Promoted CaO Diffusion to C Phase at 1500 and 1700 °C

Energies, 2021
To better understand the mass transfer behaviors in CaC2 production from CaO and coke, this paper studies the diffusion behaviors of CaO and graphite, with or without ash, at 1500 and 1700 °C. CaO and graphite are pressed into tablets and heated alone or
Lijuan Ni, Renxing Wang, Qingya Liu, Junfei Wu, Yue Pan, Zhenyu Liu   +5 more
doaj   +1 more source

Calcium carbide residue modification of natural volcanic ash: Strength enhancement mechanisms and life cycle assessment

Case Studies in Construction Materials
In volcanic regions, volcanic ash cannot be directly used as an engineering material in construction, which necessitates stabilization. This study proposes a method for stabilizing volcanic ash using calcium carbide residue.
Mingmin Zhang, Changming Wang, Hailiang Liu, Di Wu, Baohong Lv   +4 more
doaj   +1 more source

Removal of Residual Element Antimony from Molten Steel by CaC₂-Containing Refining Slag

Metals, 2023
Increasing the use of steel scrap and enhancing its recycling utilization are important strategies for fostering the low-carbon and environmental-friendly growth of the iron and steel industry in China.
Zihong Chen, Mengke Liu, Guojun Ma, Xiang Zhang, Tianyu Du, Zhengliang Xue   +5 more
doaj   +1 more source

Hydrodynamic air lubricated compliant surface bearing for an automotive gas turbine engine. 2: Materials and coatings [PDF]

, 1978
Material coatings for an air-lubricated, compliant journal bearing for an automotive gas turbine engine were exposed to service test temperatures of 540 C or 650 C for 300 hours, and to 10 temperature cycles from room temperatures to the service test ...
Bhushan, B., Gray, S., Ruscitto, D.
core   +2 more sources