Results 1 to 10 of about 301,453 (164)

Thermal-hydraulic characteristics of nitric acid: An experimental and numerical analysis [PDF]

open access: yesHeliyon
Nitric acid is one of the most important products in the chemical industry, ranking third globally in terms of acid production. Although nitric acid has many industrial applications, its primary function is the production of ammonium nitrate, which is ...
Meshal F. Alhasan   +5 more
doaj   +2 more sources

The Preparation of 90Y Generator with Hydrated Manganese Dioxide

open access: yesJournal of Isotopes, 2021
The adsorption behaviors of hydrated manganese oxide (HMD) for Strontium and Yttrium in hydrochloric acid and nitric acid solutions were studied. HMD does not adsorb Strontium in various concentrations of hydrochloric acid and nitric acid solutions.
YIN Bangshun;DENG Qimin;PAN Junnan;CHENG Zuoyong
doaj   +1 more source

Salicylic Acid and Jasmonic Acid Increase the Polysaccharide Production of Nostoc flagelliforme via the Regulation of the Intracellular NO Level

open access: yesFoods, 2023
To significantly improve the polysaccharide production of Nostoc flagelliforme, a total of 12 chemicals were evaluated for their effects on polysaccharide accumulation.
Cheng-Feng Han   +7 more
doaj   +1 more source

Oxidation Mechanism of Oxalic Acid on Platinum, Glassy Carbon and Boron Doped Diamond Electrodes in Nitric Acid Medium

open access: yesHe huaxue yu fangshe huaxue, 2023
In order to understand the electrochemical oxidation mechanism of oxalic acid on platinum, glassy carbon and boron doped diamond(BDD) electrodes in nitric acid medium, cyclic voltammetry and linear sweep voltammetry were used to carry out electrochemical
QIAO Lu, ZHANG Hu
doaj   +1 more source

Comparison of the Three-Phase Corrosion Behavior of SiN and 304L Stainless Steels in 6 M Nitric Acid Solution at Different Temperatures

open access: yesMetals, 2022
In this work, the three-phase corrosion behavior of SiN and 304L stainless steels was comparatively investigated in a 6 M nitric acid solution at different temperatures.
Shengxuan Sun   +5 more
doaj   +1 more source

Sequential recovery of metals from waste printed circuit boards using a zero-discharge hydrometallurgical process

open access: yesCleaner Engineering and Technology, 2021
Several hydrometallurgical routes have been proposed in the literature to treat printed circuit boards (PCBs) from waste electronic equipment. These employ different chemical reagents for the recovery and separation of metals as metals or their salts ...
Vamsi Vikram Gande   +3 more
doaj   +1 more source

Electrochemical Behavior of ReO-4 in Sulfuric Acid and Nitric Acid Media

open access: yesHe huaxue yu fangshe huaxue, 2022
99Tc is one of the main fission products in nuclear spent fuel in power reactor. Its half-life period is 2.13×105 years, which has long-term harm to the ecological environment, and it gets special attention in PUREX process.
DENG Yi-lin, ZHANG Hu
doaj   +1 more source

Determination of rare earth elements, uranium and thorium in soil samples by microwave-assisted acid digestion and inductively coupled plasma mass spectrometry [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2021
This paper presents a simple microwave digestion method for soil samples leading to correct determination of the rare earth elements (Ce, La, Nd, Sc), uranium (U) and thorium (Th) using inductively coupled plasma mass spectrometry (ICP-MS).
Sasikarn Nuchdang   +3 more
doaj   +1 more source

Separation of palladium and silver from E-waste leachate: effect of nitric acid concentration on adsorption to Thiol scavenger

open access: yesChemical Engineering Journal Advances, 2022
The development of recovery techniques for metals present in low concentrations in E-waste, such as silver and palladium, is important from the aspect of the circular economy.
Joona Rajahalme   +2 more
doaj   +1 more source

The utilization demineralized rice husk waste for biofuel source via pyrolysis: thermogravimetric analysis and kinetic study [PDF]

open access: yesMATEC Web of Conferences, 2019
Rice husk is considered as agricultural waste that causes environmental problem during its handling. In this study, rice husk was treated with acid (citric acid and nitric acid) solutions prior used as raw material for producing biofuel and chemicals via
Wijayanti Hesti   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy