Results 21 to 30 of about 13,664 (266)

Spatial distribution of solute leaching with snowmelt and irrigation: measurements and simulations [PDF]

Hydrology and Earth System Sciences, 2013
Transport of a tracer and a degradable solute in a heterogeneous soil was measured in the field, and simulated with several transient and steady state infiltration rates.
D. Schotanus, M. J. van der Ploeg, S. E. A. T. M. van der Zee   +2 more
doaj   +1 more source

Leach Rates of Lead-Iron Phosphate Glass Waste Forms [PDF]

Journal of Nuclear Science and Technology, 1988
Lead-iron phosphate glasses loaded with simulated high-level nuclear wastes at temperatures between 900 and 1,100°C were studied on their soaking behavior in distilled water by means of leachate solution analysis. The obtained results showed that the leach rates of the glass waste forms were at least 10 to 100 times lower than that of the currently ...
YANAGI, Tadashi, YOSHIZOE, Makoto, NAKATSUKA, Naoki   +2 more
openaire   +1 more source

Extraction of Vanadium from Vanadium Titanomagnetite Concentrates by Leaching Process with Titanium White Waste Acid

Kuangchan zonghe liyong, 2022
In order to improve the comprehensive utilization rate of V2O5 form vanadium titanomagnetite concentrates, the direct leaching and the roasting-leaching tests were carried out using titanium white waste acid byorthogonal experiment method. The results of
Enhui Wu, Jun Li, Jing Hou, Zhong Xu, Ping Huang, Qianshu Liu, Song Lv   +6 more
doaj   +1 more source

Experimental Study on Cyanidation Leaching of a Low-grade Gold Mine in Guangxi

Kuangchan zonghe liyong, 2023
Gold content of a low-grade gold ore in Guangxi is 1.29 g/t, the gangue minerals are mainly quartz, and the content of non-ferrous metals such as copper, lead, zinc and other harmful elements arsenic is extremely low.
Linsong Yuan, Shujuan Dai, Xin Su, Xin Yu, Xiang Yue, Chunqi Liu   +5 more
doaj   +1 more source

Investigation of the leaching behavior of Na and Si in simulated HLW borosilicate glass obtained from the waste of a 1000 MWe class PWR reactor: using the response surface method

Frontiers in Chemistry
The immobilization of high-level nuclear waste (HLW) in glass waste matrices provides the key safety function of slowing down radionuclide emissions from an underground disposal site.
Mohammad Hosseinpour Khanmiri, Mohammad Hosseinpour Khanmiri, Ali Yadollahi, Mohammad Samadfam, Hamid Sepehrian, Mohammad Outokesh   +5 more
doaj   +1 more source

Leaching of vanadium, potassium, and iron from spent catalyst of the manufacture of sulfuric acid

Journal of Materials Research and Technology, 2021
The sulfuric acid industry produces large volumes of spent catalyst containing vanadium. To develop an efficient method for vanadium recovery, hydrogen peroxide was used to oxidize sulfur in the spent catalyst, forming sulfuric acid, which, in turn ...
Liushun Wu, Chao Dai, Haichuan Wang, Jue Wang, Yuanchi Dong   +4 more
doaj   +1 more source

An Optimized Method for Determination of Ionic-phase Rare Earth Elements by ICP-MS Using Ammonium Sulfate Leaching

Yankuang ceshi, 2018
BACKGROUND The accurate determination of ionic phase rare earths in ion-adsorption rare earths is of great significance for the evaluation of rare earth ore bodies. Ionic phase rare earths are adsorbed on clay minerals in the form of hydroxyl or hydrated
ZHANG Lei, ZHOU Wei, ZHU Yun, QU Wen-jun, FAN Xing-tao, LI Ying-chun   +5 more
doaj   +1 more source

Different Treatments of Zinc Oxide Ore in Caustic Leaching Process

Kuangchan zonghe liyong, 2022
Resource recycling of Zinc oxide ore is an important concern in zinc smelting industry at present. In this study, comparison of ultrasonic-assisted and traditional treatment of zinc oxide ore with caustic leaching process was investigated.
Jie Yuan, Yuanyuan Chen, Mingqin Zhou, Guangqian Gong   +3 more
doaj   +1 more source

Comparison of nitrification inhibitors to restrict nitrate leaching in a maize crop irrigated under mediterranean conditions

, 2010
The aim of this paper was to compare dicyandiamide (DCD) and 3,4 dimethylpyrazole phosphate (DMPP) as inhibitors of ammonium oxidation and nitrate leaching after applying fertilizer to a maize (Zea mays L.) crop grown under Mediterranean conditions.
Diez, J.A., Vallejo Garcia, Antonio, Arauzo, M., Sanz, A., Diez, J. A., Hernaiz, P. J., Hernaiz, P.J., Sanz Cobeña, Alberto, Vallejo, A.   +8 more
core   +1 more source

Effect of Crushing Particle Size for Leaching of Lithium and Cobalt with Citric Acid from Spend Lithium Ion Battery

Kuangchan zonghe liyong, 2023
This is an essay in the field of metallurgical engineering. The effects of crushing particle size and leaching conditions on the leaching of lithium cobalt from spend lithium-ion batteries in the citric acid environment were studied, which provided some ...
Guiming Shi, Yichao Zhou, Lang Zhu, Chengdong Wang   +3 more
doaj   +1 more source