Email Address

[email protected]

Phone Number

+0086-371-86162511

rare earth adsorption

Get In Touch

Adsorption of rare earth metals from wastewater by

2020-3-15 · In order to recover rare earth elements from wastewater, their adsorption from low-concentration aqueous solutions, by using nanomaterials, is investigated due to technological simplicity and high efficiency.

Get Quote

Adsorption of Rare Earth Elements onto DNA

2021-3-12 · The recovery and separation of rare earth elements (REEs) are of national importance owing to the specific usages, high demand, and low supply of these elements. In this research, we have investigated the adsorption of rare earth elements onto DNA-functionalized mesoporous carbons with a BET surface area of 605 m 2 /g and a median mesopore width of 48 Å.

Get Quote

Adsorption of rare earth metals: A review of recent

2016-9-1 · q e C e is the ratio where q e is adsorbed rare earth metal at concentration (mg/L) and C e is the residual rare earth metal concentration in the solution (mg/L). c K = q m X b L calculated from Langmuir constants ( q m ) is the maximum adsorption capacity in mg/g and b L units in L/mg.

Get Quote

Adsorption of rare earth elements onto bacterial cell

2005-6-15 · Adsorption of rare earth elements (REE) onto the cell walls of Bacillus subtilis (a gram-positive bacterium) and Escherichia coli (a gram-negative bacterium) was studied between pH 2.5 and 4.5 and at various bacterial concentrations. The distribution coefficients of REE between the bacterial cell surface and water showed a pattern with a prominent enrichment of heavy REE (HREE), including a

Get Quote

Efficient and rapid adsorption of rare earth elements

2020-9-1 · The maximum adsorption capacity of FMG for rare earth elements is prominently higher than FG. Adsorption isotherms, kinetics, thermodynamics, and desorption were comprehensively discussed. FMG was characterized and studied by VSM, XRD, SEM, FTIR, BET, and zeta potential.

Get Quote

Adsorption ability of rare earth elements on clay

2016-5-1 · The adsorption behaviors of rare earth elements on clay minerals would have great influence on the mineralization process and the leaching process of the ion-adsorption type rare earths ore. In this work, the adsorption thermodynamics of REEs on kaolin were investigated thoroughly and systematically. The experimental results showed that the adsorption characteristics of La, Nd, Y on kaolin did fit well with the Langmuir isotherm model and their saturated adsorption

Get Quote

Adsorption behavior of rare earth elements on silica

2015-2-1 · Adsorption and desorption experiments for all rare earth metal ions were carried out in a batch system. A typical adsorption experimental procedure was as follows: the adsorbent (0.05 g, dry basis) was added to 5 mL of a solution containing metal ions, and the mixture was shaken at 298 K for at least 1 day (except the time course test).

Get Quote

Anions Enhance Rare Earth Adsorption at Negatively

2020-9-24 · Adsorbed SCN ions at the floating monolayer increase the overall negative charge density, leading to enhanced trivalent rare earth adsorption. Surface sensitive X-ray fluorescence measurements show that the surface coverage of Lu 3+ ions can be triple the apparent surface charge of the floating monolayer in the presence of SCN –.

Get Quote

Experimental Study on Adsorption of Rare Earth Elements

The aim of this article is to collect adsorption data of rare earth elements (REEs) by halloysite and kaolinite through simulation experiments to learn about the differentiation phenomenon of rare earth elements in the weathered crust rare earth ore, and whether kaolinite and halloysite play an important role in this process. 2 Methods

Get Quote

China's ion-adsorption rare earth resources, mining

2018-11-19 · Ion-adsorption rare earth deposits were first discovered in Ganzhou (115111′–115 149′ E and 25135′8″–26120′53″N), China, in 1970. Initially, it was not considered as a mineral phase because it did not behave like any of the knownphases of rare earth minerals. The ion-adsorption rare earth deposits were formed bychemical

Get Quote

Adsorption of rare earth elements by strong acid

2018-11-19 · The equilibrium and kinetic characteristics of rare earths adsorption process using the strong acid macro reticular resin Dowex 50X8 from El-Erediya chloride liqueurs have been determined. The adsorption parameters including pH, contact time, temperature, resin to aqueous ratio and rare earths initial concentration in aqueous have been optimized.

Get Quote

Adsorption of Rare Earth Elements onto the

2019-12-14 · Phosphogypsum (PG), the waste byproduct resulting from wet process phosphoric acid production, is employed as a selective and effective adsorbent for total rare earth elements (REEs) from aqueous solution and leach liquor. The elaboration of PG adsorbent complemented after some physical treatments. Adsorption and elution studies carried out in experimental batches, including the effect of

Get Quote

Engineered microbes for rare-earth element adsorption

Our approach for rare-earth element extraction and recovery uses engineered bacterium that is selective for rare earth adsorption. The bacterium exhibits enhanced adsorption affinity and capacity for rare earth metals. Our approach relies on microorganisms to extract rare earths from sources such as electronic wastes, mine tailings, geothermal

Get Quote

Anions Enhance Rare Earth Adsorption at Negatively

2020-5-14 · Anions Enhance Rare Earth Adsorption at Negatively Charged Surfaces. Nayak S, Lovering KA, Bu W, Uysal A. Anions are expected to be repelled from negatively charged surfaces. At aqueous interfaces, however, ion-specific effects can dominate over direct electrostatic interactions.

Get Quote

Experimental Study on Adsorption of Rare Earth Elements

The aim of this article is to collect adsorption data of rare earth elements (REEs) by halloysite and kaolinite through simulation experiments to learn about the differentiation phenomenon of rare earth elements in the weathered crust rare earth ore, and whether kaolinite and halloysite play an important role in this process. 2 Methods

Get Quote

Nature Communications: Adsorption of rare earth elements

2020-10-19 · Global resources of heavy Rare Earth Elements (REE) are dominantly sourced from Chinese regolith-hosted ion-adsorption deposits in which the REE are inferred to be weakly adsorbed onto clay minerals. Similar deposits elsewhere might provide alternative supply for these high-tech metals, but the adsorption mechanisms remain unclear and the adsorbed state of REE to clays has

Get Quote

Characteristics and Genesis of Ion Adsorption-Type

2016-1-1 · Ion adsorption-type rare earth element (REE) deposits are the predominant source of heavy REE (HREEs) and yttrium in the world. Economic examples of the deposits are confined almost exclusively to areas underlain by granitic rocks in southern China. These deposits are termed “ion adsorption-type” because the weathered granites contain more

Get Quote

China's ion-adsorption rare earth resources, mining

2018-11-19 · China's ion-adsorption rare earth resources, mining consequences and preservation X. Jin Yanga,n, Aijun Lina, Xiao-Liang Lib, Yiding Wuc, Wenbin Zhoud, Zhanheng Chene a Department of Environmental Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China b Department of Environmental Economics, Chinese Academy for Environmental Planning,

Get Quote

Selective recovery of rare earth elements from ion

Ion-adsorption rare earth element (REE) ores are strategic mineral resources, particularly for heavy REEs. To reduce the amount of nitrogen in the form of ammonia in waste waters and to increase the low recovery efficiency of the current extraction process for REEs, we developed a novel environmentally friendly stepwise solvent extraction method for the separation and enrichment of REEs.

Get Quote

Extraction of Rare Earth Elements from non- Chinese Ion

2016-3-11 · Extraction of Rare Earth Elements from Ion Adsorption Clays Proceedings of EMC 2015 5 Figure 3: Ion Adsorption Clay raw material (left: Fe-hydroxide enriched material, right: hematite enriched material) The analysed IAC samples primarily consist of SiO 2 (~48-58 %), Al 2 O 3 (~27-38 %), Fe 2 O 3 (~11-16 %) and TiO 2 (1-2 %).

Get Quote
Latest News