2023年12月19日· A recent study by Peng et al (2018) demonstrated the possibility to describe the kinetic sorption behaviors on soil by combining these adsorption processes on various reactive surfaces in the stirredflow systems2023年2月1日· In addition, this study is the first to leach REEs by the Yarrowia lipolytica Aspergillus niger Aspergillus niger (glucose as the carbon source) reached the highestComparative chemical and noncontact bioleaching of ion
2022年1月1日· A knowledge gap concerning the impact of pesticide mixture interactions on the adsorption on soils’ colloids, leaching potential, and mobility of pesticides along the2023年12月19日· Current models for inorganic ion transport in porous media describe the adsorptiondesorption processes mostly based on empirical adsorption isothermsPrediction competitive multiions leaching under ScienceDirect
2020年6月30日· Adsorption, degradation and leaching migration characteristics of chlorothalonil in different soils The adsorption, degradation and leaching2020年9月1日· Global resources of heavy Rare Earth Elements (REE) are dominantly sourced from Chinese regolithhosted ionadsorption deposits in which the REE areAdsorption of rare earth elements in regolithhosted clay
Adsorption results indicated that alachlor, bromacil and diuron have different shapes Leaching potentials indicated that alachlor totally disappeared from the top 5 cm and2020年11月4日· It is important to evaluate leaching behavior in agricultural soils to prevent the pollution of groundwater by pesticides We identified the distribution coefficientsSorption and leaching characteristics of pesticides in
4 5 Onedimensional, convectivedispersiveadsorptive flow models, in Cartesian and polar coordinates, representing flow of chemicals in soils (eg, leaching) and toward1983年3月1日· Abstract Onedimensional, convectivedispersiveadsorptive flow models, in Cartesian and polar coordinates, representing flow of chemicals in soils (eg, leaching) and toward plant roots, areCompetitive Adsorption During Solute Transport in
2020年10月28日· Propiconazole (PPC) and difenoconazole (DFC) are often combined for field applications The resulted coexsistence of PPC and DFC may have an effect on the fate of their individuals in soil In this study, adsorption, desorption and leaching of PPC and DFC alone and their combinations were investigated in five different soils1983年3月1日· Abstract Onedimensional, convectivedispersiveadsorptive flow models, in Cartesian and polar coordinates, representing flow of chemicals in soils (eg, leaching) and toward plant roots, areCompetitive Adsorption During Solute Transport in
2021年9月1日· The adsorption performance of organic and inorganic micropollutants from water and complex wastewater can also be strongly hampered due to the presence of other species that promote various intermolecular interactions and a competitive adsorption system (BaltrėnaitėGedienė et al, 2020; Shin et al, 2021)2022年4月24日· In this study, hydrochars and biochars were prepared from rice husk (RH) and Zizania latifolia straw (ZL) at various pyrolysis temperatures as absorbents, for removing toxic ions from single and competitive solutions of cadmium (Cd) and/or lead (Pb) The adsorption efficiencies of Cd and Pb in both hydrochars and biochars were lower in theA comparative study on adsorption of cadmium and lead by
2015年11月1日· CIL circuit is a process of continuous leaching of gold from ore to liquid and countercurrent adsorption of gold from liquid to carbon particles in a series of tanks The CIL process concentrates gold from 25–35 g/t in ore to 2000 to 6000 g/t on carbon Although the earliest process was in South Africa in 1890, CIP/CIL was first introduced2023年10月24日· Uranium (U) contamination in groundwater of the uranium mines exploited using the in situ leaching (ISL) technology (also referred to as the ISL uranium mines) has attracted wide international attention Since the adsorption of U in groundwater by aquifer media influences the migration scope of U, understanding the U adsorptionCharacteristics and influencing factors of uranium adsorption by
2020年1月1日· The adsorption or retention of pesticides is directly proportional to the content of clay present in soils For example, acetochlor recovery (%) was much less (84%) in soil having high clay content (236%) than in soil (94%) containing less clay content (344%) (Durovic et al, 2009)Similarly, metolachlor retention in soils was also positivelyModeling the Kinetics of the Competitive Adsorption and Desorption of Glyphosate and Phosphate on Goethite and Gibbsite and in Soils Environmental Science & Technology, Vol 38, Issue 6, p 1718 Glyphosate and phosphorus leaching and residues in boreal sandy soil Plant and Soil, Vol 323, Issue 12, p 267 CrossRef;Competitive adsorption and desorption of glyphosate and
Herein, we propose a Mo oxidative leaching strategy to promote the selfreconstruction of NiFebased precatalysts Operando Raman and timedependent Xray photoelectron spectra revealed that, during the OER operation, Mo dopants are oxidized to soluble molybdate ions (MoO 4 2− ) and leach into the electrolyte, facilitating the reconstruction2023年7月1日· 1 Introduction Antibiotics are widely used in animal husbandry to protect animals from various bacterial diseases and to promote growth (Yi et al, 2019)Approximately 70,000–140,000 tons of antibiotics are used for veterinary purposes each year worldwide (Bloem et al, 2017); further, as per the 2018 report of the InstituteCompetitive adsorption and desorption of three antibiotics in
Laboratory determinations of nitrate adsorption from a 0005M potassium nitrate solution indicated that exclusion occurred in soil from 020 cm and that adsorption increased through the subsoil from 016 mequiv/100 g at 4590 cm to 045 mequiv/100 g between 360 and 600 cm These profile changes appeared to be related to decreases in organicA separation process was proposed on the basis of the competitive adsorption results to separate metal ions from the binary system This technique was then successfully employed to separate Cd(II) and Ni(II) ions from the simulated leach liquor of spent Ni–Cd batteries Approximately 90% of the adsorbed CdSeparation of Cd(II) and Ni(II) in a binary mixture through competitive
2023年12月19日· Current models for inorganic ion transport in porous media describe the adsorptiondesorption processes mostly based on empirical adsorption isothermsNitrate adsorption and movement was studied in soil from depths of 015, 4090 and 160300 cm Adsorption was determined at concentrations ranging from 05 x 103 to 05M potassium nitrate and movement by adding 0, 3, 12 and 120 mg nitrogen15 ml of a potassium nitrate solution to packed columns and leaching with deionized water or 02MNitrate leaching and adsorption in a krasnozem from Redland
Leaching and adsorption circuits for maximum recovery During the leaching and adsorption process, it's important to have equipment that can guarantee you the maximum precious metals recovery At we understand this and offer leaching and adsorption circuits designed not only for optimal performance but also cost2008年5月6日· Simultaneous competitive adsorption behavior of Cd, Cu, Pb and Zn onto nine soils with a wide physical–chemical characteristics from Eastern China was measured in batch experiments to assess the mobility and retention of these metals in soils In the competitive adsorption system, adsorption isotherms for these metals on the soilsCompetitive adsorption of Cd, Cu, Pb and Zn by different soils of
2023年12月19日· 1 Introduction Trace element mobility in soilgroundwater systems is environmentally important and largely controlled by sorption and desorption processes within the soil matrix (Padilla and Selim, 2021)Although the thermodynamics and kinetics of trace element adsorptiondesorption in soils have been closely examined (Das et al, 2013, Li2023年2月1日· Ionadsorption rare earth ore was collected from Guangdong in the southern region of China, and the samples were collected in a natural environment The leaching volume circling method was used to determine the content of each ionadsorption phase of REEs in the raw ore (Deng et al, 2013)Comparative chemical and noncontact bioleaching of ionadsorption
2023年11月21日· Herein, we propose a Mo oxidative leaching strategy to promote the selfreconstruction of NiFebased precatalysts Operando Raman and timedependent Xray photoelectron spectra revealed that, during the OER operation, Mo dopants are oxidized to soluble molybdate ions (MoO 4 2− ) and leach into the electrolyte, facilitating theSemantic Scholar extracted view of "Sorption/Desorption, Leaching, and Transport Behavior of Pesticides in Soils: Influence of Metalaxyl and CGA 62828 Adsorption on the Leaching Behavior of Metal‐Contaminated Soils J Bassil Valérie Azzi A Naveau Tony Menhem Ibtihaj Rizk A El Samrani Environmental Science, ChemistrySorption/Desorption, Leaching, and Transport Behavior of
2022年1月1日· Adsorption kinetics models (the pseudofirstorder model, pseudosecondorder model and intraparticle diffusion model) had been employed to analyze the kinetic behaviors and mechanisms during the process (Table S3) (Meng et al, 2020)Through the results (Table S4), we observed that the pseudosecondorder model performed well for2015年10月19日· Different heavy metals present simultaneously in aqueous solutions should be separated to promote environmental protection In this study, the biosorbent, succinylated maize straw, wasSeparation of Cd(ii) and Ni(ii) in a binary mixture
2015年4月22日· The differences in the leaching and mass transfer characteristics of ionadsorption type rare earth ore between rare earth and nonrare earth impurities were investigated It is determined that the leaching kinetics of rare earths (REs), Mg and Ca could be described by the shrinkingcore model The leaching rate is controlled by innerCorpus ID: COMPETITIVE ADSORPTION DURING SOLUTE TRANSPORT IN SOILS: 1 MATHEMATICAL MODELS V Murali, L Aylmore Published 1 March 1983 Environmental Science Soil Science Onedimensional, convectivedispersiveadsorptive flow models, in Cartesian and polar coordinates, representing flow of chemicals in soilsCOMPETITIVE ADSORPTION DURING SOLUTE TRANSPORT IN
2021年9月4日· Purpose To evaluate atrazine behavior in an agricultural soil (adsorption–desorption, leaching) and the effects of bioaugmentation with the Arthrobacter sp strain AAC22, as a soil remediating strategy Material and methods An agricultural soil with a history of atrazine application was used Equilibrium batch experiments allowed2018年12月1日· Langmuir parameter analysis revealed no competitive adsorption between these two thermophilic archaea 191: 37−44 [21] LIANG Yuting, ZHU Shan, WANG Jun, AI Chenbing, QIN Wenqing Adsorption and leaching of chalcopyrite by Sulfolobus metallicus YN24 cultured in the distinct energy sources [J] InternationalAdsorption and leaching behaviors of chalcopyrite by two
2006年6月15日· Effects of anions are neither additive nor purely competitive Leaching tests, which compare the fraction of arsenic mobilized by the TCLP visavis an actual or more realistic synthetic landfill leachate, Competitive adsorption of phosphate and arsenate on goethite Environ Sci Technol, 35 (2001), pp 47534757 View in ScopusDOI: 101016/jgca202312024 Corpus ID: ; Prediction competitive multiions leaching under various flow chemistry conditions: Column studies and unified thermodynamickinetic modelingPrediction competitive multiions leaching under various flow
2016年9月1日· Through previous investigations with various goldbearing materials, leaching agents such as thiosulfate, thiourea, and iodineiodide have been found to have high stability of formed gold2011年5月1日· In a CIP plant, leaching is complete before the first adsorption tank, and gold is then recovered from the leached pulp in a series of (typically) 4–10 dedicated carbon adsorption tanks In a CIL plant, the carbon is added directly into the leach tanks, with the claimed advantage of lowering capital costs by eliminating the CIP adsorption tanksFactors influencing the rate of gold cyanide leaching and adsorption
Abstract Carboninleach and carboninpulp are continuous processes that use activated carbon in a cascade of large agitated tanks, which have been widely used to recover or concentrate precious metals in gold extraction plants In the carboninpulp process adsorption occurs after the leaching cascade section of the plant, and in the carbon2020年3月19日· Through batch adsorption and column leaching experiments, this study aimed to investigate the adsorption and transport behavior of aniline in loess and related mechanism under different hydrochemical conditions Batch experiments results indicated that aniline adsorption reached equilibrium after about 120 min, and theBatch Adsorption and Column Leaching Studies of Aniline in
2023年12月1日· Thus, while adsorption isotherms are performed after a prolonged time of interaction favouring adsorption of chemicals to soil, column leaching experiments are performed under nonequilibrium conditions, with less contact time between the chemical and the soil, which may favour the remaining of the chemical in the soil solution and thus,2019年3月5日· The experimental and theoretical study of the coadsorption and codiffusion of several gases through a microporous solid and the instantaneous (out of equilibrium) distribution of the adsorbed phases is particularly important in many fields, such as gas separation, heterogeneous catalysis, purification of confined atmospheres,Competitive Adsorption and Diffusion of Gases in a
The leaching and adsorption behaviour of gold ores @inproceedings{Rees2000TheLA, title={The leaching and adsorption behaviour of gold ores}, author={K L Rees} Evaluating a Dynamic Model for the Competitive Elution of Gold and Base Metals from Activated Carbon S P Liebenberg J Deventer2021年6月3日· To study the adsorption characteristics of CO, CO2, N2, O2, and their binarycomponents in lignite coal, reveal the influence of CO2 or N2 injection and air leakage on the desorption of CO inMolecular simulation of gases competitive adsorption in
Article history: Carbon in leach (CIL) is an important step in gold processing that involves simultaneous adsorption and Received 12 June 2015 leaching While the mechanism of leaching and adsorption are well known, the effect of different oper Revised 31 August 2015 ating and design parameters on the dynamics and performance of CIL circuit are2023年1月4日· To study the soilwater effect of red clay, a leaching test is conducted by loading red clay into a soil column and collecting the leaching waste liquid periodically for analysis of the ion content and conductivity changes in the leaching waste liquid After leaching and filtering, the soil is removed from the column and reconstituted as aStudy of Ion Adsorption and Shear Strength of Red Clay under Leaching
2023年4月15日· 1 Introduction Soil contamination by lead (Pb) and cadmium (Cd) has aroused great concern because both heavy metals present a high health hazard index (>80–100) among all toxic metals [1]Adsorption is known to control the mobility and ultimate fate of heavy metals in soils [2]Multiple heavy metals in soils may compete with2023年6月13日· In this case, the adsorption efficiency and capacity of U continuously increased as the competitive adsorption capacity of H + decreased At pH 7, the hydrolysis of UO 2 2+ further intensified In this case, more CO 2 in the atmosphere was dissolved into the solutions, increasing the concentration of CO 3 2− in the liquid phase and theCharacteristics and influencing factors of uranium adsorption by
