Sorption of radionuclides on MX-80 bentonite has been studied extensively because its high sorption capacity and low penetrability. Herein, was characterized by acid–base titration, XRD FTIR in detail. The Eu(III) from aqueous solution to investigated as a function contact time, solid content, ionic strength pH under N 2 conditions. experimental data performed with the diffuse layer model (DLM) aid FITEQL 3.1 code. site densities are 2.52×10 −4 mol/g for [≡XOH] 1.54×10 [≡YOH], acidity...

Carbon nanotubes (CNTs) have come under intense multidisciplinary study because of their unique physicochemical properties. Understanding adsorptive interactions simultaneous humic substances (HS) and radionuclides on CNTs is critical to understand the pollution assessment potential impact behavior HS radionuclides. In this paper, adsorption acid (HA) Eu(III) multi-walled carbon (MWCNTs) are studied as a function pH ionic strength. The results indicate that HA MWCNTs strongly dependent...

Sorption of Th(IV) on attapulgite as a function pH and temperature in the presence absence humic acid fulvic was studied under ambient conditions using batch technique. The results indicated that sorption strongly affected by values. enhanced at low values no significant influence observed high mainly dominated surface complexation. increased with increasing system. Enthalpy (Δ H 0 ), entropy S ) Gibbs free energy G were calculated from dependent data, spontaneous process. desorption HS...

Sorption of Eu(III) and Am(III) on attapulgite were studied as a function pH, ionic strength, the liquid-to-solid ratio (V/m), concentrations under ambient conditions using batch technique. The sorption was quickly ∼4 hours enough to achieve equilibrium. K′ values 6.57×106 g mg-1 h-1 for 6.67×106 Am(III), respectively; qe 4.46×10-7 mg/g 1.0×10-6 respectively. strongly affected by pH values, weakly dependent strength. mainly dominated surface complexation, although ion exchange also...

Abstract In recent years, China’s environmental pollution is serious, manufacturing industry has become one of the main targets government regulation. This paper uses SBM model to calculate efficiency value 29 industries from 2008 2017. The results show that overall performance regulation in high (the average 0.7806), but it shows a declining trend. also varies widely. should consider focusing on 11 with low next step improve

The Solow residual method, traditionally pivotal for calculating total factor productivity (TFP), is typically not applied to green TFP calculations due its exclusion of undesired outputs. Diverging from traditional approaches and other frontier methodologies such as Data Envelopment Analysis (DEA) Stochastic Frontier (SFA), this paper integrates outputs three types spatial spillover effects into the conventional framework, thereby creating a new spatiotemporal econometric method (STE-SRM)....

The investigation of township consumption patterns has become highly significant in order to emphasize the importance economic development and policy formulation. To attain underdeveloped areas is a way meet general criterion “rich life” under China’s Rural Revitalization strategy. primary objective this study evaluate driving forces that contribute such as Gansu Province, China, then scientifically design implement strategy for Gansu, all which are related broader interests rural...

Abstract BACKGROUND In order to improve the compatibility of polysaccharide–protein mixtures and enhance their performance, a response surface methodology was used optimize preparation conditions konjac glucomannan/casein blend gel. Moreover, effects high‐pressure processing (HPP) on gel properties structure were also investigated. RESULTS The optimal parameters temperature 60 °C, total concentration 40 g kg −1 , dietary alkali 5 . Under these conditions, experimental value hardness 38.7 g,...

The sorption of radiocaesium ions onto Na-rectorite was studied at a pH value 5.0 ± 0.2 using the batch technique under ambient conditions. effect humic acid on Cs + ion also investigated. results indicated that presence significantly enhanced rectorite. kinetic desorption from bare and HA-bound rectorite, respectively, by addition chelating resin. obtained rectorite generated reversible irreversible sites, with sites consisting least two kinds, i.e. “weak” “strong”. With increasing ageing...

Abstract Attapulgite/iron oxide magnetic (ATP/IOM) composites was prepared, and the sorption behavior of Am(III) on that studied as a function pH, ionic strength, solid-to-liquid ratio ( m / V ), contact time, concentration under ambient conditions using batch technique. The time to achieve equilibrium less than 5 h. ATP/IOM strongly affected by pH strength. Though ion exchange reaction contributed over low range mainly dominated surface complexion i.e. , outer- and/or inner-sphere...

Calculating China’s industrial total factor productivity (TFP) at the prefectural level comprehensively and accurately is not only an inevitable requirement for industrialization to enter new development stage of “improving quality efficiency”, but also a practical need TFP improvement level. Based on improved Solow residual method with general nesting spatial model embedded, this paper calculated TFPs 280 cities in China from 2003 2019, undertook detailed analysis spatiotemporal evolution...

At the first stage of Lewis, China promoted rapid development industrialization driven by huge demographic dividend. But under institutional constraint, labor force in non-agricultural industries flows back into countryside constantly. In 2004, had entered Chinese-style Lewis turning point. Under point, three has characteristics: low efficiency primary industry, overcapacity second tertiary industry. order to improve production should implement effective policies promote rural population...

The effects of pH, ionic strength and temperature on sorption Eu(III) attapulgite were investigated in the presence absence fulvic acid (FA) humic (HA). results indicated that was strongly dependent pH strength, independent temperature. In FA/HA, enhanced at < 4, decreased range 4 - 6, then increased again > 7. X-ray photoelectron spectroscopy (XPS) analysis suggested might be expressed as ?X3Eu0 ?SwOHEu3+ ?SOEu-OOC-/HA ternary Eu/HA/attapulgite system. extended absorption fine...