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S.J. Park, Y.S. Jang, Pore structure and surface properties of chemically modified activated carbons for adsorption mechanism and rate of Cr(VI), J. Colloid Interface Sci., 249 (2002) 458–463. Q. Zhou, X. Jiang, Y. Guo, G. Zhang, W. Jiang, An ultrigh surface area mesoporous carbon prepared by a novel MnOtemplated method for highly ...
Modified natural zeolite ZeoCem Mn [17] with main component of clinoptilolite was used in the experiments. ZeoCem Mn was separated by colour to dark and light to create two new adsorbents, since it is assumed that the dark grains contain higher amount of MnO 2 on their surface, i. e. the adsorption capacity for Mn(II) ions will be
Ions adsorption capacity by different manganese oxide coated adsorbents. Ions Mncoated material Q max (mg/g) References As+3 Manganese oxidecoatedalumina 425 20 Cd+2 Manganese oxide modified Diatomite 21 Cu+2 Manganese oxide modified Bentonite 22 Cu+2 Manganese oxide coated zeolite 14
Arsenate adsorption from aqueous solutions onto clinoptiloliteheulandite rich tuffs modified with iron or manganese or a mixture of both iron and manganese in this work was investigated. A kinetic model was considered to describe the arsenates adsorption on each zeolitic material. The modified clinoptiloliteheulandite rich tuffs were characterized by scanning electron microscopy and Xray...
Dec 01, 2012· Langmuir isotherm is based on the monolayer adsorption of manganese ions on the surface of carbon sites and is expressed in the linear form as (3) C e q e = 1 Q 0 b + C e Q 0 where C e is the equilibrium concentration (mg/L) and q e the amount adsorbed at equilibrium (mg/g).
The adsorption of Pb(II) from aqueous solution onto raw laterite soil (LS) and manganese oxidemodified laterite soil (MnLS) was evaluated based on batch method.
Journal of hazardous materials Adsorption of Zinc(II) on diatomite and manganeseoxidemodified diatomite: a kinetic and equilibrium study. [Necla Caliskan, Ali Riza Kul, Salih Alkan, Eda Gokirmak Sogut, Ihsan Alacabey]
Naturally occurring diatomaceous earth (diatomite) has been tested as a potential sorbent for Pb(II) ions. The intrinsic exchange properties were further improved by modification with manganese oxides. Modified adsorbent (referred to as Mndiatomite) showed a higher tendency for adsorbing lead ions .
molecules Article Adsorption Properties of NanoMnO2–Biochar Composites for Copper in Aqueous Solution Li Zhou 1,2,†, Huang 2,†, Weiwen Qiu 3, Zhanxiang Sun 4, Zhongqi Liu 2 and Zhengguo Song 2,* 1 College of Land and Environment, Shenyang Agricultural University, Shenyang 110866, China; lily_621 2 AgroEnvironmental Protection Institute, Ministry of Agriculture of China ...
Mar 20, 2020· Fabrication of sustainable manganese ferrite modified biochar from vinasse for enhanced adsorption of fluoroquinolone antibiotics: Effects and mechanisms. Author links open overlay panel Yujia Xiang a 1 Xiao Yang b 1 Zhangyi Xu a Wenyong Hu c Yaoyu Zhou a b Zhonghao Wan b Yuhui Yang a Yuyi Wei a Jian Yang a Daniel Tsang b.
This paper presents the adsorption of Cu(II) from aqueous solution on modified Unye bentonite. Adsorption of Cu(II) by manganase oxide modified bentonite (MMB) sample was investigated as a ...
Diatomite modified by microemulsion (DMM) and manganese oxide (MnD) were used for the removal of chromium ion (III) from aqueous solution. The characters and performance of these two types of modified diatomite on chromium ion (III) adsorption were compared to each other. The results indicate that the chromium ion (III) sorption capacities of ...
The arsenic adsorption capacity of a manganese oxidemodified biochar composite (MBC), prepared by pyrolysis of a mixture of potassium permanganate and biochar, was investigated in red soil. Adsorption experiments using batch procedures were used to estimate the arsenic adsorption capacities of the absorbent materials.
The present study investigated the optimization of arsenic adsorption onto natural clinoptilolite (NCNa). Response surface methodology in combination with Box–Behnken design was used to optimize the parameters of the adsorption process. Solution pH, temperature, and initial arsenic concentration were chosen as the main process variables, and the amount of arsenic adsorbed was selected as ...
Kinetics and thermodynamics of the phosphine adsorption on the modified activated carbon. Frontiers of Chemical Science and Engineering 2011, 5 (2), 203208. DOI: /s. Weihua Zou, Lei Zhao, Runping Han. Adsorption characteristics of uranyl ions by manganese oxide coated sand in batch mode.
The adsorption of NO molecules on Mndoped CeO2 (111) surfaces for NO oxidation has been studied by employing the periodic density functional theory plus U (DFT+U) method. Through our calculations, it is demonstrated how Mndoped CeO2 with superior NO oxidation activity benefits from the high mobility of the oxygen near the Mn cations. On unreduced Mndoped CeO2 (111) surfaces, the NO molecule ...
May 10, 2016· The modified surface of granulated activated carbon increased the adsorption capacity for adsorption of Cu 2 + and Cd 2 + greatly (Fan and Anderson, 2005). Puppa performed the adsorption of cations Cd 2 +, Zn 2 + and Cu 2 + on amorphous manganese oxides and synthetic birnessite (MnO 2) at pH 4 and The both adsorbents were found to be ...
Both raw and Mn2+modified bentonite clay have high pHpzc indicative of clay dominated by aluminosilicate materials and manganese oxides. Modification of the raw bentonite clay with Mn2+ increases the pHpzc and which extends the pH range for adsorption of .
Initial investigations established the effectiveness of manganese oxidesmodified diatomite (MOMD) to remove basic and reactive dyes from aqueous solution. The adsorption capacity of MOMD for methylene blue (), hydrolysed reactive black (RB) and hydrolysed reactive yellow (RY) was 320, 419, and 204mg/g, respectively.
using the zinc ion (Zn2+) adsorption method. Here, g of manganese oxidesmodified diatomite were mixed with 25 mL of Zn2+ solution (2 M ammonium chloride [NH4C1], zinc chloride [ZnCl2]) in a 100 mL flask. The mixture was agitated for 24 h and then allowed to stand overnight. The supernatant solution was analyzed for Zn2+ using atomic ...
In this study, manganese dioxide was evenly distributed on the surface of activated carbon (AC), and the porous structure of AC and the surface functional groups of manganese diox
Oct 01, 2001· The modified diatomite will be referred to by Mndiatomite. The amount of Mn(IV) oxides deposited on the diatomite was determined by dissolving the oxides in 4 M hydrochloric acid at 40°C in a hot water bath. Manganese ions were determined by atomic absorption. Characterisation of modified .
Sep 13, 2019· 1. J Hazard Mater. 2019 Sep 13;384:121229. doi: / [Epub ead of print] Adsorption behavior and mechanism of arsenic on mesoporous silica modified by ironmanganese binary oxide (FeMnOx/SBA15) from aqueous systems.
Dec 12, 2019· 1. Sci Total Environ. 2019 Dec 12;709:136079. doi: / [Epub ead of print] Fabrication of sustainable manganese ferrite modified biochar from vinasse for enhanced adsorption of fluoroquinolone antibiotics: Effects and mechanisms.
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