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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
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 5.5. The both adsorbents were found to be ...
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).
May 26, 2007· Adsorption behavior and removal mechanism of arsenic on graphene modified by iron–manganese binary oxide (FeMnO x /RGO) from aqueous solutions. RSC Advances 2015, 5 (83), 67951-67961. DOI: 10.1039/C5RA11601E.
molecules Article Adsorption Properties of Nano-MnO2–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@163 2 Agro-Environmental Protection Institute, Ministry of Agriculture of China ...
Nov 01, 2015· The arsenic adsorption capacity of a manganese oxide-modified 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.
Adsorption Behaviour of Modified Zeolite as Novel Adsorbents for Fluoride Removal from Drinking Water: Surface Phenomena, Kinetics ... removal of manganese by manganese oxide coated zeolite [41], removal of strontium and potassium ions by synthetic zeolite .
The present study investigated the optimization of arsenic adsorption onto natural clinoptilolite (NC-Na). 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 ...
Initial investigations established the effectiveness of manganese oxides-modified 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.
May 01, 2002· Adsorption studies of strontium on manganese dioxide from aqueous solutions. The International Journal of Applied Radiation and Isotopes 1981, 32 (12), 899-904. DOI: 10.1016/0020-708X(81)90076-4. Syed Moosa Ha, Mudassar Ahmed Qureshi. Adsorption studies of cobalt(II) on manganese dioxide from aqueous solutions.
Feb 16, 2006· Kinetics and thermodynamics of the phosphine adsorption on the modified activated carbon. Frontiers of Chemical Science and Engineering 2011, 5 (2), 203-208. DOI: 10.1007/s11705-010-0571-0. Weihua Zou, Lei Zhao, Runping Han. Adsorption characteristics of uranyl ions by manganese oxide coated sand in batch mode.
The adsorption of Pb(II) from aqueous solution onto raw laterite soil (LS) and manganese oxide-modified laterite soil (Mn-LS) was evaluated based on batch method.
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 ultra-high surface area mesoporous carbon prepared by a novel MnO-templated 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
The arsenic adsorption capacity of a manganese oxide-modified 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.
Oct 01, 2001· The modified diatomite will be referred to by Mn-diatomite. 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 .
A novel organic-modified aluminum-manganese bimetal oxide (OABO) adsorbent was fabricated to adsorb nitrate and phosphate from wastewater and reduce eutrophication risk. Several techniques were applied to investigate the surface characteristics of OABO. The characterization results showed that OABO has multiple functional groups, including hydroxyl groups, impregnated sulfate ions, grafted ...
While modified the diatomite with sixteen alkyl trimethylamine bromide solution, manganese dioxide and calcium carbonate, the effects of diatomite dosage, adsorption time and initial pH value on ...
The adsorption of NO molecules on Mn-doped 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 Mn-doped CeO2 with superior NO oxidation activity benefits from the high mobility of the oxygen near the Mn cations. On unreduced Mn-doped CeO2 (111) surfaces, the NO molecule ...
Arsenate adsorption from aqueous solutions onto clinoptilolite-heulandite 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 clinoptilolite-heulandite rich tuffs were characterized by scanning electron microscopy and X-ray...
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 ...
Ions adsorption capacity by different manganese oxide coated adsorbents. Ions Mn-coated material Q max (mg/g) References As+3 Manganese oxide-coated-alumina 425 20 Cd+2 Manganese oxide modified Diatomite 26.6 21 Cu+2 Manganese oxide modified Bentonite 105.4 22 Cu+2 Manganese oxide coated zeolite 9.9 14
Apr 30, 2009· Arsenate adsorption from aqueous solutions onto clinoptilolite-heulandite 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 .
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 ...
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