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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
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 .
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.
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.
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 ...
This paper researched the adsorption properties of modified Manganese sand to the high content of Manganese in groundwater, the adsorption effect of modified Manganese sand were studied by the single factor such as adsorbent dosage, time, temperature and pH, through orthogonal experiment, the best absorption condition was determined. The results show that: the absorbed ratio of the modified ...
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
Nov 01, 2015· 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 ...
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 .
May 01, 2002· Adsorption studies of strontium on manganese dioxide from aqueous solutions. The International Journal of Applied Radiation and Isotopes 1981, 32 (12), 899904. DOI: /X(81)900764. Syed Moosa Ha, Mudassar med Qureshi. Adsorption studies of cobalt(II) on manganese dioxide from aqueous solutions.
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 ...
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 ...
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.
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 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 ...
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.
A novel organicmodified aluminummanganese 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 ...
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), . DOI: /C5RA11601E.
Feb 16, 2006· 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.
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 ...
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]
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