نتایج جستجو برای: adsorption efficiency

تعداد نتایج: 438104  

2009
Josef Houser Jan Růžička Marie Dvořáčková

The adsorption of Bis (2-ethylhexyl) phthalate (DEHP) on the carbon adsorbents (Chezacarb S and Chezacarb SH) and polymer adsorbent on basis of polypropylene with polyethylene (Reo Fb) was studied. Efficiency of DEHP adsorption (concentration DEHP to 10 g.L, concentration of the adsorbents 1.7 g.L) was more then 99.9 %. By the sample from groundwater was efficiency more as 99.7 % in the case of...

2012
N. BANUMATHI N. KASTHURI

The inhibition of corrosion on mild steel in 1M H2SO4 by a heterocyclic compound namely cefuroxime axetil has been studied by weight loss, potentiodynamic polarization and electrochemical impedance spectroscopy methods. The adsorption characters of the inhibitor on mild steel, free energy change and energy of activation of the inhibition process have been calculated from the results. The inhibi...

2013
Junhua Zhang Ulla Moilanen Ming Tang Liisa Viikari

UNLABELLED BACKGROUND The enzymatic hydrolysis step converting lignocellulosic materials into fermentable sugars is recognized as one of the major limiting steps in biomass-to-ethanol process due to the low efficiency of enzymes and their cost. Xylanases have been found to be important in the improvement of the hydrolysis of cellulose due to the close interaction of cellulose and xylan. In t...

The current study both synthesizes and uses four compounds of graphene oxide (GO), nitrogen doped graphene oxide (ND-GO), high nitrogen doped graphene oxide (HND-GO), and three dimensional high nitrogen doped graphene oxide (3D-HND-GO) in order to remove a model anionic dye, Congo red (CR) from wastewaters. It also compares their carbon nano-structure, with regard to removal efficiency and find...

ژورنال: سلامت و محیط زیست 2016

Background and Objectives: Phenol is a toxic and persistent substance in the environment. The aim of this study was to evaluate the performance of silica aerogel synthesized using sodium silicate in the adsorption of phenol from aqueous solutions. Material and Method: Silica aerogel was prepared by Sol-Gel process. The influence of effective variables such contact time, initial pH of the sol...

Journal: Pollution 2019

The current study both synthesizes and uses four compounds of graphene oxide (GO), nitrogen doped graphene oxide (ND-GO), high nitrogen doped graphene oxide (HND-GO), and three dimensional high nitrogen doped graphene oxide (3D-HND-GO) in order to remove a model anionic dye, Congo red (CR) from wastewaters. It also compares their carbon nano-structure, with regard to removal efficiency and find...

Journal: :physical chemistry and electrochemistry 0

nano-zno was employed for the adsorption of 4c2np from aqueous solutions in batch equilibriumexperiments to investigate its adsorption properties. the quantity of 4c2np adsorbed onto nano- znosurface was measured by uv-vis spectrophotometer. the effects of contact time, adsorbent dose, ph, andinitial concentration of 4c2np were investigated. the adsorption found to be strongly influenced by all...

2013
Paul Chen

Department of Civil and Environmental Engin Kent Ridge, Singapore 117576. E-mail: paulche † Electronic supplementary information before and aer arsenic adsorption. TE assay on the designed nanoparticles. efficiency of the ZNC with the NSC. Gr adsorption efficiency (qe). Effect of humi silicate, phosphate and nitrate on the ad sorbent. The atomic percentage data of scan XPS spectra. See DOI: 10...

ژورنال: طلوع بهداشت یزد 2013
غلامی, میترا , فرزادکیا, مهدی, قلیزاده, عبدالمجید, کرمانی, مجید,

  Background : Industrial wastewaters contain organic pollutant such as dyes, halogenated hydrocarbon, phenolic compounds and so on Rice husk is a cheap material which is new available in our country. The aim of this study is removal efficiency comparing rice husk ash performance with commercial granulated activated carbon in removal of 2-CP and 4-CP from aqueous solutions.   Methods : Experime...

2014
Yu Zhang Xiyun Cai Weina Xiong Hao Jiang Haitong Zhao Xianhai Yang Chao Li Zhiqiang Fu Jingwen Chen

Effects of pH on adsorption and removal efficiency of ionizable organic compounds (IOCs) by environmental adsorbents are an area of debate, because of its dual mediation towards adsorbents and adsorbate. Here, we probe the pH-dependent adsorption of ionizable antibiotic oxytetracycline (comprising OTCH2 (+), OTCH(±), OTC(-), and OTC(2-)) onto cyclodextrin polymers (CDPs) with the nature of mole...

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