نتایج جستجو برای: removal efficiency

تعداد نتایج: 518143  

Journal: :Antimicrobial Agents and Chemotherapy 2016

Journal: :مجله انسان، محیط زیست و ارتقاء سلامت 0
seyedeh parvin moussavi school of public health, international branch of shahid sadoughi university of medical sciences and health services, yazd, iran. mehran mohammadian fazli department of environmental health engineering. school of public health, zanjan university of medical sciences, zanjan, iran.

background; dyes can cause many problems in environment. therefore, removal of these contaminants before discharging wastewater to environment can reduce the environmental hazards. adsorption is one of the usual processes for decolorizing from wastewater. nanotubes are new adsorbents that can adsorb different compounds. this work aimed to investigate acid violet 17 dye removal by adsorption usi...

راننده کلانکش, لاله, لولوئ, مهشید, ملکوتیان, محمد,

Background and purpose: Lead is a toxic compound which causes variety of health problems in water environments. This study investigated the efficiency of Tio2/Sio2 hybrid nanoparticles in removal of lead from paint industry effluents. Materials and methods: This experimental study was done in samples of synthetic and real wastewater from Binalood paint factory within six months. The chemical q...

2015
Ilhan USTA Hanefi Gezer

108 Reliability estimation in Pareto-I distribution based on progressively type II censored sample with binomial removals Ilhan USTA 1, *, Hanefi Gezer 2 1Doctor of Philosophy, Associate Professor, Department of Statistics, Faculty of Science, Anadolu University, Eskisehir, Turkey 2Master of Statistics, Faculty of Science, Anadolu University, Eskisehir, Turkey Abstract: In this study, we deal w...

2013
Bander Al-Zahrani

The paper deals with the estimation problem for the generalized Pareto distribution based on progressive type-II censoring with random removals. The number of components removed at each failure time is assumed to follow a binomial distribution. Maximum likelihood estimators and the asymptotic variance-covariance matrix of the estimates are obtained. Finally, a numerical example is given to illu...

2015
F. Molnár Noemi Derzsy Boleslaw K. Szymanski Gyorgy Korniss

We study the vulnerability of dominating sets against random and targeted node removals in complex networks. While small, cost-efficient dominating sets play a significant role in controllability and observability of these networks, a fixed and intact network structure is always implicitly assumed. We find that cost-efficiency of dominating sets optimized for small size alone comes at a price o...

Journal: :Environmental science & technology 2008
Thasan Raju Sang Joon Chung Il Shik Moon

The objective of this work is to develop a sustainable process for simultaneous removal of waste gases such as NO, NO2, and SO2 by an electrochemically generated Ag(I)/Ag(II) redox mediator system. High removal efficiency was achieved for NO and SO2 by the wet scrubbing method at room temperature and atmospheric pressure. This removal is achieved through oxidation and absorption by contacting t...

Behzad Jamshidi, Fatemeh Anvari, Mahboobeh Dehvari, Mohammad Hassan Ehrampoush, Mohammad Taghi Ghaneian, Monireh Kheirkhah,

Introduction: Natural organic matters (NOMs) existing in water resources led to various problems such as formation of disinfectant by-products (DBPs). Humic matters like humic acid (HA) are component of NOMs that should be removed from water. Advanced oxidation process (AOPs) is one of the NOMs removal methods. The aim of this study was to survey the degradation of humic acid by electron beam i...

Esmail Ghahramani Mansur Zarrabi, Mostafa Alizadeh Sara Hashemi,

In this study, removal of methylene blue by electro-coagulation method using aluminum and iron electrodes was investigated. The influence of the operating parameters such as contact time, current density, anode type, inter-electrodes distance, initial and final pH and energy consumption rate was determined. Dye removal was increased with increases in solution pH, current density and c...

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