نتایج جستجو برای: temkin

تعداد نتایج: 571  

2014
W. Yu X. Ding S. Xue S. Li X. Liao R. Wang

In this study, poultry manure compost and organic fertilizer were added to soils derived from basalt, granite, and river alluvial deposits for use as soil parent materials. Following incubation periods of 30 or 60 days at 25 °C, the physical and chemical properties and adsorption characteristics of the soils were studied. The results indicated that the application of poultry manure compost or o...

2016
Abideen Idowu Adeogun Ramesh Babu Balakrishnan

Electrocoagulation (EC) was used for the removal of anthraquinone dye, Alizarin Red S (ARS) from aqueous solution. The process was carried out in a batch electrochemical cell with Al electrodes in a monopolar connection. The effects of some important parameters such as current density, pH, temperature and initial dye concentration, on the process were investigated. Equilibrium was attained afte...

2014
Nnaemeka J. N. Nnaji Nelson O. Obi-Egbedi Chukwuma O. B. Okoye

Cashew nut testa tannin [CASTAN] has been found to inhibit the corrosion of aluminium in hydrochloric acid solutions using gravimetric, thermometric and UV/visible spectrophotometric techniques. CASTAN inhibition was by adsorption on aluminium following Temkin isotherm in 0.1 M HCl and Langmuir isotherm in 0.5 M and 2.0 M HCl at 303 Kelvin. Physical adsorption on aluminium has been proposed in ...

2015
R. SELVA

The effect of marine algae Sargassum wightii extract on corrosion inhibition of brass in phosphoric acid was investigated by weight-loss method, potentiodynamic polarization and electrochemical impedance spectroscopy studies. The inhibition efficiency is found to increase with increasing concentration of extract and decreases with rise in temperature. The inhibitive effect could be attributed t...

2015
Muhammad Tahir Abdulrahman Ali Alazba Muhammad Shafiq

The studies of the kinetics and isotherms adsorption of the Reactive Black 5 (RB5) onto bentonite clay were explored in a batch study in a laboratory. The maximum RB5 adsorption conditions of bentonite clay were optimized such as shaking speed (100 rpm), temperature (323 K), pH (10), contact time (40 min), initial dye concentration (170 mg·L−1), and particle size (177 μm). The adsorbent surface...

Journal: :Fen ve mühendislik bilimleri dergisi 2022

Bu çalışmada, sulu çözeltilerden Cu2+ iyonlarını uzaklaştırmak amacıyla atık portakal kabuğu (APK) değerlendirildi. Portakal kabuğunun karakterizasyonu, yüzey morfolojisi için taramalı elektron mikroskobu-enerji dağılım spektroskopisi (SEM-EDS) ve fonksiyonel grupları Fourier dönüşümü kızılötesi (FT-IR) ile incelendi. Farklı sıcaklıklarda bulunan kinetik değerler yalancı birinci derece, ikinci ...

Journal: :Baghdad Science Journal 2022

The current research includes the adsorption of Rhodmine-B Dye on surface Citrus Leaves using technique UV. Vis spectrophotometer to determine data quantitative at various contact time, ionic strength, PH and temperature conditions. As a function temperatures 25,35,45,55 0C, dsorption phenomenon was examined, results showed that Rhodamine-B leaves rose with increasing (endothermic process). Usi...

Journal: : 2022

The need to develop effective technology for the treatment of liquid effluent dye-intensive industries such as textile, rubber, paint, and printing is synonymous with save life-threatening risks posed by these carcinogenic mutagenic pollutants on human aquatic lives. Isotherms adsorption crystal violet (CV) activated carbon (AC) synthesized from rice husk are presented herewith elucidate mechan...

M. BAGHERNEJAD S. S. HASHEMI

Zinc (Zn) availability and mobility in soils is controlled by its interaction with the soil matrix and amendments. Contradicting evidence has been reported for factors influencing Zn behavior in soils. The aim of this study was to investigate the Zn sorption in selected acid, calcareous and gypsiferous soils with different background electrolytes (Na+, K+ and H2PO4, NO3 and Cl backgrounds). Iso...

2007
Michael Borchard Richard J. Temkin Richard Temkin

High Power microwave vacuum windows are an essential component in developing 1 MW/CW gyrotrons. The thesis focuses on thermal and mechanical analysis of three different microwave window designs. These include the present double disk window, a distributed window being developed by General Atomics and a single-disk diamond window design. The output microwave window is currently the limiting facto...

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