نتایج جستجو برای: anionic collector

تعداد نتایج: 18014  

2017
Kaile Zhao Wu Yan Xiaohui Wang Guohua Gu Jie Deng Xiong Zhou Bo Hui

In this work, the dispersive effect of low molecular weight sodium polyacrylate (PAAS) on serpentine, and its dispersion mechanism were systematically investigated through zeta potential measurements, micro and batch flotation as well as adsorption tests. At pH 5, where flotation of iron sulphide was routinely performed, pyrite and serpentine minerals were oppositely charged, and therefore they...

Journal: :Minerals 2023

The mechanism of anionic/cationic combination collector ST-8 for the efficient separation spodumene and feldspar was investigated by flotation tests, surface tension measurements, zeta potential measurements infrared spectroscopy analysis. results indicated that when optimum molar ratio sodium oleate dodecylamine 6:1–10:1 pH = 8.5, recovery reached a maximum 80% about 24.5%. Zeta showed negativ...

Journal: :Environmental science & technology 2010
Elizabeth J Bishop Daniel E Fowler Joanna M Skluzacek Elizabeth Seibel Thomas E Mallouk

The transport of microscale carbonyl iron powder suspensions modified with anionic homopolymers was studied in water-saturated sand columns containing well-dispersed hydrophobic sand grains. Sand grains functionalized with hexadecyltrimethoxysilane were coated with a eutectic mixture of dichlorobenzenes that was solid at -10 °C and was mixed by grinding with unmodified sand grains. The dichloro...

Journal: :journal of agricultural science and technology 2012
h. mortezapour b. ghobadian m. h. khoshtaghaza s. minaee

in this paper, the performance evaluation of a two-way hybrid photovoltaic/thermal (pv/t) solar collector was analytically and experimentally carried out. mathematical expressions for operating parameters in glass to glass and glass to tedlar pv/t solar collectors were developed and experimentally validated by a glass to tedlar pv/t solar collector system. also the influence of air flow rate on...

Journal: :transport phenomena in nano and micro scales 0
a.r. noghrehabadi department of mechanical engineering, shahid chamran university, ahvaz, i. r.iran e. hajidavaloo department of mechanical engineering, shahid chamran university, ahvaz, i. r.iran m. moravej department of mechanical engineering, shahid chamran university, ahvaz, i. r.iran

one of the effective methods to improve the thermal efficiency of solar collectors is using nanofluids as the coolant. the present study experimentally investigated the effect of sio2/water nanofluid with 1% mass fraction on the performance of a symmetric collector, i.e. conical solar collector. the conical solar collector with 1 m2 area and normal to the earth was tested in ahvaz, a city in th...

The Sangan processing plant consists of four consecutive low-intensity magnetic separation steps with the same magnetic field intensity of 1300 Gauss for upgradation of iron ore. Hence, the iron ore minerals with lower magnetic susceptibility or interlocked with gangue minerals have no opportunity for upgradation, and proceed to the tailing dam. Flotation is a powerful technique for upgradation...

2012
Soo Yong Lim Chuan Chin Pu Yi Hong Liew

This paper attempts to analyze the propagation characteristics of radio signal inside a partially open drain environment using an empirical approach. The proposed research topic concerns a unique situation in several Asian countries because the drainage systems in these countries differ notably from those in the US and Europe in that the former are partially open on the top while the latter are...

1986
Harel Paz David F. Bacon Elliot K. Kolodner Erez Petrank V. T. Rajan

A reference counting garbage collector cannot reclaim unreachable cyclic structures of objects. Therefore, reference counting collectors either use a backup tracing collector seldom, or employ a cycle collector to reclaim cyclic structures. Recently, the first on-the-fly cycle collector, that may run concurrently with program threads, was presented by Bacon and Rajan [3]. This demonstrated the ...

Journal: :journal of heat and mass transfer research 0
aminreza noghrehabadi shahid chamran university of ahvaz, faculty of engineering, department of mechanical engineering ebrahim hajidavaloo shahid chamran university of ahvaz, faculty of engineering, department of mechanical engineering mojtaba moravej azad street . no#35 behbahan, iran

the shape of a solar collector is an important factor in solar-to-thermal energy conversion. conical shape is one of the stationary and symmetric shapes that can be employed as a solar water heater. flow rate of working fluid on the solar collector has an important effect on the efficiency of the collector. the present study is an experimentally investigated of the performance of the solar coni...

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