نتایج جستجو برای: effect distillation med are used commercially
تعداد نتایج: 6985151 فیلتر نتایج به سال:
abstract ion selective electrodes (ises) are electrochemical sensors that respond selectivity to the activity of ionic species. an ion-selective electrode is an electrochemical device that uses a thin selective membrane or film as the recognition element, and is an electrochemical half-cell equivalent to other half-cells of the zeroth (inert metal in a redox electrolyte). in common methods o...
Acetic acid is the most widely used aliphatic carbonic acid used as a reaction partner during the manufacture of acetic acid esters, or employed as a solvent in the production of cellulose acetate. Although acetic acid and water do not form any azeotrope, use of simple distillation to separate these two components is still not practical due to its high energy consumption rate. In this work, som...
The pressing problems of water scarcity in many parts the planet make desalination one technological solutions for guaranteeing fresh supply. However, processes require high energy consumption, mainly provided by fossil fuels. integration renewable sources into is a promising option decarbonizing sector. As most water-scarce regions with access to seawater frequently have solar irradiation leve...
Reactive distillation processes couple chemical reactions and physical separations into a single unit operation. The ethyl acetate production by esterification reaction is equilibrium limited and is suitable to be carried out in a distillation column. In the present work, a reactive distillation column for the production of ethyl acetate is simulated using Aspen Plus. The component compositions...
Seawater desalination plants have been utilized to supply fresh water to the State of Kuwait since the early 50’s. In spite of the fact that there are several types of desalination technology that can be used more efficiently and economically, one type of desalination technology, namely multi-stage flash (MSF), has been used extensively in Kuwait. This work is an attempt to identify the most su...
asymmetric polyethersulfone (pes) microfiltration flat sheet membranes were composed by the phase inversion method (pim) and were used as supports. composite membranes were fabricated by coating silicone rubber as selective layer. effect of different concentrations of pes and pdms and different solvent such as nmp, dmf and dms effects as pes solvents and support thickness and different coagulat...
the aim of this paper is eliminating cr(vi) by natural hap. hap is a inexpensive material which is used from bovine critical bone ash in order to remove heavy metal ions like cr(vi). some experiments in different ph are performed (ph=2,3,7). maximum adsorption was appeared at ph=2, dosage=0.3 gr, c0=10 mg/l. cr(vi) removal depends on ph value and initial amount of cr(vi) result of experiments w...
The design of new dual-purpose thermal desalination plants is a combinatory problem because the optimal process configuration strongly depends on desired targets electricity and freshwater. This paper proposes mathematical model for selecting structure, operating conditions, sizes all system components plants. Electricity supposed to be generated by combined-cycle heat power plant (CCHPP) with ...
Cellulosic ethanol (CE) can not only be produced from a nonedible, cheap, and abundant lignocellulose feedstock but also reduce carbon footprint significantly compared to starch ethanol. Despite great stimulation worldwide, CE production has yet commercialized because of the complexity lignocellulose. Therefore, intensive research development are needed improve technologies. In this study, cost...
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