نتایج جستجو برای: separation area

تعداد نتایج: 700709  

Journal: :international journal of environmental research 0
m. moroni department of civil and environmental engineering, sapienza university of rome, via eudossiana, 18 – 00184, rome, italy f. la marca department of chemical engineering materials & environment, sapienza university of rome, via eudossiana, 18 – 00184, rome, italy l. cherubini department of chemical engineering materials & environment, sapienza university of rome, via eudossiana, 18 – 00184, rome, italy a. cenedese department of civil and environmental engineering, sapienza university of rome, via eudossiana, 18 – 00184, rome, italy

plastic recycling is the process of recovering scrap or waste plastics and reprocessing thematerial into useful products that sometimes differ completely in form from their original state. an importantissue in plastic recovery and recycling is that plastic waste usually contains a variety of plastics that differ intheir physical and chemical properties. separation of recovered plastics into dis...

A. Foroutan, A. K. Darban, B. Rahnama, E. Taheri-Nassaj, Y. Kianinia,

A method for producing high surface area nano-sized mesoporous alumina from inexpensive Iranian kaolin as raw material is proposed. In this method, first, kaolin was purified for purifying Kaolin, High Grade Magnetic Separation and leaching with HCl and chemical bleaching treatment by using sodium dithionite (Na 2 S 2O4 ) as reducing agent in acidic media (H 2SO 4 ) were used. Pur...

ژورنال: سلامت و محیط زیست 2015
صادقی, مهدی, فدایی, ابراهیم, مهدی نژاد, محمد هادی, کریمی, جواد,

Background and Objective: Collection and disposal of waste has an important role in public health. Isolation and separation procedures at the origin is considered as one of the most important and least costly methods of isolation and separation of waste. This study was aimed to culture and educate those involved in recycling and waste reduction in the Kalaeh City using two educational methods. ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم 1392

gol-e-gohar iron ore mine of sirjan in southern part of iran is a large open pit that operates below the groundwater table and during mining operation, dewatering is required to prevent operation processes from flooding. current operation is going on by digging wells in or out of the pit and pumping to prevent flooding. as a result of the former dewatering operation a vast deep cone of depressi...

Journal: :پژوهش های علوم و فناوری چوب و جنگل 0

walnut is a hardwood tree which covers a wide area of the plantation forest and gardens. the objective of this study was the separation and identification of compounds produced from pyrolysis of walnut wood at fixed bed reactor under an inert gas atmosphere (nitrogen) at 350 oc for 20 minutes. the separation and identification of compounds from bio-oil treated with n,o-bis (tri methyl sailil) t...

ژورنال: فیزیک زمین و فضا 2020

This research deals with assessment of geothermal potential in parts of middle Benue Trough, north-east of Nigeria. The study area lies within the Longitude 9°E – 10°E and Latitude 8°N – 9.50°N with an estimated total area of 18,150 km2. Regional/Residual separation was performed on the total magnetic intensity using polynomial fitting. The residual map was divided into 14 overlappin...

ژورنال: سلامت و محیط زیست 2020

Background and Objective: Microplastics (MPs) pollution are considered as a major growing global environmental problem in the past few decades. Dams could be an important reservoir for microplastics accumulation, therefore, in this study the presence of microplastics in sediments of Taleqan Dam and its upstream river was investigated in order to: 1) determine the local status of microplastic po...

2018
Albert E. Cervera-Padrell Sofie T. Morthensen Daniel J. Lewandowski Tommy Skovby Søren Kiil Krist V. Gernaey

Continuous hydrolysis of an active pharmaceutical ingredient intermediate, and subsequent liquid−liquid (L-L) separation of the resulting organic and aqueous phases, have been achieved using a simple PTFE tube reactor connected to a miniscale hydrophobic membrane separator. An alkoxide product, obtained in continuous mode by a Grignard reaction in THF, reacted with acidic water to produce parti...

2017
Sidratul Choudhury Emer Duffy Damian Connolly Brett Paull

This work presents the first instance of reversed-phase liquid chromatographic separation of small molecules using graphene oxide nanoparticle-modified polystyrene-divinylbenzene polymeric high internal phase emulsion (GONP PS-co-DVB polyHIPE) materials housed within a 200-μm internal diameter (i.d.) fused silica capillary. The graphene oxide nanoparticle (GONP)-modified materials were produced...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد شاهرود - دانشکده علوم پایه 1393

چکیده : دو گیاه perovskia abrotanoides karel و zeravschania aucheri در سایه تحت جریان ملایم هوا خشک شدند. اسانس گیری از گیاهان خشک شده توسط دو روش تقطیر با آب و میکرواستخراج فاز جامد در فضای فوقانی انجام گرفت و اسانس ها با استفاده ار روش کروماتوگرافی گازی- طیف سنج جرمی (gc-ms) مورد تجزیه و تحلیل قرار گرفتند. ترکیبات عمده شناسایی شده در اسانس برگ و گل و ساقه گیاه p.abrotanoides عبارتند از: ...

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