Synthesis of Metal Oxides Nanoparticles by Basification of Acid-Leachate of Calcined Kaolin
Iraj
Mesgarzadeh
نویسنده مسئول، دانشجوی دکتر شیمی معدنی، دانشکده شیمی، دانشگاه علم و صنعت ایران
author
Ali Reza
Akbarzadeh
Department of Chemistry, Iran University of Science and Technology, Tehran, 16846_13114, Iran
author
Rahmatallah
Rahimi
استاد تمام، دانشکده شیمی، دانشگاه علم و صنعت ایران
author
text
article
2016
per
Through the study, a method is presented for producing nano-sized metal oxides from Gonabad clay minerals as raw material. In this method the calcined fine powdered clay which was created by the crushing and grinding, further leached by sulfuric acid in different periods of time. Chemical compositions of the resulting clay were determined by X-ray fluorescence (XRF) technique before and after treatment with acid. Metal (hydr) oxides, especially iron oxides, obtained from acid-leachate were precipitated in present of different volumes of sodium hydroxide solution. Finally, powders of nano-sized metal particles, obtained after calcination were used to characterize by field emission scanning electron microscopy (FE-SEM) equipped with energy-dispersive X-ray (EDX) analysis. It is concluded that chemical composition of precipitates is prone to change during basification. The survey was made in addition to the other experiments which were performed to synthesize mesoporous silica and nano silica from the kaolin deposit. The so-obtained metal oxide nanoparticles are likely prone to eliminating water contaminants.
Journal of Environmental Science Studies
مرکز فناوری های پایش آلودگی هوا و آب و سامانه های انرژی
2588-6851
1
v.
2
no.
2016
11
17
https://www.jess.ir/article_47083_da58ccba35466e9747ec1e4df8eb023a.pdf
Shale samples identification and Prefeasibility Studies of Kuh Kamar Sefid Shale Deposit in Arianshahr
Mohammadamin
Zareedarmian
کارشناس ارشد مهندسی معدن دانشگاه بیرجند
author
text
article
2016
per
The results of a Prefeasibility study may be the first information of the final project observed by decision makers and investors of large mining companies. Prefeasibility studies have been changed to a real decision point. For these reasons, Prefeasibility studies should be prepared carefully by experienced people and their results should be eligible. The shale is some fine grained sedimentary rock consisting mainly of clay or mud. It can be stated, due to conclusions and results of activities carried out for the projects, sampling through various steps including the analysis of major oxides, laboratory baking and volume baking of excavation in the region showed the possibility of production of bricks from reserves in the region. In this regard, the continuation of operations and explanation of services of the exploration project such as the preparation of performed excavations profile with proper and systematic sampling of excavations have shown the results with relative grades and the economic deposit.
Journal of Environmental Science Studies
مرکز فناوری های پایش آلودگی هوا و آب و سامانه های انرژی
2588-6851
1
v.
2
no.
2016
19
24
https://www.jess.ir/article_47085_c353124351a03501f831ec2968847d6d.pdf
Climate Change Analysis and Its’ Impacts in Qom Province, Iran
Hasan
Darabi
نویسنده مسئول، استادیار گروه مهندسی طراحی محیط زیست، دانشکده محیط زیست، دانشگاه تهران
author
Abbas
Jafari
دانشجوی کارشناسی ارشد مهندسی محیط زیست، دانشکده محیط زیست، دانشگاه تهران
author
Kimia
Akhavan Farshchi
دانشجوی کارشناسی ارشد مهندسی محیط زیست، دانشکده محیط زیست، دانشگاه تهران
author
text
article
2016
per
Qom as one of the provinces with the lowest amount of rainfall in Iran, is facing adverse effects of growing population, developing industrial and agriculture activities along with rainfall reduction, temperature and wind increase and unbridle exploitation of water resources over recent past years. Therefore, it is necessary to analyze the climatic variable factors trend to be considered in managing, planning and proper development of the province. The climate change is the main challenge in area. To that end, Mann-Kendall test has been used to process a few climatic variables from 1989-2014 in the area. This suggests average minimum and average annual temperature have experienced dramatic change and have positive significant variability at 99% reliability, but average annual rainfall shows no significant trend. Average annual relative humidity fluctuates wildly and in 2010, after a sudden change, follows a noticeably upward trend at 95% reliability. Average wind speed has had a rising trend since 2001, but no sudden change occurred until 2013. Almost all noticeable upward trends and sudden climatic changes happened over late four years of research. Intensive rainfalls, water/wind erosion, desertification, and increase in the intensified droughts and decline in water resources as well groundwater level and quality are among adverse effects of climate change.
Journal of Environmental Science Studies
مرکز فناوری های پایش آلودگی هوا و آب و سامانه های انرژی
2588-6851
1
v.
2
no.
2016
25
40
https://www.jess.ir/article_47108_ac885468c36c6eb4776eee994a491ab8.pdf
Urban agriculture with public participation approach (Case study: Sayyed Jamaleddin Asadabadi's campus).
Sajad
Shamshri
Instructor of Sayyed Jamaleddin Asadabadi University, Hamadan, Iran,
author
text
article
2016
per
Urban Agriculture Park as one of executive ideas are applicable to new type of parks in the city development. In addition to bring nature to urban spaces and create recreational space, a kind of social relationships and the economy will experience by citizens. Asadabad city is one of the cities in the Hamadan province that suffers from a lack of green and various space. So design and implementation of various spaces with the definition of new applications in this town is strongly felt. For this purpose, the idea of urban agricultural park was proposed. Given that public participation and training to learn about planting and harvesting will be the most important elements in this plan we decided to select space western area of sayyed jamaleddin Asadabadi University. By converting these lands to agricultural park, provide place for a practical course for agricultural students. Also, training agricultural subjects to the people, interaction between Academic community and people in this park will be made. So, after the definition of urban agriculture, “community garden" as a model of urban agriculture, was selected for implementation. By studying successful examples of the community garden in the world, physical plan and land use plans be prepared. Finally, with developing aims for designing and organizing, these studies are made in form of a strategic plan.
Journal of Environmental Science Studies
مرکز فناوری های پایش آلودگی هوا و آب و سامانه های انرژی
2588-6851
1
v.
2
no.
2016
41
50
https://www.jess.ir/article_47110_adb18b25644f1aed672095b5547e6add.pdf
Evaluation of Environmental and Sustainable Development of Four Pavements in Iran by Four Method of Multi-Criteria Analysis
alireza
cheraghi
کارشناسی ارشد مهندسی محیط زیست، دانشکده محیط زیست، دانشگاه تهران
author
faezeh
borhani
Faculty of Environment, University of Tehran, Tehran, Iran
author
text
article
2016
per
The urban environment is one of the foundations of life in cities and urban development with ignoring the urban environment, causes the spread environmental hazards. Sustainable development is a comprehensive solution for preserving environmental resources of cities. Pavement is one of the major of urbanization that if it not done in line of sustainable development will cause environmental problems. The study trying to evaluate of environmental and sustainable development of different methods of pavement by using some multi-criteria analysis techniques.
Reducing air pollution during the production and operation of pavement, reduce the waste of water resources and its management and waste reduction of energy resources and recycling waste in the pavements were studied in this research to evaluate pavements construction. Results of the study focused on the optimal method of pavement among the global methods (Bituminous asphalt, Porous asphalt, Roller compressed concrete or RCC, Foamed concrete). Multi-criteria analysis methods are weighted sum, Adaptive planning, TOPSIS and Ordered weighted averaging operation. Research results show that in terms of sustainable development and environment of urban, foam concrete is a green pavement and the best way of methods have been proposed.
Journal of Environmental Science Studies
مرکز فناوری های پایش آلودگی هوا و آب و سامانه های انرژی
2588-6851
1
v.
2
no.
2016
51
62
https://www.jess.ir/article_47113_ccde717f9821c52c89e937a2061f2d6a.pdf
Application of DRASTIC Model for Groundwater Vulnerability Assessment of the Ghaen Aquifer
Elaheh
Sadatipoor
, MSc Graduated of Environmental Sciences, Graduate Faculty of Environment, University of Tehran
author
Roohollah
Noori
استادیار دانشکده محیط زیست دانشگاه تهران
author
Akbar
Baghvand
Associate Professor, Graduate Faculty of Environment, University of Tehran
author
Saman
Javadi Pirbazari
Department of Irrigation and Drainage, Aburaihan Campus, University of Tehran, Iran
author
Hamid
Kardan Moghaddam
PhD student, Department of Irrigation and Drainage, Aburaihan Campus, University of Tehran
author
text
article
2016
per
Journal of Environmental Science Studies
مرکز فناوری های پایش آلودگی هوا و آب و سامانه های انرژی
2588-6851
1
v.
2
no.
2016
63
71
https://www.jess.ir/article_47120_dbfc0829cd9f3f17c7a9d4803f4bc67e.pdf