نتایج جستجو برای: 3و po43

تعداد نتایج: 630  

Journal: :Chemistry and Chemical Technology 2022

As a part of preliminary studies, the possibility quantitative oxidation aldehydes to carboxylic acids and their determination by isocratic ion chromatography with conductometric detection has been tested. A methodology for simultaneous separation inorganic anions (F-, Cl-, NO2-, Br-, NO3-, PO43-, SO42-) (formate, acetate oxalate) using conductivity have developed validated. Six anion-exchange ...

Journal: :Journal of Cleaner Production 2021

In the context of climate change, diet is a key driver environmental impacts. Previous research has emphasized benefit increasing consumption fishery and aquaculture products (FAPs) in Europe. However, proportion FAPs consumer diets could also lead to transfer damage from earth sea. It thus important evaluate impacts on marine ecosystems globally. For that purpose, an original database characte...

2017
Shiying He Linghao Zhong Jingjing Duan Yanfang Feng Bei Yang Linzhang Yang

It has been reported that bacteria-mediated degradation of contaminants is a practical and innocuous wastewater treatment. In addition, iron oxide nanoparticles (NP) are wastewater remediation agents with great potentials due to their strong adsorption capacity, chemical inertness and superparamagnetism. Therefore, a combination of NPs and microbes could produce a very desirable alternative to ...

2013
Gulshan Kumar Sharma Shakeel Ahmad Khan

Phycoremediation is the process of employing algae for removing excess nutrient load from wastewater and subsequently diminish the pollution load. It is an alternative technology of treating sewage wastewater compare to conventional treatment process in economical and sustainable way. Therefore, in the present investigation we had made an effort to phycoremediate the IARI’s sewage wastewater wi...

2017
Martha Schamel Jake E. Barralet Jürgen Groll Uwe Gbureck

BACKGROUND In vitro cell testing of degradable bioceramics such as brushite or monetite is often challenging due to the ion release into or adsorption from the culture medium. These ionic changes are then mostly responsible for cell proliferation and activity, which prohibits the investigation of effects originating from surface topography or further material modifications. METHODS Here, we a...

2018
Daniel G. Strawn

Arsenic is a non-essential element that poses risks in many environments, including soil, groundwater, and surface water. Insights into the environmental biogeochemistry of As can be gained by comparing As and P reaction processes. Arsenic and P are chemical analogues, and it is proposed that they have similar chemical behaviors in environmental systems. However some chemical properties of As a...

2013
Vaishali Sahu

dity increases the need to chlorinate drinking water, which, in -products that have been shown to increase the risk of cancer. The ry agencies based on issues of and aerated/unaerated mass fractions are identified reasingly being seen as tand the relevant factors which differentiate competing to recover nutrients as process, sewage treatment plant Phosphorus: Total phosphorus (TP) in domestic w...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه زنجان 1390

سه سری نانوکامپوزیت مخلوط اکسید fe و si شامل fe2o3-sio2 با fe % wt 2 (1)، fe2o3-sio2 با fe % wt 35/4 (2) و fe2o3-sio2 با fe % wt 6/9 (3) با روش سل- ژل تهیه شدند و توسط آنالیز عنصری، طیف بینی ft-ir، xrd، bet و sem شناسایی شدند. این نانوکامپوزیت ها در اکسایش آلکن ها و الکل ها توسط هیدروژن پرکسید به عنوان اکسنده فعال بودند. اکسایش آلکن های خطی، حلقوی و آریل آلکن ها بررسی شد و درصد تبدیل در گستره ی...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان همدان - دانشکده علوم 1390

در این پژوهش با استفاده از روش¬های اسپکتروفوتومتری uv-vis و اسپکتروفلوریمتری برای محاسبه غلظت ستیل تری متیل آمونیوم (ctab) در حضور سایر سورفکتنت¬ها محاسبه شد. اساس کار به این صورت بود که افزایش سورفکتنت کاتیونی ctab در حضور sds و tx-100 موجب تغییر شدت نشر فلوئورسانس رنگ نمک دو سدیم 4?4-بیس {[4-آنیلینو-6-بیس (2-هیدروکسی اتیل)آمینو-1و 3و 5-تری آزین-2-ایل]آمینو}استیلبن-2و 2- دی سولفونیک اسید (tria...

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