نتایج جستجو برای: reduction of pollutant

تعداد نتایج: 21188769  

2013
Zeyuan Qiu

Nonpoint source pollution control and stormwater management are two objectives in managing mixed land use watersheds like those in New Jersey. Various best management practices (BMPs) have been developed and implemented to achieve both objectives. This study assesses the cost-effectiveness of selected BMPs for agricultural nonpoint source pollution control and stormwater management in the Nesha...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی خواجه نصیرالدین طوسی - دانشکده علوم 1394

در ابتدا یک سری همولوگ از منگنز پورفیرین های کلردار شده mntppclx (x = 2, 4, 6 or 8) سنتز و شناسایی شده و فعالیت کاتالیزوری آنها در اکسایش سیکلواکتن، سیکلوهگزن و متیل فنیل سولفید با اکسنده تترا-n-بوتیل آمونیوم پریدات مورد مطالعه قرار گرفت.در ادامه کمپلکس منگنز از مزو-تتراکیس(پارا-هیدروکسی فنیل)پورفیرین بر روی نانولوله های کربنی چنددیواره تثبیت شده و مورد شناسایی قرار گرفت. فعالیت کاتالیزوری این ...

Journal: :journal of applied research in water and wastewater 2014
seyed masoud tayefeh cheraghali amin sarang mohammad ali zahed hossein vahidi moazameh akbari

one of the main problems in the quality control of rivers is the high control cost imposed upon pollutant units. the cooperative policy approach in the treatment process between two or more pollutant units is a new and economic perspective in the environmental management of catchment basins. origins of large amounts pollutants which require a high cost to control pollution are trying to start p...

In this research, a new effective photocatalyst was prepared by supporting ZnO on a Todorokite (TD). This catalyst was characterized by employing scanning electron microscopy (SEM-EDX) and X-Ray Diffraction (XRD) patterns. The optical properties of the samples were measured by diffuse reflectance spectroscopy (DRS). The purpose of using the ZnO/TD as a photocatalyst was to reduction Cr(VI), whi...

One of the main concerns of all industries such as mine industries is to increase their profit and keep their customers through improving quality level of their products; but increasing the quality of products usually releases air pollutants. Nowadays the management of air pollutant emissions with harmful environmental and health effects is one of the most pressing problems. In this paper, auth...

2014
E.M. da Fonseca J.A. Baptista Neto J.J. McAlister B.J. Smith M.A.C. Crapez

Processes involving heavy metals and other contaminants continue to present unsolved environmental questions. To advance the understanding of geochemical processes that involve the bioavailability of contaminants, cores where collected in the Rodrigo de Freitas lagoon, and analyzed for bacterial activity and metal concentrations. Results would suggest an extremely reducing environment where org...

2016
Shan-Wei Li Guo-Ping Sheng Yuan-Yuan Cheng Han-Qing Yu

Although the capacity for electroactive bacteria to convert environmental metallic minerals and organic pollutants is well known, the role of the redox properties of microbial extracellular polymeric substances (EPS) in this process is poorly understood. In this work, the redox properties of EPS from two widely present electroactive bacterial strains (Shewanella oneidensis and Pseudomonas putid...

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