نتایج جستجو برای: sorption process

تعداد نتایج: 1321604  

2016
Quan-Guo Zhai Xianhui Bu Chengyu Mao Xiang Zhao Luke Daemen Yongqiang Cheng Anibal J Ramirez-Cuesta Pingyun Feng

Metal-organic frameworks are a class of crystalline porous materials with potential applications in catalysis, gas separation and storage, and so on. Of great importance is the development of innovative synthetic strategies to optimize porosity, composition and functionality to target specific applications. Here we show a platform for the development of metal-organic materials and control of th...

2015
Monica Butnariu Petru Negrea Lavinia Lupa Mihaela Ciopec Adina Negrea Marius Pentea Ionut Sarac Ionel Samfira Kiran Tota-Maharaj Rao Bhamidiammarri

The effects of the sorption of environmental applications by various source materials of natural organic matter, i.e., bone powder, was examined. Sorption capacities and subsequent rare earth element retention characteristics of all metals tested were markedly increased by ionic task-specific. In this study, the abilities of three models' isotherms widely were used for the equilibrium sorption ...

Journal: :Environmental science & technology 2003
James A Dyer Paras Trivedi Stephen J Sanders Noel C Scrivner Donald L Sparks

Few studies have demonstrated the practical application of surface complexation models, calibrated with fundamental macroscopic and spectroscopic metal sorption data, in helping to solve industrial trace metal emissions problems. In this work, multistage ferrihydrite sorption systems are evaluated for their effectiveness in reducing single-solute lead(II) [Pb(II)] concentrations in contaminated...

Journal: :Chemical communications 2011
Simon S Iremonger Junmei Liang Ramanathan Vaidhyanathan George K H Shimizu

A bis(phosphonatemonoester) is employed as a linker in a Zn(II) metal organic framework. The complex is a layered structure pillared only by vdW interactions between alkyl groups. Nonetheless, permanent pores are formed as confirmed by PXRD and gas sorption analysis.

2016
Hanyu Wu Ping Li Duoqiang Pan Zhuoxin Yin Qiaohui Fan Wangsuo Wu

The interactions between contaminations of U(VI) and silicon oxide nanoparticles (SONPs), both of which have been widely used in modern industry and induced serious environmental challenge due to their high mobility, bioavailability, and toxicity, were studied under different environmental conditions such as pH, temperature, and natural organic matters (NOMs) by using both batch and spectroscop...

Journal: :Journal of colloid and interface science 2005
Ming Fan Thipnakarin Boonfueng Ying Xu Lisa Axe Trevor A Tyson

Hydrous amorphous Al (HAO), Fe (HFO), and Mn (HMO) oxides are ubiquitous in the subsurface as both discrete particles and coatings and exhibit a high affinity for heavy metal contaminants. To assess risks associated with heavy metals, such as Pb, to the surrounding environment and manage remedial activities requires accurate mechanistic models with well-defined transport parameters that represe...

Journal: :Acta biochimica Polonica 2014
Paulina Olesiak Longina Stępniak

This study is focused on biosorption process used in water treatment. The process has a number of advantages and a lot of research has been done into its intensification by means of ultrasonic modification of solutions. The study carried out by the authors leads to the conclusion that sonication of organic solutions allows for extension of the time of operation of carbon beds. For the analysis ...

Journal: :Poultry science 2004
K Pimpukdee L F Kubena C A Bailey H J Huebner E Afriyie-Gyawu T D Phillips

Aflatoxin contamination of foods and livestock feeds is an ongoing problem. In this research, NovaSil PLUS (NSP), a calcium montmorillonite clay that is commonly used as an anticaking agent in feeds, was evaluated for its ability to bind aflatoxin B1 (AfB1) in vitro and to prevent the onset of aflatoxicosis and vitamin A depletion in broiler chicks in vivo. Isothermal analyses were conducted wi...

Journal: :Journal of environmental sciences 2011
Mohe Zhang Quanlin Zhao Zhengfang Ye

We treated 2,4,6-trinitrotoluene (TNT) red water from the Chinese explosive industry with activated coke (AC) from lignite. Since the composition of TNT red water was very complicated, chemical oxygen demand (COD) was used as the index for evaluating treatment efficiency. This study focused on sorption kinetics and equilibrium sorption isotherms of AC for the removal of COD from TNT red water, ...

Journal: :Journal of colloid and interface science 2004
James A Dyer Paras Trivedi Stephen J Sanders Noel C Scrivner Donald L Sparks

Previous studies demonstrated the environmental and economic benefits of treating lead(II)-contaminated water streams with ferrihydrite in multiple equilibrium sorption stages. In this work, multistage ferrihydrite sorption systems were evaluated for their effectiveness in reducing single-solute zinc(II) (Zn(II)) concentrations in contaminated water streams to very low levels. As for lead(II) (...

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