نتایج جستجو برای: boron removal

تعداد نتایج: 159279  

2017
Kha L. Tu Allan R. Chivas Long D. Nghiem

Boron rejection by nanofiltration (NF) and reverse osmosis (RO) membranes in the presence of glycerol, mannitol and sorbitol was investigated as a function of feed solution pH and boron:polyol molar ratio. In the presence of polyols, significant boron rejection improvement was obtained and the extent of the impact was directly related to the stability constant of the boron-polyol complex. Polyo...

Journal: :Chemical communications 2014
Travis Lundrigan T Stanley Cameron Alison Thompson

The activation of F-BODIPYs with boron trihalides, followed by treatment with a nucleophile, effects facile substitution at boron; using water as the nucleophile promotes deprotective removal of the -BF2 moiety and thereby production of the corresponding parent dipyrrin salt in quantitative yield under extremely mild conditions.

Journal: :Physical chemistry chemical physics : PCCP 2012
Shuangyin Wang Thomas Cochell Arumugam Manthiram

Boron doping into carbon nanotubes improves the CO tolerance and increases the utilization efficiency of the supported Pt nanoparticles. Boron doping leads to a uniform deposition of Pt nanoparticles and also facilitates the removal of CO from the Pt surface, resulting in an increase in the electrocatalytic activity for methanol oxidation.

2008
Yu-Ting Wei Yu-Ming Zheng J. Paul Chen

Excess intake of boron containing water can pose serious problems on human beings. Traditional technologies are limited by insufficient efficiency especially for trace boron removal. In this study, a novel sorbent was developed. A series of batch sorption experiments was conducted to investigate the boron sorption behaviors of the synthesized chitosan based sorbent. Our results show, comparing ...

Journal: :Journal of the Institute of Science and Technology 2019

Journal: :Pamukkale University Journal of Engineering Sciences 2014

2014
Hary Demey-Cedeño Montserrat Ruiz Jesús Alberto Barron-Zambrano Ana Maria Sastre

BACKGROUND A column sorption study was carried out using calcium alginate gel beads as adsorbent for the removal of boron from aqueous solutions. The breakthrough curve was obtained as a function of pH, initial concentration of boron, feed flow rate, adsorbent mass and column diameter. The breakthrough capacity values and adsorption percentage of calcium alginate gel for boron were...

2012
Masahide Taniguchi Yoshinari Fusaoka Tsuyoshi Nishikawa Masaru Kurihara

In the seawater desalination field, WHO requires the boron concentration in drinking water to be below 0.5 mg/l, and this requirement has affected SWRO process design, because of the difficulty to achieve such low boron concentration. In order to overcome this problem, a new SWRO membrane element, which had higher boron rejecting performance, was developed. This new SWRO membrane element exhibi...

Journal: :Clinical chemistry 2001
J Laakso M Kulvik I Ruokonen J Vähätalo R Zilliacus M Färkkilä M Kallio

BACKGROUND Boron neutron-capture therapy (BNCT) is a drug-targeted binary radiotherapy for cancer. The (10)B capture of thermal neutrons induces secondary radiation within cells during irradiation. The most widely used boron carrier is 4-dihydroxyborylphenylalanine (BPA). The duration and timing of the irradiation is adjusted by monitoring (10)B concentrations in whole blood. METHODS We devel...

Journal: :Metallurgical and Materials Transactions E 2014

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید