Results 31 to 40 of about 335,817 (304)

When spectroscopy fails: The measurement of ion pairing [PDF]

open access: yes, 2006
Spectroscopic techniques such as UV/vis, NMR, and Raman are powerful tools for the investigation of chemical speciation in solution. However, it is not widely recognized that such techniques do not always provide reliable information about ion ...
Hefter, G.
core   +2 more sources

A Selective Bioreduction of Toxic Heavy Metal Ions from Aquatic Environment by Saccharomyces cerevisiae

open access: yesE-Journal of Chemistry, 2008
The need to remove or recover metal ions from industrial wastewater has been established in financial as well as environmental terms. This need has been proved financially in terms of cost saving through metal reuse or sale and environmentally as heavy ...
A. M. Rahatgaonkar, N. R. Mahore
doaj   +1 more source

Preparation of Amidoxime Polyacrylonitrile Chelating Nanofibers and Their Application for Adsorption of Metal Ions. [PDF]

open access: yes, 2013
Polyacrylonitrile (PAN) nanofibers were prepared by electrospinning and they were modified with hydroxylamine to synthesize amidoxime polyacrylonitrile (AOPAN) chelating nanofibers, which were applied to adsorb copper and iron ions. The conversion of the
Hsieh, You-Lo   +5 more
core   +3 more sources

Valorization of keratin biofibers for removing heavy metals from aqueous solutions [PDF]

open access: yes, 2018
Four common waste keratin biofibers (human hair, dog hair, chicken feathers, and degreased wool) have been used as biosorbents for the removal of heavy metal ions from aqueous solutions. Different parameters of the biosorption processes were optimized in
Carrillo Navarrete, Fernando   +3 more
core   +2 more sources

A review on performance of waste materials in self compacting concrete (scc) [PDF]

open access: yes, 2016
Self-compacting concrete (SCC) was first developed in late 80’s in Japan. SCC is well known for its self-consolidation and able to occupy spaces in the formwork without any vibration and become new interesting topic in Construction and Building Materials
Ismail, Isham   +2 more
core   +2 more sources

Thermodynamic Study on the Adsorption of Pb2+ and Zn2+ From Aqueous Solution by Human Hair

open access: yesE-Journal of Chemistry, 2010
Adsorption of Pb(II) and Zn(II) ions from aqueous solutions was studied in a batch system using modified human hair. The optimum conditions for the adsorption of Pb(II) and Zn(II) ions from aqueous solution by human hair were investigated by considering ...
A. S. Ekop, N. O. Eddy
doaj   +1 more source

Novel benzimidazole-based conjugated polyelectrolytes: synthesis, solution photophysics and fluorescent sensing of metal ions

open access: yese-Polymers, 2020
Two benzimidazole-based conjugated polyelectrolytes (+)-PPBIPV and (-)-PPBIPV which have opposite charges on their side chains were synthesized via Heck coupling reaction and characterized by 1H-NMR, UV-vis and PL spectroscopy. These two polyelectrolytes
Wei Yuhan   +7 more
doaj   +1 more source

Stress distribution of secondary bending in single-lap bolted joints with dissimilar joining plates and plate types [PDF]

open access: yes, 2016
Single-lap joints are an important class of bolted joint in the aerospace and civil engineering sectors. This type of joint is preferred as it can reduce weight and hence help to optimize fuel efficiency.
Ahmad, Hilton
core   +2 more sources

Adsorption of Zinc and Copper Ions by the Solid Waste of the Olive Oil Industry

open access: yesAdsorption Science & Technology, 2001
The adsorption capacity of dried olive oil husks (SWOOI) for zinc ions (Zn 2+ ) and copper ions (Cu 2+ ) was studied. It was verified that the Freundlich and Langmuir isotherms describe the adsorption of Cu 2+ and Zn 2+ ions reasonably well. Up to 90% of
Sameer Al-Asheh, Fawzi Banat
doaj   +1 more source

Removal of cadmium and lead from aqueous solutions using iron phosphate-modified pollen microspheres as adsorbents

open access: yesReviews on Advanced Materials Science, 2021
Iron phosphate-modified pollen microspheres (pollen@FePO4) were prepared and applied as sorbents for the removal of heavy metals (Cd2+ and Pb2+) from the aqueous solution.
Zhang Xiaoxing   +6 more
doaj   +1 more source

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