Results 131 to 140 of about 5,722,673 (193)

Adenosine-functionalized UiO-66-NH2 to efficiently remove Pb(II) and Cr(VI) from aqueous solution: Thermodynamics, kinetics and isothermal adsorption.

Journal of Hazardous Materials, 2021
A new zirconium-based adsorption material (UiO-66-AMP) was prepared by modifying UiO-66-NH2 with 5-adenosine to effectively remove Pb(II) and Cr(VI) from wastewater.
Hao Wang, Shuai Wang, Shixing Wang, Jiali Tang, Yingbi Chen, Libo Zhang   +5 more
semanticscholar   +1 more source

Isotope shifts of multipole lines of Pb I and Pb II

Journal of the Optical Society of America B, 2010
Studies of isotope shifts of three multipole lines between levels of the ground configuration 6s26p2 of Pb I, i.e.: 461.9 nm(1S0→3P1), 531.5 nm(1S0→3P2) and 733.2 nm(1D2→3P1), as well as 710.2 nm line (6s26p2P3∕2→6s26p2P1∕2) of Pb II are presented. We determined the isotope shifts between four stable isotopes: 204, 206, 207, 208.
Tomasz Jarosław Wąsowicz, Sławomir Werbowy, Jerzy Kwela, Ryszard Drozdowski   +3 more
openaire   +2 more sources

Novel Zn-Fe engineered kiwi branch biochar for the removal of Pb(II) from aqueous solution.

Journal of Hazardous Materials, 2022
In this study, a novel adsorbent made from kiwi branch biochar modified with Zn-Fe (KB/Zn-Fe) was compared with original biochar to the Pb(II)'s adsorptivity from waste water. The adsorbent was synthetized by liquid-phase deposition.
Yuehui Tan, Xirui Wan, Tingheng Zhou, Le Wang, Xianqiang Yin, Aisheng Ma, Nong Wang   +6 more
semanticscholar   +1 more source

Adsorption of Pb(II), NTA, and Pb(II)–NTA onto TiO2

Journal of Colloid and Interface Science, 1997
Nitrilotriacetic acid (NTA) is extensively used in different industries because of its excellent chelating properties. Introduction of NTA into the natural environment is a concern because of mobilization of heavy metal species that may be otherwise bound to natural particulate matter.
, Vohra, , Davis
openaire   +2 more sources

Efficient and selective removal of Pb(II) from aqueous solution by modification crofton weed: Experiment and density functional theory calculation

Journal of Cleaner Production, 2021
A low-cost and selective adsorbent (referred to as CC-CCW@DM) is prepared by modifying crofton weed using 1,3-diaminoguanidine monohydrochloride to achieve Pb(II) removal.
Song Cheng, Baolin Xing, C. Shi, Yanhe Nie, H. Xia   +4 more
semanticscholar   +1 more source

Optimizing magnetic functionalization conditions for efficient preparation of magnetic biochar and adsorption of Pb(II) from aqueous solution.

Science of the Total Environment, 2021
Recoverable magnetic biochar has great potential for treating wastewater contaminants such as Pb(II). However, whether magnetic modification could enhance metal adsorption efficiency is currently contradictory in the literature mainly due to the ...
Jun Dong, Lin-lin Shen, S. Shan, Wanpeng Liu, Zhifu Qi, Chunhong Liu, Xiang Gao   +6 more
semanticscholar   +1 more source

Adsorption of Pb(II), EDTA, and Pb(II)-EDTA onto TiO2

Journal of Colloid and Interface Science, 1998
The adsorption of aqueous Pb(II), EDTA, and Pb(II)-EDTA complexes onto TiO{sub 2} were studied at both stoichiometric and non-stoichiometric Pb(II)/EDTA concentrations. For Pb(II)-TiO{sub 2} and ECTA-TiO{sub 2}, a typical cationic and anionic-type of adsorption was noted, respectively.
Muhammad S Vohra, Allen P Davis
openaire   +1 more source

Design and syntheses of functionalized copper-based MOFs and its adsorption behavior for Pb(II)

Chinese Chemical Letters, 2021
A novel copper-based MOFs adsorbent (Cu-BTC-Th) was prepared using an one-step method by introducing a new organic ligand of 4-Thioureidobenzoicacid (Th) with active groups for selectively adsorbing Pb(II) from aqueous solutions. The chemical composition
Jingping Zhong, Jian Zhou, Minsi Xiao, Jun Liu, Jili Shen, Juan Liu, S. Ren   +6 more
semanticscholar   +1 more source

KOH-activated high surface area Douglas Fir biochar for adsorbing aqueous Cr(VI), Pb(II) and Cd(II).

Chemosphere, 2020
Biochar has become a popular research topic in sustainable chemistry for use both in agriculture and pollution abatement. To enhance aqueous Cr(VI), Pb(II) and Cd(II) removal efficiency, high surface area (535 m2/g) byproduct Douglas fir biochar (DFBC ...
A. Herath, Cody A Layne, F. Perez, E. M. Hassan, C. Pittman, T. Mlsna   +5 more
semanticscholar   +1 more source

Natural, low-cost adsorbents for toxic Pb(II) ion sequestration: A state-of-the-art review.

Chemosphere, 2021
Pb(II) ions is an inorganic pollutant that is present in the environment. Its presence affects both human health and ecosystem. Economically, amongst many wastewater treatment approaches, adsorption is both cheap and environmentally friendly for removing
P. Oladoye
semanticscholar   +1 more source