Results 141 to 150 of about 5,722,673 (193)

Adsorption of Pb (II) ions from aqueous solutions using carbon nanotubes: A systematic review

Journal of Cleaner Production, 2021
The presence of Pb (II) ions, as a major pollutant source, in the water resources causes global health concerns. The adsorption method has been conventionally used for the determination and removal of Pb (II) ions.
M. Vesali-Naseh, Mohammad Reza Vesali Naseh, Pegah Ameri   +2 more
semanticscholar   +1 more source

Catalytic determination of Pb(II) in the presence of Cu(II)

Analytical and Bioanalytical Chemistry, 2002
A kinetic method is presented to determine micro-molar amounts of Pb(II) from various river and wastewater samples, in the presence of trace copper. The procedure is based on the catalytic effect of both species on the oxidation of mercaptosuccinic acid by chromate in acidic media. The extent of the reaction is followed spectrophotometrically at 420 nm
A, Rustoiu-Csavdari, S, Bâldea, D, Mihai   +2 more
openaire   +2 more sources

Adsorption of Pb(II) by UV-aged microplastics and cotransport in homogeneous and heterogeneous porous media.

Journal of Hazardous Materials
To investigate the adsorption effects of aged microplastics (MPs) on Pb(II) and their co-transport properties in homogeneous (quartz sand) and heterogeneous (quartz sand with apple branches biochar) porous media, we explored the co-transport of UV ...
Bokun Chang, Zixuan Huang, Xiaodong Yang, Tianhuan Yang, Xianhui Fang, Xianbao Zhong, Wei Ding, Gang Cao, Yajun Yang, Feinan Hu, Chenyang Xu, Ling Qiu, Jialong Lv, W. Du   +13 more
semanticscholar   +1 more source

Pb(II) Ion-Imprinted Micro-Porous Particles for the Selective Separation of Pb(II) Ions

Journal of Nanoscience and Nanotechnology, 2014
Pb(II) ion-imprinted micro-porous particles were prepared from the ionic complexes formed between vinyl pyridine functional monomers and template Pb(II) ions. The self-assembled Pb(II)/monomer complex was suspension polymerized in the presence of divinylbenzene cross-linker. The prepared micro-particles were 400-600 μm in size.
Yang, Jiang, Dukjoon, Kim
openaire   +2 more sources

M1–E2 interference in the Zeeman spectra of Pb I and Pb II

Journal of Physics B: Atomic, Molecular and Optical Physics, 2009
Studies of the M1–E2 interference effect in the Zeeman spectra of two mixed-type forbidden lines, 733.2 nm of Pb I and 710.2 nm of Pb II, are reported. In the experiment, the odd isotope 207 of Pb was used. By the use of computer modelling techniques the simulated contours were fitted to the recorded spectra in order to determine the electric ...
Sławomir Werbowy, Jerzy Kwela
openaire   +1 more source

Microbial Pb(II) Precipitation: Kinetic Modelling of Pb(II) Removal and Microbial Growth

2020
The study aimed to propose a preliminary kinetic model for Pb(II) bioremoval by an industrially obtained microbial consortium. The consortium has previously been shown to be extremely effective at precipitating Pb(II) from solution. For data generation, 100 mL batch reactors were set up anaerobically and spiked with either 80 ppm Pb(II) or 500 ppm Pb ...
Horstmann, Carla, Brink, Hendrik Gideon, Chirwa, Evans M.N.   +2 more
openaire   +2 more sources

Pb(II)-Carboxylate Structure and Reactivity: from Pb(II) Coordination Compounds to PbS Colloidal Nanocrystals

Inorganic Chemistry
Lead(II)-carboxylates are important precursors for preparing Pb-based semiconductor nanocrystals (NCs). However, the atomic structure of common Pb-carboxylate precursors (e.g., Pb-oleate) remains elusive. Here, we use a rigid yet soluble 4-tert-butylbenzoate (TBBA) as a model ligand to probe the binding and reactivity of Pb-carboxylates.
Joshua O. Gibson, Robert A. Brown, Fuyan Ma, Saryvoudh A. Mech, Chenjie Zeng   +4 more
openaire   +2 more sources

Green synthesis of hydrophilic activated carbon supported sulfide nZVI for enhanced Pb(II) scavenging from water: Characterization, kinetics, isotherms and mechanisms.

Journal of Hazardous Materials, 2020
For green synthesis of nZVI with low aggregation and high antioxidation, green tea extracts were explored as reductant during the synthesis with modification by hydrophilic porous activated carbon (HPAC) and sulfidation technology.
Jianhua Qu, Yang Liu, Li Cheng, Zhao Jiang, Guangshan Zhang, Fengxia Deng, Lei Wang, Wei Han, Ying Zhang   +8 more
semanticscholar   +1 more source

Fe3O4-FeMoS4: Promise magnetite LDH-based adsorbent for simultaneous removal of Pb (II), Cd (II), and Cu (II) heavy metal ions.

Journal of Hazardous Materials, 2020
There have always been numerous challenges to designing a cost-effectiveness, reusable and robust adsorbents for simultaneous heavy metal ion remediations from wastewaters.
Elham Sadati Behbahani, K. Dashtian, M. Ghaedi   +2 more
semanticscholar   +1 more source

Environmentally friendly fabrication of new β-Cyclodextrin/ZrO2 nanocomposite for simultaneous removal of Pb(II) and BPA from water.

Science of the Total Environment, 2021
Heavy metals and endocrine disrupters often co-exist in wastewater, while their possible competition behaviours make uptake removal more challenging. Therefore, β-Cyclodextrin based nanocomposite adsorbent was successfully fabricated (β-Cyclodextrin/ZrO2)
M. Usman, Adeel Ahmed, Z. Ji, Bing Yu, Youqing Shen, H. Cong   +5 more
semanticscholar   +1 more source