Nanoporous Block Polymer Thin Films Functionalized with Bio-Inspired Ligands for the Efficient Capture of Heavy Metal Ions from Water

2017 ◽  
Vol 9 (22) ◽  
pp. 19152-19160 ◽  
Author(s):  
Jacob L. Weidman ◽  
Ryan A. Mulvenna ◽  
Bryan W. Boudouris ◽  
William A. Phillip
Keyword(s):  
Thin Films ◽  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Polymer Thin Films ◽  
Block Polymer

[Fe(CN)6]4− decorated mesoporous gelatin thin films for colorimetric detection and as sorbents of heavy metal ions

2013 ◽  
Vol 42 (36) ◽  
pp. 13265 ◽  
Author(s):  
Li Shi ◽  
Hubiao Huang ◽  
Luwei Sun ◽  
Yanping Lu ◽  
Binyang Du ◽  
...  
Keyword(s):  
Thin Films ◽  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Colorimetric Detection

Features of Obtaining ZnO:Ag Thin Films Systems by the Method of Simultaneous Magnetron Sputtering with Subsequent Annealing

2021 ◽  
Vol 893 ◽  
pp. 11-15
Author(s):  
Pavels Sarajevs ◽  
Vjaceslavs Gerbreders ◽  
Edmunds Tamanis
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Heavy Metal ◽  
Optical Properties ◽  
Magnetron Sputtering ◽  
Metal Ions ◽  
Thermal Annealing ◽  
Heavy Metal Ions ◽  
Thin Film Composites ◽  
Film Composites

This work describes the study of the effect of thermal annealing on the properties of the ZnO:Ag thin film composites, which are the basis of sensors of heavy metal ions, as well as sensors of poisonous and explosive substances. Changes of the optical properties and morphology of the surfaces of composites with five different component ratios were analyzed. The studies performed have revealed significant changes in the properties of nanocomposites ZnO:Ag. This study may become the basis for future works on improving the sensitivity of sensors of poisonous and explosive substances.

The Detention of the Heavy Metal Ions by the Zeolitic Volcanic Tuffs (A Case Study of Cluj County, Romania)

2011 ◽  
Vol 3 (11) ◽  
pp. 213-214
Author(s):  
Dobocan Corina Adriana ◽  
◽  
Craciun Florina
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions

Bioadsorption of Multiple Heavy Metal Ions by Rhizophora Apiculate sp. and Elaesis Guineensis sp.

2017 ◽  
Vol 14 (1) ◽  
pp. 15
Author(s):  
M.B. Nicodemus Ujih ◽  
Mohammad Isa Mohamadin ◽  
Milla-Armila Asli ◽  
Bebe Norlita Mohammed
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Removal Efficiency ◽  
Heavy Metal Ions ◽  
Agricultural Waste ◽  
Living Organism ◽  
Heavy Metal Concentration ◽  
Industrial Area ◽  
Electrochemical Treatment ◽  
Chemical Oxidation

Heavy metal ions contamination has become more serious which is caused by the releasing of toxic water from industrial area and landfill that are very harmful to all living organism especially human and can even cause death if contaminated in small amount of heavy metal concentration. Currently, peoples are using classic method namely electrochemical treatment, chemical oxidation/reduction, chemical precipitation and reverse osmosis to eliminate the metal ions from toxic water. Unfortunately, these methods are costly and not environmentally friendly as compared to bioadsorption method, where agricultural waste is used as biosorbent to remove heavy metals. Two types of agricultural waste used in this research namely oil palm mesocarp fiber (Elaesis guineensis sp.) (OPMF) and mangrove bark (Rhizophora apiculate sp.) (MB) biomass. Through chemical treatment, the removal efficiency was found to improve. The removal efficiency is examined based on four specification namely dosage, of biosorbent to adsorb four types of metals ion explicitly nickel, lead, copper, and chromium. The research has found that the removal efficiency of MB was lower than OPMF; whereas, the multiple metals ions removal efficiency decreased in the order of Pb2+ > Cu2+ > Ni2+ > Cr2+.

Comparative Bio-sorption of Cadmium and Nickel Ions from Aqueous Solution onto Fibers of Date Palm using Fluidized Bed Column

2019 ◽  
Vol 70 (5) ◽  
pp. 1507-1512
Author(s):  
Baker M. Abod ◽  
Ramy Mohamed Jebir Al-Alawy ◽  
Firas Hashim Kamar ◽  
Gheorghe Nechifor
Keyword(s):  
Aqueous Solution ◽  
Heavy Metal ◽  
Metal Ions ◽  
Fluidized Bed ◽  
Removal Efficiency ◽  
Heavy Metal Ions ◽  
Date Palm ◽  
Operating Conditions ◽  
Initial Concentration ◽  
Bed Height

The aim of this study is to use the dry fibers of date palm as low-cost biosorbent for the removal of Cd(II), and Ni(II) ions from aqueous solution by fluidized bed column. The effects of many operating conditions such as superficial velocity, static bed height, and initial concentration on the removal efficiency of metal ions were investigated. FTIR analyses clarified that hydroxyl, amine and carboxyl groups could be very effective for bio-sorption of these heavy metal ions. SEM images showed that dry fibers of date palm have a high porosity and that metal ions can be trapped and sorbed into pores. The results show that a bed height of 6 cm, velocity of 1.1Umf and initial concentration for each heavy metal ions of 50 mg/L are most feasible and give high removal efficiency. The fluidized bed reactor was modeled using ideal plug flow and this model was solved numerically by utilizing the MATLAB software for fitting the measured breakthrough results. The breakthrough curves for metal ions gave the order of bio-sorption capacity as follow: Cd(II)]Ni(II).

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