scholarly journals Microwave-assisted synthesis of glutathione-coated hollow zinc oxide for the removal of heavy metal ions from aqueous systems

RSC Advances ◽  
2019 ◽  
Vol 9 (28) ◽  
pp. 15976-15985 ◽  
Author(s):  
Lateef Ahmad Malik ◽  
Arshid Bashir ◽  
Taniya Manzoor ◽  
Altaf Hussain Pandith
Keyword(s):  
Heavy Metal ◽  
Zinc Oxide ◽  
Metal Ions ◽  
Specific Surface ◽  
Heavy Metal Ions ◽  
High Specific Surface Area ◽  
Environmentally Benign ◽  
Microwave Assisted Synthesis ◽  
Microwave Assisted ◽  
Enhanced Adsorption

Environmentally benign Glu@h-ZnO possesses good affinity for heavy metal ions, with enhanced adsorption capacity due to its high specific surface area.

Straw-sheaf-like terbium-based coordination polymer architectures: microwave-assisted synthesis and their application as selective luminescent probes for heavy metal ions

2015 ◽  
Vol 39 (4) ◽  
pp. 2973-2979 ◽  
Author(s):  
Mengmeng Shi ◽  
Chenghui Zeng ◽  
Lei Wang ◽  
Zhiwen Nie ◽  
Yongxia Zhao ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Heavy Metal ◽  
Coordination Polymer ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Microwave Assisted Synthesis ◽  
Luminescent Probes ◽  
Microwave Assisted ◽  
Highly Sensitive ◽  
Polymer Architectures

Terbium-based coordination polymer architectures were successfully synthesized via a microwave heating approach and they showed highly sensitive and selective luminescence quenching to Pb2+ in aqueous solution.

scholarly journals Advanced Modified Polyacrylonitrile Membrane with Enhanced Adsorption Property for Heavy Metal Ions

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Xinfeng Zhang ◽  
Shujing Yang ◽  
Bing Yu ◽  
Qinglong Tan ◽  
Xiaoyan Zhang ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Adsorption Property ◽  
Enhanced Adsorption ◽  
Polyacrylonitrile Membrane

Use of pure diatomite for the sorption of heavy metal ions

2019 ◽  
Vol 17 (3) ◽  
pp. 189-192
Author(s):  
A. Nurgain
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Specific Surface ◽  
Heavy Metal Ions ◽  
Water Based ◽  
Degree Of Extraction ◽  
Purification Of Water

This article presents results according to purification of water based on diatomite sorbents.The results of the study of diatomite samples from two different regions shows thatadsorption capacity, specific surface and the degree of extraction of the sorbent of Republicof Kazakhstan higher than Iranian diatomite.

Recent Advances in Water Treatment Using Graphene-based Materials

2020 ◽  
Vol 17 (1) ◽  
pp. 74-90 ◽  
Author(s):  
Nader Ghaffari Khaligh ◽  
Mohd Rafie Johan
Keyword(s):  
Heavy Metal ◽  
Water Treatment ◽  
Ion Exchange ◽  
Metal Ions ◽  
Metal Ion ◽  
Heavy Metal Ions ◽  
Membrane Filtration ◽  
Chemical Precipitation ◽  
High Specific Surface Area ◽  
Adsorption Parameters

: A variety of processes were reported for efficient removing of heavy metal from wastewater, including but not limited to ion exchange, reverse osmosis, membrane filtration, flotation, coagulation, chemical precipitation, solvent extraction, electrochemical treatments, evaporation, oxidation, adsorption, and biosorption. Among the aforementioned techniques, adsorption/ion exchange has been known as a most important method for removing heavy metal ions and organic pollutants due to great removal performance, simple and easy process, cost-effectiveness and the considerable choice of adsorbent materials. : Nanotechnology and its applications have been developed in most branches of science and technology. Extensive studies have been conducted to remove heavy metal ions from wastewater by preparation and applications of various nanomaterials. Nanomaterials offer advantages in comparison to other materials including an extremely high specific surface area, low-temperature modification, short intraparticle diffusion distance, numerous associated sorption sites, tunable surface chemistry, and pore size. In order to evaluate an adsorbent, two key parameters are: the adsorption capacity and the desorption property. The adsorption parameters including the absorbent loading, pH and temperature, concentration of heavy metal ion, ionic strength, and competition among metal ions are often studied and optimized. : Several reviews have been published on the application of Graphene (G), Graphene Oxide (GO) in water treatment. In this minireview, we attempted to summarize the recent research advances in water treatment and remediation process by graphene-based materials and provide intensive knowledge of the removal of pollutants in batch and flow systems. Finally, future applicability perspectives are offered to encourage more interesting developments in this promising field. This minireview does not include patent literature.

scholarly journals Preparation and Characterization of Nanoporous Activated Carbon Derived from Prawn Shell and Its Application for Removal of Heavy Metal Ions

Materials ◽  
2019 ◽  
Vol 12 (2) ◽  
pp. 241 ◽  
Author(s):  
Jian Guo ◽  
Yaqin Song ◽  
Xiaoyang Ji ◽  
Lili Ji ◽  
Lu Cai ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Activated Carbon ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Ph Value ◽  
Average Pore Size ◽  
High Specific Surface Area ◽  
Koh Activation ◽  
Average Pore ◽  
Effects Of Ph

The aim of this study was to optimize the adsorption performance of activated carbon (AC), derived from the shell of Penaeus vannamei prawns, on heavy metal ions. Inexpensive, non-toxic, and renewable prawn shells were subjected to carbonization and, subsequently, KOH-activation to produce nanoporous K-Ac. Carbonized prawn shells (CPS) and nanoporous KOH-activated carbon (K-Ac) from prawn shells were prepared and characterized by FTIR, XRD, BET, SEM, and TEM. The results showed that as-produced K-Ac samples were a porous material with microporous and mesoporous structures and had a high specific surface area of 3160 m2/g, average pore size of about 10 nm, and large pore volume of 2.38 m3/g. Furthermore, batches of K-Ac samples were employed for testing the adsorption behavior of Cd2+ in solution. The effects of pH value, initial concentration, and adsorption time on Cd2+ were systematically investigated. Kinetics and isotherm model analysis of the adsorption of Cd2+ on K-Ac showed that experimental data were not only consistent with the Langmuir adsorption isotherm, but also well-described by the quasi-first-order model. Finally, the adsorption behaviors of as-prepared K-Ac were also tested in a ternary mixture of heavy metal ions Cu2+, Cr6+, and Cd2+, and the total adsorption amount of 560 mg/g was obtained.

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