BIOMAT Database Logo BIOMAT Database Logo

Enhanced reactivity of nZVI embedded into supermacroporous cryogels for highly efficient Cr(VI) and total Cr removal from aqueous solution. 2018

Zhenzhen Jia, and Yuehong Shu, and Renlong Huang, and Junguang Liu, and Lingling Liu
School of Chemistry & Environment, South China Normal University, Guangzhou, 510006, China.

Novel supermacroporous PSA-nZVI composites with nanoscale zero-valent iron particles (nZVI) embedded into poly (sodium acrylate) (PSA) cryogels were synthesized through ion exchange followed by in-situ reduction. The magnetic composites were evaluated for material characterizations and their efficiency for Cr(VI) and total Cr removal from aqueous medium in batch experiments. PSA-nZVI composites with high nZVI loading capacity up to 128.70 mg Fe/g PSA were obtained, and the interconnected macroporous structure of PSA cryogel remained unaltered with nZVI uniformly distributed on PSA cryogel as determined by TGA, SEM, TEM, XRD and XPS analyses. PSA-nZVI composites showed faster reaction rate than free nZVI both for Cr(VI) and total Cr removal, suggesting no mass transfer resistance and the enhanced reactivity of nZVI in PSA carrier. PSA-nZVI composites exhibited much more remarkable performance for Cr(VI) and total Cr removal than free nZVI particles in high removal capacity and broad pH application range (pH 4-10). The reaction mechanisms were also elucidated with XPS analyses before and after Cr(VI) reduction reactions. These results demonstrate that PSA cryogel acts as an excellent carrier and shows multiple functions in nZVI particle dispersion, pH buffering and oxidation resistance in addition to immobilizing nZVI particles from release.

UI MeSH Term Description Entries
D007501 Iron A metallic element with atomic symbol Fe, atomic number 26, and atomic weight 55.85. It is an essential constituent of HEMOGLOBINS; CYTOCHROMES; and IRON-BINDING PROTEINS. It plays a role in cellular redox reactions and in the transport of OXYGEN. Iron-56,Iron 56
D008962 Models, Theoretical Theoretical representations that simulate the behavior or activity of systems, processes, or phenomena. They include the use of mathematical equations, computers, and other electronic equipment. Experimental Model,Experimental Models,Mathematical Model,Model, Experimental,Models (Theoretical),Models, Experimental,Models, Theoretic,Theoretical Study,Mathematical Models,Model (Theoretical),Model, Mathematical,Model, Theoretical,Models, Mathematical,Studies, Theoretical,Study, Theoretical,Theoretical Model,Theoretical Models,Theoretical Studies
D010084 Oxidation-Reduction A chemical reaction in which an electron is transferred from one molecule to another. The electron-donating molecule is the reducing agent or reductant; the electron-accepting molecule is the oxidizing agent or oxidant. Reducing and oxidizing agents function as conjugate reductant-oxidant pairs or redox pairs (Lehninger, Principles of Biochemistry, 1982, p471). Redox,Oxidation Reduction
D002857 Chromium A trace element that plays a role in glucose metabolism. It has the atomic symbol Cr, atomic number 24, and atomic weight 52. According to the Fourth Annual Report on Carcinogens (NTP85-002,1985), chromium and some of its compounds have been listed as known carcinogens.
D000180 Acrylic Resins Polymers of high molecular weight which are derived from acrylic acid, methacrylic acid or other related compounds and are capable of being molded and then hardened to form useful components. Acrylic Resin,Resin, Acrylic,Resins, Acrylic
D012996 Solutions The homogeneous mixtures formed by the mixing of a solid, liquid, or gaseous substance (solute) with a liquid (the solvent), from which the dissolved substances can be recovered by physical processes. (From Grant & Hackh's Chemical Dictionary, 5th ed) Solution
D013499 Surface Properties Characteristics or attributes of the outer boundaries of objects, including molecules. Properties, Surface,Property, Surface,Surface Property
D014874 Water Pollutants, Chemical Chemical compounds which pollute the water of rivers, streams, lakes, the sea, reservoirs, or other bodies of water. Chemical Water Pollutants,Landfill Leachate,Leachate, Landfill,Pollutants, Chemical Water
D016062 Porosity Condition of having pores or open spaces. This often refers to bones, bone implants, or bone cements, but can refer to the porous state of any solid substance. Porosities
D053761 Nanocomposites Nanometer-scale composite structures composed of organic molecules intimately incorporated with inorganic molecules. (Glossary of Biotechnology and Nanobiotechology Terms, 4th ed) Nanocomposite

Related Publications

Zhenzhen Jia, and Yuehong Shu, and Renlong Huang, and Junguang Liu, and Lingling Liu
Green synthesis of nZVI-modified biochar significantly enhanced the removal of Cr(VI) from aqueous solution.
May 2024, Environmental science and pollution research international,
Zhenzhen Jia, and Yuehong Shu, and Renlong Huang, and Junguang Liu, and Lingling Liu
A novel preparation of S-nZVI and its high efficient removal of Cr(VI) in aqueous solution.
August 2021, Journal of hazardous materials,
Zhenzhen Jia, and Yuehong Shu, and Renlong Huang, and Junguang Liu, and Lingling Liu
Robust DUT-67 material for highly efficient removal of the Cr(VI) ion from an aqueous solution.
January 2023, Frontiers in chemistry,
Zhenzhen Jia, and Yuehong Shu, and Renlong Huang, and Junguang Liu, and Lingling Liu
Stabilization of nanoscale zero-valent iron (nZVI) with modified biochar for Cr(VI) removal from aqueous solution.
June 2017, Journal of hazardous materials,
Zhenzhen Jia, and Yuehong Shu, and Renlong Huang, and Junguang Liu, and Lingling Liu
Highly Stable, Mechanically Enhanced, and Easy-to-Collect Sodium Alginate/NZVI-rGO Gel Beads for Efficient Removal of Cr(VI).
September 2023, Polymers,
Zhenzhen Jia, and Yuehong Shu, and Renlong Huang, and Junguang Liu, and Lingling Liu
Novel amino-modified bamboo-derived biochar-supported nano-zero-valent iron (AMBBC-nZVI) composite for efficient Cr(VI) removal from aqueous solution.
December 2023, Environmental science and pollution research international,
Zhenzhen Jia, and Yuehong Shu, and Renlong Huang, and Junguang Liu, and Lingling Liu
nFeS Embedded into Cryogels for High-Efficiency Removal of Cr(VI): From Mechanism to for Treatment of Industrial Wastewater.
January 2024, Gels (Basel, Switzerland),
Zhenzhen Jia, and Yuehong Shu, and Renlong Huang, and Junguang Liu, and Lingling Liu
Crosslinked modified chitosan biopolymer for enhanced removal of toxic Cr(VI) from aqueous solution.
April 2023, International journal of biological macromolecules,
Zhenzhen Jia, and Yuehong Shu, and Renlong Huang, and Junguang Liu, and Lingling Liu
Enhanced removal of Cr(VI) from aqueous solution using polypyrrole/Fe3O4 magnetic nanocomposite.
June 2011, Journal of hazardous materials,
Zhenzhen Jia, and Yuehong Shu, and Renlong Huang, and Junguang Liu, and Lingling Liu
A novel lignin hydrogel supported nZVI for efficient removal of Cr(VI).
August 2022, Chemosphere,
Copied contents to your clipboard!