Removal of Mn (II) by Sodium Alginate/Graphene Oxide Composite Double-Network Hydrogel Beads from Aqueous Solutions

Scientific Reports
Xiuzhen YangYuezhou Zhang

Abstract

After the successful preparation of empirical double network hydrogel beads from graphene oxide/sodium alginate(GO/SA), its cationic metal adsorption performance in aqueous solutions were investigated. Taking Mn(II) as an example, the contribution of several factors including pH, bead dosage, temperature, contact time and initial concentration ions to adsorption efficiency were examined. The Transmission Electron Microscopy (TEM) results indicate that the GO/SA double (GAD) network hydrogel bead strongly interpenetrate and the adsorption of Mn(II) is mainly influenced by solution pH, bead dose and temperature. The GAD beads exhibit an excellent adsorption capacity of 56.49 mg g-1. The adsorption process fit both Pseudo-second order kinetic model (R2 > 0.97) and the Freundlich adsorption isotherm (R2 > 0.99) and is spontaneous. After seven rounds of adsorption-desorption cycle, the adsorption capacity of GAD hydrogel remained unchanged at 18.11 mg/g.

References

Jun 8, 2001·Journal of the American Chemical Society·J P GongM Kinjo
Jun 29, 2004·Journal of Colloid and Interface Science·Saeid Azizian
Mar 17, 2009·Biometals : an International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine·Andre M N SilvaRobert C Hider
Aug 25, 2010·ACS Nano·Daniela C MarcanoJames M Tour
Nov 30, 2011·Progress in Polymer Science·Kuen Yong Lee, David J Mooney
Jan 31, 2012·Journal of Hazardous Materials·Hu TangLina Zhang
Sep 7, 2012·ACS Applied Materials & Interfaces·Jie LiXiangke Wang
Apr 12, 2014·Science·Etienne DucrotCostantino Creton
Aug 6, 2016·Macromolecular Bioscience·Philipp T KühnPatrick van Rijn
Apr 4, 2017·International Journal of Biological Macromolecules·Yongzhe Piao, Biqiong Chen

❮ Previous
Next ❯

Citations

Nov 13, 2019·Nanoscale Research Letters·Rabia BabyMohd Zobir Hussein
Mar 4, 2020·Environmental Science and Pollution Research International·Hongxue DuMingyue Piao
Dec 16, 2019·Environmental Science and Pollution Research International·Quan ZhangQi Fan
Mar 14, 2021·International Journal of Biological Macromolecules·Eman RagabFatma Mohamed
Jun 3, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Eduardo LeivaCarolina Rodríguez

❮ Previous
Next ❯

Methods Mentioned

BETA
X-ray
differential scanning calorimetry

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.