PMID: 24364312Dec 25, 2013Paper

Comparison of As removal performance by graphene/iron-based material

Huan jing ke xue= Huanjing kexue
ChaomuerlegeYan-Xia Huo

Abstract

FTIR and XRD showed that three hybid materials which were M-RGO, H-RGO and N-RGO were successfully made from graphene oxide with magnetite, hematite and zero-valence iron respectively. The arsenic removal performance, such as adsorption kinetics, adsorption isotherm, appropriate pH range and resistance to co-existing ions were studied and compared. Results showed that the adsorption of arsenic on three materials fit pseudo-second-order kinetics, and the adsorption isotherm was consistent with the Langmuir model, while the order of adsorption capacities was: N-RGO > M-RGO > H-RGO. Three materials had better adsorptions of As(III) under the condition of weak acid to neutral, the M-RGO and H-RGO materials were less influenced by the pH, and their pH ranges for adsorbing As(III) were wider than that of N-RGO material. In these three materials, N-RGO was least affected by co-existing ions, H-RGO was the second, and M-RGO was most affected.

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.