Optimization of Cadmium Adsorption by Magnetic Graphene Oxide Using a Fractional Factorial Design.

Hui Wang, Yiming Zhou, Xinjiang Hu, Yuan Guo, Xiaoxi Cai, Chunjie Liu, Ping Wang, Yunguo Liu

Abstract read

In one paragraph

Article in International journal of environmental research and public health, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

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1citing papers in PubMed

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1 citing paper in PubMed.

From Screening to Optimization: Strategic Implementation of Design of Experiments (DOE) for Robust Nanoparticle Formulation.Polymers · 2026
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5 · Who and what money

Authors and funding

8 authors.

Hui WangCollege of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China.

Yiming ZhouCollege of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China.

Xinjiang HuCollege of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China.

Yuan GuoInstitute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, China.

Xiaoxi CaiCollege of art and design, Hunan First Normal University, Changsha 410205, China.

Chunjie LiuInstitute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, China.

Ping WangCollege of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China.

Yunguo LiuCollege of Environmental Science and Engineering, Hunan University, Changsha 410082, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Graphene materials have attracted increasing interest in water remediation. In this study, magnetic graphene oxide (MGO) was prepared through the modified Hummers method and the adsorption behaviors of cadmium were investigated. Firstly, the sorption kinetics, isotherms, as well as the effects of pH were investigated. Then, fractional factorial design (FFD) was used to optimize the effects of pH, temperature, time, initial concentration of cadmium ion and NaCl on cadmium adsorption. The results indicate that MGO could effectively remove cadmium ions from an aqueous solution and the sorption data could be described well by pseudo-second-order and Freundlich models, showing that the adsorption rate of cadmium ions on MGO is multilayer adsorption and dominated by the chemical adsorption. According to the FFD results, the maximum adsorption capacity of cadmium ions was 13.169 mg/g under the optimum condition of pH value 8, 45 °C, contact time 60 min, initial cadmium concentration of 70 mg/L and NaCl concentration of 100 mg/L. Higher levels of the pH value, temperature and initial cadmium concentration are beneficial to the adsorption process. These results are important for estimating and optimizing the removal of metal ions by MGO composite.

Indexed as

CadmiumGraphiteWater Pollutants, ChemicalAdsorptionHydrogen-Ion ConcentrationKineticsMagnetic PhenomenaCadmiumgraphene oxideGraphiteWater Pollutants, Chemicalcadmiumfractional factorial designmagnetic graphene oxideoptimizationremoval

Identifiers

PMID32933079

DOI10.3390/ijerph17186648

PMCPMC7559111

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.