Journal
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
Volume 39, Issue 15, Pages 4891-4900Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2019.06.038
Keywords
Glass hollow fiber membrane; Adsorption; Methylene blue; Reusability
Categories
Funding
- National Natural Science Foundation of China [51402212]
- Science and Technology Plans of Tianjin [15PTSYJC00250]
- Science & Technology Development Fund of Tianjin Education Commission for Higher Education [2017KJ073]
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In this work, the PVDF/glass as-prepared composite membrane was prepared through phase-inversion method and used to adsorb methylene blue dye. The results of SEM and BET showed that the membrane had an asymmetric nanoscale porous structure. The electronegativity on the surface of membrane was determined through zeta potential test. The adsorption properties of as-prepared composite membrane and glass membrane were studied through testing the removal ratio of methylene blue from aqueous solution. Then the effects of membranes dose, pH value, temperature and initial concentration on the removal ratio were systematically studied. The adsorption mechanism was also studied. The adsorption kinetics and adsorption isotherm fitted well with the pseudo-second-order model and Freundlich model, respectively. In addition, the adsorption efficiency of glass membrane basically remained 85% after eight repeated adsorption-calcination cycles. The obtained membranes could be reused for methylene blue removal with high efficiency for multiply times.
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