Evidence map›Paper›PMID 40051104›Full record

ArticleWater science and technology : a journal of the International Association on Water Pollution Research2022

Adsorption of humic acid fractions by a magnetic ion exchange resin.

Lei Ding, Dandan Wang, Ling Li, Yunhan Jia, Jiangya Ma, Feifei Wang, Jan Peter van der Hoek

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Article in Water science and technology : a journal of the International Association on Water Pollution Research, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

7 authors.

Lei Ding *Engineering Research Center of Biomembrane Water Purification and Utilization Technology, Ministry of Education, Anhui University of Technology, Maanshan 243002, China; School of Civil Engineering and Architecture, Anhui University of Technology, Maanshan 243002, China; These two authors contributed equally to this work.
Dandan Wang *Engineering Research Center of Biomembrane Water Purification and Utilization Technology, Ministry of Education, Anhui University of Technology, Maanshan 243002, China; School of Civil Engineering and Architecture, Anhui University of Technology, Maanshan 243002, China; These two authors contributed equally to this work.
Ling LiSchool of Civil Engineering and Architecture, Anhui University of Technology, Maanshan 243002, China.
Yunhan JiaSchool of Civil Engineering and Architecture, Anhui University of Technology, Maanshan 243002, China.
Jiangya MaSchool of Civil Engineering and Architecture, Anhui University of Technology, Maanshan 243002, China.
Feifei WangEngineering Research Center of Biomembrane Water Purification and Utilization Technology, Ministry of Education, Anhui University of Technology, Maanshan 243002, China; School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China E-mail: wff1986@163.com.
Jan Peter van der HoekDepartment of Water Management, Delft University of Technology, 2628 CN Delft, The Netherlands; Waternet, Research & Innovation Program, 1096 AC Amsterdam, The Netherlands.

Funding

Anhui Provincial Natural Science Foundation Grant No. 2108085ME187Engineering Research Center of biomemfilm water purification and utilization technology Ministry of Education Grant No. BWPU2020KF01National Natural Science Foundation of China Grant No. 51308001State Key Laboratory of Pollution Control and Resource Reuse Foundation Grant No. PCRRF19003
6 · The paper itself

Abstract

Natural organic matter in waters varies in different fractions. To better understand the removal of different fractions by a magnetic ion exchange (MIEX) resin and the mechanism behind it, this study investigated adsorption kinetics, equilibrium and thermodynamics of humic acid (HA) fractions with different hydrophilic-hydrophobic properties and molecular weights on MIEX resin through a series of batch experiments. MIEX resin can effectively remove approximately 40% of hydrophilic and 30% of hydrophobic HA components, as well as approximately 44% of molecular weight (MW) <10 kDa to some degree. The removal efficiency of HA fractions by MIEX resin reduced with the increase of pH from 6 to 9. Adsorption kinetics of different HA fractions on MIEX resin fitted the pseudo-second-order model well. With the increase of MW of HA from <1 kDa to >10 kDa, the time to reach adsorption equilibrium reduced from 180 to 120 min. It took more time for the hydrophilic fractions (140 min) to reach the equilibrium than for hydrophobic HA fractions (120 min). The Sips model fitted the adsorption equilibrium data of HA fractions on MIEX resin well. It was revealed that the adsorption of HA fractions on MIEX resin was spontaneous, endothermic and an entropy driven process, and the chemisorption might dominate the adsorption of HA components on MIEX resin. This study is of great significance to the design of magnetic ion exchange resin reactors and the optimization of operational parameters for the removal of natural organic matter with different hydrophilic-hydrophobic properties and molecular weights in different water sources.

Indexed as

adsorptionHAion exchangeMIEX resinmolecular weight

Identifiers

PMID40051104

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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.