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Enhanced removal of Cd(II) by poly(acrylamide-co-sodium acrylate) water-retaining agent incorporated nano hydrous manganese oxide

In this study, the hydrous manganese oxide (MO) nano-particles impregnated into a poly(acrylamide-co-sodium acrylate) (PP), was synthesized as PPM, and its characterization, adsorption properties and mechanism were investigated. The transmission electron microscopy (TEM) revealed the mostly MO with...

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Published in:Materials & design 2016-04, Vol.96, p.195-202
Main Authors: Peng, Liang, Xu, Yi, Zhou, Fang, Sun, Baorui, Tie, Boqing, Lei, Ming, Shao, Jihai, Gu, Jidong
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container_title Materials & design
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Xu, Yi
Zhou, Fang
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Tie, Boqing
Lei, Ming
Shao, Jihai
Gu, Jidong
description In this study, the hydrous manganese oxide (MO) nano-particles impregnated into a poly(acrylamide-co-sodium acrylate) (PP), was synthesized as PPM, and its characterization, adsorption properties and mechanism were investigated. The transmission electron microscopy (TEM) revealed the mostly MO with size of lower than 20nm were dispersed in polymer. The MO greatly improved the Cd(II) uptake for PP in aqueous solution, due to its high affinity. These adsorptive processes are corresponded to the Sips isotherm model. It was revealed that maximum adsorption capacity (qm) of PP loaded with MO (Mn wt%=1.05%, PPM-40) and PP for Cd(II) are 507 and 281mg/g in present of 0.1M NaCl. However, the qm of PPM-40 and PP are 698 and 771mg/g without any NaCl. The preferential adsorption of PPM-40 to Cd(II) was showed when inferenced with salt ion. The XPS exhibited the 67% Cd(II) was captured by MO and 33% was by PP, in present of 0.1M NaCl. The seed germination and leaching experiments demonstrated that the PPM-40 can be taken as a filter for Cd(II) and supplied “clean” water for plant roots in soil. It is a potential in-situ fixation agent for remediation of agricultural soil polluted with Cd(II). [Display omitted] •The water-retaining agent loaded with nanoparticles was prepared as a novel adsorbent to uptake Cd(II) from intersitial water in soil.•The qm of water-retaining agent with nano hydrous manganese oxide (PPM-40) for Cd(II) was 507mg/g in present of 0.1M NaCl, higher than that of the single water-retaining agent or nano hydrous manganese oxide.•The novel anti-interfering technology was explored for nano inorganic materials as in-situ fixation agents for agricultural soil polluted with heavy metal.
doi_str_mv 10.1016/j.matdes.2016.02.025
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subjects Acrylates
Adsorption
Cadmium
Manganese oxide
Manganese oxides
Nanostructure
Polypropylenes
Soil (material)
Transmission electron microscopy
Water purification
Water-retaining agent
title Enhanced removal of Cd(II) by poly(acrylamide-co-sodium acrylate) water-retaining agent incorporated nano hydrous manganese oxide
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