Abstract：
:In this work, cornstalk (CS) was irradiated by high energy electron beam to obtain honeycomb-like porous CS (PCS). The PCS was loaded with ammonium sulfite (AS) and then coated by polyvinyl alcohol (PVA)-Fe3O4 to obtain PCS-AS@PVA-Fe3O4. The PCS-AS@PVA-Fe3O4 could reduce hexavalent chromium (Cr(VI)) to trivalent chromium (Cr(III)) by SO32-, then the Cr(III) combined with PCS-AS@PVA-Fe3O4 through hydrogen bonds. The resulting PCS-AS@PVA-Fe3O4/Cr with a high magnetism could be conveniently separated from water via a magnet. PCS-AS@PVA-Fe3O4/Cr showed a high performance on controlling Cr(VI) migration in soil and uptake by plant. Meanwhile, ammonium could be released from PCS-AS@PVA-Fe3O4, favoring plant growth. Therefore, this work not only provides a promising and low-cost approach to remove Cr(VI) and promote plant growth simultaneously, but also provides a new route for CS recycling, which might have a potential application value.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Ren J,Zhang G,Wang D,Cai D,Wu Zdoi
10.1016/j.biortech.2019.121856subject
Has Abstractpub_date
2019-11-01 00:00:00pages
121856eissn
0960-8524issn
1873-2976pii
S0960-8524(19)31086-7journal_volume
291pub_type
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