PMID- 31952183 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240328 IS - 2073-4360 (Electronic) IS - 2073-4360 (Linking) VI - 12 IP - 1 DP - 2020 Jan 15 TI - Fabrication of PAN Electrospun Nanofibers Modified by Tannin for Effective Removal of Trace Cr(III) in Organic Complex from Wastewater. LID - 10.3390/polym12010210 [doi] LID - 210 AB - Removal of chromium ions is significant due to their toxicity and harmfulness, however it is very difficult to remove trace Cr(III) complexed with organics because of their strong stability. Herein, a novel electrospun polyacrylonitrile (PAN) nanofibers (NF) adsorbent was fabricated and modified by tannic acid (TA) by a facile blend electrospinning approach for removal of trace Cr(III) in an organic complex. Utilizing the large specific area of nanofibers in the membrane and the good affinity of tannic acid on the nanofibers for hydrolyzed collagen by hydrophobic and hydrogen bonds, the as-prepared PAN-TA NFM exhibited good adsorption toward Cr(III)-collagen complexes and effective reduction of total organic carbon in tannage wastewater. The maximal adsorption capacity of Cr(III) is 79.48 mg g(-1) which was obtained at the pH of 7.0 and initial Cr(III) concentration of 50 mg g(-1). Importantly, the batch adsorption could decrease the Cr(III) concentration from 10-20 mg L(-1) to under 1.5 mg L(-1), which showed great application potential for the disposal of trace metal ions in organic complexes from wastewater. FAU - Zhang, Jing AU - Zhang J AD - College of Environmental Science and Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China. FAU - Xue, Chao-Hua AU - Xue CH AD - College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China. AD - National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science and Technology, Xi'an 710021, China. FAU - Ma, Hong-Rui AU - Ma HR AD - College of Environmental Science and Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China. FAU - Ding, Ya-Ru AU - Ding YR AD - College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China. FAU - Jia, Shun-Tian AU - Jia ST AD - College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China. LA - eng GR - 51572161/National Natural Science Foundation of China/ GR - 2017zx07602-001/National major project on water pollution control/ PT - Journal Article DEP - 20200115 PL - Switzerland TA - Polymers (Basel) JT - Polymers JID - 101545357 PMC - PMC7023609 OTO - NOTNLM OT - adsorption OT - complex form OT - electrospun nanofibers OT - tannic acid OT - trace Cr(III) COIS- The authors declare no conflict of interest. EDAT- 2020/01/19 06:00 MHDA- 2020/01/19 06:01 PMCR- 2020/01/15 CRDT- 2020/01/19 06:00 PHST- 2019/12/19 00:00 [received] PHST- 2020/01/10 00:00 [revised] PHST- 2020/01/13 00:00 [accepted] PHST- 2020/01/19 06:00 [entrez] PHST- 2020/01/19 06:00 [pubmed] PHST- 2020/01/19 06:01 [medline] PHST- 2020/01/15 00:00 [pmc-release] AID - polym12010210 [pii] AID - polymers-12-00210 [pii] AID - 10.3390/polym12010210 [doi] PST - epublish SO - Polymers (Basel). 2020 Jan 15;12(1):210. doi: 10.3390/polym12010210.