PMID- 30546039 OWN - NLM STAT- MEDLINE DCOM- 20191021 LR - 20200309 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 8 IP - 1 DP - 2018 Dec 13 TI - Augmentation of Atrazine biodegradation by two Bacilli immobilized on alpha-Fe(2)O(3) magnetic nanoparticles. PG - 17831 LID - 10.1038/s41598-018-36296-1 [doi] LID - 17831 AB - In this study, a novel immobilizing carrier with alpha-Fe(2)O(3) magnetic nanoparticles was developed and used for immobilization of atrazine-degrading bacterial isolates of Bacillus spp. Since the free cells of microorganisms generally not succeed to degrade pollutants; thus, extra treatments are alluring to make strides biodegradation. Scanning electron microscope (SEM) images appeared that after immobilization the bacterial cells were totally retained and entirely distributed on the surface of alpha-Fe(2)O(3) magnetic nanoparticles(.) The performance of alpha-Fe(2)O(3) immobilized cells in atrazine (ATZ) degradation was compared with the free cells, which was about 90.56% in 20 days. Experimental results exhibited that ATZ could be degraded at a broad range of physicochemical parameters viz. pH (4.0 to 9.0), temperature (20 to 45 degrees C), ATZ concentration (50 to 300 mg L(-1)) and agitation speed (50 to 300 rpm), which underlines that alpha-Fe(2)O(3) immobilized cells could tolerate a higher range of ATZ concentration as compared to free cells. This research demonstrated that alpha-Fe(2)O(3) could be applied as a potential carrier in cell immobilization and biodegradation of ATZ herbicide with greater efficiency. FAU - Khatoon, Hina AU - Khatoon H AUID- ORCID: 0000-0001-6680-3939 AD - Department of Environmental Science, G.B. Pant University of Agriculture and Technology, Pantnagar (U.S. Nagar), Uttarakhand, India. hinakhatoon29@gmail.com. FAU - Rai, J P N AU - Rai JPN AD - Department of Environmental Science, G.B. Pant University of Agriculture and Technology, Pantnagar (U.S. Nagar), Uttarakhand, India. LA - eng PT - Journal Article DEP - 20181213 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 RN - 0 (Magnetite Nanoparticles) RN - QJA9M5H4IM (Atrazine) SB - IM MH - Atrazine/*metabolism MH - Bacillus/cytology/*metabolism MH - Biodegradation, Environmental MH - Cells, Immobilized/cytology/*metabolism MH - Magnetite Nanoparticles/*chemistry PMC - PMC6292855 COIS- The authors declare no competing interests. EDAT- 2018/12/14 06:00 MHDA- 2019/10/23 06:00 PMCR- 2018/12/13 CRDT- 2018/12/15 06:00 PHST- 2018/08/31 00:00 [received] PHST- 2018/11/14 00:00 [accepted] PHST- 2018/12/15 06:00 [entrez] PHST- 2018/12/14 06:00 [pubmed] PHST- 2019/10/23 06:00 [medline] PHST- 2018/12/13 00:00 [pmc-release] AID - 10.1038/s41598-018-36296-1 [pii] AID - 36296 [pii] AID - 10.1038/s41598-018-36296-1 [doi] PST - epublish SO - Sci Rep. 2018 Dec 13;8(1):17831. doi: 10.1038/s41598-018-36296-1.