Characterization and reactivity of biogenic manganese oxides for ciprofloxacin oxidation

Tu, Jinjun; Yang, Zuosheng; Hu, Chun; Qu, Jiuhui

doi:10.1016/s1001-0742(13)60505-7

Cited by 67 publications

(16 citation statements)

References 33 publications

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“…For XRD analysis, the pattern of BMO showed (Fig. 5) that two reflections at 2.46 Å and 1.41 Å (d spacing) appeared, which were attributed to the (100) and (110) crystal planes of d-MnO 2 or birnessite consisting of discrete layers or poorly ordered stacking of adjacent layers, respectively (Brock et al, 1999;Tu et al, 2014). Six reflections in XRD pattern of Fe oxide were identical to those of the lepidocrocite (00-044-1415, PDF number) and similar to other FeOOH standards, demonstrating Fe oxide formed in situ was FeOOH.…”

Section: Variation Of Z-potential and Particle Sizementioning

confidence: 99%

The role of biogenic Fe-Mn oxides formed in situ for arsenic oxidation and adsorption in aquatic ecosystems

et al. 2016

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a b s t r a c tAs(III&V), Mn(II), and Fe(II) may occur simultaneously in some groundwater and surface water. Studying their redox reactions and interactions is essential to unravel the biogeochemical cycles of these metal ions in aquatic ecosystems and to find effective methods to remove them simultaneously in drinking water treatment. Here, the formation of biogenic Fe-Mn oxides (BFMO, defined as a mixture of biogenic Mn oxide (BMO) and Fe oxide) as well as its oxidation and adsorption of As in a Fe(II)-Mn(II)-As(III&V)-Mn-oxidizing microbe (Pseudomonas sp. QJX-1) system were investigated. Batch experiments and structure characterization revealed that the BFMO was formed via a sequential precipitation of Fe oxide and BMO. The first formed Fe oxide was identified as FeOOH (lepidocrocite) and the latter formed BMO was identified as MnO 2 (similar to hexagonal birnessite). In the BFMO mixture, the BMO part was mainly responsible for As(III) oxidation, and the Fe oxide part dominated As adsorption. Remarkably, the BMO could oxidize Fe(II) to form FeOOH, which may improve As adsorption. The optimum Mn(II)/Fe(II) ratio for As removal was approximately 1:3 (mol/mol). Taken together, in Fe(II)-Mn(II)-As(III&V)-Mn-oxidizing microbe ecosystems, the in situ formation of BFMO could eliminate or decrease Fe(II), Mn(II), and As(III&V) species simultaneously. Therefore, based on this study, new approaches may be developed for As removal from water containing high concentrations of Fe(II) and Mn(II).

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Section: Variation Of Z-potential and Particle Sizementioning

confidence: 99%

The role of biogenic Fe-Mn oxides formed in situ for arsenic oxidation and adsorption in aquatic ecosystems

et al. 2016

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“…1B) (Gao et al, 2012;He et al, 2012;Meerburg et al, 2012;Remucal and Ginder-Vogel, 2014;Tu et al, 2014;Li et al, 2015a). Permanganate (MnO 4 ¡ ) can be used to remove pharmaceuticals and other micropollutants containing electron-rich moieties (Guan et al, 2010;Hendratna, 2011).…”

Section: Chemical Oxidationmentioning

confidence: 99%

“…This is observed in the faster transformation of clarithromycin and roxithromycin by Mn(IV), which has a 2-3 times higher reaction rate per surface unit than Fe (III) (Feitosa-Felizzola et al, 2009). Studies show that amorphous MnO 2 can be used to remove pharmaceuticals such as carbamazepine, sulfamethazine, and diclofenac (Gao et al, 2012;He et al, 2012;Meerburg et al, 2012;Tu et al, 2014;Li et al, 2015a). This chemical removal process is pH dependent and effective when pH < 6 (Gao et al, 2012;He et al, 2012).…”

Section: ¡1mentioning

confidence: 99%

“…As a result, diclofenac removal via adsorption and chemical oxidation with bioMnOx is 10-times faster than with synthetic MnO 2 (Forrez et al, 2010). Additionally, complete removal of ciprofloxacin (Tu et al, 2014) and 17% removal of carbamazepine are obtained (Forrez et al, 2011). Studies also show that the performance will increase in the presence of trace metals, such as Ag or Pb.…”

Section: Biological-related Removalmentioning

confidence: 99%

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Pharmaceutical removal from water with iron- or manganese-based technologies: A review

Liu

Sutton

Rijnaarts

et al. 2016

Critical Reviews in Environmental Science and Technology

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Pharmaceuticals are detected at trace levels in waters. Their adverse effects on aquatic ecosystems and human health demand novel pharmaceutical removal technologies for treating wastewater effluents. Iron (Fe) or manganese (Mn) may play important roles in these new technologies since these metals are abundantly available at low costs and are known to contribute to organic conversions via physico-chemical, chemical, and biologically related processes. Few reviews describe and discuss Fe-or Mn-based technologies for the purpose to remove pharmaceuticals from water. Therefore, we review the current literature sorted into the three removal mechanisms, that is., through physico-chemical, chemical, and biological processes. The principals, performance, and influential parameters of these three types of technologies are described. Current and potential applications of these technologies are critically evaluated in order to identify advantages and challenges. In addition, the Fe-or Mn-based technologies which are currently not used but promising to further develop to remove pharmaceuticals cost efficiently are proposed.

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“…Biogenic manganese oxides (BMOs) are layered hexagonal birnessite with poor crystallinity, which are called “scavengers of the sea” and play important roles in elemental biogeochemical cycles . Due to high adsorption capacity and catalytic reactivity, BMOs have been applied as adsorbents for heavy metal ions, oxidants and catalysts for promoting transformation of organic pollutants . BMOs formed without excessive energy and under natural conditions are expected to be cost‐effective and environmental‐friendly functional materials.…”

Section: Introductionmentioning

confidence: 99%

Cobalt‐doped biogenic manganese oxides for enhanced tetracycline degradation by activation of peroxymonosulfate

Luo

Xie

Niu

et al. 2018

J of Chemical Tech & Biotech

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BACKGROUND: Tetracycline (TC) residues in water and soil have received wide attention due to their adverse effects on human health and ecosystem. Layer-structured biogenic manganese oxides (BMOs) could be obtained from fungi Pleosporales sp. Y-5 culture. Cobalt doping into BMOs (Co-BMOs) was conducted by a facile impregnation-calcination method to eliminate TC residues through activation of peroxymonosulfate (PMS). RESULTS: TheTC in aqueous solution could be nearly completely removed in about 10 minutes under the optimal condition ([TC] = 50 mg L −1 , [catalyst] = 0.2 g L −1 , [PMS] = 0.4 g L −1 , 25 ∘ C). The electron paramagnetic resonance (EPR) identified the coexistence of SO 4 − • and OH• during PMS activation. The Co-BMOs catalyst remained great catalytic activity after five runs. Possible mechanism of PMS activation and TC degradation pathway were proposed. Preliminary biological toxicity test using green algae Chlorella vulgaris (FACHB-8) as ecological indicator confirmed that TC degradation solution was less toxic than the original solution. CONCLUSION: This study demonstrated high catalytic activity and stability of Co-BMOs for degradation of TC by PMS activation. The Co-BMOs/PMS system is helpful in new efforts for TC degradation without generation of more toxic intermediates. Industry 0.4 g L −1 PMS followed by adjustment of pH to 7.0. Then the Chlorella vulgaris was treated with 50 mL fresh TC solution and degraded solution, respectively. Cultures were incubated on an orbital shaker (180 rpm, 30 ∘ C) for 120 hours. The concentration J Chem Technol Biotechnol 2019; 94: 752-760

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Characterization and reactivity of biogenic manganese oxides for ciprofloxacin oxidation

Cited by 67 publications

References 33 publications

The role of biogenic Fe-Mn oxides formed in situ for arsenic oxidation and adsorption in aquatic ecosystems

The role of biogenic Fe-Mn oxides formed in situ for arsenic oxidation and adsorption in aquatic ecosystems

Pharmaceutical removal from water with iron- or manganese-based technologies: A review

Cobalt‐doped biogenic manganese oxides for enhanced tetracycline degradation by activation of peroxymonosulfate

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