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Enhanced reductive removal of ciprofloxacin in pharmaceutical wastewater using biogenic palladium nanoparticles by bubbling H2
RSC Advances ( IF 3.9 ) Pub Date : 2020-7-10 , DOI: 10.1039/d0ra03783d Peipei He 1 , Tianyu Mao 1 , Anming Wang 1 , Youcheng Yin 2 , Jinying Shen 1 , Haoming Chen 1 , Pengfei Zhang 1
RSC Advances ( IF 3.9 ) Pub Date : 2020-7-10 , DOI: 10.1039/d0ra03783d Peipei He 1 , Tianyu Mao 1 , Anming Wang 1 , Youcheng Yin 2 , Jinying Shen 1 , Haoming Chen 1 , Pengfei Zhang 1
Affiliation
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To treat waste with waste and efficiently remove the organic pollutant, waste palladiums(II) were adsorbed and reduced on microorganism surface to catalyze the reductive removal of ciprofloxacin in pharmaceutical wastewater. By optimizing conditions such as pH and temperature, the amount of biogenic palladium adsorbed and reduced on E. coli reached 139.48 mg g−1 (Pd/microorganisms). Moreover, most of the Pd(II) was reduced to nanometer-sized Pd(0) as characterized by TEM and SEM with EDXA. Using the obtained biogenic palladium, the reductive removal of ciprofloxacin is up to 87.70% at 25 °C, 3.03 folds of that achieved in the absence of H2. The results show that waste E. coli microorganisms can efficiently adsorb and remove waste Pd(II) and produce Bio-Pd nanoparticle catalysts in the presence of H2. This biogenic palladium presents high catalytic activity and great advantages in the reductive degradation of ciprofloxacin. Our method can also be applied to other waste metal ions to prepare the biogenic metals, facilitate their recovery and reuse in degrading organic pollutants in wastewater to achieve “treating waste using waste”.
中文翻译：
使用生物钯纳米粒子通过 H2 鼓泡增强还原去除制药废水中的环丙沙星
为以废处理，高效去除有机污染物，将废钯( II )吸附还原于微生物表面，催化制药废水中环丙沙星的还原去除。通过优化pH和温度等条件，大肠杆菌吸附和还原的生物钯量达到139.48 mg g -1（Pd/微生物）。此外，大部分 Pd( II ) 被还原为纳米尺寸的 Pd(0)，如 TEM 和 SEM 与 EDXA 所表征的。使用所获得的生物钯，在25℃时环丙沙星的还原去除率高达87.70%，是没有H 2时还原去除率的3.03倍。结果表明，废弃的大肠杆菌在H 2存在下，微生物可以有效地吸附和去除废Pd( II )并产生Bio-Pd纳米颗粒催化剂。这种生物源钯在环丙沙星的还原降解中表现出高催化活性和巨大优势。我们的方法也可应用于其他废金属离子制备生物源金属，促进其回收再利用，降解废水中的有机污染物，实现“以废治废”。
更新日期：2020-07-10
中文翻译：
使用生物钯纳米粒子通过 H2 鼓泡增强还原去除制药废水中的环丙沙星
为以废处理，高效去除有机污染物，将废钯( II )吸附还原于微生物表面，催化制药废水中环丙沙星的还原去除。通过优化pH和温度等条件，大肠杆菌吸附和还原的生物钯量达到139.48 mg g -1（Pd/微生物）。此外，大部分 Pd( II ) 被还原为纳米尺寸的 Pd(0)，如 TEM 和 SEM 与 EDXA 所表征的。使用所获得的生物钯，在25℃时环丙沙星的还原去除率高达87.70%，是没有H 2时还原去除率的3.03倍。结果表明，废弃的大肠杆菌在H 2存在下，微生物可以有效地吸附和去除废Pd( II )并产生Bio-Pd纳米颗粒催化剂。这种生物源钯在环丙沙星的还原降解中表现出高催化活性和巨大优势。我们的方法也可应用于其他废金属离子制备生物源金属，促进其回收再利用，降解废水中的有机污染物，实现“以废治废”。
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