A novel application of biologically synthesized nanoparticles for enhanced biohydrogen production and carbon monoxide bioconversion

被引：29

作者：

Sinharoy, Arindam ^{[1
]}

Pakshirajan, Kannan ^{[1
]}

机构：

[1] Indian Inst Technol Guwahati, Dept Biosci & Bioengn, Gauhati 781039, Assam, India

来源：

RENEWABLE ENERGY | 2020年 / 147卷

关键词：

Biological nanoparticle; Carbon monoxide bioconversion; Biohydrogen production; Gas lift bioreactor; CO-Water mass transfer; FERMENTATIVE HYDROGEN-PRODUCTION; VALENT IRON NANOPARTICLES; SULFATE REDUCTION; MASS-TRANSFER; OXIDE NANOPARTICLES; SYNGAS FERMENTATION; DARK FERMENTATION; GREEN SYNTHESIS; SOLE CARBON; WATER;

D O I：

10.1016/j.renene.2019.09.027

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This work details the synthesis and characterization of iron nanoparticles (GT-INP) from green-tea extract and its effect on biohydrogen production from CO by anaerobic biomass. Analysis of the GTINP by UV-visible spectroscopy revealed spherical or quasi-spherical shape of the iron oxide nanoparticles. X-ray diffraction analysis confirmed the presence of iron oxide (Fe3O4) and iron(III) oxidehydroxide (FeO(OH)) in the GT-INP. The appearance of strong vibrational bands in fourier transform infrared spectra indicated the presence of amide, C-N and hydroxyl groups due to flavonoids, alkaloids and polyphenols as capping agents in the GT-INP. Field emission scanning electron microscopy and field emission transmission electron microscopy analyses revealed that the size of GT-INP was within 50-90 nm range with a spherical shaped aggregated structure. In the presence of GT-INP at 1000 mg/I, more than 56 +/- 5.32% enhancement in aqueous solubility of CO was achieved along with a maximum H-2 production of 1.58 +/- 0.13 mmolil by anaerobic biomass, which is nearly 44% more than that obtained without any GT-INP addition. Continuous bioreactor study using a gas lift reactor further established the potential of GT-INP in improving biohydrogen production from CO with a maximum H-2 titre of 30.7 mmol/l due to GT-INP addition in the system. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页码：864 / 873

页数：10

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