Enhancing biohydrogen production from lignocellulosic biomass of Paulownia waste by charge facilitation in Zn doped SnO2 nanocatalysts

Nadeem Tahir; Faiqa Nadeem; Farzana Jabeen; Reeta Rani Singhania; Umair Yaqub Qazi; Anil Kumar Patel; Rahat Javaid; Quanguo Zhang

doi:10.1016/j.biortech.2022.127299

Enhancing biohydrogen production from lignocellulosic biomass of Paulownia waste by charge facilitation in Zn doped SnO₂ nanocatalysts

Bioresour Technol. 2022 Jul:355:127299. doi: 10.1016/j.biortech.2022.127299. Epub 2022 May 10.

Authors

Nadeem Tahir¹, Faiqa Nadeem¹, Farzana Jabeen², Reeta Rani Singhania³, Umair Yaqub Qazi⁴, Anil Kumar Patel³, Rahat Javaid⁵, Quanguo Zhang⁶

Affiliations

¹ Collaborative Innovation Center of Biomass Energy, Henan Agricultural University, Zhengzhou 450002, China.
² Department of Computing, SEECS, National University of Sciences and Technology (NUST), Campus, Sector H-12, Islamabad, Pakistan.
³ Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan; Sustainable Environment Research Center, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan.
⁴ Chemistry Department, College of Science, Faculty & Personnel Affairs, University of Hafr Al Batin, P.O Box 1803, Hafr Al Batin 31991, Saudi Arabia.
⁵ Renewable Energy Research Center, National Institute of Advanced Industrial Science and Technology, AIST, 2-2-9 Machiikedai, Koriyama, Fukushima 963-0298, Japan.
⁶ Collaborative Innovation Center of Biomass Energy, Henan Agricultural University, Zhengzhou 450002, China. Electronic address: zquanguo@163.com.

PMID: 35562020
DOI: 10.1016/j.biortech.2022.127299

Abstract

The goal of this research was to study the role of excess charges in regulating biohydrogen production from Paulownia. The excess charges were generated through charge compensation in SnO₂ nanocatalysts by Zn doping. The maximum hydrogen yield of 335 mL was observed at 8%Zn doping with a concentration of 150 mg/L, 47% higher as compared to standard sample. It was observed that the hydrogen production rate increased with Zn doping and the highest value (77 mL/h) was observed for 8%Zn at 24 h. The decrease in the total amount of byproducts (2.52 g/L from 4.28 g/L) at 8% Zn indicates an increase in bacterial metabolism. The lowest value of oxidation-reduction potential (-525 mV) at 24 h for 8%Zn confirms that Zn doping provides excessive electrons to the fermentative medium which helps the bacteria to transfer electrons faster during the redox reaction, hence, enhancing the enzymatic process and eventually hydrogen production.

Keywords: Fermentative biohydrogen; Lignocellulosic biomass; Oxygen vacancies; SnO(2) nanocatalyst; The bandgap energy.

MeSH terms

Biomass
Fermentation
Hydrogen* / metabolism
Lignin* / metabolism
Zinc

Substances

lignocellulose
Hydrogen
Lignin
Zinc