Superior visible-light photocatalytic activity of biocarbon derived from sewage sludge in the absence of active phase for hydrogen production

Omid Norouzi, Amanj Kheradmand, Yijiao Jiang, Francesco Di Maria*, Federico Sisani, Ondrej Masek

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract / Description of output

Sewage sludge, a bioproduct generated in surplus amount from the domestic wastewater treatment has always been a chief environmental concern. Thermochemical and biological conversion of Sewage sludge into the valuable products can be an effective and efficient alternative strategy than conventional disposal method. Herein, Sewage sludge was pyrolyzed at highest treatment temperature of 700 °C in rotary kiln pilot-scale pyrolysis unit (Stage III) at the UKBRC, University of Edinburgh to obtain biochar, bio-oil and biogas. Basic utility properties of Sewage sludge biochar (SS700) such as CHNS, functional group, crystalline structure, electric conductivity, Polycyclic Aromatic Hydrocarbons, Dioxin/Furan and Polychlorinated Biphenyls were determined and then SS700 was utilized for photocatalytic hydrogen generation. Photocatalytic H2 production of SS700 was studied under visible-light irradiation. The H2 yield was 3331 μmol/g which is higher than its conventional carbon-based competitors (i.e. Graphene, CNTs and C3N4). In order to justification of superior activity of SS700, photocurrent measurements were carried out and ultraviolet-visible (UV-vis) diffuse reflectance spectra were recorded. The superior activity is attributed to its aromatic carbon structure, high surface area, inorganic materials, electron-conductive nature and hydrophilic surface functional group. This work introduces SS700 as a low-cost, stable, environmentally friendly, and sustainable method which can be a great leap forward toward the more sustainable energy development.

Original languageEnglish
Title of host publication74th ATI National Congress
Subtitle of host publicationEnergy Conversion: Research, Innovation and Development for Industry and Territories
EditorsGiuseppe Cantore, Carlo Alberto Rinaldini, Giulio Allesina, Simone Pedrazzi
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735419384
DOIs
Publication statusPublished - 17 Dec 2019
Event74th Conference of the Italian Thermal Machines Engineering Association, ATI 2019 - Modena, Italy
Duration: 11 Sept 201913 Sept 2019

Publication series

NameAIP Conference Proceedings
Volume2191
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference74th Conference of the Italian Thermal Machines Engineering Association, ATI 2019
Country/TerritoryItaly
CityModena
Period11/09/1913/09/19

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