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http://hdl.handle.net/123456789/29812
Title: | Co-production of Biochar and Carbon Nanotube from Sewage Sludge in a Two-Stage Process Coupling Pyrolysis and Catalytic Chemical Vapor deposition |
Authors: | Mohd Syazwan Mohd Ghazali (UNIKL MICET) |
Issue Date: | 17-Apr-2024 |
Abstract: | This study explores the potential of valorizing sewage sludge as a carbon source for the co-production of biochar and carbon nanomaterial via a two-stage thermal-catalytic process. In the first stage, sewage sludge underwent slow pyrolysis, resulting in a biochar yield of 66% (in weight) at 550 °C. The resulting pyrolysis vapor was then introduced into a second reactor, where catalytic chemical vapor deposition (CCVD) took place in the presence of a cobalt catalyst, leading to the production of carbon nanotubes (CNTs). It was found that CNTs with an inner diameter of ~ 3.2 nm and an outer diameter of 20–40 nm can be formed in the second stage reactor at temperatures between 650 °C and 950 °C with a maximum yield of 30% (in weight) under the employed experimental conditions. The obtained CNTs displayed a multiwall structure, exhibited a lack of crystallinity, and demonstrated a high level of disorder. The research findings also indicate that temperature exerts a significant influence on both the yield and properties of the CNTs synthesized. |
Description: | This article is index by Scopus |
URI: | http://hdl.handle.net/123456789/29812 |
Appears in Collections: | Journal Articles |
Files in This Item:
File | Description | Size | Format | |
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Scopus March 2024_Part1.pdf | 183.88 kB | Adobe PDF | View/Open |
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