Open AccessWaveguide measurements of biochar derived from sewage sludge
Author(s) -
Savi P.,
Yasir M.
Publication year - 2020
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2019.4103
Subject(s) - biochar , sewage sludge , materials science , dissipation , filler (materials) , environmentally friendly , composite material , electromagnetic shielding , waveguide , epoxy , pyrolysis , carbon fibers , composite number , sewage , waste management , environmental science , environmental engineering , optoelectronics , engineering , ecology , physics , biology , thermodynamics
Composites based on biochar derived from sewage sludge as filler in epoxy resin are fabricated and measured in a waveguide in C‐band. Biochar is cheap, readily available and environmentally friendly and thus is a very good contender among other carbon‐based materials for use in shielding applications. Biochar provide promising results in term of transmission of <−10 dB for a composite with 20 wt.% biochar filler. The dissipation loss, calculated from the scattering parameters show that a significant portion of the losses are due to dissipation.