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@ARTICLE{Castroherrera:1007375,
author = {Castro herrera, Daniela and Prost, Katharina and Kim,
Dong-Gill and Yimer, Fantaw and Tadesse, Menfese and
Gebrehiwot, Mersha and Brüggemann, Nicolas},
title = {{B}iochar addition reduces non‐{CO} 2 greenhouse gas
emissions during composting of human excreta and cattle
manure},
journal = {Journal of environmental quality},
volume = {52},
number = {4},
issn = {0047-2425},
address = {Hoboken, NJ},
publisher = {Wiley},
reportid = {FZJ-2023-02040},
pages = {814-828},
year = {2023},
abstract = {Ecological sanitation combined with thermophilic composting
is a viable option to transform human excreta into a
stabilized, pathogen-free, and nutrient-rich fertilizer. In
combination with suitable bulking materials such as sawdust
and straw, and additives such as biochar, this could also be
a suitable waste management strategy for reducing greenhouse
gas (GHG) emissions. In this study, we conducted a 143-days
thermophilic composting of human excreta or cattle manure
together with teff straw, organic waste, and biochar to
investigate the effect that biochar has on GHG (CO2, N2O,
and CH4) and NH3 emissions. The composting was performed in
wooden boxes (1.5 × 1.5 × 1.4 m3), GHG were measured by
using a portable FTIR gas analyzer and NH3 was sampled as
ammonium in an H2SO4 trap. We found that the addition of
biochar significantly reduced CH4 emissions by $91\%$ in the
cattle manure compost, and N2O emissions by $56\%−57\%$ in
both humanure and cattle manure composts. Overall, non-CO2
GHG emissions were reduced by $51\%−71\%.$ In contrast, we
did not observe a significant biochar effect on CO2 and NH3
emissions. Previous data already showed that it is possible
to sanitize human fecal material when using this composting
method. Our results suggest that thermophilic composting
with biochar addition is a safe and cost-effective waste
management practice for producing a nutrient-rich fertilizer
from human excreta, while reducing GHG emissions at the same
time.},
cin = {IBG-3},
ddc = {630},
cid = {I:(DE-Juel1)IBG-3-20101118},
pnm = {2173 - Agro-biogeosystems: controls, feedbacks and impact
(POF4-217)},
pid = {G:(DE-HGF)POF4-2173},
typ = {PUB:(DE-HGF)16},
pubmed = {37117005},
UT = {WOS:000991481300001},
doi = {10.1002/jeq2.20482},
url = {https://juser.fz-juelich.de/record/1007375},
}