TY - JOUR
T1 - Filling in sewage sludge biodrying gaps: Greenhouse gases, volatile organic compounds and odour emissions
AU - González, Daniel
AU - Guerra, Nagore
AU - Colón, Joan
AU - Gabriel, D.
AU - Ponsá, Sergio
AU - Sánchez, Antoni
N1 - Publisher Copyright:
© 2019 Elsevier Ltd
PY - 2019/11/1
Y1 - 2019/11/1
N2 - © 2019 Elsevier Ltd In the present work, a complete study of the sewage sludge (SS) biodrying technology was conducted at bench-scale, aiming at assessing its performance and providing a valuable insight into the different gaseous emission patterns found for greenhouse gases (GHG) and odorant pollutants. As process key parameters, temperature, specific airflow, dynamic respiration index, final moisture content and Lower Calorific Value (LCV) were evaluated. At the end of the biodrying, a product with a 35.9% moisture content and a LCV of 7.1 MJ·kg−1product was obtained. GHGs emission factor was 28.22 kgCO2eq per Mg of initial mass of dry matter in the SS (DM0-SS). During the biodrying process, maximum odour concentration measured was 3043 ou·m−3 and the estimated odour emission factor of the biological treatment was 3.10E + 07 ou per Mg DM0-SS. Finally, VOCs were completely identified and quantified. The most abundant VOCs found in the biodrying gaseous emissions were terpenes, sulphur-compounds and ketones.
AB - © 2019 Elsevier Ltd In the present work, a complete study of the sewage sludge (SS) biodrying technology was conducted at bench-scale, aiming at assessing its performance and providing a valuable insight into the different gaseous emission patterns found for greenhouse gases (GHG) and odorant pollutants. As process key parameters, temperature, specific airflow, dynamic respiration index, final moisture content and Lower Calorific Value (LCV) were evaluated. At the end of the biodrying, a product with a 35.9% moisture content and a LCV of 7.1 MJ·kg−1product was obtained. GHGs emission factor was 28.22 kgCO2eq per Mg of initial mass of dry matter in the SS (DM0-SS). During the biodrying process, maximum odour concentration measured was 3043 ou·m−3 and the estimated odour emission factor of the biological treatment was 3.10E + 07 ou per Mg DM0-SS. Finally, VOCs were completely identified and quantified. The most abundant VOCs found in the biodrying gaseous emissions were terpenes, sulphur-compounds and ketones.
KW - Biodrying
KW - Gaseous emission
KW - Greenhouse gases (GHG)
KW - Odour
KW - Sewage sludge
KW - Sewage sludge
KW - Biodrying
KW - Gaseous emission
KW - Greenhouse gases (GHG)
KW - Odour
UR - http://www.scopus.com/inward/record.url?scp=85069970178&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2019.121857
DO - 10.1016/j.biortech.2019.121857
M3 - Article
C2 - 31377511
SN - 0960-8524
VL - 291
SP - 121857
JO - Bioresource Technology
JF - Bioresource Technology
M1 - 121857
ER -
