TY - JOUR
T1 - Effect of microplastics on greenhouse gas and ammonia emissions during aerobic composting
AU - Sun, Yue
AU - Ren, Xiuna
AU - Pan, Junting
AU - Zhang, Zengqiang
AU - Tsui, To Hung
AU - Luo, Liwen
AU - Wang, Quan
N1 - Funding information:
We acknowledge the support provided by the Postdoctoral Science Foundation of China (No. 2019M653765), Ph.D start-up fund of Northwest A&F University (No. 2452018111) and National Natural Foundation of China (No. 31902122).
Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2020/10/1
Y1 - 2020/10/1
N2 - The aim of this study was to investigate the effect of polyethylene (PE), polyvinyl chloride (PVC) and polyhydroxyalkanoate (PHA) microplastics on greenhouse gas and ammonia emissions during 60 days composting. PE, PVC and PHA microplastics were respectively mixed with the cow manure; and a treatment without microplastics was used as the control. Compared to the control, PE and PVC inhibited organic matter degradation. Conversely, PHA accelerated temperature increases and organic matter degradation. Meanwhile, PE and PHA aggravated CH4 and NH3 emissions by 7.9–9.1% and 20.9–33.9%, respectively. PVC decreased CH4 and NH3 emissions by 6.6% and 30.4%, respectively. Additionally, the N2O emissions of the PE and PVC treatments were higher than those of the control while PHA decreased N2O emissions by 11.8%. Furthermore, PE, PVC and PHA microplastics reduced the NO3−-N contents and compost maturity. The results indicated that microplastics reduced compost quality while the effects of microplastics on greenhouse gases and ammonia emissions were related to their sources.
AB - The aim of this study was to investigate the effect of polyethylene (PE), polyvinyl chloride (PVC) and polyhydroxyalkanoate (PHA) microplastics on greenhouse gas and ammonia emissions during 60 days composting. PE, PVC and PHA microplastics were respectively mixed with the cow manure; and a treatment without microplastics was used as the control. Compared to the control, PE and PVC inhibited organic matter degradation. Conversely, PHA accelerated temperature increases and organic matter degradation. Meanwhile, PE and PHA aggravated CH4 and NH3 emissions by 7.9–9.1% and 20.9–33.9%, respectively. PVC decreased CH4 and NH3 emissions by 6.6% and 30.4%, respectively. Additionally, the N2O emissions of the PE and PVC treatments were higher than those of the control while PHA decreased N2O emissions by 11.8%. Furthermore, PE, PVC and PHA microplastics reduced the NO3−-N contents and compost maturity. The results indicated that microplastics reduced compost quality while the effects of microplastics on greenhouse gases and ammonia emissions were related to their sources.
KW - Ammonia emission
KW - Compost maturity
KW - Composting
KW - Greenhouse gas
KW - Microplastics
UR - http://www.scopus.com/inward/record.url?scp=85086437381&partnerID=8YFLogxK
U2 - 10.1016/j.scitotenv.2020.139856
DO - 10.1016/j.scitotenv.2020.139856
M3 - Journal article
C2 - 32563113
AN - SCOPUS:85086437381
SN - 0048-9697
VL - 737
JO - Science of the Total Environment
JF - Science of the Total Environment
M1 - 139856
ER -
