Comparative evaluation of the use of acidic additives on sewage sludge composting quality improvement, nitrogen conservation, and greenhouse gas reduction

Bioresource Technology
Junting PanLimei Zhai

Abstract

The aim of this study was investigated the effects of acidic additives apple pomace (AP), citric acid (CA), elemental sulphur (ES), phosphoric acid (PA), magnesium hydrogen phosphate (PM), and calcium superphosphate (CP)) on N conservation and greenhouse gas (GHG) emissions during sewage sludge composting. Results showed that adding the additives have no negative effects on compost hygienisation, but could improve the N conservation. Treatments with additives showed 2.56-5.48% N loss of initial N, which is lower than the control (9.73%). Compared to other compost products, ES- and PA-treatments had the lower NH3 volatilizations (0.80% and 0.98% of initial N, respectively) and germination index values (0.52 and 0.74, respectively), while the higher N2O emissions (2.48% and 2.29% of initial N, respectively) and salinities. Comprehensive evolution of N loss, GHG emissions and compost maturity in this study, the feasibility of using AP, CA, and PM in high-quality compost production is promising.

Citations

Aug 23, 2019·Water Environment Research : a Research Publication of the Water Environment Federation·Kari Fitzmorris Brisolara, John Bourgeois
Oct 19, 2019·International Journal of Environmental Research and Public Health·Yue WangHongmin Dong
Feb 2, 2020·Applied Biochemistry and Biotechnology·Guo Yong YewJo-Shu Chang
Aug 23, 2020·Environmental Science and Pollution Research International·Yunbei LiJishao Jiang
Jan 7, 2021·Environmental Science and Pollution Research International·Shuyan LiYaya Wang
Dec 11, 2020·Bioresource Technology·Shiyi QinMohammad J Taherzadeh
Aug 15, 2021·Environmental Research·Muhammad Numan KhanAvelino Núñez-Delgado
Sep 11, 2021·Environmental Science and Pollution Research International·Mingyue XuChuanfu Wu

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