Analysis the sewage sludge recycling strategy based on real-time pyrolysis performance and pyrochar characteristics

Chen, Jingjing1,2; Zheng, Yuping1; Lv, Mengyan1; Zhao, Tingting1; Lin, Qingqi1; Ni, Zhuobiao1; Zhang, Zuotai2; Qiu, Riongliang1

2024-10-01

10.1016/j.jclepro.2024.143540

JOURNAL OF CLEANER PRODUCTION   影响因子和分区

0959-6526

1879-1786

Co-pyrolysis with waste biomass is an effective strategy for the disposal of huge amounts of sewage sludge. A thermogravimetric-infrared-mass spectrometry real-time monitoring system is utilized to study the co-pyrolysis of sludge and coffee grounds (CG). By fitting thermodynamic models, the addition of CG favored the thermal initiation process by increasing the effective collision frequency required. The release of NO2, SO2, C2HCl3, and C6H6 was concentrated at 330-500 degrees C and was suppressed when the blending ratio (CG: sludge) was 3:7. Furthermore, as pyrolysis proceeding, the P form in the pyrochar converted from poly-P to pyrophosphate or AlP, and eventually to Ca-P. The blending of CG as calcium source furthered the proportion of Ca(H2PO4)2 reached up to 44% when the blending ratio was 3:7 at pyrolysis temperature of 500 degrees C. Therefore, the quality of the value-added product (pyrochar) was related to the pyrolysis temperature, while the mitigation of volatiles was more influenced by the blending ratio of biomass. By studying the co-pyrolysis process, we deepen the understanding of the effect of waste biomass on sewage sludge treatment, and laid the foundation for optimizing the means of pyrolysis treatment, controlling the co-pyrolysis as well as resource utilization.

Sewage sludge Co-pyrolysis In situ infrared Thermodynamic models Phosphorus transformation

SCI

英语

通讯

Key Realm Research and Development Program of Guangdong Province["2023B0202020001","2020B0202080001"] ; Guangdong Laboratory for Lingnan Modern Agriculture Project[NT2021010] ; Guangdong Provincial Science and Technology Plan Project[2021B1212040008] ; Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture[2022ZD001] ; Heyuan Branch, Guangdong Laboratory for Lingnan Modern Agriculture Project[DT20220002] ; Shenzhen Science and Technology Innovation Committee["JCYJ20200109141227141","JCYJ20200109141642225"]

Science & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology

Green & Sustainable Science & Technology ; Engineering, Environmental ; Environmental Sciences

WOS:001309005200001

ELSEVIER SCI LTD

Web of Science

1.South China Agr Univ, Coll Nat Resources & Environm, Guangdong Lab Lingnan Modern Agr, Guangdong Prov Key Lab Agr & Rural Pollut Abatemen, Guangzhou 510642, Peoples R China
2.Southern Univ Sci & Technol, Sch Environm Sci & Engn, Guangdong Prov Key Lab Soil & Groundwater Pollut, Shenzhen 518055, Peoples R China

Chen, Jingjing,Zheng, Yuping,Lv, Mengyan,et al. Analysis the sewage sludge recycling strategy based on real-time pyrolysis performance and pyrochar characteristics[J]. JOURNAL OF CLEANER PRODUCTION,2024,473.

Chen, Jingjing.,Zheng, Yuping.,Lv, Mengyan.,Zhao, Tingting.,Lin, Qingqi.,...&Qiu, Riongliang.(2024).Analysis the sewage sludge recycling strategy based on real-time pyrolysis performance and pyrochar characteristics.JOURNAL OF CLEANER PRODUCTION,473.

Chen, Jingjing,et al."Analysis the sewage sludge recycling strategy based on real-time pyrolysis performance and pyrochar characteristics".JOURNAL OF CLEANER PRODUCTION 473(2024).