Hydrothermal Carbonization of Sewage Sludge: Analysis of Process Severity and Solid Content

被引：29
作者：
Tasca, Andrea Luca [1 ,4 ]
Stefanelli, Eleonora [1 ,4 ]
Raspolli Galletti, Anna Maria [2 ,4 ]
Gori, Riccardo [3 ,4 ]
Mannarino, Gemma [3 ,4 ]
Vitolo, Sandra [1 ,4 ]
Puccini, Monica [1 ,4 ]
机构：
[1] Univ Pisa, Dept Civil & Ind Engn, I-56122 Pisa, Italy
[2] Univ Pisa, Dept Chem & Ind Chem, Via G Moruzzi 13, I-56124 Pisa, Italy
[3] Univ Florence, Dept Civil & Environm Engn, Via S Marta 3, I-50139 Florence, Italy
[4] Italian Consortium Mat Sci & Technol INSTM, Via G Giusti 9, I-50121 Florence, Italy
来源：
CHEMICAL ENGINEERING & TECHNOLOGY | 2020年 / 43卷 / 12期
关键词：
Dewaterability; Hydrothermal carbonization; Response surface methodology; Sewage sludge; Specific resistance to filtration; CONVERSION; ACID;
D O I：
10.1002/ceat.202000095
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Hydrothermal carbonization of sewage sludge was carried out with the aim to evaluate the influence of process severity and initial solid content. Response surface methodology was applied to model yield and C yield responses. Enhanced dewaterability performance was recorded under mild processing conditions. The treatment promoted concentration and immobilization of Pb, Cd, Ni, Zn, and Cu. Variation of the solid content showed a stronger influence than severity on average yield and C yield. Higher heating values (HHVs) and energy retention efficiencies (EREs) of hydrochars obtained at the lowest solid content displayed the lowest values. Hence, the energy requirements of a first dewatering step should be compared with the related improvement in terms ofHHVandEREwhen sludge is used as feedstock.
引用
收藏
页码：2382 / 2392
页数：11
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