Comparative study for fluidized bed pyrolysis of textile dyeing sludge and municipal sewage sludge

被引：67

作者：

Liu, Yang ^{[1
,2
,3
]}

Ran, Chunmei ^{[1
,2
]}

Siyal, Asif Ali ^{[1
,2
]}

Song, Yongmeng ^{[1
,2
]}

Jiang, Zhihui ^{[1
,2
]}

Dai, Jianjun ^{[1
,2
]}

Chtaeva, Polina ^{[1
,2
]}

Fu, Jie ^{[1
,2
]}

Ao, Wenya ^{[1
,2
,3
]}

Deng, Zeyu ^{[1
,2
]}

Zhang, Tianhao ^{[1
,2
]}

机构：

[1] Beijing Univ Chem Technol, State Key Lab Organ Inorgan Composites, Beijing 100029, Peoples R China

[2] Beijing Univ Chem Technol, Coll Chem Engn, Beijing 100029, Peoples R China

[3] Beijing Univ Chem Technol, Beijing Adv Innovat Ctr Soft Matter Sci & Engn, Beijing 100029, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2020年 / 396卷

关键词：

Fluidized bed; Pyrolysis; Textile dyeing sludge; Municipal sewage sludge; Comparative study; SULFUR TRANSFORMATION; BIO-OIL; BIOCHAR; MICROWAVE; BIOMASS; CARBONIZATION; INCINERATION; GASIFICATION; TEMPERATURE; PERFORMANCE;

D O I：

10.1016/j.jhazmat.2020.122619

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A comparative research was performed to evaluate the products yields and chars properties for pyrolysis of textile dyeing sludge (TDS) and municipal sewage sludge (MSS). The high fixed carbon (19.36 wt%) and low volatile (23.66 wt%) contents of TDS resulted in higher char yields and lower condensate yields. TDS char (TC) had a higher sulfur (S) retention efficiency than MSS char (MC) and CaO exhibited a great S retention effect in MC. More alkali and alkaline earth metals (e.g. Na, K, Mg and Ca) in MSS contributed to enhanced catalytic pyrolysis. In comparison to non-catalytic pyrolysis, chars from catalytic pyrolysis had lower iodine number and higher methylene blue (MB) adsorption value. MB adsorption values of MC (212.28-414.20 mg/g) were much higher than those of TC (84.32-156.07 mg/g). In contrast, heavy metals risk degrees of MC (4.20-7.56) were lower than those of TC (7.55-12.87), and heavy metals in TC and MC showed slight risks to environment.

引用

页数：14

共 54 条

[31] Screw pyrolysis technology for sewage sludge treatment [J].