Formation and destruction of chlorinated pollutants during sewage sludge incineration

被引:83
作者
Fullana, A
Conesa, JA
Font, R
Sidhu, S
机构
[1] Univ Dayton, Dayton, OH 45469 USA
[2] Univ Alicante, Dept Chem Engn, E-03080 Alicante, Spain
关键词
D O I
10.1021/es034896u
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The limitations facing land filling and recycling and the planned ban on sea disposal of sludge leads to the expectation that the role of sludge incineration will increase in the future. The expected increase in sludge incineration will also increase scrutiny of the main drawback to sewage sludge incineration-the formation of hazardous air pollutants (HAPs). Despite the extensive body of knowledge available on sewage sludge combustion, very few studies have been conducted on the formation of HAPs during sludge combustion. In this work, the interactions between sewage sludge pyrolysis products and sludge ash were investigated using a dual chamber flow reactor system and a horizontal laboratory scale reactor. The results of this study shows that sludge ash can catalyze oxidation and chlorination of organics. In the absence of HCI in the gas stream, sludge ash acts as an oxidizing catalyst, but in the presence of HCI, sludge ash acts as a chlorination catalyst producing high yields of organochloride compounds.
引用
收藏
页码:2953 / 2958
页数:6
相关论文
共 22 条
[1]   FORMATION OF POLYCHLORINATED DIBENZO-P-DIOXINS DIBENZOFURANS ON FLY-ASH FROM PRECURSORS AND CARBON MODEL COMPOUNDS [J].
ADDINK, R ;
CNUBBEN, PAJP ;
OLIE, K .
CARBON, 1995, 33 (10) :1463-1471
[2]  
[Anonymous], 1999, ENV EUR UN TURN CENT
[3]  
[Anonymous], TOXICS RELEASE INVEN
[4]   FLY-ASH MEDIATED REACTIONS OF PHENOL AND MONOCHLOROPHENOLS - OXYCHLORINATION, DEEP OXIDATION, AND CONDENSATION [J].
BORN, JGP ;
MULDER, P ;
LOUW, R .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1993, 27 (09) :1849-1863
[5]  
Düring RA, 2002, J PLANT NUTR SOIL SC, V165, P544, DOI 10.1002/1522-2624(200208)165:4<544::AID-JPLN544>3.0.CO
[6]  
2-#
[7]   Mechanisms of the formation of polychlorinated benzenes and phenols by heterogeneous reactions of C-2 aliphatics [J].
Froese, KL ;
Hutzinger, O .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1997, 31 (02) :542-547
[8]   Polychlorinated benzene, phenol, dibenzo-p-dioxin, and dibenzofuran in heterogeneous combustion reactions of acetylene [J].
Froese, KL ;
Hutzinger, O .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1996, 30 (03) :998-1008
[9]   Pyrolysis of sewage sludge:: nitrogenated compounds and pretreatment effects [J].
Fullana, A ;
Conesa, JA ;
Font, R ;
Martin-Gullón, I .
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS, 2003, 68-9 :561-575
[10]   ON THE MECHANISMS OF DIOXIN FORMATION IN COMBUSTION PROCESSES [J].
HUANG, H ;
BUEKENS, A .
CHEMOSPHERE, 1995, 31 (09) :4099-4117