Fraction Distribution Changes of Heavy Metals in Co-Pyrolysis of Sewage Sludge and Corn Straw
2011 ◽
Vol 236-238
◽
pp. 187-191
◽
Keyword(s):
Icp Ms
◽
Maiz’s short sequential extraction procedure was used to extract the heavy metals in the carbon residues made from sewage sludge by co-pyrolysis with corn straw. The content of heavy metals in the residues was determined by ICP-MS to study the fraction distribution changes of heavy metals. It is concluded that the content of mobile and mobilization heavy metals exsisted in the residue decrease and the content of residual heavy metals increase due to the co-pyrolysis. The co-pyrolysis temperature has great effect on the fraction distribution changes of heavy metals. The content of residual fraction for Cr, Ni, Pb is up to the top at 700°C and for Cd、Cu、Zn is at 500°C. The carbon residues are unhazardous and safe.
2009 ◽
Vol 163
(2-3)
◽
pp. 1157-1164
◽
1985 ◽
Vol 17
(4-5)
◽
pp. 587-598
◽
2019 ◽
Vol 24
(1)
◽
pp. 23
2013 ◽
Vol 27
(2)
◽
2011 ◽
Vol 98
(2)
◽
pp. 234-239
◽
2007 ◽
Vol 135
(1-3)
◽
pp. 265-280
◽
Keyword(s):
2009 ◽
Vol 57
(2)
◽
pp. 215-230
◽