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Thermogravimetric Analysis of Textile Dyeing Sludge (TDS) in N 2 /CO 2 /O 2 Atmospheres and its Combustion Model with Coal
Author(s) -
Zhuo Zhongxu,
Liu Jingyong,
Sun Shuiyu,
Kuo Jiahong,
Sun Jian,
Chang KenLin,
Fu Jiewen
Publication year - 2018
Publication title -
water environment research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.356
H-Index - 73
eISSN - 1554-7531
pISSN - 1061-4303
DOI - 10.2175/106143017x15054988926514
Subject(s) - thermogravimetric analysis , combustion , heat of combustion , pyrolysis , coal , chemistry , analytical chemistry (journal) , activation energy , waste management , materials science , environmental chemistry , nuclear chemistry , organic chemistry , engineering
The combustion characteristics of textile dyeing sludge (TDS) in N 2 /O 2 , CO 2 /O 2 , and N 2 /CO 2 atmospheres, and blends of TDS with coal were analyzed using TGA (thermogravimetric analysis). Results showed that the replacement of N 2 by CO 2 resulted in negative effects on the combustion and pyrolysis of TDS. Comparing N 2 /O 2 and CO 2 /O 2 atmospheres, combustion of TDS was easier in a N 2 /O 2 atmosphere, but the residual mass after TDS pyrolysis in pure CO 2 was less than that in N 2 by approximately 4.51%. When the proportion of TDS was 30–50% in the blends of coal with TDS, a synergistic interaction clearly occurred, and it significantly promoted combustion. In considering different combustion parameters, the optimal proportion of TDS may be between 20–30%. The activation energy E a value decreased from 155.6 kJ/mol to 53.35 kJ/mol with an increasing TDS proportion from 0% to 50%, and it rapidly decreased when the TDS proportion was below 20%.