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Enhanced CO 2 Capture Performance of Limestone by Industrial Waste Sludge
Author(s) -
Hu Ying-chao,
Liu Wen-qiang,
Yang Yuan-dong,
Sun Jian,
Zhou Zi-jian,
Xu Ming-hou
Publication year - 2017
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201700100
Subject(s) - sorbent , waste management , reuse , inert , raw material , sintering , sewage sludge , environmental science , materials science , sewage treatment , chemistry , adsorption , metallurgy , engineering , organic chemistry
Although inert supports have been proved effective to enhance CO 2 capture performance of CaO sorbents, more commonly used supports are derived from expensive raw materials such as nitrates and organometallic precursors. Cheap waste sludge from the steel plant was utilized, which has a high daily output and has not received effective reuse, to promote the CO 2 capture performance. The results showed that the sludge effectively promoted the performance of limestone. Homogeneously dispersed inert material of MgO, acting as the metal framework to resist sintering, was responsible for the enhanced performance. The introduction of waste sludge into the calcium looping could not only improve the sorbent performance, but also provide a potentially effective way to reuse the waste sludge.