Open AccessReduction in carbon dioxide and methane production of tropical peatlands due to coal fly-ash application
Author(s) -
Akhmad Rizalli Saidy,
Bambang Joko Priatmadi,
Meldia Septiana
Publication year - 2022
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/976/1/012022
Subject(s) - peat , carbon dioxide , coal , environmental chemistry , chemistry , methane , carbon fibers , environmental science , fly ash , ecology , materials science , organic chemistry , composite number , composite material , biology
Tropical peatlands with very high organic carbon (C) contents have the potential to be a source of carbon dioxide (CO 2 ) and methane (CH 4 ) production. Therefore, the management of tropical peatlands is essential to prevent peat decomposition and to reduce the production of CO 2 and CH 4 . We added different amounts of coal fly-ash (CFA) (0, 25, 50, 75, 100 and 125 Mg ha −1 ) to tropical peats in a laboratory study to quantify changes in CO 2 and CH 4 production in response to the application of CFA. The amounts of CO 2 and CH 4 produced by the mixtures of peats and CFA over 90 days were monitored on weekly basis. Peat pH, concentrations of hot-water soluble C, calcium and iron were also measured at the end of incubation period. Results of study revealed that the application of CFA up to 50 Mg ha −1 did not change the production of CO 2 and CH 4 , while the application of CFA by 50–125 Mg ha −1 reduced 12–24% of CO 2 and 9–15% of CH 4 . The decrease in the production of CO 2 and CH 4 due to the relatively high amount of CFA application was related to the decrease in the amount of hot soluble organic C and the increase in the concentrations of Ca and Fe. This study demonstrates the potential of CFA as waste materials from coal processing of power plants in reducing CO 2 and CH 4 emissions of tropical peatlands.