The Point of Zero Charge of Coal Fly Ash due to Chicken Manures Addition and Incubation Time

Hermawan, Agus and Sabaruddin, Sabaruddin and Marsi, Marsi and Hayati, Renih (2013) The Point of Zero Charge of Coal Fly Ash due to Chicken Manures Addition and Incubation Time. In: International Seminar on Climate Change and Food Security, October 24-25, 2013, Palembang.

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    Fly ash as a coal combustion residue of thermal power plants has been regarded as a problematic solid waste all over the world. Due to the environmental problems created by large-scale fly ash generation, efforts are being made to recycle these materials. Generally, fly ash is a ferro-alumino-silicate mineral containing considerable quantities of Ca, K, and Na. They may, however, contain considerable quantities of minerals (aluminosilicate minerals like Mullite), which dissolve under strongly acidic conditions to provide liming function. Because of their chemical characteristics, fly ash have the potential to ameliorate soil chemical properties, such as the point of zero charge (PZC). Mixing fly ash with organic manure may enhanced the quality of the amelioran to improve the soils chemical properties. In the present study, the possibility to improving the status PZC in fly ash (FA) and chicken manure (CM) mixtures was investigated. Fly ash was mixed with organic matter in the form of cow chicken manure at 0:4, 1:3, 2:2, 3:1 and 4:0 ratios and incubated for 60 days. The FA+CM mixture with incubation time tended to decrease of the PZC status compared with the FA or CM alone. Among the different compositions of FA+CM mixtures, the 2:2 mixture at 45 days incubation time appeared to exhibit the lowest of the PZC compared with the other treatments. This composition could be use as an ameliorant to improve the soils chemical properties in terms of soil fertility and lowering PZC, and it is necessary for further research.

    Item Type: Conference or Workshop Item (Paper)
    Subjects: S Agriculture > S Agriculture (General)
    Divisions: Faculty of Agriculture > Department of Soil Science and Land Resources
    Depositing User: Dr Sabaruddin Kadir
    Date Deposited: 14 Jun 2017 10:46
    Last Modified: 14 Jun 2017 10:46

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