Emission Estimation Model of Dioxin / Furan Releases from Cement Industry Used Wastes in Co-Processing

Haruki Agustina, Haryoto Kusnoputranto, RTM Sutamiharja

Abstract


Dioxins/furans are chlorinated aromatic compounds which produced unintentionally from the combustion process, it has a very stable nature of the change, toxic, and does not easily decompose in a long period of time, will accumulate in the fatty tissue (lipophilicity) of living beings and can cause cancer. These compounds are belong to the group of  unintentionally persistent organic pollutants (U-POPs) that can be harmful to the environment and human health.

The increasing of cement demand requires the availability of natural raw materials and non-renewable energy as a factor of cement production. Utilization of wastes as fuels and alternative materials in co-processing in the cement industry in addition to having a positive impact as the conservation of natural resources and reduction of waste disposal to an environmental, will also have a negative effect that is emissions of dioxins/furans. There is not currently many laboratory facilities capable to measure emissions of dioxins/furans and method of UNEP toolkits generates the high estimated value of dioxins/furans to the environment. The purpose of this research was (1) to identify factors which influence the formation of dioxins /furans emissions from the cement industry which use waste as an alternative fuel, (2) create a model calculation of estimated emissions of dioxins/furans.  This study was a quantitative study which are in the form of statistical formulation.  The research is part of  non-experimental rearch with research survey sampling.  The result of this research showed that there are four external factors that can influence the formation of dioxins/furans, namely the amount of waste that used as an alternative fuel and emission discharge from kiln to chimney after cement production process.  These factors are the gas flow rate, temperature and moisture.  Model calculation for estimated emission of dioxins/furans 0.0599 + 0.00097 ln moisture - 0.0065 ln temperature + 0.000510 ln gas flow rate -0.00318 ln AFR show accurate results and accuracy close to the results of laboratory analysis. The calculation models already meet the sufficiency of the model (goodness of fit) because it was close to 100% (R-sq adjective amounted to 91.7%) with an error value (s) of 0.000581460.

Keywords: dioxins/furans, environment, persistent organic pollutant, model calculation


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ISSN : 2251-1563