摘要：This paper regards the possibility of using geopolymer matrix
to immobilize heavy metals present in ash and slag from combustion
of medical waste. In the related research one used the fly ash from coal
combustion in one Polish CHP plant and the waste from two Polish
incineration plants. It was studied if the above-named waste materials
are useful in the process of alkali-activation. Therefore, two sets
of geopolymer mixtures were prepared containing 60 and 50% of ash
and slag from the combustion of medical waste. The remaining content was
fly ash from coal combustion. The alkali-activation was conducted by means
of 14M solution of NaOH and sodium water glass. The samples, whose
dimensions were in accordance with the EN 206-1 norm, were subjected
to 75°C for 24 h. According to the results, the geopolymer matrix is able
to immobilize heavy metals and retain compressive strength resembling
that of C8/10 type concrete.
其他摘要：This paper regards the possibility of using geopolymer matrix to immobilize heavy metals present in ash and slag from combustion of medical waste. In the related research one used the fly ash from coal combustion in one Polish CHP plant and the waste from two Polish incineration plants. It was studied if the above-named waste materials are useful in the process of alkali-activation. Therefore, two sets of geopolymer mixtures were prepared containing 60 and 50% of ash and slag from the combustion of medical waste. The remaining content was fly ash from coal combustion. The alkali-activation was conducted by means of 14M solution of NaOH and sodium water glass. The samples, whose dimensions were in accordance with the EN 206-1 norm, were subjected to 75°C for 24 h. According to the results, the geopolymer matrix is able to immobilize heavy metals and retain compressive strength resembling that of C8/10 type concrete.
