engleski

Potential of use wood biomass ash in the cement composites

Due to high energy dependency, the European Union´s policy is turned to promotion of the use of renewable energy throughout directives with culmination with the agreement at the 21st Conference of the Parties (COP21) in Paris. Within, European Union (EU) has put forward the share of renewable energy increasing to at least a 27 % until 2030. Among these resources, biomass as forestry and agricultural waste, and power plants fuelled by them are a promising source of renewable energy. As one of the consequences of development and investment in the biomass renewable energy is increasing the amount of ash, including wood biomass ash (WBA). During the bioenergy production, ash as a by- product is a major environment pollutant and health hazard in the absence of emission controls, most of which are very expensive. Therefore, it is necessary to establish the sustainable ash management, which is major challenge in the bioenergy production. One of possible solution for its management is utilization of WBA in the construction. This paper describes the process in the biomass power plants which affects on the WBA properties, problems regarding WBA management and the possibility of its application in construction industry, particularly with regard to the concrete industry. POTENCIJAL UPOTREBE PEPELA OD DRVNE BIOMASE U CEMENTNIM KOMPOZITIMA SAŽETAK: Zbog velike ovisnosti o energiji politika Europske unije usmjerena je na promidžbu upotrebe obnovljive energije u direktivama što je doseglo vrhunac u sporazumu na 21. konferenciji (COP21) sudionika u Parizu. Prema sporazumu, cilj je da se u Europskoj uniji udio obnovljive energije poveća do najmanje 27 % do 2030. godine. Obećavajući izvori obnovljive energije su, između ostalih, biomasa iz šumskog i poljoprivrednog otpada i energane koje kao gorivo koriste te materijale. Jedna od posljedica razvoja i investiranja u obnovljivu energiju iz biomase povećana je količina pepela, uključujući pepeo iz drvne biomase (engl. wood biomass ash, WBA). Tijekom proizvodnje bioenergije pepeo je kao nusproiuzvod glavni onečišćivač okoliša i zdravstvena opasnost ako nema kontrole emisije od kojih je većina vrlo skupa. Stoga je nužno uspostaviti održivo upravljanje pepelom koji je glavni izazov u proizvodnji bioenergije. Jedno od mogućih rješenja za upravljanje njime upotreba je pepela u gradnji. U radu se opisuje proces u pogonu energane na biomasu koji utječe na svojstva pepela, problemi koji se odnose na upravljanje pepelom i mogućnost njegove primjene u građevinskoj industriji, posebno u industriji betona.

renewable energy sources, biomass, sustainable management, wood biomass ash, concrete industry

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