Effect of processing temperature applied to mixtures of sewage sludge and plant waste on the content of macro- and microelements in the product and on the luminescence of Vibrio fischeri
PBN-AR
Instytucja
Wydział Inżynierii Produkcji i Energetyki (Uniwersytet Rolniczy im. Hugona Kołłątaja w Krakowie)
Informacje podstawowe
Główny język publikacji
en
Czasopismo
Journal of Elementology
ISSN
1644-2296
EISSN
Wydawca
Polskie Towarzystwo Magnezologiczne
DOI
Rok publikacji
2016
Numer zeszytu
4
Strony od-do
1289-1303
Numer tomu
Identyfikator DOI
Liczba arkuszy
0.7
Autorzy
(liczba autorów: 4)
Pozostali autorzy
+ 3
Słowa kluczowe
en
biochar, sewage sludge, chemical composition, microtox test
Streszczenia
Język
en
Treść
The aim of the research was to determine the effect of temperature and addition of plant material to sewage sludge on the efficiency of thermal treatment of biomass. Another goal was to assess the content of selected macro- and microelements in the end product, taking into account the possibility of their agricultural use. The input material for the research consisted of anaerobically stabilized, dehydrated sewage sludge. The experimental design consisted of: sewage sludge + bark (SS + B), sewage sludge + wheat straw (SS + WS), sewage sludge + sawdust (SS + S). The mixtures were thermally treated in a chamber furnace, under anaerobic conditions. Two temperature settings were applied: 300ºC and 600ºC; the exposure time in both cases was 15 minutes. Thermal, anaerobic transformation of organic matter at a temperature up to 600oC causes even a twofold increase in the content of ash elements in the product. An increase in the nitrogen content can only be obtained under conditions of low-temperature transformation of a mixture of sewage sludge with organic materials. Using the temperature of 600oC for the transformation of organic materials caused an increase in the content of easily hydrolyzing nitrogen as well as forms of phosphorus, potassium and sodium extracted with water in comparison to mixtures transformed at the temperature of 300oC. Of the analyzed trace elements, only the content of water-soluble forms of zinc (apart from mixture of sewage sludge and straw) increased along with the increase in temperature of the transformation process, which indicates higher zinc bioavailability. In terms of fertilization, as a result of increasing the processing temperature applied to sewage sludge with the addition of different mass of plant origin, a lower value product is obtained due to nitrogen losses and a decrease in the availability of some elements for plants. The extracts from the mixtures were not toxic to bacteria. Stimulation of the luminescence of V. fischeri was observed in the research.
Inne
System-identifier
URaa1d8b8669164be2a3e098158f08bcb3
CrossrefMetadata from Crossref logo
Cytowania
Liczba prac cytujących tę pracę
Brak danych
Referencje
Liczba prac cytowanych przez tę pracę
Brak danych