Wyniki wyszukiwania - Biblioteka Nauki

Ten serwis zostanie wyłączony 2025-02-11.

Nowa wersja platformy, zawierająca wyłącznie zasoby pełnotekstowe, jest już dostępna.
Przejdź na https://bibliotekanauki.pl

Ograniczanie wyników

1 Polish Journal of Environmental Studies

1 2006

Znaleziono wyników: 1

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

Influence od the treatment process on nitrogen content in humic acids extracted from sewage sludge

100%

Polak J. , Sulkowski W. W.

Polish Journal of Environmental Studies

2006

tom 15

nr 4

Humic-like substances (HA) were extracted from sludge from three sewage treatment plants with different treatment technologies. Investigations of the extracted humic-like substances (HA) were carried out by means of elementary analysis and spectroscopic methods. Results of elementary analysis show that the percentage content of nitrogen is different for HA extracted from sludge derived from the subsequent treatment stages. The influence of the treatment process on nitrogen content also was observed. The percentage content of nitrogen was of the range from 5.05% to 8.99%. The highest value of nitrogen for HA extracted from sludge was obtained from the nitrification and denitrification chamber. The spectroscopic methods confirmed the presence of nitrogen functional groups.