Odour reduction of manure through addition of boracic charcoal
Laen...
Kuupäev
2018
Kättesaadav alates
Autorid
Hampejs, G.
Jäger, A.
Steiner, S.
Steiner, K.
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Abstrakt
Odours released during the land application of manure results from different gases
released from the liquid phase. These gases do create objectionable odours in the vicinity of the
land
-
applied manure. In order to reduce the intensity of odour durin
g manure application, we
investigated the effectiveness of combining Borkohle with manure during land application.
Boracic acid is widely used as a flame retardant in cellulose insulation. During demolition of
existing buildings, this insulation is sorted
into its own residual waste fraction. The cellulose
fibres are extracted and pelletized on site. Subsequently, the pellets are charred in a pyrolysis
furnace. The resulting Borkohle
–
charcoal containing boron in various compounds
-
can be used
as a soil e
nhancer and provides the trace element Boron to the fields. Furthermore, Borkohle
provides long
-
term storage of carbon in the soil. Initial trials of combining boracic charcoal with
manure additionally showed that odour emissions seemed to be significantly
lower when manure
was combined with
Borkohle.
This work presents methods to quantify the odour reductions resulting from the addition of
Borkohle to manure as well as first results. Parameters like the influence of the amount of charcoal
added and exposur
e time have been investigated.
Charcoal was added at concentrations between 5 and 250
g
L
-
1
. While applying typical amounts
of charcoal, a reduction of odour concentration of up to 85% was observed
. A positive correlation
between odour reduction and the amount of charcoal added was observed. Charcoal has a
negligible effect when exposure
times are less than 30 minutes.
Kirjeldus
Article
Märksõnad
olfactometer, charcoal, insulation materials, demolition materials, manure, articles