| dc.creator |
Saidy, Akhmad Rizali |
|
| dc.date.accessioned |
2020-06-15T04:04:54Z |
|
| dc.date.available |
2020-06-15T04:04:54Z |
|
| dc.identifier |
http://eprints.ulm.ac.id/8806/1/02.%20AkhmadRSaidy%20%282015%29%20-%20Microbial%20degradation%20of%20organic%20carbon%20sorbed%20to%20phyllosilicate%20clays%20with%20and%20without%20hydrous%20iron%20oxide%20coating.pdf |
|
| dc.identifier |
Saidy, Akhmad Rizali Microbial degradation of organic carbon sorbed to phyllosilicate clays with and without hydrous iron oxide coating. European Journal of Soil Science. |
|
| dc.identifier.uri |
https://repo-dosen.ulm.ac.id//handle/123456789/13885 |
|
| dc.description |
Sorption of organic carbon (OC) to phyllosilicate clays and hydrous iron oxides retards its mineralization, thus
contributing to stabilization of organic carbon in soils. The degree of protection varies with the nature of the
minerals present. In a previous study, we reported that when the amount of OC exceeds the sorption capacity of
minerals, the rate of OC mineralization is determined primarily by mineral surface area. Here, we report on OC
mineralization under conditions of less OC loading and with OC pre-sorbed to the mineral surfaces. The same
suite of minerals (kaolinite, illite and smectite with and without goethite coating and illite coated with haematite,
goethite and ferrihydrite) was used as in the previous study. The stability of sorbed OC decreased in the order
kaolinite>illite>smectite amongst the uncoated clays. Goethite coating of kaolinite and smectite increased the
stability of sorbedOMagainst microbial decomposition, while the stability of illite-associated OC did not change
with goethite coating. For illite coated with different hydrous iron oxides, only ferrihydrite increased the stability
of sorbed OC against microbial decomposition. These differences reflect closely the differences in the strength
and reversibility of OC sorption, as measured in previous batch sorption experiments on these systems, rather
than reflecting differences in mineral surface area. These findings demonstrate that at relatively small loadings of
OC, the degree of protection of sorbed OC provided by mineral surfaces is controlled primarily by the strength
of organo–mineral associations. |
|
| dc.format |
text |
|
| dc.relation |
https://onlinelibrary.wiley.com/page/journal/13652389/homepage/editorialboard.html |
|
| dc.relation |
http://eprints.ulm.ac.id/8806/ |
|
| dc.subject |
S Agriculture (General) |
|
| dc.title |
Microbial degradation of organic carbon sorbed to
phyllosilicate clays with and without hydrous iron oxide
coating |
|
| dc.type |
Article |
|
| dc.type |
PeerReviewed |
|