Modified montmorillonite and illite adjusted the preference of biotic and abiotic pathways of humus formation during chicken manure composting.
Bioresour Technol
; 319: 124121, 2021 Jan.
Article
in En
| MEDLINE
| ID: mdl-32957045
ABSTRACT
The study aimed to identify the preference of pathways of humus formation. Five lab-scale composting experiments were established the control (CK), montmorillonite addition (M), illite addition (I), thermal treatment montmorillonite addition (M-) and thermal treatment illite addition (I-). Results showed humus content was increased by 11.5%, 39.3%, 37.2%, 30.9% and 27.6% during CK, M-, M, I- and I composting. Meanwhile, Redundancy analysis indicated the bands of bacteria community related to humic acid (HA) were more abundant in the M- and I- treatments. Furthermore, structural equation model and variance partitioning analysis demonstrated that M- and I- treatments promoted precursors to synthesize HA by coordinated regulation of biotic pathway and abiotic pathway, the increase of HA in the M and I treatments mainly through the abiotic pathway. In summary, an effective method was proposed to improve humus production by adjusting the preference of biotic and abiotic pathways of humus formation.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Composting
Aspects:
Patient_preference
Limits:
Animals
Language:
En
Journal:
Bioresour Technol
Journal subject:
ENGENHARIA BIOMEDICA
Year:
2021
Document type:
Article
Affiliation country:
China