| Title |
Composting of Sewage Sludge with a Simple Aeration Method and its Utilization as a Soil Fertilizer
|
|---|---|
| Published in |
Environmental Management, February 2018
|
| DOI | 10.1007/s00267-017-0963-8 |
| Pubmed ID | |
| Authors |
Thanh-Binh Nguyen, Kazuto Shima |
| Abstract |
The objective of this study was to examine the feasibility of sewage sludge composting using a simple aeration method. Two consecutive composting trials (run A and run B) using Japanese sludge and woodchips (1:1, v/v) were conducted in cubic boxes (0.45 × 0.45 × 0.45 m3) made by plywood at Okayama University. Air was forced up through small holes perforated on two open-ended parallel PVC pipes (ø 16 mm, 0.25 m apart) laid at the base. The results show that compost temperatures were rapidly increased to the peak points of 47.4 °C (run A) and 74.8 °C (run B) within the first 2-3 days and varied depending on each composting run and vertical locations. The changes in physicochemical properties with particular attention to inorganic nitrogen (NH4-N, NO3-N) and free amino acid nitrogen (FAA-N) indicated that the biodegradation took place by different mineralization pathways during the composting process. The degradation of organic matter into amino acids followed by ammonification was predominant in run B, whereas the nitrification was greater in run A. A pot experiment using the two finished composts and their raw materials was carried out to study their effectiveness as fertilizer to Komatsuna (Brassica rapa var. perviridis). The total plant biomass produced by the composts was similar to chemical fertilizer. The lowering proportions of FAA-N/T-N, NH4-N/NO3-N, and C/N ratios in the composts compared to those in raw materials was found to correlate with the increase in plant biomass. |
X Demographics
The data shown below were collected from the profile of 1 X user who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 1 | 100% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 1 | 100% |
Mendeley readers
The data shown below were compiled from readership statistics for 39 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 39 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Bachelor | 7 | 18% |
| Researcher | 4 | 10% |
| Other | 3 | 8% |
| Lecturer | 2 | 5% |
| Student > Master | 2 | 5% |
| Other | 4 | 10% |
| Unknown | 17 | 44% |
| Readers by discipline | Count | As % |
|---|---|---|
| Environmental Science | 7 | 18% |
| Agricultural and Biological Sciences | 6 | 15% |
| Chemistry | 3 | 8% |
| Computer Science | 1 | 3% |
| Social Sciences | 1 | 3% |
| Other | 1 | 3% |
| Unknown | 20 | 51% |
Attention Score in Context
This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 06 February 2018.
All research outputs
#20,663,600
of 25,382,440 outputs
Outputs from Environmental Management
#1,653
of 1,914 outputs
Outputs of similar age
#342,513
of 448,179 outputs
Outputs of similar age from Environmental Management
#21
of 22 outputs
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