dc.contributor.author | Le, Qianhan | |
dc.date.accessioned | 2023-04-28T17:11:04Z | |
dc.date.available | 2023-04-28T17:11:04Z | |
dc.date.issued | 2023-04-28 | |
dc.identifier.uri | http://hdl.handle.net/10222/82549 | |
dc.description.abstract | Biosolids application to soils has been seen as a sustainable agricultural practice to recycle organic matter and nutrients and mitigate climate change. Four different types of biosolids were produced by treating an identical batch of raw sewage solids: N-Viro, CaO-treated, heat-dried (HDB), and composted biosolids (CB). Leached and non-leached incubation studies were conducted simultaneously for 154 days to assess N mineralization and N-acquiring enzyme activities (β-1,4-N-acetyl-glucosaminidase (NAG), leucine amino peptidase (LAP), and urease) in an acidic soil after biosolids addition. Our results showed that different biosolids treatment processes (alkaline treatment (N-Viro® Process and CaO addition), composting, and heat drying) significantly affected biosolids characteristics in terms of N forms and contents. N availability decreased in the order CaO-treated > N-Viro > HDB > CB. A first-order kinetic model fitted well to the mineralization data. N-acquiring enzyme activities all increased after biosolids addition, suggesting that soil microbial activity was stimulated. | en_US |
dc.language.iso | en | en_US |
dc.subject | Biosolids | en_US |
dc.subject | Soil N mineralization | en_US |
dc.subject | Soil enzyme activity | en_US |
dc.title | EFFECT OF PHYSICAL, CHEMICAL, AND BIOLOGICAL TREATMENT PROCESSES ON BIOSOLID NITROGEN (N) FORMS AND THEIR INFLUENCE ON SOIL N MINERALIZATION DYNAMICS AND N-ACQUIRING ENZYME ACTIVITIES IN AN ACIDIC SOIL | en_US |
dc.date.defence | 2023-04-24 | |
dc.contributor.department | Faculty of Agriculture | en_US |
dc.contributor.degree | Master of Science | en_US |
dc.contributor.external-examiner | n/a | en_US |
dc.contributor.graduate-coordinator | G.W. Price | en_US |
dc.contributor.thesis-reader | David L. Burton | en_US |
dc.contributor.thesis-reader | Lori A. Phillips | en_US |
dc.contributor.thesis-reader | Svetlana N. Yurgel | en_US |
dc.contributor.thesis-supervisor | G.W. Price | en_US |
dc.contributor.ethics-approval | Not Applicable | en_US |
dc.contributor.manuscripts | Not Applicable | en_US |
dc.contributor.copyright-release | Not Applicable | en_US |