Modeling of solubilization dynamics of manure organic matter and phosphorus as a function of ph control and enzyme supplementation
Yükleniyor...
Dosyalar
Tarih
2016
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Technical Univ Wroclaw
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The potential use of commercial enzyme and pH control has been investigated for enhancing dairy manure fermentation and modeling dissolved organic matter and orthophosphate (PO4-P) dynamics of fermenters. Anaerobic lab-scale batch fermenters (initial total solids concentration (TS0) = 3.8 wt. %) were fed with separated dairy manure solids and operated under pH controls (5 and 9.5). The enzyme supplemented alkaline fermenters clearly outperformed the acidic fermenters in terms of chemical oxygen demand (COD) solubilization: ca. 50% vs. 20%, respectively. Soluble PO4-P in the acidic fermenters was comparably higher but constituted less than 20% of total phosphorus. Better soluble COD (>80%) and soluble PO4-P (>70%) yields were noted for the dilute fermenters (TS0 = 0.6-0.8 wt. %). An existing model was retrofitted, calibrated and validated for simulating dynamics of soluble COD, volatile fatty acids, and soluble orthophosphate under various pH and enzyme conditions.
Açıklama
Anahtar Kelimeler
Phosphorus, Manure Organıc Matter, ph Control
Kaynak
Environment Protection Engineering
WoS Q Değeri
Q4
Scopus Q Değeri
Q4
Cilt
42
Sayı
2
