Modeling of Nitrogen Conservation by the Addition of Mg and P Salts Mixtures for the Management of Urban Food Waste Treatments

Author

Zhao, Wenjin ; Li, Dufeng ; Wang, Jiangling ; Li, Yu

Author_Institution

Coll. of Environ. & Resources, Jilin Univ., Changchun, China

fYear

2009

fDate

20-22 Sept. 2009

Firstpage

1

Lastpage

4

Abstract

A nitrogen conservation model in the thermophilic composting process of simulated food waste, in which phosphate and MgSO₄ mixtures (K₃PO₄ + MgSO₄, K₂HPO₄ + MgSO₄ and KH₂PO₄ + MgSO₄ mixtures) were introduced for nitrogen (NH₄ ⁺-N) conservation, was developed for the management of composting combined with Contois function. The established model showed good agreement with experimental observation for NH₄ ⁺ -N conservation. It appeared that K₃PO₄ + MgSO₄ of experiment Run B produced less MgNH₄PO₄middot6H₂O than K₂HPO₄ + MgSO₄ of Run C or KH₂PO₄ + MgSO₄ of Run D. The average fixation fraction of Runs B, C and D was respectively 30.77%, 69.38% and 73.13%.

Keywords

food processing industry; magnesium compounds; nitrogen; potassium compounds; waste management; Contois function; K₂HPO₄; K₃PO₄; KH₂PO₄; MgSO₄; nitrogen conservation; phosphate; salts mixtures; thermophilic composting process; urban food waste treatment; Conducting materials; Energy management; Environmental management; Inductors; Nitrogen; Raw materials; Resource management; Soil; Thermal management; Waste management;

fLanguage

English

Publisher

ieee

Conference_Titel

Management and Service Science, 2009. MASS '09. International Conference on

Conference_Location

Wuhan

Print_ISBN

978-1-4244-4638-4

Electronic_ISBN

978-1-4244-4639-1

Type

conf

DOI

10.1109/ICMSS.2009.5305532

Filename

5305532