The variability in nutrient composition of Anaerobic Digestate granules produced from high shear granulation

Chirangano Mangwandi, Liu JiangTao, Ahmad B Albadarin, Stephen J. Allen, Gavin M Walker

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

This study investigates the production of organic fertilizer using Anaerobic Digestate (as a nutrient source) and limestone powder as the raw materials. A two-level factorial experimental design was used to determine the influence of process variables on the nutrient homogeneity within the granules. Increasing the liquid-to-solid ratio during granulation resulted in increased granule nutrient homogeneity. Increasing the processing time and the impeller speed were also found to increase the nutrient homogeneity. In terms of nutrients release into deionized water, the granules effectively released both potassium and phosphate into solution.
Original languageEnglish
Pages (from-to)33-42
JournalWaste Management
Volume33
Issue number1
Early online date17 Oct 2012
DOIs
Publication statusPublished - 01 Jan 2013

Bibliographical note

Copyright 2013 Elsevier B.V., All rights reserved.

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