Effect of hydrogen peroxide on radiofrequency-oxidation of dairy manure. Issue 2 (11th September 2015)

• Record Type: Journal Article
• Authors: Young, Chris; Liao, Ping Huang; Lo, Kwang Victor; Srinivasan, Asha
• Is Part Of: Journal of environmental engineering and science. Volume 10:Issue 2(2015)
• Page Start: 40
• Page End: 45
• Publication Date: 2015-09-11
• Subjects: research & development; -- thermal effects; -- waste management & disposal; Environmental engineering -- Periodicals; Sanitary engineering -- Periodicals; Environmental engineering -- Canada -- Periodicals; Environnement, Technique de l' -- Périodiques; Technique sanitaire -- Périodiques; Environnement, Technique de l' -- Canada -- Périodiques; Environmental engineering; Sanitary engineering; Canada; Electronic journals; Computer network resources; Periodicals; 628.05
• DOI: 10.1680/jees.15.00003
• Languages: English
• ISSNs: 1496-2551

Abstract

Abstract : A novel technology involving a combination of radiofrequency (RF) heating and hydrogen peroxide (H2 O2 ) addition was used to treat dairy manure as a part of a manure management and resource recovery scheme; the process was to release nutrients and to disintegrate dairy manure for subsequent struvite crystallisation process and/or anaerobic digestion. The factors affecting the process, namely, H2 O2 dosage, heating time and radiofrequency temperature, were studied using a surface response design methodology. The results indicated that solids disintegration efficiency in terms of soluble chemical oxidation demand concentration in the treated solution was in a range of 15–18% of total chemical oxygen demand. Very high volatile fatty acid concentrations were also produced. Orthophosphate (ortho-P) concentrations were in the range of 36–52% of total phosphorus in the treated solution. The optimal operating conditions for both solids disintegration and ortho-P release were predicted to be RF temperature of 83°C, holding time of 55–60 min and H2 O2 dose of 1.7–1.8%.