Study on Indicators for Granular Activated Carbon Screening and Adsorption Cycle Determining

2015 ◽  
Vol 1092-1093 ◽  
pp. 1006-1012
Author(s):  
Dao Ji Wu ◽  
Cheng Long Lv ◽  
Zhao Liang Zhu ◽  
Ning Wang ◽  
Shu Jie Li ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Organic Matter ◽  
Activated Carbon ◽  
Iodine Value ◽  
Performance Indicators ◽  
Granular Activated Carbon ◽  
Raw Water ◽  
Removal Rates ◽  
Adsorption Performance ◽  
Methylene Blue Value

Four kinds of granular activated carbon GAC were treated by water taken from surface drinking-water sources in Ji’nan. Five adsorption performance indicators of granular activated carbon (GAC) were investigated. The correlation between the indicators and the removal rate of organic matter in raw water was analysed and the results showed that the removal rates of CODMn and DOC were well correlated with iodine value, the coefficient correlations, R2 were 0.8745 and 0.8474 respectively, the removal rates of UV254 was well correlated with methylene blue value (R2 = 0.9454), indicating the capability as indicator for GAC selection. Additionally, one original GAC was used to adsorb organic matter in raw water, as well as the GAC samples treated with four different saturation time in raw water, to investigate the residue rate of adsorption ability. Of all five adsorption performance indicators, it was found that the iodine value, methylene blue value, and tannic acid were negatively related to the residual rate of the GAC absorption ability (R2 was over 0.9). Based on the research, the activated carbon filters in Quehua Water plant in Ji’nan was evaluated and the replacement of them was suggested.

scholarly journals Effects of ozonation and temperature on biodegradation of natural organic matter in biological granular activated carbon filters

2010 ◽  
Vol 3 (1) ◽  
pp. 107-132 ◽  
Author(s):  
L. T. J. van der Aa ◽  
L. C. Rietveld ◽  
J. C. van Dijk
Keyword(s):  
Carbon Dioxide ◽  
Organic Matter ◽  
Activated Carbon ◽  
Organic Carbon ◽  
Natural Organic Matter ◽  
Granular Activated Carbon ◽  
Carbon Dioxide Production ◽  
Oxygen Removal ◽  
Theoretical Maximum ◽  
Increasing Temperature

Abstract. Four pilot (biological) granular activated carbon ((B)GAC) filters were operated to quantify the effects of ozonation and water temperature on the biodegradation of natural organic matter (NOM) in (B)GAC filters. Removal of dissolved organic carbon (DOC), assimilable organic carbon (AOC) and oxygen and the production of carbon dioxide were taken as indicators for NOM biodegradation. Ozonation stimulated DOC and AOC removal in the BGAC filters, but had no significant effect on oxygen removal and carbon dioxide production. The temperature had no significant effect on DOC and AOC removal, while oxygen removal and carbon dioxide production increased with increasing temperature. Multivariate linear regression was used to quantify these relations. In summer the ratio between oxygen consumption and DOC removal exceeded the theoretical maximum of 2.5 g O2·g C−1 and the ratio between carbon dioxide production and DOC removal exceeded the theoretical maximum of 3.7 g CO2·g C−1. Bioregeneration of large NOM molecules could explain this excesses and the non-correlation between DOC and AOC removal and oxygen removal and carbon dioxide production. However bioregeneration of large NOM molecules was considered not likely to happen, due to sequestration.

Characterization of natural organic matter adsorption in granular activated carbon adsorbers

2011 ◽  
Vol 45 (13) ◽  
pp. 3951-3959 ◽  
Author(s):  
Silvana Velten ◽  
Detlef R.U. Knappe ◽  
Jacqueline Traber ◽  
Hans-Peter Kaiser ◽  
Urs von Gunten ◽  
...  
Keyword(s):  
Organic Matter ◽  
Activated Carbon ◽  
Natural Organic Matter ◽  
Granular Activated Carbon

scholarly journals Effects of ozonation and temperature on the biodegradation of natural organic matter in biological granular activated carbon filters

2011 ◽  
Vol 4 (1) ◽  
pp. 25-35 ◽  
Author(s):  
L. T. J. van der Aa ◽  
L. C. Rietveld ◽  
J. C. van Dijk
Keyword(s):  
Carbon Dioxide ◽  
Organic Matter ◽  
Oxygen Consumption ◽  
Activated Carbon ◽  
Organic Carbon ◽  
Natural Organic Matter ◽  
Granular Activated Carbon ◽  
Carbon Dioxide Production ◽  
Theoretical Maximum ◽  
Assimilable Organic Carbon

Abstract. Four pilot (biological) granular activated carbon ((B)GAC) filters were operated to quantify the effects of ozonation and water temperature on the biodegradation of natural organic matter (NOM) in (B)GAC filters. The removal of dissolved organic carbon (DOC), assimilable organic carbon (AOC) and oxygen and the production of carbon dioxide were taken as indicators for NOM biodegradation. Ozonation stimulated DOC and AOC removal in the BGAC filters, but had no significant effect on oxygen consumption or carbon dioxide production. The temperature had no significant effect on DOC and AOC removal, while it had a positive effect on oxygen consumption and carbon dioxide production. Multivariate linear regression was used to quantify these relationships. In summer, the ratio between oxygen consumption and DOC removal was approximately 2 times the theoretical maximum of 2.6 g O2 g C−1 and the ratio between carbon dioxide production and DOC removal was approximately 1.5 times the theoretical maximum of 3.7 g CO2 g C−1. The production and loss of biomass, the degassing of (B)GAC filters, the decrease in the NOM reduction degree and the temperature effects on NOM adsorption could only partly explain these excesses and the non-correlation between DOC and AOC removal and oxygen consumption and carbon dioxide production. It was demonstrated that bioregeneration of NOM could explain the excesses and the non-correlation. Therefore, it was likely that bioregeneration of NOM did occur in the (B)GAC pilot filters.

Bioturbation and Dissolved Organic Matter Enhance Contaminant Fluxes from Sediment Treated with Powdered and Granular Activated Carbon

2013 ◽  
Vol 47 (10) ◽  
pp. 5092-5100 ◽  
Author(s):  
D. Kupryianchyk ◽  
A. Noori ◽  
M. I. Rakowska ◽  
J. T. C. Grotenhuis ◽  
A. A. Koelmans
Keyword(s):  
Organic Matter ◽  
Activated Carbon ◽  
Dissolved Organic Matter ◽  
Granular Activated Carbon

Effluent organic matter removal from reverse osmosis feed by granular activated carbon and purolite A502PS fluidized beds

2014 ◽  
Vol 20 (6) ◽  
pp. 4499-4508 ◽  
Author(s):  
Sukanyah Shanmuganathan ◽  
Tien Vinh Nguyen ◽  
W.G. Shim ◽  
Jaya Kandasamy ◽  
Andrzej Listowski ◽  
...  
Keyword(s):  
Organic Matter ◽  
Activated Carbon ◽  
Reverse Osmosis ◽  
Fluidized Beds ◽  
Granular Activated Carbon ◽  
Effluent Organic Matter ◽  
Organic Matter Removal
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