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Evaluation on Filter/Adsorber Granular Activated Carbon using in Advanced Drinking Water Treatment: Abrasion number, Floater, Water-soluble ash, and Adsorption characteristics

고도정수처리용 Filter/Adsorber Granular Activated Carbon 특성 평가: 마모지수, floater, water-soluble ash 및 흡착특성 평가

  • Park, Byeong-Joo (Department of Chemical Engineering, Soongsil University) ;
  • Do, Si-Hyun (Department of Chemical Engineering, Soongsil University) ;
  • Kim, Tae-Yang (Department of Chemical Engineering, Soongsil University) ;
  • Hong, Seong-Ho (Department of Chemical Engineering, Soongsil University)
  • Received : 2015.12.03
  • Accepted : 2016.02.03
  • Published : 2016.02.28

Abstract

The characteristics of filter/adsorber granular activated carbon (F/A GAC) were investigated by measuring various parameters, which include surface area, pore volume, abrasion number, floater, and water-soluble ash. The correlation between parameters was also evaluated. Moreover, rapid small-scale column test (RSSCT) was conducted for adsorption characteristics. Thirteen F/A GAC were tested, and the average values of abrasion number and water-soluble ash were 88.9 and 0.15%, respectively. F/A GAC with the larger external surface area and greater mesopore volume had the lower abrasion number, which indicated that it was worn out relatively easily. Water-soluble ash of coconut-based GAC (about 2.6%) was greater than that of coal-based GAC (less than 1%), and the pH of solution was increased with GAC, which had the higher water-soluble ash. On the other hand, floater of thirteen F/A GAC was divided as two groups, which one group had relatively higher floater (2.7~3.5%) and the other group had lower floater (approximately 0.5%). The results of RSSCT indicated that coconut-based GAC (i.e. relatively higher water-soluble ash) had less adsorption capacity. Moreover, adsorption capacity of coal-based GAC with larger surface area and greater mesopore volume was superior to others.

Keywords

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