Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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A Study on the Treatment of Swine Wastewater Using Titanium Dioxide Prepared by Hydrothermal Method

수열합성법으로 제조된 이산화티탄에 의한 축산폐수 처리에 관한 연구

  • Yang, Jin-Seop (Division of Applied Chemical Engineering, Pukyong National University) ;
  • jung, Won Young (Division of Applied Chemical Engineering, Pukyong National University) ;
  • Baek, Seung Hee (Division of Applied Chemical Engineering, Pukyong National University) ;
  • Lee, Gun Dae (Division of Applied Chemical Engineering, Pukyong National University) ;
  • Park, Seong Soo (Division of Applied Chemical Engineering, Pukyong National University) ;
  • Hong, Seong-Soo (Division of Applied Chemical Engineering, Pukyong National University)
  • 양진섭 (부경대학교 응용화학공학부) ;
  • 정원영 (부경대학교 응용화학공학부) ;
  • 백승희 (부경대학교 응용화학공학부) ;
  • 이근대 (부경대학교 응용화학공학부) ;
  • 박성수 (부경대학교 응용화학공학부) ;
  • 홍성수 (부경대학교 응용화학공학부)
  • Received : 2007.01.22
  • Accepted : 2007.02.28
  • Published : 2007.04.10
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Abstract

This study was performed to evaluate the application of $TiO_2$ on the photocatalytic treatment of swine wastewater. $TiO_2$ sol was prepared by hydrothermal method with the agent ratio($(C_2H_5)_2NH_2\;mol/Ti(OC_3H_7)_4\;mol)=1$ and R ratio ($H_2O\;mol/Ti(OC_3H_7)_4\;mol)=42$. The effect of parameter on the removal efficiency of swine wastewater in a batch type immobilized photocatalyst system such as initial pH, intensity of UV, dosage of $TiO_2$, air flow rate, and concentration of $H_2O_2$ was examined. Wastewater was effectively eliminated in the presence of both UV light illumination and $TiO_2$. Photocatalytic activity was higher in acidic condition compared to neutral and alkaline conditions. In addition, photocatalytic activity increased with increasing UV light intensity, dosage of $TiO_2$, the flow rate of air and the amount of $H_2O_2$ added as an oxidant, but the excess amount of $H_2O_2$ dosage decreased the removal efficiency.

본 연구는 이산화티탄 광촉매 반응에 의한 축산폐수 처리에 대하여 연구하였다. 이를 위하여 첨가제의 몰비($(C_2H_5)_2NH_2/Ti(OC_3H_7)_4$)를 1, R 비($H_2O\;mol/Ti(OC_3H_7)_4\;mol$)를 42로 하여 수열합성법으로 이산화티탄 졸을 제조하였다. 축산폐수에 대한 이산화티탄 광촉매 반응은 이산화티탄, UV가 모두 존재할 경우가 단독으로 존재할 경우보다 활성이 증가하였고, 축산폐수의 pH가 산성일 때 활성이 우수한 것으로 나타났다. 또한, 이산화티탄 광촉매 반응은 자외선의 세기, 광촉매의 량, 공기 주입량, 과산화수소의 주입량이 증가함에 따라 활성도가 증가하였으나 과산화수소의 량이 일정수준 이상에서는 오히려 활성의 감소가 일어났다.

Keywords

Acknowledgement

Supported by : 산업자원부

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