Diverse studies are being conducted on sewage sludge treatment and recycling methods, but the demand for a lowcost treatment technology is high because the sewage sludge has an 80% or higher water content and a high energy consumption cost. For this purpose, the waste volume can be reduced and solid fuel can be obtained from the Thermal Hydrolysis Reaction (THR) that consumes a small amount of energy. The experiment was conducted at a reaction temperature of 170-220oC and maintain for 1 hour at the final temperature. According to the Capillary Suction Time (CST) and Time to Filter (TTF) evaluation, the dewater ability was good after the temperature reached 200oC and did not significantly differ at the 200oC and higher reaction temperatures. The heating value of the dehydrated solid product was 3,800-4,200 kcal/kg, and its yield rate decreased from approximately 80% to 60% with the increase in the reaction temperature. To evaluate the efficiency of anaerobic digestion, the water quality of the liquid product was analyzed based on the reaction temperature. At the temperatures of 200oC and higher, the concentration of ammonia, which increases the pH and hinders anaerobic digestion rapidly increased. From the overall evaluation of the dehydrating efficiency, solid fuel quality, and anaerobic digestion efficiency during the thermal hydrolysis of sewage sludge, it is concluded that the optimal operating temperature is 200oC.

오존수로 살균처리한 반건조홍고추를 -10, -20 및 로 각각 냉동하여 로 냉동저장하면서 품질변화를 살펴보았다. 드립손실은 처리구가 대조구에 비해 많았으나, 처리구간에서는 저장기간에 따른 유의적 차이를 보이지 않았으며, 저장일수가 길어질수록 두 시료간의 차이가 감소하는 경향을 보였고, 냉동온도에 의해 유의적인 차이를 보였다. 텍스처는 처리구에서 저장 3개월 이후부터 저장기간 별 유의적 차이가 나타나지 않았다. a값은 냉동 전 반분반건조 처리구가

삼겹살을 먹을 때, 동물성 지방의 섭취를 줄일 수 있는 효과적인 조리방법을 제시하기 위하여 삼겹살을 삶기, 찌기, 굽기 및 튀기기의 방법으로 가열조리한 후, 물리화학적 특성의 변화를 조사하였다. 가열조리에 의하여 전체적으로 수분 양은 감소하고 지질 양은 증가하였는데, 이에 따른 가열감량, 탈수량 및 탈유량은 튀기기와 삶기 처리구에서 높았다. 시료의 pH는 삶기 처리구에서 가장 많이 증가하였고, 시료로부터 추출한 지질의 산가와 굴절율은 튀기기 처리

홍고추를 원료형태에 따라 원형, 세절, 분쇄로 제조하여 및 저장고에 보관하였다. 고추의 표면색도는 저장온도 조건에 따라 저장일수가 증가할수록 약간 감소하는 경향을 보였으며, 비타민 C 함량은 원형 홍고추가 세절고추나 분쇄고추보다 저장기간 동안 완만하게 감소하는 경향을 보였다. 저장온도별로는 저장군에서 비타민 C 함량이 가장 높게 유지되었으며, 저장군에서 저장 2개월째 50% 이하로 급격히 감소하였다. 유리당 함량은 저장일수가 증가할수록

Physico-chemical properties of the activated sludges(Suyoung and Changlim treatment plant), such as SVI(sludge volume index), absorbance, specific surface area, and specific resistance using Buchener funnel test were investigated with changing anaerobic storage time. This experimental condition was found that it was possible to estimate a linear relationship between their parameters such as specific surface area, specific resistance, and sludge volume index(SVI). The specific surface area and the specific resistance to filtration of the activated sludges of Suyoung and Changlim treatment plant were found as 123.6～136.6㎡/gDS and 41.5～44.9㎡/gDS(dry solid), and 1.09×1014 ～ 5.48×1014m/kg and 1.05×1014 ～ 2.48×1014m/kg, respectively. The results gave a good linear relationship between the specific surface area and the specific resistance, r=2.25×1012s-8.10×1013(R2=0.8885) at Suyoung treatment plant and r=1.26×1013s-4.75×1014(R2=0.8756) at Changlim treatment plant.