• Proceedings of the Korean Society of Sericultural Science Conference
• /
• 2004.10a
• /
• pp.46-46
• /
• 2004

• Environmental Analysis Health and Toxicology
• /
• v.4 no.3_4
• /
• pp.29-59
• /
• 1989

For the purpose of electrolytic treatment of wastewater containing various heavy metals, the BPBE Cell of batch and continuous type was considered and experimented. Some results from this study were summarized as follows: 1. When the artificial wastewater containing 500 mg/l of the concentration of various heavy metallic ion was electrolyzed in BPBE Cell of batch type, the removal efficicency was over 95% in cadmiun (II), lead (II), chromium (Ⅵ) and over 85% in copper (II), chromium (III). 2, As granular activated carbon packed in BPBE Cell, coconut shell was superior to lignite and the removal efficiency was the highest when the activated carbon was 4/6 mesh, the voltage was 20V. 3. When the heavy metallic ion in wastewater was electrolyzed in BPBE Cell of continuous type, about 1,000mg of heavy metal per 1kg of coconut sell could be removed. 4. The treatment method of heavy metallic ion in wastewater by BPBE Cell cost less than in the former chemical treatment method and the coconut shell packed in BPBE Cell could be regenerated by chemical method.

• Korean journal of food and cookery science
• /
• v.20 no.6 s.84
• /
• pp.684-694
• /
• 2004

The purpose of this study was to estimate the microbial and physicochemical quality of some raw vegetables and suggest safer methods of sanitization and storage for foodservice operations. Three sanitization methods were utilized during pre-preparation (tap water, chlorine water and electrolyzed water). Leek and Chicory were monitored as ingredient, with different storage temperatures $(3,\;10^{\circ}C)$ and periods (1, 2, 3, 4 and 7 days). The largest reduction in the microbial counts was shown with the electrolyzed water and for the case before immersion in chlorine water, performing a first washing was more effective in reducing the microbial counts than with no washing. The results showed that the storage temperature, pH, moisture content and microbial loads were important factors affecting the quality of vegetables.

• Korean journal of food and cookery science
• /
• v.21 no.5
• /
• pp.557-566
• /
• 2005

The purpose of this study was to estimate the microbial quality of some raw vegetables and to suggest a safer method of sanitization and pre-preparation in foodservice operations. The production of Dotori-muk muchim was monitored from ingredient preparation to final product and during holding at different temperatures. Three sanitization methods were performed during the preparation with crown daisy (tap water, chlorine water, electrolyzed water). The largest reduction of microbial counts was for electrolyzed water (after treatment, total plate counts were decreased to $2.76{\sim}3.76$ Log CFU/g, coliform counts were not detected). In the case before immersed in chlorine water, Performed first washing is larger the effective reduction of microbial counts than or not.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.5 no.3
• /
• pp.232-235
• /
• 2004

본 연구에서는 산성전리수가 환경위생관련 미생물군의 제어에 미치는 효과를 살펴보았다 미생물의 직접적인 전파매개체인 사람 손을 대상으로 하여 산성전리수의 미생물 제어력을 비누와 알콜의 미생물 제어력과 비교하였다. 손을 산성전리수로 세정한 후 잔존 미생물의 수를 측정하였을 때 비누로 세척했을 때 보다 훨씬 탁월한 미생물 제어력을 보여주었다. 이때 산성전리수에 의한 손의 미생물 제어력은 소독용 알콜에 의한 미생물 제어력과 거의 비슷하였다. 산성전리수를 사용하여 걸레를 세척한 경우에도 락스 희석액으로 걸레를 세척한 것과 유사한 완벽한 미생물 제어력을 보여주었다. 작업장의 공중낙하균에 대한 산성전리수의 미생물제어력을 조사했을 때도 산성전리수는 강력한 미생물 제어력을 나타내었다. 이러한 결과는 산성전리수가 환경위생미생물군에 대한 강력한 제어력을 가지고 있음을 보여줄 뿐만 아니라 효과적인 환경위생 세정제로 개발될 수 있음을 보여준다.

• Proceedings of the KAIS Fall Conference
• /
• 2004.06a
• /
• pp.288-290
• /
• 2004

본 연구에서는 산성전리수와 환원전리수의 미생물 제어력을 정량적으로 비교하였다. 산성전리수와 환원전리수에 병원성 미생물을 각각 시간별로 노출시킨 결과, 산성 전리수와 환원전리수 모두 미생물을 제어 할 수 있다. 특히 산성 전리수는 각종 병원성 미생물에 대하여 순간적으로 미생물을 제어하는 강력한 살균효과를 보여주었다. 이에 비해 환원전리수는 산성전리수의 강력한 미생물 제어력에는 미치지 못하기는 하지만, 시판되는 무기 항균제보다는 우수하거나 비슷한 미생물 제어력을 보여주었다.

• Safe Food
• /
• v.7 no.2
• /
• pp.35-39
• /
• 2012

• Proceedings of the Korean Society of Sericultural Science Conference
• /
• 2005.11a
• /
• pp.24-24
• /
• 2005

• Food Industry And Nutrition
• /
• v.8 no.1
• /
• pp.45-49
• /
• 2003

• Journal of Microbiology and Biotechnology
• /
• v.28 no.3
• /
• pp.432-438
• /
• 2018

Microalgae hold promise as a renewable energy source for the production of biofuel, as they can convert light energy into chemical energy through photosynthesis. However, cost-efficient harvest of microalgae remains a major challenge to commercial-scale algal biofuel production. We first investigated the potential of electrolytic water as a flocculant for harvesting Tetraselmis sp. Alkaline electrolyzed water (AEW) is produced at the cathode through water electrolysis. It contains mineral ions such as $Na^+$, $K^+$, $Ca^{2+}$, and $Mg^{2+}$ that can act as flocculants. The flocculation activity with AEW was evaluated via culture density, AEW concentration, medium pH, settling time, and ionic strength analyses. The flocculation efficiency was 88.7% at 20% AEW (pH 8, 10 min) with a biomass concentration of 2 g/l. The initial biomass concentration and medium pH had significant influences on the flocculation activity of AEW. A viability test of flocculated microalgal cells was conducted using Evans blue stain, and the cells appeared intact. Furthermore, the growth rate of Tetraselmis sp. in recycled flocculation medium was similar to the growth rate in fresh F/2 medium. Our results suggested that AEW flocculation could be a very useful and affordable methodology for fresh biomass harvesting with environmentally friendly easy operation in part of the algal biofuel production process.