Recent Trends and Prospects of Microbial Fuel Cell Technology for Energy Positive Wastewater Treatment Plants Treating Organic Waste Resources

A sediment microbial fuel cell (SMFC) is a system in which MFC is applied to a sediment layer of an aqueous system for water purification. SMFCs can remove contaminants from sediments and decompose organic matter while simultaneously producing electrical energy. SMFC is installed in the form of installing an anode in the sediment at the bottom of the water system and a cathode in the water layer above the sediment, and connecting the two electrodes through an external circuit. Early SMFCs were developed to be used as power sources in hard-to-reach deep water areas or remote areas. However, recently, it has attracted a lot of attention as a technology for biologically purifying pollutants through its own power supply. Furthermore, it is being developed as a means of monitoring the environmental condition of the installed area. Despite the importance of SMFC, no comprehensive review has yet been published to the Korean readers on the trends and prospects of SMFC research. Therefore, in this review paper, the mechanism of SMFC, their mechanism of removal of organic, inorganic, and heavy metals, and the current state of SMFC technology are discussed, and future prospects are presented.

Section: 전극의 재료unclassified

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Trends and Prospects of Sediment Microbial Fuel Cells as Sustainable Aquatic Ecosystem Remediation Technology

Son¹,

Kim²

2022

“…데이터 센터의 증가는 에 너지 소비의 증가로 이어지므로, 기후 변화와 에너지 문제와 도 연관되어 있다. [1][2][3][4][5][6][7][8] 더불어 2022년 10월 데이터 센터 화재 사건으로 데이터 센터에 대한 관심이 급증하고 있다. 데이터 센터는 정보통신 인프라에서의 매우 중요한 부분을 차지한다.…”

Section: 서 론unclassified

Current and Prospects of Waste Heat Utilization and Cooling Technology in Data Centers

Park¹,

Jang²,

Choi³

et al. 2022

As the COVID-19 pandemic and interest in the virtual world rapidly increase, the data usage in the current society is rapidly increasing to an unprecedented level, and the need for expansion of data centers to handle it is also rapidly increasing. Data centers operate continuously and consume a lot of power in operation. As electricity consumption increases, the increase in greenhouse gas emissions adversely affects the environment, so the increase in data centers inevitably affects the climate environment. Typical technologies that can reduce power consumption in data centers are waste heat energy utilization and outdoor air conditioning. By analyzing the cases of major countries for the two technologies, the technological direction beneficial to Korea was reviewed. As Korea's outdoor air conditioning standards are relaxed, the number of outdoor air conditioning facilities in Korea is increasing. However, the Korean government's practical support for waste heat energy utilization is extremely limited. By analyzing policy cases for waste heat energy utilization in data centers in other countries, policies for revitalizing waste heat energy utilization in Korean data centers were proposed. Furthermore, several ways to reduce the amount of power in the data center were explored and proposed.

“…이실형 MEC (Dual-chamber MEC) 이실형 MEC는 가장 대중적으로 사용되는 반응기 형태이 다. 42) 이실형 반응기는 교환막과 함께 산화전극과 환원전극을 포함하는 두 개의 챔버로 구성된다(Fig. 1).…”

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Trends and perspectives of microbial electrolysis cell technology for ultimate green hydrogen production

Koo¹,

Kim²

2022

Self Cite

Currently, gray hydrogen and blue hydrogen are widely recognized as renewable energy, but in reality, they are made from fossil fuels. The most important task to achieve the hydrogen-based society is the development of economic green hydrogen production technology. Microbial electrolysis cell (MEC) is a next-generation energy-producing wastewater treatment technology that treats renewable organic wastewater and simultaneously produces the ultimate green hydrogen. For hydrogen production in MFC, it is necessary to input electrical energy into MEC. However, that energy is all covered by the energy produced by the MEC. Therefore, hydrogen production in MEC can be defined as the ultimate green hydrogen. This review contains an in-depth summary and analysis of the principles and feasibility of MEC technology, the composition and shape of MEC, electrode materials, and practical application cases in various types of wastewaters. Furthermore, compatibility and scalability with other environmental systems were reviewed at the pilot scale. Based on this, the technical limitations of MEC were diagnosed and future research directions for the practical application of MEC technology were suggested.