무전해 도금공정에서 사용되는 콜로이드 타입의 도금폐촉매액내 팔라듐은 회수하지 못하고 폐수로 방출되고 있었으나, 재자원화 기술을 적용하여 팔라듐을 회수하였다. 본 연구에서는 전과정평가기법을 이용하여 시와 폐기 시의 자원 소모량과 온실가스 배출량을 각각 산정한 후, 및 감축량을 분석하였다. 산정 결과, 팔라듐 1 kg 기준으로 폐기시 배출량은 9.67E+03 kgCO2eq., 소모량은 3.94E+01 kgSb-eq.로 나타났으며, 시 1.96E+03 1.54E+01 나타났다. 배출량과 소모량에 미치는 주요 영향물질을 살펴보면, 배출량에 물질은 모두 CO2로 91.42%, 98.37%였으며, 무연탄(hard coal)으로 40.63%, 60.73%로 한편, kg을 재자원화함에 따른 8,967.17 kgCO2...

Complete measurements, while providing maximal information gain, results in destruction of the shared entanglement. In standard teleportation scheme, sender's measurement on entangled state between sender and receiver has that consequence. We propose here a scheme involving weak measurements which can sustain entanglement upto certain level so reusability resource is possible. The are chosen su...

Circular Economy This frontispiece reflects upon the perspective article 2100488 by Hannah Mangold and Bernhard von Vacano. Plastics waste on left side, used as feedstock in chemical recycling, can be circled back into demanding engineering plastics applications, for example an electric vehicle housing battery electronics, connectors cables (Image credit BASF SE).

The present investigation was carried out in a holistic mode to study the interactions among integrated farming system (IFS) components and develop design sustainable IFS model which is technologically sound, economically viable, environmentally benign, socially acceptable for middle Indo-Gangetic Plains. For efficient utilization of farm resources enhance income per unit area land, 10 models h...

In this study, the effect of recycling fuel cell products on the performance of a solid oxide fuel cell and gas turbine (SOFC-GT) hybrid system was investigated. Three types of products recycling are considered: cathode products recycling (CPR), anode products recycling (APR), and both cathode and anode products recycling (BACPR). In the present work,   operating temperature and  limiting curre...

Material stocks are an important part of the social metabolism. Owing to long service lifetimes of stocks, they not only shape resource flows during construction, but also during use, maintenance, and at the end of their useful lifetime. This makes them an important topic for sustainable development. In this work, a model of stocks and flows for nonmetallic minerals in residential buildings, ro...