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Meet the challenges in the “Carbon Age”

Carbon Research 2022年第1期1卷 1-2页

作者： Wu, Fengchang Li, Fangbai Zhao, Xiaoli Bolan, Nanthi S. Fu, Pingqing Lam, Su Shiung Mašek, Ondřej Ong, Hwai Chyuan Pan, Bo Qiu, Xueqing Rinklebe, Jörg Tsang, Daniel C. W. Van Zwieten, Lukas Vithanage, Meththika Wang, Shaobin Xing, Baoshan Zhang, Gan Wang, Hailong State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental Sciences Beijing China Institute of Eco-environmental and Soil Sciences Guangdong Academy of Sciences Guangzhou China School of Agriculture and Environment The University of Western Australia Perth Australia Institute of Surface-Earth System Science School of Earth System Science Tianjin University Tianjin China Higher Institution Centre of Excellence (HICoE) Institute of Tropical Aquaculture and Fisheries (AKUATROP) Universiti Malaysia Terengganu Kuala Nerus Malaysia School of GeoSciences University of Edinburgh Edinburgh UK School of Information Systems and Modelling University of Technology Sydney Sydney Australia Faculty of Environmental Science & Engineering Kunming University of Science & Technology Kunming China School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou China School of Architecture and Civil Engineering University of Wuppertal Wuppertal Germany Department of Civil and Environmental Engineering The Hong Kong Polytechnic University Kowloon Hong Kong China New South Wales Department of Primary Industries Wollongbar Australia Ecosphere Resilience Research Center University of Sri Jayewardenepura Nugegoda Sri Lanka School of Chemical Engineering and Advanced Materials University of Adelaide Adelaide Australia Stockbridge School of Agriculture University of Massachusetts Amherst USA Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou China School of Environmental and Chemical Engineering Foshan University Foshan China

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Climatic Changes Around 4,200 Years BP in Coastal Areas of East Asia: Potential Influence on the Chinese Migration to Japan

SSRN

引用

SSRN 2022年

作者： Kajita, Hiroto Isaji, Yuta Kato, Rintaro Nishikura, Yoko Murayama, Masafumi Ohkouchi, Naohiko Yang, Shouye Zheng, Hongbo Wang, Ke Nakanishi, Toshimichi Sasaki, Takenori Maeda, Ayumi Suzuki, Atsushi Kawahata, Hodaka Graduate School of Science and Technology Hirosaki University Hirosaki Japan National Institute of Polar Research Research Organization of Information and Systems Tachikawa Japan Biogeochemistry Research Center Japan Agency for Marine-Earth Science and Technology Yokosuka Japan Geological Survey of Japan National Institute of Advanced Industrial Science and Technology Tsukuba Japan Department of Earth and Planetary Science Graduate School of Science The University of Tokyo Tokyo Japan Atmosphere and Ocean Research Institute The University of Tokyo Kashiwa Japan Faculty of Agriculture and Marine Science Kochi University Kochi Japan State Key Laboratory of Marine Geology Tongji University Shanghai China Research Center for Earth System Science Yunnan University Yunnan China School of Earth and Environmental Sciences The University of Queensland QLD Australia Museum of Natural and Environmental History Shizuoka Japan

Climate change during the Holocene is thought to have had a significant impact on human migration and development. In Japan, the earliest prehistoric culture based on hunting and gathering began about 16,000 years ago (the Jomon era). At least 3,000 years ago, people with paddy rice cultivation skills migrated from mainland China, causing an explosion of population growth, lifestyle changes, and changes to the level of civilisation (Yayoi era). To clarify the climatic changes that potentially led to the movement of the Yayoi people to Japan, we analysed the palaeotemperature changes recorded in coastal marine sediment cores obtained from the Zhejiang coast in China, where the first paddy rice cultivation occurred, and northern Kyushu Island, where it was introduced to Japan. The reconstructed temperature fluctuations over the past 7,000 years from both sites were similar on the scale of hundreds to thousands of years. The cold periods that occurred approximately 300 and 4,200 years ago, which are related to the Little Ice Age and 4.2 ka events, respectively, may have been caused by modulations of the East Asian summer monsoon. Our study suggests that enhanced coastal upwelling may have amplified the cold climate of the 4.2 ka event on the Zhejiang coast. Our results support the recently proposed hypothesis that climate change prompted the collapse of the Yangtze civilisation and the migration of paddy rice farmers to other parts of Asia, including Japan. In contrast, the Jomon people, who still survived mainly based on hunting and gathering at that time, might have avoided a major population collapse. The differences in climatic changes and their possible impacts on human civilisations on both sides of the Yellow Sea can explain the migration-related population changes that have been observed in analyses of their DNA haplogroups. © 2022, The Authors. All rights reserved.

关键词： Climate change

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Exploration of an Efficient Method for Removing Antibiotics from Water and Digested Sewage Sludge Using Fe(Vi): Kinetics and P Phytoavailability and Compostability in Treated Sludge

SSRN

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SSRN 2023年

作者： Limmun, Warunee Ishikawa, Nao Maeda, Takeki Umeda, Takayuki Song, Jie Sasamoto, Makoto Umita, Teruyuki Ito, Ayumi Department of Frontier Matters and Function Engineering Graduate School of Engineering Iwate University Morioka020-8551 Japan Department of Engineering King Mongkut's Institute of Technology Ladkrabang Prince of Chumphon Campus 17/1 Chumko Pathio Chumphon86160 Thailand Course of Civil and Environmental Engineering Department of System Innovation Engineering Faculty of Science and Engineering Iwate University Morioka020-8551 Japan Department of Food Production and Environmental Management Faculty of Agriculture Iwate University 3-18-34 Ueda Morioka020-8550 Japan Technical Office Faculty of Science and Engineering Iwate University Morioka020-8551 Japan

Potassium ferrate (K2FeO4) containing hexavalent iron [Fe(VI)] is an environmentally friendly oxidant, which possesses strong oxidizing power to treat wastewater and sludge. Therefore, the present study investigated degradation of selected antibiotics, namely levofloxacin (LEV), ciprofloxacin (CIP), oxytetracycline (OTC), and azithromycin (AZI), in water and anaerobically digested sewage sludge samples using Fe(VI). The effects of different Fe(VI) concentrations and initial pH values on antibiotic removal efficiency were evaluated. Under the studied conditions, LEV and CIP were almost completely removed from water samples, following second-order kinetics. In addition, over 60% of the four selected antibiotics were removed from sludge samples using 1 g·L-1 Fe(VI). Furthermore, P phytoavailability and compostability of Fe(VI)-treated sludge were evaluated using different extraction reagents and a small composting unit. The extraction efficiency of phytoavailable P using 2% citric acid and neutral ammonium citrate was approximately 40% and 70%, respectively. The mixture of Fe(VI)-treated sludge and rice husk was self-heated in a closed composting reactor through the biodegradation of organic matter derived from the treated sludge. Therefore, Fe(VI)-treated sludge may be utilized as an organic material containing phytoavailable P for compost. © 2023, The Authors. All rights reserved.

关键词： Antibiotics

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Exploration of an efficient method for removing antibiotics from water and digested sewage sludge using Fe(VI): Kinetics and P phytoavailability and compostability in treated sludge

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Chemosphere 2023年第1期336卷 139165页

作者： Limmun, Warunee Ishikawa, Nao Maeda, Takeki Umeda, Takayuki Song, Jie Sasamoto, Makoto Umita, Teruyuki Ito, Ayumi Department of Frontier Matters and Function Engineering Graduate School of Engineering Iwate University Ueda 4-3-5 Morioka020-8551 Japan Department of Engineering King Mongkut's Institute of Technology Ladkrabang Prince of Chumphon Campus 17/1 Chumko Pathio Chumphon 86160 Thailand Course of Civil and Environmental Engineering Department of System Innovation Engineering Faculty of Science and Engineering Iwate University Ueda 4-3-5 Morioka020-8551 Japan Department of Food Production and Environmental Management Faculty of Agriculture Iwate University Ueda 3-18-34 Morioka020-8550 Japan Technical Office Faculty of Science and Engineering Iwate University Ueda 4-3-5 Morioka020-8551 Japan

Potassium ferrate (K2FeO4) containing hexavalent iron [Fe(VI)] is an environmentally friendly oxidant, which possesses strong oxidizing power to treat wastewater and sludge. Therefore, the present study investigated degradation of selected antibiotics, namely levofloxacin (LEV), ciprofloxacin (CIP), oxytetracycline (OTC), and azithromycin (AZI), in water and anaerobically digested sewage sludge samples using Fe(VI). The effects of different Fe(VI) concentrations and initial pH values on antibiotic removal efficiency were evaluated. Under the studied conditions, LEV and CIP were almost completely removed from water samples, following second-order kinetics. In addition, over 60% of the four selected antibiotics were removed from sludge samples using 1 g L−1 Fe(VI). Furthermore, P phytoavailability and compostability of Fe(VI)-treated sludge were evaluated using different extraction reagents and a small composting unit. The extraction efficiency of phytoavailable P using 2% citric acid and neutral ammonium citrate was approximately 40% and 70%, respectively. The mixture of Fe(VI)-treated sludge and rice husk was self-heated in a closed composting reactor through the biodegradation of organic matter derived from the treated sludge. Therefore, Fe(VI)-treated sludge may be used as an organic material containing phytoavailable P for compost. © 2023 Elsevier Ltd

关键词： Antibiotics

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Space Lander Descent Control system Design Considering Fuel Sloshing Under Microgravity

Space Lander Descent Control System Design Considering Fuel ...

引用

IEEE Conference on Decision and Control

作者： Yuji Tanaka Mitsuhisa Baba Masatsugu Otsuki Kazuhisa Fujita Takehiro Himeno Takao Maeda Masaki Takahashi School of Science for Open and Environmental Sytems Keio University Kanagawa Japan Japan Aerospace Exploration Agency Kanagawa Japan Department of Aeronautics and Astronautics University of Tokyo Tokyo Japan Department of Mechanical Systems Engineering Tokyo University of Agriculture and Technology Tokyo Japan Department of System Design Engineering Keio Univerisity Kanagawa Japan

ISBN: (数字)9781665467612

ISBN: (纸本)9781665467629

This study proposes a descent control system for a space lander with a large amount of fuel, to protect the lander from overturning when landing on microgravity objects. As sloshing is a major problem during descent, it is desirable to construct a control system that considers the sloshing dynamics. We derive a model of the lander considering fuel dynamics, determine the fuel-optimal trajectory for guidance, design a fuel state estimator for navigation, and design a tracking controller. The effectiveness of the proposed method is evaluated using a physical simulator. The proposed method achieves simultaneous stabilization of the lander and fuel, and is shown to be effective in preventing overturning.

关键词： Adaptation models Monte Carlo methods Navigation Aerospace electronics Control systems Trajectory Fuels

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Cost-effectiveness of regenerated green materials for removal of pharmaceuticals from wastewater

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Waste Management 2025年 204卷

作者： Despina A. Gkika Athanasia K. Tolkou Stavros G. Poulopoulos Ioannis K. Kalavrouziotis George Z. Kyzas Hephaestus Laboratory School of Chemistry Faculty of Sciences Democritus University of Thrace GR 65404 Kavala Greece Chemical and Materials Engineering Department School of Engineering and Digital Sciences Environmental Science & Technology Group (ESTg) Nazarbayev University Astana 010000 Kazakhstan School of Science and Technology Hellenic Open University Patras Greece

Wastewater treatment plants offer valuable potential within the circular economy framework. Although pharmaceuticals can be removed through energy-, chemical-, and cost-intensive processes, there is a growing shift toward practical waste management and wastewater treatment innovations due to high waste production rates and the need for affordable adsorbents to lower treatment costs. Among various water purification techniques, adsorption system (adsorption, desorption, regeneration) stands out for being cost-effective, versatile, and easy to operate. This review examines how advancements in regenerable waste-derived adsorbents may influence both the economic and environmental aspects of wastewater treatment, while also shedding light on emerging trends in the field. This progress is shaped by a complex balance of factors, including efficiency, cost-effectiveness, environmental impact, and technological viability. Utilizing waste-derived adsorbents in water purification provides dual benefits environmental and economic by diverting waste from landfills and promoting its valorization, aligning with green chemistry principles. Integrating adsorption technologies within the framework of a circular economy can enable the recovery and reuse of valuable resources from wastewater, thereby reducing the environmental burden of water treatment processes. Numerous waste materials including fruit and agricultural byproducts, have shown pollutant removal efficiencies between 65% and 97%. Production costs are mostly between 1.49 €/kg and 3.70 €/kg. A key finding from the perspective of the circular economy is that significant economic value can be derived from using waste-derived adsorbents. Adsorbent reuse and regeneration align with circular economy principles. From this perspective, the combined approach of regeneration, desorption, and reuse of waste-derived adsorbents accelerates the objectives of circular economy.

关键词： Circular economy Adsorption Waste-derived adsorbents Regeneration Reusability Cost analysis

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Applications of engineered biochar in remediation of heavy metal(loid)s pollution from wastewater: Current perspectives toward sustainable development goals

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science of the Total Environment 2024年 926卷 171859页

作者： Tran, Thien-Khanh Huynh, Loan Nguyen, Hoang-Lam Nguyen, Minh-Ky Lin, Chitsan Hoang, Tuan-Dung Hung, Nguyen Tri Q. Nguyen, X. Hoan Chang, S. Woong Nguyen, D. Duc Advanced Applied Sciences Research Group Dong Nai Technology University Bien Hoa City76100 Viet Nam Faculty of Technology Dong Nai Technology University Bien Hoa City76100 Viet Nam Department of Civil Engineering McGill University Montreal Canada Faculty of Environment and Natural Resources Nong Lam University Hamlet 6 Linh Trung Ward Thu Duc City Ho Chi Minh City700000 Viet Nam Ph.D. Program in Maritime Science and Technology National Kaohsiung University of Science and Technology Kaohsiung81157 Taiwan Department of Marine Environmental Engineering National Kaohsiung University of Science and Technology Kaohsiung81157 Taiwan School of Chemistry and Life Science Hanoi University of Science and Technology No. 1 Dai Co Viet Hai Ba Trung Hanoi100000 Viet Nam Vietnam National University Hanoi - School of Interdisciplinary Sciences and Arts 144 Xuan Thuy Street Cau Giay District Hanoi100000 Viet Nam Ho Chi Minh City University of Industry and Trade Ho Chi Minh City Viet Nam Department of Civil & Energy System Engineering Kyonggi University Suwon16227 Korea Republic of Institute of Applied Technology and Sustainable Development Nguyen Tat Thanh University Ho Chi Minh City700000 Viet Nam

environmental pollution of heavy metal(loid)s (HMs) caused adverse impacts, has become one of the emerging concerns and challenges worldwide. Metal(loid)s can pose significant threats to living organisms even when present in trace levels within environmental matrices. Extended exposure to these substances can lead to adverse health consequences in humans. Removing HM-contaminated water and moving toward sustainable development goals (SDGs) is critical. In this mission, biochar has recently gained attention in the environmental sector as a green and alternative material for wastewater removal. This work provides a comprehensive analysis of the remediation of typical HMs by biochars, associated with an understanding of remediation mechanisms, and gives practical solutions for ecologically sustainable. Applying engineered biochar in various fields, especially with nanoscale biochar-aided wastewater treatment approaches, can eliminate hazardous metal(loid) contaminants, highlighting an environmentally friendly and low-cost method. Surface modification of engineered biochar with nanomaterials is a potential strategy that positively influences its sorption capacity to remove contaminants. The research findings highlighted the biochars' ability to adsorb HM ions based on increased specific surface area (SSA), heightened porosity, and forming inner-sphere complexes with oxygen-rich groups. Utilizing biochar modification emerged as a viable approach for addressing lead (Pb), cadmium (Cd), arsenic (As), mercury (Hg), and chromium (Cr) pollution in aqueous environments. Most biochars investigated demonstrated a removal efficiency >90 % (Cd, As, Hg) and can reach an impressive 99 % (Pb and Cr). Furthermore, biochar and advanced engineered applications are also considered alternative solutions based on the circular economy. © 2024 Elsevier B.V.

关键词： Nanostructured materials

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Design of Vibration-Isolating Bed for Ambulances Using Inerter 12

Design of Vibration-Isolating Bed for Ambulances Using Inert...

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12th Asian Control Conference, ASCC 2019

作者： Koyanagi, Ryosuke Takahashi, Masaki School of Science for Open and Environmental Systems Graduate School of Science Technology Keio University Yokohama223-8522 Japan Department of System Design Engineering Faculty of Science and Technology Keio University Yokohama223-8522 Japan

ISBN: (纸本)9784888983006

A vibration-isolating bed for ambulances using an inerter is proposed. The structure of the bed is assumed to consist of a bottom frame fixed to the ambulance floor and an upper frame on which the stretcher is placed. Both are connected only by the suspension, including the inerter, in the vertical and horizontal directions. Because the inerter can reduce the gain of the high frequency band and delay the response, the time when maximum acceleration is applied to bed can be shortened by passively in a limited space in ambulance. We consider the bed as a plant and the suspension as a controller, and then formulate the state equation. To reduce the acceleration within the movable range of the bed, the controller that minimizes the H∞ norm of the transfer function from the external force acting on the bed to acceleration is calculated by bilinear matrix inequality. The transfer function determines the structure and coefficient of the suspension. The usefulness of the bed is verified by numerical simulations. © 2019 JSME.

关键词： Ambulances

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Correction to: Influence of sustained mild dehydration on thermoregulatory and cognitive functions during prolonged moderate exercise

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European journal of applied physiology 2024年第12期124卷 2024 Oct 9页

作者： Hironori Watanabe Yuma Kadokura Taisuke Sugi Kiyoshi Saito Kei Nagashima Institute for Energy and Environmental System Sustainable Energy & Environmental Society Open Innovation Research Organization Waseda University 3-4-1 Okubo Shinjuku-ku Tokyo 1698555 Japan. Advanced Research Center for Human Sciences Waseda University 2-579-15 Mikajima Tokorozawa Saitama 3591192 Japan. Body Temperature and Fluid Laboratory Faculty of Human Sciences Waseda University 2-579-15 Mikajima Tokorozawa Saitama 3591192 Japan. Infrastructure Systems Research & Development Center Toshiba Infrastructure Systems & Solutions Corporation Kawasaki Kanagawa 2129595 Japan. Department of Applied Mechanics and Aerospace Engineering School of Fundamental Science and Engineering Waseda University 3-4-1 Okubo Shinjuku-ku Tokyo 1698555 Japan. Institute for Energy and Environmental System Sustainable Energy & Environmental Society Open Innovation Research Organization Waseda University 3-4-1 Okubo Shinjuku-ku Tokyo 1698555 Japan. k-nagashima@waseda.jp. Body Temperature and Fluid Laboratory Faculty of Human Sciences Waseda University 2-579-15 Mikajima Tokorozawa Saitama 3591192 Japan. k-nagashima@waseda.jp.

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Near-real-time monitoring of global ocean carbon sink

arXiv

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arXiv 2023年

作者： Ke, Piyu Gui, Xiaofan Cao, Wei Wang, Dezhi Hou, Ce Wang, Lixing Song, Xuanren Li, Yun Zhu, Biqing Bian, Jiang Sitch, Stephen Ciais, Philippe Friedlingstein, Pierre Liu, Zhu Department of Earth System Science Tsinghua University Beijing China Department of Mathematics and Statistics Faculty of Environment Science and Economy University of Exeter Exeter United Kingdom Microsoft Research United States School of Mathematics and Statistics Lanzhou University Lanzhou China Department of Civil and Environmental Engineering The Hong Kong University of Science and Technology Hong Kong Institute of Remote Sensing and Geographical Information System School of Earth and Space Sciences Peking University Beijing China Department of Architecture faculty of Engineering Science KU Leuven Leuven Belgium Laxenburg2361 Austria Laboratoire des Sciences Climate et de l’Environnement LSCE Orme de Merisiers Gif-sur-Yvette91191 France The Cyprus Institute 20 Konstantinou Kavafi Street Nicosia2121 Cyprus Institute of Climate and Carbon Neutrality Department of Geography The University of Hong Kong Hong Kong

The ocean plays a critical role in modulating climate change by absorbing atmospheric CO2. Timely and geographically detailed estimates of the global ocean-atmosphere CO2 flux provide an important constraint on the global carbon budget, offering insights into temporal changes and regional variations in the global carbon cycle. However, previous estimates of this flux have a 1 year delay and cannot monitor the very recent changes in the global ocean carbon sink. Here we present a near-real-time, monthly grid-based dataset of global surface ocean fugacity of CO2 and ocean-atmosphere CO2 flux data from January 2022 to July 2023, which is called Carbon Monitor Ocean (CMO-NRT). The data have been derived by updating the estimates from 10 Global Ocean Biogeochemical Models and 8 data products in the Global Carbon Budget 2022 to a near-real-time framework. This is achieved by employing Convolutional Neural Networks and semi-supervised learning methods to learn the non-linear relationship between the estimates from models or products and the observed predictors. The goal of this dataset is to offer a more immediate, precise, and comprehensive understanding of the global ocean-atmosphere CO2 flux. This advancement enhances the capacity of scientists and policymakers to monitor and respond effectively to alterations in the ocean's CO2 absorption, thereby contributing significantly to climate change management. © 2023, CC BY.

关键词： Carbon dioxide

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