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SSRN 2024年

作者： Liu, Haiyang Tian, Hanqin Wang, Siyuan Chen, Guangsheng Feng, Zhaozhong Liu, Di Zhang, Wenxiu Pan, Shufen State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing China University of Chinese Academy of Sciences Beijing China College of Environmental and Resource Sciences Zhejiang A&F University Hangzhou311300 China School of Applied Meteorology Nanjing University of Information Science and Technology China Center for Earth System Science and Global Sustainability Department of Engineering and Environmental Studies Program Boston College Chestnut HillMA United States Center for Earth System Science and Global Sustainability Schiller Institute for Integrated Science and Society Department of Earth and Environmental Sciences Boston College Chestnut HillMA United States

Tropospheric ozone (O3) pollution can significantly affect crop yield. O3 concentrations are continuously rising in China. However, the long-term impacts of O3 pollution on crop yield over a long-term period have not yet well quantified due to the limitation of accurate spatiotemporal data and extrapolation methods. Based on a high resolution O3 dataset (HrSOD), here we analyzed the spatiotemporal O3 pollution patterns and their impacts on yield and resultant economic losses for wheat, rice, and maize in China during 2005-2020. Our results showed that daytime O3 concentrations (M7) increased by 2%, and AOT40 increased by 10% during 2005-2019. O3 trends diverged before and after China's 2013 Clean Air Action Plan between the southern and northern regions. Based on the observational data collected from literature and O3 gradient experiments in Asia, we fitted the O3 exposure-yield response curves, and then the relative yield loss (RYL) was assessed. Rising O3 pollution reduced national level wheat, rice and maize yields by 12.94-15.52%, 8.91-14.67%, and 4.13-4.9%, respectively, during 2005-2020. The O3-induced yield losses showed large spatiotemporal variations with higher losses in the northern China. Mean annual crop production losses reached 16.48 million tonnes (Mt) for wheat, 22.84 Mt for rice and 9.42 Mt for maize. The corresponding economic losses were USD 5.53 billion for wheat, 10.52 billion for rice and 1.70 billion for maize. While O3 declined across the southern China and the Tibetan Plateau, the northern China has witnessed an increased pollution and crop damage, highlighting the need for targeted mitigation policies in the northern China. Reduced O3 during 2020 COVID-19 lockdown period alleviated crop yield losses, demonstrating that curbing emissions could lessen damage. This long-term and high-resolution analysis provides robust evidence that rising O3 pollution has substantially affected China's staple cereal yields, causing considerable production an

关键词： COVID-19

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Controlling effects of terrestrial organic matter on metal contamination and toxicity risks in port sediments

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Marine Pollution Bulletin 2024年 201卷 116245页

作者： Chen, Chih-Feng Lim, Yee Cheng Wang, Ming-Huang Albarico, Frank Paolo Jay B. Hsu, Chieh-Wei Chen, Chiu-Wen Dong, Cheng-Di Department of Marine Environmental Engineering National Kaohsiung University of Science and Technology Kaohsiung City81157 Taiwan Center for the Study of Sediments National Kaohsiung University of Science and Technology Kaohsiung City81157 Taiwan Institute of Aquatic Science and Technology National Kaohsiung University of Science and Technology Kaohsiung City81157 Taiwan Sustainable Environment Research Center National Kaohsiung University of Science and Technology Kaohsiung City81157 Taiwan Cross College Elite Tech Program National Kaohsiung University of Science and Technology Kaohsiung City81157 Taiwan

The contents of metals, total carbon, total nitrogen (TN), total organic carbon (TOC), and stable isotope composition (δ13Corg and δ15N) of sediment organic matter (SOM) were investigated to explore the sources and spatial distribution of metals and SOM in the surface sediments (Kaohsiung Port, Taiwan). Results showed that TOC and metals in estuarine sediments are high, gradually decreasing toward the port entrances. The δ13Corg, δ15N, and TOC/TN ratios indicate that SOM comes mainly from terrestrial sources. This study proposes a befitting model between metal pollution and toxicity risk index and SOM sources in port sediments by combining stable isotope composition, correlation matrix, and multiple linear regression analysis. The model indicates that the degree of metal pollution and toxicity risk in sediments are mainly affected by TOCterr content and SOM source. The results help to understand the influence of organic matter sources in port sediments on metal concentration distribution. © 2024 Elsevier Ltd

关键词： Nitrogen

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Optimizing cultivation strategies and scaling up for fucoxanthin production using Pavlova sp.

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Bioresource Technology 2024年 399卷 130609页

作者： Chen, Chun-Yen Liu, Ping-Yung Chang, Yu-Han Nagarajan, Dillirani Latagan, Mary Joy D. de Luna, Mark Daniel G. Chen, Jih-Heng Chang, Jo-Shu University Center for Bioscience and Biotechnology National Cheng Kung University Tainan Taiwan Department of Biotechnology and Bioindustry Sciences National Cheng Kung University Tainan701 Taiwan Department of Chemical Engineering National Cheng Kung University Tainan Taiwan Institute of Aquatic Science and Technology College of Hydrosphere Science National Kaohsiung University of Science and Technology Nanzih Campus Kaohsiung City Taiwan Energy Engineering Program National Graduate School of Engineering University of the Philippines Diliman Quezon City1101 Philippines Environmental Engineering Program National Graduate School of Engineering University of the Philippines Quezon City Diliman1101 Philippines Department of Chemical Engineering University of the Philippines Diliman Quezon City1101 Philippines Department of Chemical and Materials Engineering National Kaohsiung University of Science and Technology Kaohsiung807 Taiwan Department of Chemical and Materials Engineering Tunghai University Taichung407 Taiwan Research Center for Smart Sustainable Circular Economy Tunghai University Taichung407 Taiwan Department of Chemical Engineering and Materials Science Yuan Ze University Chung-Li Taiwan

The microalgal-based production of fucoxanthin has emerged as an imperative research endeavor due to its antioxidant, and anticancer properties. In this study, three brown marine microalgae, namely Skeletonema costatum, Chaetoceros gracilis, and Pavlova sp., were screened for fucoxanthin production. All strains displayed promising results, with Pavlova sp. exhibiting the highest fucoxanthin content (27.91 mg/g) and productivity (1.16 mg/L·day). Moreover, the influence of various cultivation parameters, such as culture media, salinity, sodium nitrate concentration, inoculum size, light intensity, and iron concentration, were investigated and optimized, resulting in a maximum fucoxanthin productivity of 7.89 mg/L·day. The investigation was further expanded to large-scale outdoor cultivation using 50 L tubular photobioreactors, illustrating the potential of Pavlova sp. and the cultivation process for future commercialization. The biomass and fucoxanthin productivity for the large-scale cultivation were 70.7 mg/L·day and 4.78 mg/L·day, respectively. Overall, the findings demonstrated considerable opportunities for fucoxanthin synthesis via microalgae cultivation and processing. © 2024 Elsevier Ltd

关键词： Microalgae

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Unveiling Microplastics Abundance and Mangrove Reactions: A Comprehensive Study in the Pekalongan Mangrove Area

SSRN

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SSRN 2025年

作者： Ismanto, Aris Zainuri, Muhammad Hadibarata, Tony Ismunarti, Dwi Haryo Safinatunnajah, Novia Rahmansyah, Raihan Anandra Sugianto, Denny Nugroho Rochaddi, Baskoro Kristanti, Risky Ayu Hernawan, Undang Purbani, Dini Department of Oceanography Faculty of Fisheries and Marine Science Universitas Diponegoro Semarang50275 Indonesia Environmental Engineering Program Faculty of Engineering and Science Curtin University Malaysia Miri CDT 250 Malaysia Department of Marine Science Faculty of Fisheries and Marine Science Universitas Diponegoro Semarang50275 Indonesia Research Center for Oceanography National Research and Innovation Agency Jakarta14430 Indonesia Research Center for Conservation of Marine Resources and Inland Waters Cibinong16911 Indonesia Diponegoro University Indonesia Curtin University Australia

Mangrove ecosystem in Pekalongan city provides significant ecological functions, biodiversity hot spots, economic and social benefits, ecosystem services, coastal protection, and sources of livelihood for local people in Central Java. Currently, this mangrove ecosystem is undergoing significant degradation, primarily due to anthropogenic activities such as waste from the batik industry, textile production, and residential areas., Mangroves, which are a fence between land and sea, are very likely to be exposed to microplastic waste. Waters and sediment samples were analyzed to find the microplastics at mangrove area. The analyzed of shape, size and colors using Microscope Motic SMZ-161 equipped with camera and the functional group of the polymers were analyzed using ATR-FTIR. From this research the microplastics abundance were 109 particles/l from total of all research stations in the water column and 153 particles/kg from total of all research stations in the sediment. The functional group polymer identified the polyamide, polystyrene, rayon, polyethylene terephthalate, polyethylene, and polyester at this research area. The anthropogenic activities in this area will increase waste in the form of microplastics and other chemicals, which will end up in marine waters and can have an impact on the mangrove growth and health. © 2025, The Authors. All rights reserved.

关键词： Anthropogenic

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Wetting challenges in treatment of raw textile wastewater by membrane distillation: A case study

Case Studies in Chemical and Environmental Engineering

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Case Studies in Chemical and environmental engineering 2025年 11卷

作者： Rodrigues, Mariana E. Cucciniello, Raffaele Farinha, Andreia Vrouwenvelder, Johannes Fortunato, Luca Biological & Environmental Science & Engineering Division (BESE) King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia Environmental Science & Engineering Program (EnSE) King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia Dipartimento di Chimica e Biologia Università di Salerno Via Papa Paolo Giovanni II Fisiciano SA 84100 Italy Department of Biotechnology Faculty of Applied Sciences Delft University of Technology Van der Maasweg 9 HZ Delft 2629 Netherlands Department of Civil Building and Environmental Engineering University of Napoli Federico II Via Claudio 21 Napoli 80125 Italy

This case study investigated the effectiveness of Direct Contact Membrane Distillation (DCMD) in treating real textile wastewater. Textile wastewater treatment presents a critical challenge in the field of environmental sustainability, requiring innovative approaches for its treatment to mitigate adverse impacts on ecosystems. DCMD emerges as a promising solution for the treatment and reuse of textile wastewater. However, the intricate composition of real textile wastewater represents a major bottleneck for the process, as the effectiveness of DCMD is influenced by numerous factors, complicating its application. In this study, experiments with an untreated sample demonstrate the detrimental impact of suspended solids on membrane performance. The application of simple pretreatment steps prior to DCMD, involving sedimentation and filtration, substantially enhanced the quality of the permeate, resulting in 100 % color removal, 99.99 % turbidity removal, and considerable removal rates for Chemical Oxygen Demand (COD) and Total Organic Carbon (TOC). Nevertheless, wetting remained a significant issue, as evidenced by the persistence of commonly used volatile organic contaminants and surfactants in the textile industry detected within the permeate. The findings in this case study reinforce that DCMD holds promise for textile wastewater treatment but emphasize the necessity of pretreatment and wetting mitigation strategies to fully unlock its potential. This research offers crucial insights for future MD applications in addressing the complexities of textile wastewater treatment. © 2025 The Authors

关键词： Direct contact membrane distillation (DCMD) Industrial wastewater reuse Membrane wetting Optical coherence tomography (OCT) Pretreatment strategies Textile wastewater treatment Volatile organic contaminants

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Countering the effects of urban green gentrification through nature-based solutions: A scoping review

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Nature-Based Solutions 2024年 5卷

作者： Bressane, Adriano Pinto, Joao Pedro da Cunha Medeiros, Líliam César de Castro São Paulo State University (UNESP) Institute of Science and Technology São José dos Campos city Brazil Graduate Program in Civil and Environmental Engineering São Paulo State University (UNESP) Brazil

Statement of problem: Green gentrification is an emerging issue, where Urban green space (UGS) upgrades lead to higher living costs, displacing lower-income residents, raising concerns about accessibility, sustainability, and equity. This phenomena challenges the inclusive and equitable development of urban environments. Purpose: Through an integrative analysis of existing literature, this study aims to address a significant gap in current research by exploring how Nature-Based Solutions (NbS) can more effectively counteract the adverse effects of UGS gentrification. Method: Utilizing a scoping literature review, the research analyzes articles from 2015 to 2024 to synthesize insights for a more equitable urban development. Results: Findings reveal diverse lessons learned and strategies for countering green gentrification across different urban settings worldwide. However, a significant number of studies predominantly focus on the Global North, primarily in Europe and North America, which may lead to a regional bias. Practical implications: The results provide insights for policymakers, urban planners, and communities, guiding the creation of more inclusive and sustainable urban green spaces. Future directions: Further research should focus on developing quantitative metrics to evaluate the effectiveness of NbS in mitigating urban gentrification and expanding the geographic focus to include more underrepresented regions. © 2024 The Author(s)

关键词： environmental justice Green gentrification Nature-based solutions Review Urban greening

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Isolated Pt atoms tethered to N-doped MoSx as highly efficient and sustainable hydrogen evolution reaction electrocatalyst

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Applied Surface science 2023年 614卷

作者： Lee, Ting-Wei Lo, Ying-Chen Wu, Chia-Hua Ho, Cheng-Yuan Alamani, Bryan G. Chen, Jeng-Lung Chen, Chiaying Department of Environmental Engineering National Chung Hsing University Taichung City402 Taiwan Department of Materials Science and Engineering National Yang Ming Chiao Tung University Hsinchu300 Taiwan Department of Chemical Engineering College of Engineering University of the Philippines Diliman Quezon City1101 Philippines Environmental Engineering Program College of Engineering University of the Philippines Diliman Quezon City1101 Philippines National Synchrotron Radiation Research Center Hsinchu30076 Taiwan

In this work, synergistic NH4+ intercalation and nitrogen-containing molecule doping realize a crystalline-to-amorphous (i.e., MoSx) structure transition with enhanced HER reactivity and superior stability obtained via structural distortion and abundant active sites. The applied N dopants partially replace the bridging S22− and form Mo-N bonds, where the alkyl N-dopant tetramethylammonium chloride (TEA) achieves the most effective doping. The HER activity increases with an increasing number of bridging S22− and MoⅤ species, both of which contribute to advance electrocatalytic performance. Furthermore, N-doped MoSx is identified as an exceptional stabilizing platform to anchor single Pt atoms (PtSA) through Pt-S bonding, rendering MoSx/TEA/PtSA a highly promising electrocatalyst. MoSx/TEA/PtSA achieved comparable performance to that of the benchmark Pt/C catalyst (i.e., a cathodic current density of 10 mA·cm−2 at overpotential of 97 mV) with much lower loading of Pt (0.67 wt%). Theoretical calculations based on density functional theory indicate that Pt atoms and Pt-adjacent sulfur atoms act as active sites. The superior interfacial electron transfer and thus HER performance of MoSx/TEA/PtSA arises from (1) boosted electronic metal-support interaction through Pt-S bonds and (2) enhanced H adsorption ability of Pt-adjacent sulfur atoms due to Pt coordination. © 2022 Elsevier B.V.

关键词： Doping (additives)

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Emission characteristics of naphthalene from ship exhausts under global sulfur cap

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science of the Total Environment 2023年 902卷 166172页

作者： Yeh, Chin-Ko Tzu, Fu-Ming Chen, Po-Yang Shen, Hsueh-Chen Yuan, Chung-Shin Lin, Chitsan Pu, Han-Pin Ngo, Huu Hao Bui, Xuan-Thanh Department of Marine Engineering National Kaohsiung University of Science and Technology Kaohsiung805301 Taiwan Department of Marine Environmental Engineering National Kaohsiung University of Science and Technology Kaohsiung811213 Taiwan Ph.D. Program in Maritime Science and Technology National Kaohsiung University of Science and Technology Kaohsiung811213 Taiwan Institute of Environmental Engineering National Sun Yat-sen University Kaohsiung804201 Taiwan School of Civil and Environmental Engineering University of Technology Sydney SydneyNWS2007 Australia 268 Ly Thuong Kiet Street District 10 Ho Chi Minh City Viet Nam Linh Trung ward Ho Chi Minh City700000 Viet Nam

The global sulfur limit regulation mandates the use of 0.5 % low sulfur fuel oil (LSFO) to reduce emissions of sulfur oxides (SOx), nitrogen oxides (NOx), and particulate matter (PM). However, the addition of naphthalene (Nap) to LSFO to stabilize its quality has led to an increase in polycyclic aromatic hydrocarbons (PAHs), with Nap being the main pollutant. This study investigates the effects of Nap in ship exhaust by analyzing the emission concentrations of volatile organic compounds (VOCs) and Nap in the exhaust of 16 ships, including 2 container ships, 6 bulk carriers, 1 tanker, 2 ferries, 3 fishing vessels, and 2 harbor crafts, based on USEPA method TO-15A. The results show that the percentage of Nap emissions in the exhaust gases of the 16 ship engines ranged from 77 % to 97 % of the total volatile organic compound (TVOC). The Nap concentration in the exhaust of fishing vessels, tanker, and harbor craft exceeded the occupational exposure limit of 50,000 μg/m3, with fishing vessels having the highest TVOC and Nap concentrations. The enhanced Nap emission in the air degrades air quality in port cities and poses an obvious potential public health risk. While the benefits of the global sulfur cap are being secured, additional efforts should be made to reduce the undetected side effects. Alternative stabilizers of LSFO should be considered, or Nap emission control should be boosted to mitigate the potential negative impact on harbor air quality. © 2023 Elsevier B.V.

关键词： Air quality

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Unveiling Processing–Property Relationships in Laser Powder Bed Fusion: The Synergy of Machine Learning and High-throughput Experiments

arXiv

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arXiv 2024年

作者： Amiri, Mahsa Foumani, Zahra Zanjani Cao, Penghui Valdevit, Lorenzo Bostanabad, Ramin Materials and Manufacturing Technology Program University of California IrvineCA92697 United States Department of Mechanical and Aerospace Engineering University of California IrvineCA92697 United States Department of Materials Science and Engineering University of California IrvineCA92697 United States Department of Civil and Environmental Engineering University of California IrvineCA92697 United States

Achieving desired mechanical properties in additive manufacturing requires many experiments and a well-defined design framework becomes crucial in reducing trials and conserving resources. Here, we propose a methodology embracing the synergy between high-throughput (HT) experimentation and hierarchical machine learning (ML) to unveil the complex relationships between a large set of process parameters in Laser Powder Bed Fusion (LPBF) and selected mechanical properties (tensile strength and ductility). The HT method envisions the fabrication of small samples for rapid automated hardness and porosity characterization, and a smaller set of tensile specimens for more labor-intensive direct measurement of yield strength and ductility. The ML approach is based on a sequential application of Gaussian processes (GPs) where the correlations between process parameters and hardness/porosity are first learnt and subsequently adopted by the GPs that relate strength and ductility to process parameters. Finally, an optimization scheme is devised that leverages these GPs to identify the processing parameters that maximize combinations of strength and ductility. By founding the learning on larger "easy-to-collect" and smaller "labor-intensive" data, we reduce the reliance on expensive characterization and enable exploration of a large processing space. Our approach is material-agnostic and herein we demonstrate its application on 17-4PH stainless steel. © 2024, CC BY.

关键词： Global positioning system

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Critical evaluation of extracellular polymeric substances extraction methods: Extraction efficiency, molecular characteristics, and heavy metals binding properties

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science of the Total Environment 2025年 959卷 178345页

作者： Ou, Bei Hu, Xueyang Yu, Wenbo Meng, Fanhao Li, Wen Liang, Sha Yuan, Shushan Duan, Huabo Hou, Huijie Xiao, Keke 1037 Luoyu Road Hubei Wuhan430074 China Hubei Provincial Engineering Laboratory of Solid Waste Treatment Disposal and Recycle Technology Hubei Wuhan430074 China Hubei Provincial Research Center of Water Quality Safety and Water Pollution Control Engineering Technology Hubei Wuhan430074 China State Key Laboratory of Coal Combustion Huazhong University of Science and Technology Hubei Wuhan430074 China Environmental Science and Engineering Program Guangdong Technion-Israel Institute of Technology 241 Daxue Road Guangdong Shantou515063 China

Extracellular polymeric substances (EPS) significantly influence the properties and performance of waste activated sludge. Various pretreatment protocols with different extraction efficiency and characteristics of EPS have been reported, which markedly impact subsequent treatment and disposal of sewage sludge. This study systematically assesses the EPS properties from twelve extraction pretreatment methods. The organic and inorganic matters content, cell lysis, basic physicochemical property, molecular weight distribution, and fluorescence properties of extracted EPS were determined. Physical extraction methods (Centrifugation, Heat, and Ultrasound) were relatively mild, resulting in lower extraction of organic matter contents from EPS (3 Da) generation. Chemical extraction methods offered efficient EPS extraction with the different degrees of cell lysis, but it would introduce chemical reagent residues in EPS. Among those extraction methods, EPS extracted by cation exchange resin (CER) method had uniform and abundant molecular weight matters and fluorescence matters distribution. After dialysis, the residual Na and other metal elements could be significantly removed. Then, the fluorescence quenching effect of Cu(II) and Zn(II) at 400 μM on the Bound-EPS after dialysis increased up to the maximum value of 65 % and 30 %, respectively, compared to that without dialysis. It indicates that dialysis coupled with CER extracted EPS has a well extraction efficiency and can maintain the original state of EPS for the subsequent investigation. © 2024 Elsevier B.V.

关键词： Fluorescence quenching

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