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Determinant of importance-performance and willingness to participate in Komodo adaptive conservation programs

Journal for Nature Conservation 2024年 81卷

作者： Sianipar, Imelda Masni Juniaty Lee, Chun-Hung Wang, Hurng-Jyuhn Kim, Doo-Chul Suryawan, I Wayan Koko PhD Student in Asia-Pacific Regional Studies College of Humanities and Social Sciences National Dong Hwa University Department of International Relations Faculty of Social Science and Political Science Universitas Kristen Indonesia Department of Natural Resources and Environmental Studies College of Environmental Studies and Oceanography National Dong Hwa University Program in Asia-Pacific Regional Studies College of Humanities and Social Sciences National Dong Hwa University Department of Rural Environment Management Graduate School of Environmental and Life Science Okayama University Ph.D Program in Asia-Pacific Regional Studies College of Humanities and Social Sciences National Dong Hwa University Department of Environmental Engineering Faculty of Infrastructure Planning Universitas Pertamina Jalan Sinabung II Terusan Simprug

This study delves into the evaluation of the Komodo dragons Adaptive Conservation program (KACP) at Komodo National Park in Indonesia through Importance-Performance Analysis (IPA). It aims to understand how the programs components align with community priorities and assess its effectiveness. Utilizing a mixed-methods approach, this research analyzes community perceptions of KACP's critical elements, spanning eco-tourism initiatives to environmental protection strategies. The community is categorized into local advocates, eco-tourism enthusiasts, and eco-community harmonizers, identifying how each group perceives and interacts with various facets of KACP. The findings reveal significant differences in perceptions of importance and performance among these groups, providing insights into areas of strength and those needing improvement. Additionally, the study includes an analysis of demographic influences on these perceptions through Logit and Probit models, aiming to understand the impacts across different community segments. The results highlight the necessity for an adaptive and responsive design in conservation efforts, considering community expectations and ecological impacts. Despite offering comprehensive insights, the study acknowledges limitations in the demographic scope and suggests future research directions, such as longitudinal studies and an expanded analysis of variables. These findings offer critical guidance for policymakers and conservation practitioners to enhance conservation programs’ effectiveness and community alignment, emphasizing the need to adapt to the challenges and changes introduced by KACP. © 2024 Elsevier GmbH

关键词： Adaptive capacity Community perception Conservation strategy evaluation Importance-performance analysis Protected areas

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Modeling Nonequilibrium Multispecies Contaminant Transport in Dual-Domain Permeable Reactive Barrier-Aquifer Systems: A Semi-Analytical Approach

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SSRN 2024年

作者： Suk, Heejun Liao, Zhong-Yi Liang, Ching-Ping Wang, Sheng-Wei Chen, Jui-Sheng Korea Institute of Geoscience and Mineral Resources Daejeon34132 Korea Republic of Center for Advanced Model Research Development and Applications National Central University Taoyuan320317 Taiwan Department of Nursing Fooyin University Daliao Dist. Kaohsiung83101 Taiwan Department of Water Resource and Environmental Engineering Tamkang University New Taipei251301 Taiwan Graduate Institute of Applied Geology National Central University Taoyuan32001 Taiwan Department of Earth Sciences National Central University Taoyuan32001 Taiwan

The transport behavior of contaminants through a permeable reactive barrier (PRB)-aquifer system is complex due to the diverse physical and chemical properties of the PRB and aquifer. Analytical or semi-analytical solutions for multispecies contaminant transport in a PRB-aquifer system of dual-domain are indispensable tools for enhancing our understanding of the effectiveness of PRB systems in remediating primary contaminant present in groundwater and its degradation byproducts. Many of the existing analytical or semi-analytical solutions derived for multispecies transport in a PRB-aquifer system presume an equilibrium sorption process between the contaminants in the aqueous and solid phases of both the up-gradient PRB and down-gradient aquifer. Past studies have unequivocally illustrated that nonequilibrium sorption process can profoundly affect contaminant transport within the subsurface environment. This study is thus designed to develop a novel semi-analytical solution for transport of multispecies, encompassing an original contaminant and its degradation byproducts, while considering nonequilibrium sorption within a PRB–aquifer system. The derived semi-analytical solution is shown to be both correct and accurate, with a comparative analysis revealing its numerical results to be closely consistent with those generated from the numerical solution. The results indicate that the kinetic sorption process plays a crucial role in influencing the effectiveness of using a PRB system for remediation purposes. The nonequlibrium sorption model forecasts higher concentrations compared to those predicted by the equilibrium sorption model. However, the difference between nonequlibrium sorption model and equlibrium sorption model diminishes as the kinetic sorption rate constant increases. This suggests that the length of the PRB might be underestimated when using an analytical solution assuming equilibrium sorption as the PRB design tool, especially in the scenarios with low

关键词： Aquifers

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Tracing the Pathways by Which Flood Duration Impacts Soil Bacteria Through Soil Properties and water-Extractable Dissolved Organic Matter: A Soil Column Experiment

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SSRN 2023年

作者： Sao, Sochan Ann, Vannak Nishiyama, Masateru Praise, Susan Watanabe, Toru The United Graduate School of Agricultural Sciences Iwate University 18-8 Ueda 3-chome Morioka Iwate020-8550 Japan Faculty of Hydrology and Water Resources Engineering Institute of Technology of Cambodia Russian Federation Blvd PO Box 86 Phnom Penh120404 Cambodia Department of Food Life and Environmental Sciences Faculty of Agriculture Yamagata University 1-23 Wakaba-machi Tsuruoka Yamagata997-8555 Japan

Flooding in wetlands affects the soil microbial communities that control biogeochemical and nutrient cycling and organic carbon storage and release. To predict soil nutrient function in ecosystems, it is essential to better understand the hydrological conditions that affect soil biogeochemical cycling and energy flux characteristics, including soil properties, dissolved organic matter (DOM), and microbial communities. This study investigated how different flood durations (1, 3, 8, 16, and 30 d) affect the interactions between soil physicochemical properties and bacterial communities in a river wetland. The DOM composition was measured using ultraviolet/visible spectrophotometry coupled with fluorescence spectroscopy, and the bacterial communities were identified using 16S rRNA sequencing. The highest bacterial diversity, with Simpson's diversity index varying from 0.92 to 0.94, was found throughout the flood conditions;however, the lowest diversity was found at 8 flooding days. The abundance of Desulturomonadales, Clostridiales, Bacteroidales, and Gaiellales was positively correlated with soil pH, electrical conductivity (EC), water-extractable dissolved organic carbon (WEOC), and water-extractable total dissolved nitrogen (TDN) but negatively correlated with soil organic matter (SOM), suggesting complex interactions among these factors in response to flooding. The structural equation model revealed that flooding directly increased TDN but indirectly increased WEOC through increased EC. The bacterial diversity was directly influenced by changes in soil pH, WEOC, and total protein-like fractions associated with soil EC, SOM, TDN, and total humic-like fractions. Three significant pathways were identified: (1) flood duration increased soil pH, resulting in decreased bacterial diversity;(2) flood duration decreased WEOC, leading to increased bacterial diversity;and (3) flood duration decreased SOM, leading to decreased bacterial diversity via a reduction in total humic-

关键词： Wetlands

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A sustainable approach for selective ammonium recovery from wastewater: synergy of microbial fuel cell and battery deionization

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Desalination 2025年 613卷

作者： Po-Yen Wang Shao-Wei Tsai Cuijie Feng Chia-Hung Hou Graduate Institute of Environmental Engineering National Taiwan University Taipei 10617 Taiwan Center for Water Resources and Environment School of Civil Engineering Sun Yat-sen University Guangzhou 510275 China Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) Zhuhai 519082 China

The approach to sewage treatment is evolving from conventional pollutant removal methods to adopting a circular economy that focuses on energy and resource recovery. Ammonium ions (NH 4 + ) serve as a crucial industrial resource but also contribute to environmental pollution, particularly in sewage, leading to various ecological issues. Therefore, the development of an NH 4 + selective recovery technology with low energy consumption is imperative. In this study, we present a novel approach called MFC-BDI, which combines the technologies of microbial fuel cell (MFC) and battery deionization (BDI). The integrated system utilizes a nickel hexacyanoferrate (NiHCF) electrode with a selective affinity for NH 4 + , enabling the achievement of NH 4 + recovery with low energy demand and an appropriately operated voltage. Within this integrated system, the MFC initially degrades the organic matter in the water, generating bioelectricity that powers the subsequent operation of the BDI unit. The MFC-BDI system operated without requiring additional energy input, achieving a voltage of approximately 0.55 V and a charge efficiency of 81%. As demonstrated, with regard to NH 4 + , the MFC-BDI system exhibited a mean deionization capacity of 0.32 mmol/g, surpassing that of other cations in wastewater. Moreover, the selectivity coefficient of NH 4 + over Na + was found to be 16.28, indicating the preferential intercalation of NH 4 + over Na + by the NiHCF cathode. This finding introduces a proof-of-concept for integrating the MFC and BDI systems, providing valuable insights to develop a sustainable approach for NH 4 + recovery.

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Enhanced Persulfate Activation by Sulfur-Modified Fe3o4 Composites for Atrazine Degradation: Performance and Mechanism

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SSRN 2022年

作者： Zheng, Han Du, Jiangkun Zhong, Hua Yuan, Qian Zhang, Jiaquan Kang, Wei Sun, Qingbin Tao, Min Xiao, Wensheng Dionysiou, Dionysios D. Huang, Ying Hubei Key Laboratory of Mine Environmental Pollution Control and Remediation Hubei Polytechnic University Huangshi435003 China School of Environment Hangzhou Institute for Advanced Study University of Chinese Academy of Sciences Hangzhou310024 China School of Environmental Studies China University of Geosciences Wuhan430074 China State Key Laboratory of Water Resources and Hydropower Engineering Science Wuhan University Wuhan430072 China School of Earth and Space Exploration Arizona State University TempeAZ United States School of Environmental Science and Engineering Hubei Polytechnic University Huangshi435003 China Environmental Engineering and Science Program Department of Chemical and Environmental Engineering 705 Engineering Research Center University of Cincinnati CincinnatiOH45221-0012 United States

A novel sulfur-modified Fe3O4 composite (SF10) with excellent magnetic properties and core-shell structure was prepared via a solvothermal method. Compared with unmodified Fe3O4, SF10 exhibited excellent performance on the activation of peroxydisulfate (PDS) for atrazine degradation and maintained good reusability. According to the quenching experiments and electron paramagnetic resonance (EPR) test, hydroxyl radical (•OH) and sulfate radical (SO4•−) were the main active species. Characterizations revealed that sulfur modification introduced pyrite and pyrrhotite phases into Fe3O4 to improve the catalytic activity and electrical conductivity. Density functional theory calculations showed that sulfur modification enhanced the electron transfer from Fe3O4 to PDS and the adsorption of PDS on the catalyst surface, favoring the PDS activation. Moreover, the surface reducing sulfur species (≡S2− and ≡S22−) acted as the electron donor for Fe(II) regeneration, driving a faster Fe(II)/Fe(III) redox cycle of SF10 for the activation of PDS. This study provides insights of the synergism between sulfur and iron, and broadens the application of Fe3O4 in PDS-based advanced oxidation processes for wastewater treatment. © 2022, The Authors. All rights reserved.

关键词： Magnetite

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Machine learning models coupled with empirical mode decomposition for simulating monthly and yearly streamflows: a case study of three watersheds in Ontario, Canada

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engineering Applications of Computational Fluid Mechanics 2023年第1期17卷

作者： Parisouj, Peiman Jun, Changhyun Bateni, Sayed M. Heggy, Essam Band, Shahab S. Department of Smart Cities Chung-Ang University Seoul South Korea Department of Civil and Environmental Engineering and Water Resources Research Center University of Hawaii at Manoa Honolulu HI United States Department of Civil and Environmental Engineering Chung-Ang University Seoul South Korea Viterbi School of Engineering University of Southern California Los Angeles CA United States Jet Propulsion Laboratory California Institute of Technology Pasadena CA United States Department of Information Management International Graduate School of Artificial Intelligence National Yunlin University of Science and Technology Douliou Taiwan

This paper presents a novel approach for enhancing long-term runoff simulations through the integration of empirical mode decomposition (EMD) with four machine learning (ML) models: ensemble, support vector machine (SVM), convolutional neural networks (CNN), and artificial neural networks with backpropagation (ANN-BP). The proposed methodology uses EMD to decompose precipitation and temperature time-series into intrinsic mode functions, thereby revealing underlying data patterns. Subsequently, these components are incorporated into the ML models to simulate the runoff time-series. The effectiveness of the hybrid models is evaluated using streamflow runoff data obtained from the Grand, Winnipeg, and Moosonee Rivers in Ontario, Canada. Four widely used performance indices, namely, correlation coefficient, root mean square error (RMSE), mean absolute relative error, and Nash–Sutcliffe efficiency, are employed to assess the models’ performance. The results demonstrate that the hybrid EMD-ML models exhibit significantly superior performance compared with the standalone ML methods. During the validation phase, the EMD-Ensemble, EMD-SVM, EMD-CNN, and EMD-ANN-BP models exhibit notable reductions in the RMSEs of monthly streamflow estimates for the Grand River, amounting to 11%, 22%, 8%, and 33%, respectively, compared with their non-EMD counterparts. Additionally, these hybrid models exhibit improved RMSEs for yearly simulations in the Winnipeg River, with reductions of 54%, 0.08%, 6%, and 4.5% respectively. To further enhance the accuracy of monthly and yearly streamflow estimates, an SVM-recursive feature elimination technique is employed to select a more appropriate EMD dataset in all study cases. This research underscores the potential of integrating EMD with ML models to enhance long-term runoff simulations. The outcomes highlight the superior performance of the hybrid EMD-ML models, demonstrating their ability in generating lower biases than the standalone ML methods.

关键词： EMD method ensemble model Machine learning runoff estimation

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Impact of spatial and temporal changes in climate on the Kunhar River watershed, Pakistan

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Arabian Journal of Geosciences 2022年第15期15卷 1-14页

作者： Nabi, Ghulam Tayyab, Muhammad Akbar, Haseeb Arfan, Muhammad Ahmad, Ijaz Masood, Muhammad Zahra, Aqeela Center of Excellence in Water Resources Engineering University of Engineering and Technology Lahore Pakistan College of Hydraulic and Environmental Engineering China Three Gorges University Yichang China College of Economics and Management China Three Gorges University Yichang City China The Joint Graduate School of Energy and Environment King Mongkut’s University of Technology Thonburi Bangkok Thailand Center of Excellence on Energy Technology and Environment PERDO Ministry of Higher Education Science Research and Innovation Bangkok Thailand US-Pakistan Center for Advanced Studies in Water MUET Jamshoro Pakistan School of Chemistry Chemical Engineering and Life Sciences Wuhan University of Technology Wuhan China Department of Zoology University of Sialkot Sialkot Pakistan

The present study explores the spatio-temporal variation in the projected runoff due to the Kunhar River basin climate changes. To project the future climate, two global circulation models (CGMs), Meteorological Research Institute Coupled Ocean-Atmosphere General Circulation Model 3 (MRI-CGCM3) and Hadley Centre Global environmental Model version 2 (HadGEM AO2), were used under the Representative Concentration Pathway (RCP) 4.5, 8.5 scenarios. The Soil and water Assessment Tool (SWAT) was used as a hydrological model. By combining the results of both GCM, it was found that the average annual precipitation, minimum, and maximum temperature may increase by 336 (238–434) mm, 4.2 (2.78–5.6) °C, and 4.2 (2.9–5.4) °C, respectively, in comparison to baseline values, until the end of this century. The annual streamflow may increase by 14% (14 m3/s) and 20% (20 m3/s) under RCP 4.5 and RCP 8.5, respectively, in the far future. However, the changes in seasonal flow are more likely to be dominated by the annual. Peak flow may shift slightly backward compared to the baseline. The seasonal changes in runoff due to climate change may lead to different issues, viz., drought, water scarcity, and floods.

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Hydrophobicity and Membrane Distillation Performance of Glass Fiber Membranes Modified by Dip Coating of Pure Pdms

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SSRN 2023年

作者： Pyo, Minsu Jeong, Sanghyun Kim, Jae Hun Jeon, Min Jung Lee, Eui-Jong Department of Environmental Engineering Daegu University 201 Daegudae-ro Jillyang Gyeongsan-si Gyeongbuk38453 Korea Republic of Graduate School of Water Resources Sungkyunkwan University 2066 Seobu-ro Jangan-gu Gyeonggi-do Suwon440746 Korea Republic of Department of Civil and Environmental Engineering Pusan National University Busan46241 Korea Republic of Technology R&D Institute Daelim Industrial Co. Ltd. Joonghak-dong Jongno-gu Seoul110-140 Korea Republic of 125 Yuseong-daero 1689 beon-gil Yuseong-gu Daejeon34045 Korea Republic of

With growing concern for environmental issues associated with the use of has emerged as a promising and eco-friendly alternative. However, few studies have explored the application of pure PDMS solutions through dip coating to achieve hydrophobicity in membranes designed for membrane distillation;a process which demands the membranes possess specific porosity and pore size characteristics. This study explored how dip coating with different PDMS concentrations affected the hydrophobicity and physical properties of glass fiber membranes. Increasing the concentration of up to 15% resulted in a stepwise rise in hydrophobicity, but the functionality as a membrane was compromised when the concentration reached 20%. Hydrophobicity on the membrane surface was higher with 15% PDMS treatment than on the chemically grafted membrane, but the latter demonstrated superior performance in the membrane distillation process. Nevertheless, the study confirms the potential of the pure PDMS-coated membrane as a viable option for membrane distillation, with the possibility of enhancing performance through improvements in pore size and surface morphology. © 2023, The Authors. All rights reserved.

关键词： Dip coating

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Synergetic Application of Alum Sludge and Sequential Extraction for Phosphorus Recovery from Sewage Sludge Char

SSRN

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SSRN 2023年

作者： Tiwari, Satya Brat Chin, Sze Yuet Veksha, Andrei Chan, Wei Ping Fei, Xunchang Lisak, Grzegorz Liu, Wen Lim, Teik-Thye Nanyang Environment and Water Research Institute Nanyang Technological University 1 Cleantech Loop CleanTech One 637141 Singapore School of Civil and Environmental Engineering Nanyang Technological University 50 Nanyang Avenue 639798 Singapore Interdisciplinary Graduate Program Nanyang Technological University Singapore Centre of High Field NMR Spectroscopy and Imaging Nanyang Technological University 21 Nanyang Link 637371 Singapore School of Chemistry Chemical Engineering and Biotechnology Nanyang Technological University 62 Nanyang Drive 637459 Singapore

Phosphorus (P) recovery from sewage sludge (SS) (or its ash/char) is challenging due to the presence of heavy metals (HMs) in SS. This study proposed the integration of SS, alum sludge (AS), sequential wet extraction, and pyrolysis for P recovery without simultaneous HM extraction. SS+AS mixture (P:Al molar ratio = 3:1) was first acid pretreated to obtain amended SS, then pyrolyzed, and finally, P was extracted from the char using an alkali. Pyrolysis was conducted at low (400˚C), medium (600˚C), and high (900˚C) temperatures. The highest alkaline P recovery efficiency was 88% from the amended SS char, while 32% from the unamended SS char (both prepared at 400˚C). Overall, the highest P recovery in the amended process was 48% higher than the unamended process despite 11% P loss during acidic pretreatment. Standards measurements and testing (SMT) protocol and solid-state NMR (31P and 27Al) analyses revealed that acidic pretreatment of SS with AS induced apatite phosphate (AP) to non-apatite inorganic phosphate (NAIP) conversion in SS. As NAIP is more soluble in alkali than AP and HMs, higher alkaline P recovery was achieved for amended SS char than unamended SS char, without HM contamination. However, higher pyrolytic temperatures impaired P recovery due to the immobilization of P in the char carbon matrix and the formation of recalcitrant P phases. These findings were corroborated by complementary characterization techniques such as XPS, XRD, and FTIR. Some major HMs in SS and AS were concentrated in char, except Zn, which partially volatilized above 600˚C. This study demonstrated the applicability of AS for extracting P from SS, offering a potential pathway for the synergetic management of sludge waste streams. © 2023, The Authors. All rights reserved.

关键词： Sewage sludge

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Challenges and prospects of multilayer plastic waste management in several countries: A systematic literature review

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Case Studies in Chemical and environmental engineering 2024年 10卷

作者： Anwar, Mayrianti Annisa Suprihatin Sasongko, Nugroho Adi Najib, Mukhamad Pranoto, Bono Research Centre for Sustainable Production System and Life Cycle Assessment National Research and Innovation Agency (BRIN) Prof BJ Habibie Complex Area Banten 15314 Indonesia Natural Resources and Environmental Management Graduate Study Program IPB University Jl. Pajajaran IPB Baranangsiang Campus Bogor 16144 Indonesia Department of Agroindustrial Technology Faculty of Agricultural Technology Bogor Agricultural University (IPB) Kampus IPB Darmaga P.O. Box 220 Bogor Indonesia Energy Security Graduate Program Republic of Indonesia Defense University (UNHAN RI) IPSC Sentul Area West Java 16810 Indonesia Faculty of Economics and Management Jl. Agatis Kampus IPB Darmaga West Java Bogor 16680 Indonesia Research Center for Limnology and Water Resources National Research and Innovation Agency Bogor Indonesia

This systematic literature review employs the PICOC framework to structure research questions and the PRISMA method for comprehensive and transparent analysis. The study identifies key strategies to manage multilayer plastics effectively, including advanced chemical recycling technologies and policy interventions. A European case study highlights the development and application of innovative recycling techniques like solvent-targeted recovery, emphasizing the need for substantial investment and policy support. The review underscores the global disparity in recycling infrastructure, particularly between developed and developing countries, and advocates for tailored, context-specific solutions to advance circular economy principles in multilayer plastic waste management. © 2024 The Authors

关键词： Circular economy Multilayer plastic Recycle Waste management

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