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2021 AIChE Annual Meeting

作者： Mostafa, Mohamed K. Mahmoud, Ahmed S. Kamar, Mohamed T. Elshfai, Maha M. Moussa, M. Peters, Robert W. Cairo Egypt Egypt Environmental Engineering Program Zewail City of Science and Technology Giza Egypt Egypt Environmental Engineering Faculty of Engineering Mataria Helwan University Egypt Department of Civil Construction and Environmental Engineering University of Alabama at Birmingham BirminghamAL United States

ISBN: (纸本)9781713852834

Conventional wastewater treatment plants suffering from several industrial effluents overlap, trihalomethane (byproduct after free chlorine disinfection), and high construction cost. This study successfully prepared and compare a novel mixing of coagulants ferric/ferrous chloride (50:50) with other traditional individual coagulants such as ferric chloride, ferrous chloride, and aluminum chloride for domestic wastewater treatment. The results obtained indicated that the mixture of ferric/ferrous chloride is more efficient than other coagulants to meet the requirements of the Egyptian code for reuse of treated wastewater in different agricultural applications. Also, this study successfully replaced traditional chlorine addition by low-cost green synthesis of nano-Zero Valent Iron (GT-nZVI) for tertiary wastewater treatment. A continuous flow system was successfully built to achieve the treatment requirements in an economical and fast way. Finally, this study strongly supported using the proposed system rather than traditional wastewater treatment technologies in decentralized wastewater treatment units to overcome the combination of industrial effluents to the municipal wastewater networks and to reduce hazardous material produced after using traditional chlorine disinfectant. © 2021 American Institute of Chemical Engineers. All rights reserved.

关键词： Wastewater treatment

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High-resolution density profile of shallow ice core from the southeast Greenland dome drilled in 2021

High-resolution density profile of shallow ice core from the...

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作者： Takasugi, Keita Hori, Akira Kawakami, Kaoru Matsumoto, Mai Sasage, Mahiro Saito, Takeshi Iizuka, Yoshinori Graduate School Social and Environmental Engineering Program Kitami Institute of Technology Japan Department of Earth Energy and Environmental Engineering Kitami Institute of Technology Japan Graduate School of Environmental Science Hokkaido University Japan Institute of Low Temperature Science Hokkaido University Japan

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The Study of Solid Waste Management to Extend the Lifetime of Sukoharjo Landfill, Pati Regency 4

The Study of Solid Waste Management to Extend the Lifetime o...

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4th International Conference on Energy, Environment, Epidemiology and Information System, ICENIS 2019

作者： Viantikasari, Mei Purwanto, P. Budihardjo, Mochamad Arief Program in Environmental Science Diponegoro University Semarang50275 Indonesia Department of Chemical Engineering Diponegoro University Semarang50275 Indonesia Department of Environmental Engineering Diponegoro University Semarang50275 Indonesia

The waste generation increases along with the increase of population and then the percentage of waste services is increasing every year so the capacity of Sukoharjo landfill becomes decreasing. While to find a suitable location for new landfill sites that are completed requirements of regulation is difficult. It is needed some actions to extend the lifetime of Sukoharjo landfill, one of them is application 3R (Reduce, Reuse, Recycle) mechanism in waste management. This study aims to analyze the lifetime of Sukoharjo landfills with the mechanism of Reuse, Reduce and Recycle (3R). The method used in this research is quantitative and qualitative methods. Based on the calculation, the landfill only available until 2022. The existence of composting and recycling of anorganic waste, landfill lifetime will extend until 2025. Our results show that there is a significant comparison of the volume waste in landfills between untreated incoming trash with treated by Reduce, Reuse, Recycle (3R) mechanism. By 2028, the waste generation in a landfill will be 24,821,724 kg. During composting (30%) and recycling of anorganic waste (15%), the volume of waste in landfill is reduced to 14,401,796 kg. © The Authors, published by EDP sciences, 2019.

关键词： Recycling

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Beyond p-y method:A review of artificial intelligence approaches for predicting lateral capacity of drilled shafts in clayey soils

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Journal of Rock Mechanics and Geotechnical engineering 2024年第9期16卷 3812-3840页

作者： M.E.Al-Atroush A.E.Aboelela Ezz El-Din Hemdan Civil and Environmental Engineering Program Engineering Management DepartmentCollege of EngineeringPrince Sultan UniversityRiyadhSaudi Arabia Department of Structural Engineering Faculty of EngineeringAin Shams UniversityCairoEgypt Structure and Materials Research Lab Prince Sultan UniversityRiyadhSaudi Arabia Computer Science and Engineering Department Faculty of Electronic EngineeringMenoufia UniversityMenoufiaEgypt

In 2023,pivotal advancements in artificial intelligence(AI)have significantly *** that in mind,traditional methodologies,notably the p-y approach,have struggled to accurately model the complex,nonlinear soil-structure interactions of laterally loaded large-diameter drilled *** study undertakes a rigorous evaluation of machine learning(ML)and deep learning(DL)techniques,offering a comprehensive review of their application in addressing this geotechnical challenge.A thorough review and comparative analysis have been carried out to investigate various AI models such as artificial neural networks(ANNs),relevance vector machines(RVMs),and least squares support vector machines(LSSVMs).It was found that despite ML approaches outperforming classic methods in predicting the lateral behavior of piles,their‘black box'nature and reliance only on a data-driven approach made their results showcase statistical robustness rather than clear geotechnical insights,a fact underscored by the mathematical equations derived from these ***,the research identified a gap in the availability of drilled shaft datasets,limiting the extendibility of current findings to large-diameter *** extensive dataset,compiled from a series of lateral loading tests on free-head drilled shaft with varying properties and geometries,was introduced to bridge this *** paper concluded with a direction for future research,proposes the integration of physics-informed neural networks(PINNs),combining data-driven models with fundamental geotechnical principles to improve both the interpretability and predictive accuracy of AI applications in geotechnical engineering,marking a novel contribution to the field.

关键词： Laterally loaded drilled shaft load transfer and failure mechanisms Physics-informed neural networks(PINNs) P-y curves Artificial intelligence(AI) Dataset

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Coastal seawater turbidity and thermal stress control growth of reef-building Porites spp. corals in Fiji

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Scientific Reports 2025年第1期15卷 1-15页

作者： Samperiz, Ana Sosdian, Sindia Hendy, Erica Johnson, Kenneth John, Eleanor H. Jupiter, Stacy D. Albert, Simon School of Earth and Environmental Sciences Cardiff University Cardiff United Kingdom Department of Earth Ocean and Atmospheric Science Florida State University Tallahassee FL United States School of Earth Sciences University of Bristol Bristol United Kingdom Natural History Museum London United Kingdom School of Agriculture Geography Environment Ocean and Natural Sciences University of South Pacific Suva Fiji Global Marine Program Wildlife Conservation Society Bronx NY United States School of Civil Engineering The University of Queensland St Lucia Australia

Nearshore reefs, at the interface of land-sea interactions, provide essential ecosystem services, but are susceptible to multiple global and local stressors. These stressors can detrimentally impact coral growth and the continuity of the reef framework. Here, we analyse coral growth records (1998 – 2016) of massive Porites spp. colonies from nearshore reefs in Fiji. Our aim is to assess the role of thermal stress and turbidity on coral growth across a range of environments. Our findings reveal a negative linear relationship between linear extension and seawater turbidity across locations (GLM, R² = 0.42, p < 0.001), indicating that average coral growth is significantly influenced by local environmental conditions. On interannual timescales, all locations experienced a 14% to 30% decrease in linear extension in response to acute thermal stress during the 2013 – 2016 period. This finding highlights the existence of compounding effects between water quality and thermal stress. We suggest that inshore, long-lived massive hard corals in areas of high turbidity are more vulnerable to increasing SSTs due to an already reduced mean growth. Integrated management strategies in these regions that considers managing for multiple, interacting local stressors are warranted to enhance resilience. © The Author(s) 2025.

关键词： Coral growth Fiji Nearshore reef Seawater turbidity Thermal stress

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Novel insights into curcumin adsorption: Kinetics and mechanisms of decolorization using Pondoh snake fruit seed biochar

Next Research

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Next Research 2025年第2期2卷

作者： Wilna Iznilillah Mohamad Ali Fulazzaky Arti Hastuti Asep Bayu Dani Nandiyanto Meli Fiandini Khalida Muda Faculty of Halal Food Science Universitas Djuanda Jalan Tol Ciawi No 1 Ciawi Bogor 16720 Indonesia Study Program of Environmental Science Faculty of Engineering and Science Universitas Ibn Khaldun Bogor Jalan Sholeh Iskandar Kedungbadak Bogor 16162 Indonesia Faculty of Mathematics and Natural Science Education Universitas Pendidikan Indonesia Jalan Dr Setiabudhi No 229 Bandung 40154 Indonesia Faculty of Civil Engineering Universiti Teknologi Malaysia 81310 UTM Skudai Johor Bahru Malaysia

Utilizing natural waste materials to decolorize synthetic and natural dyes offers a promising solution for mitigating environmental pollution. The adsorption isotherms and decolorization kinetics of curcumin onto Pondoh snake fruit seed (PSFS) biochar were predicted using ten isotherm models and the Generalized Fulazzaky (GF) equations, respectively, providing insights into the behavioral characteristics of the adsorption process. Simulations using the Harkin-Jura model demonstrated a good fit, with R ² values exceeding 0.6909 across PSFS biochar granular sizes of 13.65, 25.49, and 65.13 μm, indicating capillary condensation and multilayer adsorption, which validates the GF equations’ applicability. Applying the GF equations to adsorption kinetics simulations showed that declining external mass transfer (EMT) rates were offset by increasing internal mass transfer (IMT) rates. The increase in IMT rates ([ k L a ] d < 0.0 min −1 ) was less pronounced than the decrease in EMT rates ([ k L a ] f > 0.0 min −1 ), suggesting IMT governs curcumin adsorption’s rate-limiting step. PSFS biochar with an average granular size of 25.49 μm proved most effective for decolorizing 100 mg L −1 curcumin, exhibiting a global mass transfer rate range of 0.0020 to 0.0079 min −1 . Utilizing PSFS biochar for curcumin removal contributes to sustainable environmental remediation by advancing green technologies and informing dye effluent management strategies.

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programMED TEMPERATURE GAS-CHROMATOGRAPHY OF BORON HYDRIDES

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ANALYTICAL CHEMISTRY 1972年第13期44卷 2237-&页

作者： SOWINSKI, EJ SUFFET, IH Western Electric Company Allentown Pa. 18103 United States Department of Chemistry and Environmental Engineering and Science Program Drexel University Philadelphia Pa. 19104 United States

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Enhancement of Biogas Production from Rice Husk by NaOH and Enzyme Pretreatment 2

Enhancement of Biogas Production from Rice Husk by NaOH and ...

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2nd International Conference on Energy, environmental and Information System, ICENIS 2017

作者： Syafrudin Nugraha, Winardi Dwi Agnesia, Shandy Sarima Matin, Hashfi Hawali Abdul Budiyono Department of Environmental Engineering Faculty of Engineering Diponegoro University Semarang Indonesia Master Program of Environmental Science School of Postgraduate Studies Diponegoro University Semarang Indonesia Department of Chemical Engineering Faculty of Engineering Diponegoro University Semarang Indonesia

Biogas is a renewable energy source that can be used as an alternative fuel to replace fossil fuel such as oil and natural gas. This research aims to analyze the impact of NaOH (Sodium hydroxide) and enzyme usage on the production of rice husk biogas using Solid State Anaerobic Digestion (SS-AD). Generally, SS-AD occurs at solid concentrations higher than 15%. The waste of rice husk are used as substrate with a C/N ratio of 25% and the total of solid that are used is 21%. Rice husk contains high lignin, therefore it is handled with chemical and biological treatment. The chemical preliminary treatment was using NaOH with various concentrations from 3%, 6% and 9% while the biological preliminary treatment was using enzyme with various concentration from 5%, 8%, and 11%. The biogas that is produced then measured every two days during 60 days of research with the biogas volume as a parameter observed. The result of the research shows that preliminary treatment with NaOH and enzyme can increase the production of biogas. The highest biogas production was obtained by the NaOH pretreatment using 6% NaOH which was 497 ml and by enzyme pretreatment using 11% enzyme which was 667,5 ml. © 2018 The Authors, published by EDP sciences.

关键词： Biogas

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Decreasing of BOD Concentration on Artificial Domestic Wastewater Using Anaerob Biofilter Reactor Technology 2

Decreasing of BOD Concentration on Artificial Domestic Waste...

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2nd International Conference on Energy, environmental and Information System, ICENIS 2017

作者： Sumiyati, Sri Purwanto, P. Sudarno, S. Doctoral Program of Environmental Science School of Postgraduate Studies Diponegoro University Semarang Indonesia Department of Chemical Engineering Faculty of Engineering Diponegoro University Semarang Indonesia Department of Environmental Engineering Faculty of Engineering Diponegoro University Semarang Indonesia

Pollution of domestic wastewater becomes an urban problem. Domestic wastewater contains a variety of pollutants. One of the pollutant parameters in domestic wastewater is BOD. Domestic wastewater which BOD concentrations exceeding the quality standard will be harmful to the environment, particularly the receiving water body. Therefore, before being discharged into the environment, domestic wastewater needs to be processed first. One of the processing that has high efficiency, low cost and easy operation is biofilter technology. The purpose of this research was to analyze the efficiency of BOD concentration reduction in domestic wastewater with anaerobic reactor biofilter using volcanic gravel media. The type of reactor used is an anaerobic biofilter made of glass which volume of 30 liters while the biofilter media is volcanic gravel. In this research the established HRT were 24, 12, 6 and 3 hours. The results showed that the efficiency of BOD concentration reduction in artificial domestic wastewater reached 80%. © 2018 The Authors, published by EDP sciences.

关键词： Volcanoes

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Perceptions of rural communities towards sustainable water supply in arid tropical regions Indonesia 3

Perceptions of rural communities towards sustainable water s...

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3rd International Conference on Eco engineering Development, ICEED 2019

作者： Messakh, Jakobis Johanis Fanggidae, Rolland E. Moy, Daniel Lay Study Program of Environmental Science Postgraduate Program Universitas Nusa Cendana Indonesia Study Program of Building Engineering Education Universitas Nusa Cendana Indonesia Study Program of Management Universitas Nusa Cendana Indonesia

Public perception of the fulfillment of clean water needs will depend on a number of factors, including social, economic, cultural and community habits. This research was conducted in Nekmese Village in Kupang Regency, East Nusa Tenggara Province. This village is one of the villages that has not received good clean water services, even though this village has sufficient availability of clean water throughout the season. This study aims to examine the perception of rural communities in the provision of sustainable clean water. Data collection is done by observation and survey by interview and questionnaire. The results showed that 41% of respondents felt they were insufficient in providing clean water, while the other 59% felt they were insufficient. This fact is supported by the data on the use of clean water on average by 40 Lpcd. For the sustainability of clean water supply, the results of the study show positive perceptions from the community, but contrary to wasteful measures in water use, maintenance of water sources and participation in water supply in his village. This could be due to the low level of public education, and lack of hearing about information about clean water. The research recommends increasing the awareness and participation of the community in the provision of sustainable clean water. © 2020 Published under licence by IOP Publishing Ltd.

关键词： Water supply

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