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

作者： Gunawan, Teuku Johar Ikhwan, Yusni Restuhadi, Fajar Pato, Usman Post Graduate Program of Environmental Science Universitas Riau Pekanbaru Riau Indonesia Faculty of Agriculture Universitas Riau Pekanbaru Riau Indonesia

Microalgae have been viewed as one of potential solution for CO2 biofixation or CO2 sequestration. However, many factors need to be evaluated to support development of CO2 biofixation. One important environmental factor for the growth of micro algae is related with light requirement. The aim of this study was to evaluate the effect of light intensity and photoperiod on growth of Chlorellapyrenoidosa (***) and CO2 biofixation. Experiments were carried out in 1000 mL semi batch photo bioreactors, purged continuously with air (0.034% CO2). An Experiment of Factorial Design was employed in which the light intensity was evaluated 4 level at 2000, 4000, 6000 and 8000 lux with 3 level of photo period at L/D (light/dark) 8 hours/16 hours;L/D 12 hours/12 hours and L/D 16 hours/8 hours. The result indicated that both light intensity and photo period had significant effect (p2biofixation rate of around 2 times was also observed between highest setting (8000 lux;L/D 16/12 hours) relative to that of lowest setting (2000 lux;L/D 8/12 hours). © 2018 The Authors, published by EDP sciences.

关键词： Carbon dioxide

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Application of construction and demolition waste (gypsum and mortar) for the removal of metal ions, Pb 2+ , Cu 2+ , and Ni 2+

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Cleaner Chemical Engineering 2025年 11卷

作者： Jefferson Luiz Alves Marinho Francisco Assis Bezerra da Cunha Raimundo Nonato Pereira Teixeira Henrique Douglas Melo Coutinho Jorge Marcell Coelho Menezes Francisco José de Paula Filho Lucia Raquel de Lima Cícera Datiane de Morais Oliveira Tintino Hyan Thompson Oliveira Lopes Paulo Ives Pereira de Alcântara Post-Graduate Program in Biological Chemistry - PPQB at the Regional University of Cariri - URCA Crato Ceará Brazil Science and Technology Center at the Federal University of Cariri - UFCA Juazeiro do Norte Ceará Brazil Pharmacotoxicological Prospection of Bioactive Products Laboratory - UFPE Recife Pernambuco Brazil Analytical and Environmental Chemistry Laboratory - URCA Crato Ceará Brazil

The intensification of human activities, consumption, production, and exploitation of raw materials, coupled with rapid population growth and industrial activity development, has led to significant environmental impacts. As civilization progresses, the level of environmental pollution with toxic metals has also intensified. The ability to quickly detect heavy metal pollution in wastewater and find its source is critical for environmental monitoring and protection. In the search for cheaper and more economical materials to be used as precipitants, civil construction waste has been used for this application. In this context, the present study aimed to evaluate the utilization of construction and demolition waste (gypsum and cementitious mortar) in the retention of Copper, Lead, and Nickel metal ions. The assessment of the removal capacity of these metal ions using gypsum powder and cementitious mortar was conducted through chemical precipitation using batch experiments. The results obtained for Pb 2+ ions showed that increasing the mass of gypsum from 10 to 100 g resulted in precipitation rates ranging from 97.29 to 98.31 %. Gypsum also proved to be a viable alternative for Cu 2+ precipitation with rates of 92.99 to 96.65 %, while the most significant retention rate for Ni 2+ was observed for the mass of 100 g, reaching 94.63 %. In experiments using different types of cementitious mortar (ACI, ACII, ACIII, and common) as precipitants in a solution contaminated with copper at a constant concentration of 600 mg/L, it was found that the precipitation rates were practically the same, with ACIII mortar showing the highest percentage of precipitation. Therefore, the results obtained demonstrated that construction and demolition waste by-products rich in gypsum and cementitious mortar are efficient in removing toxic metals, representing promising alternatives for wastewater decontamination.

关键词： Toxic metals Chemical precipitation Construction and demolition waste Metal removal Geomaterials

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Implications of technological improvement and circular agriculture on environmental sustainability of sugarcane production

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Cleaner environmental Systems 2025年 18卷

作者： Aakriti Deuja Min Hein Khant Thapat Silalertruksa Shabbir H. Gheewala Trakarn Prapaspongsa Graduate Program in Environmental and Water Resources Engineering Department of Civil and Environmental Engineering Faculty of Engineering Mahidol University Nakhon Pathom Thailand Department of Environmental Engineering Faculty of Engineering King Mongkut's University of Technology Thonburi Bangkok Thailand The Joint Graduate School of Energy and Environment King Mongkut's University of Technology Thonburi Bangkok Thailand Centre of Excellence on Energy Technology and Environment Ministry of Higher Education Science Research and Innovation Bangkok Thailand

The spatially differentiated environmental impacts and associated costs of technological improvement and circular agricultural practices in sugarcane production were assessed. Analysis of the cause-effect relationship between the key processes and substances each helped develop alternative scenarios for impact reduction. PM 2.5 emissions contributed to 92 % of the total human health impacts from open burning of field residues. Freshwater ecotoxicity, mainly due to ametryn emissions from pesticide application, contributed to 47 % of the total damage to the ecosystem. The environmental costs were 116 % higher than the value of sugarcane production, signifying the critical importance of adopting alternative pathways that provide economic benefits from environmental cost reduction compared to the production value. Scenarios considering green cane harvesting and waste management approaches demonstrated high potential for total impact reduction of 99 % and 97 %, respectively, and economic gains of 202 and 225 billion THB, respectively (5.76 and 6.42 billion USD, respectively). The economic benefits of waste utilization were 137 % higher than the value of sugarcane production, demonstrating the potential benefits of product substitution to help mitigate impacts. The core findings highlight the significance of the PM 2.5 impact-related external costs and underscore the benefits of adopting green cane harvesting in conjunction with on-field waste utilization to mitigate the impact of open burning and produce value-added products. Technological improvement and circular agricultural practices coupled with valuation of spatially differentiated impacts can provide useful and more accurate information to policymakers, to prioritize the implementation of mitigation strategies for enhancing the environmental sustainability of sugarcane production.

关键词： Life cycle assessment On-site and supply chain emissions Human health Ecosystem environmental cost environmental sustainability

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The technological potential of agro-industrial residue from grape pulping(Vitis spp.)for application in meat products:A review

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Food Bioscience 2022年第5期49卷 40-49页

作者： Marcelo Edvan dos Santos Silva Cristiani Viegas Brandao Grisi Suzana Pedroza da Silva Marta Suely Madruga Fabio Anderson Pereira da Silva Post-Graduate Program in Food Science and Technology Department of Food EngineeringTechnology CentreFederal University of ParaibaJoao PessoaParaiba58051-900Brazil Post-Graduate Program in Agrifood Technology Federal University of ParaibaCampus Universitario IIIBananeirasPBBrazil Federal University of Pernambuco’s Agreste Av.Bom PastorBoa Vista55296-901GaranhunsPEBrazil

This review aimed to investigate the technological potential of grape pomace for application in the meat industry,approaching the compounds of interest and presenting the challenges of its application in meat *** pomace contains bioactive and nutritional compounds with beneficial properties for maintaining the physical-chemical,sensory,and nutritional quality of meat and its *** studies have reported the presence of fiber,amino acids,essential fatty acids and minerals capable of increasing the nutritional value of meat products and promoting a nutrient supply when associated with animal ***,the bioactive composition of grape pomace has anthocyanins,flavanols and phenolic acids capable of increasing the shelf life of meat products,inhibiting microbial development,and delaying the oxidative processes responsible for the deterioration of sensory and nutritional *** use of nano and microencapsulation technologies and the use of active packaging as carriers of grape pomace extracts enhance their application in meat and meat *** technologies,applied individually or together,promote the controlled release of bioactive compounds during the storage and mask undesirable flavors promoted by phenolic *** addition to the technological potential,the use of grape pomace by the meat industry meets the current demand for the use of natural additives and is in accordance with the sustainable development objectives established by the United Nations Organization,reducing environmental impacts and allowing the obtaining molecules with high added value from industrial waste.

关键词： Natural antioxidant Grape bagasse Meat products Bioactive compounds Oxidation Waste reuse

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Deep Neural Network Based Inductance Calculations of Wireless Power Transfer Systems 11

Deep Neural Network Based Inductance Calculations of Wireles...

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11th IEEE Global Conference on Consumer Electronics, GCCE 2022

作者： Sato, Kai Kanamoto, Toshiki Kudo, Ryotaro Hachiya, Koutaro Kurokawa, Atsushi Hirosaki University Graduate School of Science and Technology Aomori Japan Teikyo Heisei University Graduate Program in Environmental Information Science Tokyo Japan

ISBN: (纸本)9781665492324

This paper proposes a new method for obtaining self and mutual inductances in wireless power transfer (WPT) systems using a deep neural network (DNN). In this paper, five structural parameters of a WPT system were experimentally used as inputs. The experimental results demonstrate that inductances obtained by the proposed method are within 10% in the maximum errors and about 1% in the mean absolute errors. The proposed method is about 682k times faster than the field solver in the CPU time required to obtain the inductances of one structure. © 2022 IEEE.

关键词： Deep neural networks

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A Parabolic Spiral Coil Transmitter for Charging Multiple Receivers 11

A Parabolic Spiral Coil Transmitter for Charging Multiple Re...

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11th IEEE Global Conference on Consumer Electronics, GCCE 2022

作者： Kudo, Ryotaro Hachiya, Koutaro Kanamoto, Toshiki Kurokawa, Atsushi Hirosaki University Graduate School of Science and Technology Aomori Japan Teikyo Heisei University Graduate Program in Environmental Information Science Tokyo Japan

ISBN: (纸本)9781665492324

Magnetic coupled wireless power transfer systems have been incorporated in various devices including smartphones, and are becoming important to charge multiple devices at the same time. In this paper, we propose a new circular transmitter that can efficiently charge multiple receivers. The transmitter coil consists of a parabolic spiral that is sparse on the inside and tight on the outside from the beginning. The analysis result shows that when the five receivers are charged, they can be charged almost evenly and the total efficiency is 79.2%. © 2022 IEEE.

关键词： Energy transfer

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The Implementation of Credit program to Delay Cutting down Trees 4

The Implementation of Credit Program to Delay Cutting down T...

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

作者： Ningrum Ika, Satryani Kartika Muhamad, Fuad Master Program of Environmental Science Post Graduate Studies Diponegoro University Semarang Indonesia Departement of Biology Faculty of Science Mathemathics Diponegoro University Semarang Indonesia

Farmers have difficulty in developing community forest and their derivative products because they are constrained by funds. So, The Ministry of Environment and Forestry issued a credit program to delay cutting down trees. Loans use trees as collateral for credit. The experimental site is in Kawengen Village Ungaran East Ungaran, Semarang Regency Central Java Province (7° 1021 N 110° 4814 W) at 216 m above sea level. Data is obtained from Lestari farmer grup. Lestari farmer group is a farmer organization that participates in the delayed cutting down trees credit *** purpose of the study was to find out the implications of implementing credit program to delay cutting down trees for sustainable community forest management. The study indicated that delayed cutting loan is beneficial for farmers and forest suistainability. The result is the delay in cutting trees useful for providing longer opportunities of tree life, thus trees can be functioned ecologically and economically longer. On the other hand, if it fails to pay, there will be fragmentation of community forest land. The ecological and economic functions of trees will also be lost. © The Authors, published by EDP sciences, 2019.

关键词： Forestry

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Using factor analysis and regression analysis to develop mathematic modeling to support online application implementation in transportation business 3

Using factor analysis and regression analysis to develop mat...

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3rd International Conference on Combinatorics, Graph Theory, and Network Topology, ICCGANT 2019

作者： Sardjono, W. Selviyanti, E. Perdana, W.G. Information Systems Management Department Bina Nusantara University Jakarta Indonesia Health Department PoliteknikNegeriJember Jember Jawa Timur Indonesia Post Graduate Program of Environmental Science School of Environmental Science Indonesia

Factor analysis is used to reduce data or summarize, from the old variable which is widely changed to a few new variables called factors, and still contains most of the information contained in the original variable. While regression analysis studies the relationship between one or more variables/independent variables (X) with one dependent variable (Y).The purpose of this paper is to describe how the factor analysis method can be used to provide solutions to operational problems such as problems with public transportation services with online applications, for this reason the research was conducted in identifying what factors influence the quality of online applications, and henceforth can be used in building mathematical models that can explain practical applications and predictions in the future. This research is explained in a quantitative descriptive form using exploratory factor analysis and regression analysis methods to process primary data and build models. The conclusion of this study is that there are 22 indicators and three factors that determine the quality of the application. The three factors produced are system and information factors, user impact factors, and promotion factors. These three factors can henceforth become a model in determining customer satisfaction as an end user of public transportation with an online application. © Published under licence by IOP Publishing Ltd.

关键词： Factor analysis

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Biogas Production from Rice Husk Waste by using Solid State Anaerobic Digestion (SSAD) Method 2

Biogas Production from Rice Husk Waste by using Solid State ...

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

作者： Matin, Hashfi Hawali Abdul Hadiyanto Master Program of Environmental Science School of Post Graduate Studies Diponegoro University Indonesia Chemical Engineering Department Engineering Faculty Diponegoro University Indonesia

An effort to obtain alternative energy is still interesting subject to be studied, especially production of biogas from agriculture waste. This paper was an overview of the latest development of biogas researches from rice husk waste by Solid State Anaerobic Digestion (SSAD). The main obstacle of biogas production from rice husk waste was the lignin content which is very difficult degraded by microbes. Various pretreatments have been conducted, either physically, chemically as well as biologically. The SSAD method was an attractive option because of the low water content of rice husk waste. The biogas yield by SSAD method gave more attractive result compared to Liquid Anaerobic Digestion (LAD) method. Various studies were still conducted in batch mode laboratory scale and also has not found optimum operating conditions. Research on a larger scale such as bench and pilot scale with continuous systems will be an increase trend in the future research. © 2018 The Authors, published by EDP sciences.

关键词： Biogas

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Evaluation model of knowledge management systems implementation using factor analysis and regresion analysis at the corporation 3

Evaluation model of knowledge management systems implementat...

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3rd International Conference on Combinatorics, Graph Theory, and Network Topology, ICCGANT 2019

作者： Sardjono, W. Selviyanti, E. Perdana, W.G. Information Systems Management Department Bina Nusantara University Jakarta Indonesia Health Department Politeknik Negeri Jember Jawa Timur Indonesia Post Graduate Program of Environmental Science School of Environmental Science Indonesia

The ability to manage knowledge is becoming increasingly important in today's knowledge economy, especially for companies. In order to obtain the effectiveness of the process of sharing knowledge within the company, it is necessary to evaluate the implementation of the knowledge management system that is currently running. The purpose of knowledge management is to change the paradigm of existing knowledge in employees into knowledge that can explicitly become corporate or organizational knowledge, so that the company can be used to improve employee performance because there are sufficiently managed references or knowledge or experience or expertise that has been collected and disseminated by previous *** data obtained were then analyzed using the factor analysis method, and the results that five factors can affect employee performance through knowledge management systems implementation, these are the factors: human resources ability, effective information, knowledge management systems, Quality for Users, accurate information transfer, and adequate IT Infrastructure. Furthermore, from these five factors by using linear regression analysis a mathematical model can be built which can be simulated to illustrate the results of the evaluation. © Published under licence by IOP Publishing Ltd.

关键词： Knowledge management

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