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1st International Conference on Environment, Sustainability Issues and Community Development, INCRID 2019

作者： Ekowati, S.D. Hadi, S.P. Doctoral Program in Environmental Science Post-Graduate Program Diponegoro University Semarang Indonesia Graduate Program of Environmental Science Diponegoro University Semarang Indonesia

The residents of the floating village of Malahing, Bontang, East Kalimantan, earn their living as fish catching fishermen and seaweed farming. Residents even experience a clean water crisis, every month they require a budget IDR 300, 000 until IDR 400, 000 to buy clean water at Tanjung Laut by ketinting. The PKT programmed rain harvesting for Malahing residents to supply clean water. The method used was field observations and surveys as well as simple calculations using the program of Office Excel. The PKT carried out gutter procurement for every resident's house, provided three plastic drums of 200 litres to collect rainwater, provided filters to filter rain water, train the residents to care for and repair the filters. As a result, the residents get clean water to meet their daily basic, grow vegetables for family needs and do greening in their yard and water them. They can also water communal latrines so that defecation is not carried out at sea. Malahing residents can save IDR. 356, 000 until IDR 456.000 per month, help save fossil fuels and reduce carbon dioxide emissions so they become healthier, prosperous and environmentally friendly. © 2020 IOP Publishing Ltd.

关键词： Rain

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Magnetically separable silica-chitosan hybrids for efficient phosphate adsorption in aqueous solution

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Case Studies in Chemical and environmental Engineering 2025年 11卷

作者： Nuryono, Nuryono Sukamto, Sukamto Kunarti, Eko Sri Krisbiantoro, Philip Anggo Wan Abdullah, Wan Nazwanie Kamiya, Yuichi Department of Chemistry Faculty of Mathematics and Natural Sciences Universitas Gadjah Mada Bulaksumur Yogyakarta 55281 Indonesia of Life Science Hokkaido University Kita 10 Nishi 8 Kita-ku Sapporo 060-0810 Japan International Graduate Program of Molecular Science and Technology National Taiwan University No. 1 Sec. 4 Roosevelt Road Taipei 10617 Taiwan Molecular Science and Technology Program Taiwan International Graduate Program Academia Sinica Taipei 11529 Taiwan Department of Chemical Engineering College of Engineering National Taiwan University Taipei 10617 Taiwan School of Chemical Science Universiti Sains Malaysia Gelugor Penang 11800 Malaysia Faculty of Environmental Earth Science Hokkaido University Nishi 5 Kita 10 Kita-ku Sapporo 060-0810 Japan

In the present study, magnetic silica-chitosan hybrid (NMP@SiO2/CPTMS/Chi) was synthesized via a convenient and green sol-gel technique under room temperature, and the material was used as a highly efficient magnetic ... 详细信息

In the present study, magnetic silica-chitosan hybrid (NMP@SiO₂/CPTMS/Chi) was synthesized via a convenient and green sol-gel technique under room temperature, and the material was used as a highly efficient magnetic adsorbent for the removal of phosphate ions in water. While the magnetic properties of NMP from iron enable the material to be quickly separated via magnetic separation, the abundant active sites from the chitosan made the hybrid exhibit high adsorption capacity for phosphate ions. At pH 6, the removal of phosphate ions followed the pseudo-second-order (PSO) kinetic model with the adsorption rate constant (k₂) of 5.9 × 10^-3 mg g⁻¹ min⁻¹ and obeyed the Langmuir isotherm model with a maximum adsorption capacity (q_max) of 15.06 mg g⁻¹, outperforming most of the previously reported adsorbents. Stability tests and derivative thermogravimetry (DTG) analysis demonstrated that NMP@SiO₂/CPTMS/Chi remained stable even under strongly acidic conditions and possessed high thermal stability, respectively. The synergistic combination of high adsorption capacity, acid stability, thermal stability, and facile magnetic separation renders NMP@SiO₂/CPTMS/Chi a promising adsorbent for wastewater treatment and environmental remediation. Overall, this innovative material represents a significant advancement in phosphate removal, offering a sustainable and effective solution to address the global challenge of water pollution and protect aquatic ecosystems. © 2025 The Authors

关键词： Adsorption Chitosan Magnetic material Phosphate Silica Sol-gel

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Extraction of bioactive compounds from different yerba mate genotypes and development of an antimicrobial gel

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Fitoterapia 2025年 183卷 106582页

作者： Mendonça, Gustavo Zambon Isidoro Haminiuk, Charles Windson Pedro, Alessandra Cristina Martins, Lucia Regina Rocha Molin, Fernando Larsen, Gabriel Oales Kaminski Helm, Cristiane Vieira Wendling, Ivar Maciel, Giselle Maria Graduate Program in Environmental Science and Technology (PPGCTA) Federal University of Technology - Paraná (UTFPR) Paraná Curitiba 81280-340 Brazil Biotechnology Laboratory Academic Department of Chemistry and Biology Federal University of Technology - Paraná (UTFPR) Paraná Curitiba 81280-340 Brazil Organic Chemistry Laboratory Academic Department of Chemistry and Biology Federal University of Technology - Paraná (UTFPR) Paraná Curitiba 81280-340 Brazil Embrapa Florestas Paraná Colombo Brazil

Yerba mate (Ilex paraguariensis) is an essential source of bioactive compounds, such as polyphenols and methylxanthines, which provide health benefits and present potential antimicrobial properties. Nevertheless, the yerba mate genotypes and conditions to obtain plant extracts may influence the results of their biological potential. This paper describes the production of hydroethanolic extracts from two different genotypes of yerba mate (BRS and EC38) using a statistical experimental design. The total phenolic compounds (TPC), total flavones and flavonols (TFF), antioxidant activity, and antimicrobial potential were determined for each extract. Besides, some extracts were selected for chromatographic evaluation (LC-DAD and LC-QTOF-MS) and the development of an antimicrobial gel. The highest concentration of TPC was observed in BRS genotype (112 mg GAE/g DW) and the highest value of TFF was detected in EC38 genotype (19.45 QE/g DW). The highest values of antioxidant activities were 598.9 μmol TE/g DW for BRS and 753.7 μmol TE/g DW for EC38. A total of 16 phenolic compounds and flavonols were identified in yerba mate extracts by LC-QTOF-MS, and the EC38 genotype presented the highest number of compounds. The extracts from the BRS genotype had higher concentration of theobromine and caffeine, compared to the EC38 genotype. The yerba mate extracts could inhibit Escherichia coli, Staphylococcus aureus and Candida albicans, though at different levels. The yerba mate gels demonstrated equal and/or superior inhibitory capacity against E. coli and S. aureus compared to hand sanitizing gel produced only with ethanol (40 % and 70 %). © 2025 Elsevier B.V.

关键词： Antimicrobial activity Bioactive compounds Ilex paraguariensis LC-MS/MS Natural products

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Water quality assessment and control efforts use the pollution index method in the Sikendil river 5

Water quality assessment and control efforts use the polluti...

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5th International Conference on Energy, environmental and Information System, ICENIS 2020

作者： Lenty Hoya, Ade Nany, Yuliastuti Utomo, Sudarno Ramadhani Maharlika, Andrea Program of Environmental Science School of Post-Graduate Diponegoro University Semarang Indonesia

Water is one of the primary needs of living things. Everyday human life needs water from drinking water consumption, water recreation, animal husbandry, and agriculture. It is important to monitor water quality in water bodies so that they can be used properly. The goal is to find out water quality in Sikendil River, Klepu Village, Pringapus District, Semarang Regency, and Pollution control efforts undertaken by stakeholders. Water quality will be assessed using the Pollution Index Method, pollutant Physical, Chemical, and Biological parameter test results compared with quality standards in government regulations No. 82 of 2001. Samples were taken at the ordinate point S: 070 10 '52.7;E: 1100 26' 52.2;. Secondary data from the Semarang Regency DLH lab test results in 2019. The result is that the parameters exceed the quality standards of nitrate, nitrite, free chlorine, and COD. Water quality was in the Polluted category for the water class I, II, and III designations at 9.50, 9.41, and 9, 35. The status of Medium Pollution in water class IV is 1.66. Consistency, supervision, counseling, and periodic reporting are needed between stakeholders © The Authors, published by EDP sciences, 2020.

关键词： Water quality

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Effect of amino acids intake of rubber seeds processing as alternative comestible length for infants born against 1

Effect of amino acids intake of rubber seeds processing as a...

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1st International Conference on environmental sciences, ICES 2018

作者： Dewi Puspita Sari, Ratna Environmental Science Post Graduate Program Lampung University Bandar Lampung Indonesia

Sumatra and Kalimantan are the region with the area and the highest rubber production in Indonesia, including Lampung province that is also abundant production of rubber seed every year. Rubber seed contains a protein that is high enough. With the high crude protein, it can be used to make rubber seed chips and snacks potential to be used as a source of protein for pregnant ibi amino acids to help meet the mother during pregnancy. Sufficient amino acid intake during pregnancy associated with a body length of birth. This research was observational analytic with cross sectional design. Sampling method used in this study is consecutive sampling. The study was conducted in East Lampung in 2016. The subjects were all pregnant women including rubber farmers in East Lampung region and met the inclusion criteria of the study. The samples obtained were 124 pregnant women and their babies. Data were analysed descriptively. The results obtained indicate that rubber seed chips can help meet amino acid intake during pregnancy and affects the baby's body length at birth. From the sample of the research note that 89.5% of the infants had a body length of> 48 cm (normal) and 10.5% of infants had a body length of 48 cm (normal) and 10.5% of infants had a body length of 48 cm (normal) and 10.5% of infants had a body length of © 2019 Published under licence by IOP Publishing Ltd.

关键词： Amino acids

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Development of ceramic membranes from sugarcane bagasse ash for microfiltration of biodiesel production effluents

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Open Ceramics 2025年 22卷

作者： Pin, Clarissa Ferreira Brandler, Danieli Flores, Gabriela Cristina Perusin Kubiaki Levandoski, William Mateus Bruschi, Giovani Jordi Pelissaro, Deise Trevizan Dervanoski, Adriana Korf, Eduardo Pavan Pasquali, Gean Delise Leal Graduate Program in Enviromental Science and Technology Federal University of Fronteira Sul Erechim/RS 99700-970 Brazil Departament of Civil Engineering Integrated Regional University of Alto Uruguai and Missões – Erechim/RS 99709-910 Brazil Departament of Environmental and Sanitary Engineering Federal University of Fronteira Sul Erechim/RS 99700-970 Brazil

Ceramic membranes have emerged as a promising solution for microfiltration processes, offering advantages such as cost-effectiveness, environmental benefits, and the utilization of abundant raw materials derived from agro-industrial solid waste. This study investigates the fabrication and performance of ceramic membranes composed of kaolin the varying proportions of sugarcane bagasse ash (SCBA - 40 wt % and 60 wt %), with focus on efficiency in treating biodiesel wastewater. The membranes were characterized (porosity, average pore diameter, and mechanical strength). The membrane containing 40 wt % SCBA - employed without any pre-treatment- exhibited the best overall performance, achieving porosity of 38.5 %, an pore diameter of 0.9 µm, and mechanical strength of 27 MPa, indicating a favorable balance between permeability and structural integrity. The best-performing membrane achieved removal efficiencies of color 83 % and turbidity 67 %. Microstructural analysis revealed a network of interconnected mesopores, which are particularly effective for the retention of colloidal and suspended contaminants. © 2025 The Authors

关键词： Agro-industrial solid waste Industrial effluent Membrane filtration

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Monitoring of water quality in Ciujung river using remote sensing and GIS 5

Monitoring of water quality in Ciujung river using remote se...

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5th International Conference on Energy, environmental and Information System, ICENIS 2020

作者： Afidah, Shofiyatul Anggoro, Sutrisno Sudarno Magister Program of Environmental Science School of Post-Graduate Diponegoro University Semarang Indonesia

Ciujung River is one of the important rivers in Banten Province and it is the main water supply for agriculture, industry and bathing. Due to extensive agricultural, urban, and industrial activities in the watershed of this ecosystem, some studies have assumed that the river is contaminated. But, there is no research related Ciujung River water quality with biological indicator and maping pollutant sources. The aim of this study is analyze: water quality of Ciujung River and influence of activities in Ciujung watershed to the water pollution in Ciujung River. Calculation Pollution Index (PI) and calculation chlorophyll-A abundance are adopted for water quality assessments. Water quality were analysed based on secondary data from BBWS C3 in January-May 2020. Chlorophyll-A abundance measured by Sentinel-2 imagery, water quality assessments result of each section presented in spasial data with GIS. Water quality map overlayed with land use map to indentify the influence of activities in Ciujung watershed to water pollution in Ciujung River. PI calculation results show that Ciujung River is moderately polluted, PI calculation result of each section is >5. Meanwhile, the abundance of chlorophyll-A can describe level of pollution in Ciujung River from biological parameters, the highest chlorophyll-A abundance is in Pamarayan (38,6) and the lowest chlorophyll-A abundance is in Jembatan Keong (18,6). © The Authors, published by EDP sciences, 2020.

关键词： Rivers

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Implementation of regional regulation of Lampung Province number 22 of 2014 on reproductive health of the community along River Basin Way Sekampung Lampung 1

Implementation of regional regulation of Lampung Province nu...

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1st Sriwijaya International Conference on Medical sciences, SICMS 2018

作者： Sari, Ratna Dewi Puspita Post Graduate Program Doctor of Environmental Science Universitas Lampung Bandar Lampung Indonesia

Integrated watershed management has been regulated in the Regional Regulation Number 22 of 2014 Lampung Province. Watershed is a land area that is a unity of ecosystem with river and its tributaries that function to accommodate, store and drain water coming from rainfall to lake or sea naturally. The Lampung Province watershed is a watershed across several districts / cities in Lampung Province covering Sekampung watershed, Tulang Bawang basin, Seputih watershed, watershed watershed, Abar Kambas watershed and Mesuji basin. The largest part of the upstream of this river is located in West Lampung District, part of North Lampung, and part Tanggamus. The existence of integrated watershed management aims to improve and prevent damage to the watershed and realize the welfare of the community. Lampung Watershed Forum ensures that the watershed condition in Lampung has been severely damaged by the destruction of forests and dryland farming without soil conservation impacting on the declining water quality so that it will be dangerous if consumed by the people around the watershed. This condition leads to various diseases related to reproduction. This reproductive disease can affect children as well as adults. This study aims to determine the impact of the implementation of regulation number 22 of 2014 relating to reproductive health of people along the Lampung River Basin. The research method is descriptive observational research. The results obtained show that the implementation of Regulation No. 22 of 2014 has not touched the reproductive health of the community. Nevertheless, the number of reproductive diseases in the community along the Way Sekampung catchment in 2016 is smaller than in 2012. Needed assessment and impact handling for community welfare to materialize. The results of this study are expected to be a contribution of thought in the integrated watershed management of Lampung Province. © 2019 Published under licence by IOP Publishing Ltd.

关键词： Watersheds

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The Impact of Pupuk Kaltim's Creating Shared Value (CSV) program for Fishermen on Tanjung Limau Bontang 4

The Impact of Pupuk Kaltim's Creating Shared Value (CSV) pro...

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

作者： Ekowati, Sri Djuwani Hadi, Sudharto P. Doctoral Program in Environmental Sciences Post-Graduate School Diponegoro University Semarang Indonesia Graduate Program of Environmental Science Diponegoro University Semarang Indonesia

70% of Bontang area is ocean. There are two large factories in Bontang, they are PT. Pupuk Kaltim (PKT) in Bontang Utara District and PT. Badak NGL in South Bontang District. Pupuk Kaltim's CSR implementation, since the operation of the factory from 1979 to 2015, is still charitable. Thus, the implementation of CSR does not have much impact on both the community and the company. Local people often protest the company by using environmental issues, namely the large number of dead fish caused by environmental pollution from PKT factory's liquid waste. They sometimes close the ship's entry and exit lanes from the PKT's factory port. In 2016, PKT implemented the Creating Shared Value (CSV) program at Tanjung Limau. This program is a program for sharing the results of PKT CSR with local fishermen through lobster and grouper cultivation on Floating Net Cage (FNC). The aim is to identify the economic, social and natural impacts on Tanjung Limau fishermen groups who are members of the PKT CSV program. Data was collected from BMTFEC diaries from 2016 to 2018 through Focus Group Discussions (FGD), interviews, and questionnaires. The results show that the income of members of the fishing group ranges from IDR 2,000,000 per month, is more environmentally friendly, members of the fishing group increase, and they get access to new markets. © The Authors, published by EDP sciences, 2019.

关键词： Fisheries

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Analysis of synthetic natural gas injection into charcoal blast furnace

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Journal of Materials Research and technology 2013年第3期2卷 255-262页

作者： Rocha, Elisa Pinto Da Guilherme, Vagner Silva De Castro, José Adilson Sazaki, Yasushi Yagi, Jun-Ichiro Post-Graduation Program in Metallurgical Engineering Universidade Federal Fluminense Volta Redonda RJ Brazil Environmental Metallurgy Laboratory Graduate Institute of Ferrous Technology Pohang University of Science and Technology Pohang Korea Republic of Tohoku University Sendai Japan

Recently, the synthetic natural gas (SNG) has been available for large consumers in the Brazilian domestic market. The SNG is a suitable fuel with potential use to several processes and facilities of the steel industry. This paper investigates the injection of SNG into charcoal blast furnaces as a substitute for granular charcoal charged from the top and pulverized charcoal injections with potential increase of productivity and decrease of specific CO2 emissions. In order to study the effect of replacement of granular charcoal and injection of pulverized charcoal the well known Blast Furnace Five Fluid Model (BF-FFM) is applied to describe detailed phenomena within the process. This model treats the blast furnace as a five-phase reactor, accounting for gas, lump solids (raw iron ore, sinter, pellets and granular charcoal), hot metal, pulverized charcoal, and molten slag. The model is based on conservation equations for mass, momentum, energy and chemical species numerically solved based on the finite volume method (FVM). The SNG has high amount of H2 and strongly affects the inner conditions of the reactor and only a comprehensive model with detailed chemical reaction rates can properly predict the inner parameters of the process and hence furnish useful information to design smooth operational conditions. The simulation results obtained in this study indicated that smooth operations using SNG up to 25 N m3/t of pig iron could be achieved simultaneously by increasing the productivity up to 58% and with a decrease of 40 kg/thm on the granular charcoal charged. © 2013 Brazilian Metallurgical, Materials and Mining Association.

关键词： Steelmaking

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