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2nd International Conference on Sciences and Technology Applications, ICOSTA 2020

作者： Putri, Maharani Permata Moersidik, Setyo Sarwanto Environmental Engineering Study Program University of Indonesia Depok16424 Indonesia

One evidence of environmental pollution is the formation of acid mine drainage. In passive processing systems, the technique that is often used is phytoremediation because the costs incurred for this method are affordable and take advantage of natural ecosystems. In this study, the effectiveness of Typha latifoliain neutralizing acidity and removing heavy metal such as cadmium (Cd) is determined. Cadmium is one of the heavy metals that can be found in nickel, gold, and copper mining area. The acid mine drainage used in this study was artificially made with a concentration of 5and 10 mg/L with a pH of *** testing was carried out using a pH meter and the accumulation concentration of Cd was analyzed using Atomic Absorption Spectrophotometer (AAS). The results revealed that Typha latifolia planted on soil without fertilizer could increase the pH of acid mine drainage containing heavy metal Cd from 4 to ± 7 within 28 *** latifolia can reduce the concentration of Cd in artificial acid mine drainage with the removal efficiency of 95 - 96%. The value of the Bioconcentration Factorin Typha latifolia exposed to acid mine drainage with concentrations of Cd 5 and 10 mg/L are > 1000, which means that this plant has the potential to be a heavy metal hyperaccumulator in phytoremediation. © Published under licence by IOP Publishing Ltd.

关键词： Cadmium

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Design strategies and willingness to pay for circular economy service policies in sustainable tourism

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environmental Challenges 2025年 18卷

作者： Suhardono, Sapta Phan, Thi Thanh Thuy Lee, Chun-Hung Suryawan, I Wayan Koko Environmental Sciences Study Program Faculty of Mathematics and Natural Sciences Universitas Sebelas Maret Surakarta 57126 Indonesia Faculty of Natural Resources & Environment Dong Nai Campus Vietnam National University of Forestry Bien Hoa Dong Nai 810000 Viet Nam Department of Natural Resources and Environmental Studies College of Environmental Studies and Oceanography National Dong Hwa University Taiwan Hualien 97401 Taiwan Department of Environmental Engineering Faculty of Infrastructure Planning Universitas Pertamina Jalan Sinabung II Jakarta Terusan Simprug 12220 Indonesia Center for Environmental Solution (CVISION) Universitas Pertamina Jalan Sinabung II Terusan Simprug Jakarta 12220 Indonesia Center for Interdisciplinary Research on Ecology and Sustainability College of Environmental Studies and Oceanography National Dong Hwa University Taiwan Hualien 97401 Taiwan

The transition towards a circular economy within the tourism industry is increasingly seen as essential to achieving sustainable development goals. This study explores the relationships between various design strategies, tourists' willingness to pay (WTP) for sustainable practices, and their participation in circular economy activities. Using Structural Equation Modeling (SEM) to analyze data collected from 640 tourists in Bali, the research identifies the critical factors that influence tourists' engagement with sustainability. The findings reveal that design strategies focused on longevity, serviceability, reusability, and material recovery significantly enhance WTP for sustainable practices. In turn, WTP is shown to be a key driver of participation in circular economy activities, such as purchasing recycled items and green purchasing behaviors. However, barriers such as cost concerns, lack of awareness, and limited incentives pose significant challenges to widespread adoption. © 2025 The Authors

关键词： Circular economy Design strategies Structural equation modeling Sustainable tourism Willingness to pay

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The effect of Aerobic and Anaerobic composting methods against water content and the amount of Pathogenic Microorganisms from Sludge treatment plant and organic waste 1

The effect of Aerobic and Anaerobic composting methods again...

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1st Annual Conference on environmental Science, Society and its Application, ACESSA 2019

作者： Hutagalung, Winny Laura C. Rinaldi Environemntal Engineering Study Program Universitas Jambi Pondok Meja Jambi Indonesia Study Program of Environmental Engineering Faculty of Engineering Universitas Jambi Jambi Indonesia

Jambi City has a Sludge Treatment Plant (IPLT) located in Talang Bakung. IPLT Talang Bakung processes sludge from household septic tanks. The processing consists of 1 anaerobic pond, 3 facultative ponds and 3 maturation ponds. The result of processing at IPLT is water that can be discharged into water bodies and sludge. The sludge still can be used, but it must be processed first. One of the sludge processing is a composting process. The composting process consists of two types, namely the composting process aerobically and anaerobically. This study aimed to compare the results of aerobic and anaerobic composting from IPLT sludge mixed with organic matter. Compost characteristics that are reviewed in this study are physical characteristics, those are water content and biological characteristics, namely pathogenic bacteria. The parameters measured in this study were the temperature, pH and number of Fecal Coliform bacteria at the beginning and end of the study. © 2019 Published under licence by IOP Publishing Ltd.

关键词： Lakes

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Adsorption and desorption of zinc and copper in acid mine drainage onto synthesized zeolite from coal fly ash 2

Adsorption and desorption of zinc and copper in acid mine dr...

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2nd International Conference on Sciences and Technology Applications, ICOSTA 2020

作者： Hidayat, Amalia Ekaputri Moersidik, Setyo Sarwanto Adityosulindro, Sandyanto Environmental Engineering Study Program Civil Engineering Department Universitas Indonesia Depok Indonesia

Synthetic zeolite is considered a more effective adsorbent due to its high purity and high removal efficiency. On the other hand, acid mine drainage contains various metal ions, such as zinc, copper, iron, and manganese which are toxic for the ecosystem in a certain concentration. One of the solutions to remove these metal ions is through adsorption. Therefore, the study of adsorption and desorption of zinc and copper onto synthetic zeolite was conducted. The synthetic zeolite was synthesized from coal fly ash and the acid mine drainage was prepared artificially. The adsorption experiment was carried out using a batch system. NaCl, H2SO4, and HNO3 were used as desorption agent. The adsorption studies revealed that the removal efficiency of both Zn2+ and Cu2+ onto the studied adsorbent decrease with the increase of adsorbate concentration. While the adsorption selectivity for multi-system synthetic AMD solution by the studied adsorbent were found to the order of Fe2+> Cu2+> Zn2+> Mn2+.After being reused three times, the synthetic zeolite shows a decrease in for Zn2+ and Cu2+ adsorption efficiency of about 10%. Furthermore, the desorption study shows the ineffective use of NaCl, H2SO4, and HNO3 as desorption agents in this study. © Published under licence by IOP Publishing Ltd.

关键词： Copper

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Removal of Physical Contaminants from Potable Water Distribution 1

Removal of Physical Contaminants from Potable Water Distribu...

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

作者： Wicaksono, A.P. Zaman, B. Budihardjo, M.A. Master of Environmental Engineering Study Program Diponegoro University Indonesia Department of Environmental Engineering Diponegoro University Indonesia

Water distribution from water treatment plants may still contain some contaminants such as odour, sediments, discolouration, bacteria, viruses, and worms. This effluent is unhygienic and has potential hazards waterborne disease to human health such as skin disease, itching, influenza, typhus, and diarrhea. These diseases are caused by several contaminant parameters, both physical, chemical, and microbiological. Several methods can be used to treat water such as filtration which can reduce the concentration of contaminants carried or formed in potable water distribution so that it can conform the drinking water quality standards. Filtration has many media types such as activated carbon, greensand manganese, ferolite, polypropylene, yarn, and ceramic. The advantage of activated carbon is low cost, high efficiency, and easy to maintain. Effects of water purification show that the filtration from activated carbon combined with polypropylene filtration processes has significant effects and very effective to reduce physical contaminant. It can reduce 60 - 80 % contaminants, depends on the concentration of the contaminant. This article is a review of some results of the research process. © 2020 IOP Publishing Ltd.

关键词： Activated carbon

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The utilization of hydroxylsodalite synthesized from coal fly ash for zinc removal in acid mine drainage 1

The utilization of hydroxylsodalite synthesized from coal fl...

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1st International Conference on Green Energy and Environment 2019, ICOGEE 2019

作者： Hidayat, A.E. Moersidik, S.S. Adityosulindro, S. Environmental Engineering Study Program Civil Engineering Department University of Indonesia Depok Indonesia

One of the alternative solution to reduce ash waste in landfills is by utilizing coal fly ash for the removal of metal ion in wastewater, especially acid mine drainage (AMD). In this study, zeolite was synthesized from coal fly ash using a two-step method, hydrothermal and fusion method. The coal fly ash and the zeolite product were characterized physically and were used for the removal of Zn2+ in AMD. The adsorption experiment was carried out using batch method in synthetic AMD solution to study the influential parameters such as adsorbent dosage, contact time, adsorbent isotherms and kinetics. The zeolite synthesized in this study resulting hydroxylsodalite zeolite type, which increases the surface area. It was revealed from the adsorption experiment that the removal efficiency of Zn2+ was 93.47% under the conditions of pH ± 3, initial concentration Zn2+ 100 ppm, optimum contact time 120 minutes, and adsorbent dose 6 g/L. Furthermore, the Langmuir isotherm model and the kinetics model of pseudo-second-order fitted the adsorption data better, with the maximum sorption capacity of 27.32 mg/g. The result of this study indicate hydroxylsodalite synthesized from coal fly ash has great potential as an economical and sustainable material for the removal of metal ion Zn2+ in wastewater. © Published under licence by IOP Publishing Ltd.

关键词： Metal ions

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Comparison of copper adsorption effectivity in acid mine drainage using natural zeolite and synthesized zeolite 2

Comparison of copper adsorption effectivity in acid mine dra...

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2nd International Conference on Global Issue for Infrastructure, Environment and Socio-Economic Development, IC-GIESED 2019

作者： Wulandari, E. Hidayat, A.E. Moersidik, S.S. Department of Civil Engineering Environmental Engineering Study Program Universitas Indonesia Depok Indonesia

Acid mine drainage (AMD) contains a high concentration of various heavy metals and have low pH levels. In this study, the comparison between the use of natural zeolite and synthesized zeolite for Cu2+ removal in AMD was conducted. The adsorbent of natural zeolite was prepared through a chemical activating method by adding NaOH. While, synthesized zeolite was made from coal fly ash using a two-step method, fusion, and hydrothermal process. The AMD used in this study was artificially designed with the concentration of Cu2+ 100 ppm and pH ± 3. The adsorption experiment was carried out using a batch method to observe the influential parameters such as adsorbent dosage, contact time, adsorbent isotherms, and kinetics. The result show that the removal efficiency of Cu2+ for natural zeolite and synthesized zeolite was 98,16% and 93,98 % with optimum adsorbent dose 1,5 g/l and 21 g/l, respectively. The optimum contact time for both adsorbents was 120 minutes. The Langmuir isotherm model fitted the adsorption for synthesized zeolite and natural zeolite, with the maximum sorption capacity of 23,8 mg/g and 30,03 mg/g, and the kinetics model of pseudo-second-order and pseudo-first-order. The result of this study that the good adsorption effectivity synthesized zeolite. Furthermore, both natural zeolite and synthesized zeolite have great potential as a sustainable and economical material for heavy metal removal ion Cu2+ in wastewater. © Published under licence by IOP Publishing Ltd.

关键词： Adsorption

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The Utilization of Sedimentation Pond Acid Mine Drainage Sludge as Coagulant to Reduce COD and TSS Concentration in Domestic Wastewater 5

The Utilization of Sedimentation Pond Acid Mine Drainage Slu...

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2021 5th International Conference on Energy and environmental Science, ICEES 2021

作者： Daradjat, Nurul Shafira Moersidik, Setyo Sarwanto Environmental Engineering Study Program Civil Engineering Department University of Indonesia Depok Indonesia

Acid mine drainage (AMD) treatment leaves residue in the form of sludge that contains large amounts of metal, silica, ferric, and alum. This research aims to determine the capabilities that AMD sludge-synthesized coagulant has in reducing COD and TSS concentration in domestic wastewater. The domestic wastewater sample used in this research is an artificial domestic wastewater with a COD concentration of 285 mg/l and a TSS concentration of 245.31 mg/l. After going through Acidification process, AMD sludge coagulant contains Si (43.66%), Fe (30.02%), dan Al (12.35%). A jar test is then performed in order to determine the optimal coagulant dosage. In this process, a coagulant dosage of 40 mg/;60 mg/l;80 mg/l;100 mg/l;140 mg/l;180 mg/l;and 200 mg/l was used with 100 mg/l being the optimal coagulant dosage. The AMD sludge containing the optimal coagulant dosage of 100 mg/l is found to be able to reduce COD concentration by 34.74% and TSS concentration by 95.63% from the tested domestic wastewater sample. This research can illustrate the vast potential that the AMD sludge has as a coagulant. © Published under licence by IOP Publishing Ltd.

关键词： Silica

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Comparative Phosphorus Removal Efficiency from Municipal Wastewater Using Acid Mine Drainage Sludge and Its H2O2Activated form As Adsorbents 5

Comparative Phosphorus Removal Efficiency from Municipal Was...

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2021 5th International Conference on Energy and environmental Science, ICEES 2021

作者： Yulianto, Irene Moersidik, Setyo Sarwanto Amanda, Nova Environmental Engineering Study Program Civil Engineering Department University of Indonesia Depok Indonesia

Acid mine drainage (AMD) sludge is by-product from AMD treatment that formed by iron deposition. This sludge has a potential to be used as an active adsorbent to remove phosphate from domestic wastewater. The adsorbent that was used in this research is AMD sludge from PT Bukit Asam Tbk., Tanjung Enim that majorly composed of Si, Fe and Al compound (determined by the XRD test). Phosphate adsorption was done by AMD sludge and MD sludge that was activated by hydrogen peroxide. Activation process by hydrogen peroxide affected the chemical and physic characteristic of sludge and it showed from the results that the concentration of Si, Fe and Al were shifted by 7.33%, 7.03%, and 1.49%, respectively. Meanwhile for the physical characteristic;specific surface area, pore volume, and pore size were shifted by 19.51 m2/g, 0.0635 cm3/g, and 142.694 nm, respectively. Phosphate removal by AMD sludge has a greater result than activated sludge. Adsorption capacity of AMD sludge was well described by Freundlich isotherm model, which is equal to 6.358 mg P/g. Meanwhile, adsorption capacity of activated sludge was well described by Langmuir isotherm model, which is equal to 0.48 mg P/g. Results in this study indicated that the activation process with hydrogen peroxide affects the ability of phosphate adsorption that was showed by the difference of removal percentage. © Published under licence by IOP Publishing Ltd.

关键词： Oxidation

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Characterization of Sludge Generated from Acid Mine Drainage Treatment Plants

Characterization of Sludge Generated from Acid Mine Drainage...

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Universitas Riau International Conference on Science and Environment 2019, URICSE 2019

作者： Amanda, N. Moersidik, S.S. Environmental Engineering Study Program Department of Civil Engineering University of Indonesia Depok16424 Indonesia

One of the wastes generated from coal mining area is the voluminous sludge, laden of metals. This sludge comes as precipitate which is produced from acid mine drainage active treatment ponds and always been disposed to the landfill. Limestone is one of the typical pH neutralization agents which is often used to bind the metal content of acid mine drainage in active treatment and will be settled at the bottom of the settling ponds. The goal of this study is to determine the potential utilization of acid mine drainage sludge in order to reduce the environmental problem caused by sludge accumulation so that this could become a valuable material. In this study, physical and chemical characterization from the sludge in solid form was carried out by laboratory analysis using SEM-EDS to see surface morphology, X-Ray Diffraction for mineralogy analysis, the chemical composition was done by using X-Ray Fluorescence and also BET method to see the surface area of the sample. The results of the characterization have shown that acid mine drainage sludge was very promising to be utilized as adsorbent material for removing pollutant in wastewater and further research is needed for the application to the wastewater technology. © Published under licence by IOP Publishing Ltd.

关键词： Lakes

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