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Optimization and Mechanism Elucidation of Catalytic Photodegradation Methylene Blue by TiO2/Zeolite Coal Fly Ash Nanocomposite Under H2O2 Presence Kusumawardani, Linda Jati; Widdyanti, Tutik; Iryani, Ani; Hasanah, Uswatun; Nurlela, Nurlela
Sains Natural: Journal of Biology and Chemistry Vol. 14 No. 2 (2024): Sains Natural
Publisher : Universitas Nusa Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31938/jsn.v14i2.722

The synthetic dye methylene blue is utilized in many industries. However, it harms the aquatic ecosystem. Methylene blue causes wastewater to become colored. If this colored waste is released into the environment, clean, colorless water will become colored. This work uses a zeolite coal fly ash/TiO2 nanocomposite to enhance the process and identify the photodegradation mechanism of Methylene Blue (MB). Our group has successfully synthesized this nanocomposite using a developed method, improving the materials' capacity for both photodegradation and adsorption. This study has proved nanocomposite performance to degrade methylene blue as a synthetic dye by optimizing the effects of H2O2 addition, catalyst dosage, pH, initial concentration of methylene blue, and irradiation period. The maximum photodegradation in this investigation was observed at a pH of 12 with a nanocomposite dose of 3 g/l and an addition of 8 ml/l of H2O2, and in this study, degradation efficiency reached 100% for an 18 mg/l MB concentration in a short period of 75 minutes. With a reaction rate constant of 0.0601 min-1, the reaction kinetics were described by a pseudo-first-order reaction kinetics model. UPLC-MS/MS QToF analysis revealed the result of chemicals produced by photocatalytic degradation of methylene blue fragmentation into simpler molecules.

The Quality of Bio-pellets Made by Combining Walnut Kernel Shells (Canarium Indicum L.) from Bogor, Indonesia, and Palm Kernel Shells as Renewable Energy Iryani, Ani; Kusumawardani, Linda Jati; Juniansyah, Ronaldo
Makara Journal of Science Vol. 29, No. 3
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar

Using biomass as an energy source helps overcome the declining supply of fossil fuels. Bio-pellets—an energy product made from biomass—is one option that can be utilized. One source of biomass energy is walnut kernel shells. The walnut plant (Canarium indicum L.) is a forest tree grown in eastern Indonesia. The walnut plant is also located in the GOR Pajajaran area of Bogor City and has not been utilized for energy production. This study consists of three stages: 1) raw material preparation, 2) bio-pellet production, and 3) bio-pellet characterization in accordance with the Indonesian National Standard (SNI) 8951:2020. Based on the results of our study, bio-pellets made from 100% walnut kernel shells can be utilized as fuel, with a calorific value of 4,593 cal/g. Although the moisture content remains high, the calorific value still meets the standard for power plants according to SNI 8951:2020. In addition, palm kernel shells can improve the quality of bio-pellet products. The combination of 30% walnut kernel shells and 70% palm kernel shells improves calorific value, with the following specifications: 4,684.4 cal/g of calorific value, 8.83% moisture content, 1.85% ash content, 69.16% volatile materials, 19.30% fixed carbon, 0.02% sulfur content, and 1.18% bulk density.

Socialization and Training on Ecoenzyme Manufacture in the Enviromoms Community, in Bojong Depok Baru II Housing, Sukahati, Cibinong, Bogor District Nuraeni, Farida; Iryani, Ani
Jurnal Pengabdian Masyarakat Inovatif Vol. 1 No. 2 (2023): JPMI (Jurnal Pengabdian Masyarakat Inovatif)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/jpmi.v1i2.76

ABSTRACT Enviromoms is a community created to improve virtual community-based community empowerment programs into solutions to overcome waste problems. One strategic role that has the potential to reduce the amount of waste generated by housewives. The aim of this program is to form a virtual community of Enviromoms housewives that focuses on the environmental sector, educate Enviromoms members and the community regarding zero waste homes, and form a waste-free Rukun tetangga pilot area. This program was attended by 20 mothers. Solution offered by the university, in this case the Chemistry Study Program, Faculty of Mathematics and Natural Sciences, Pakuan University, is to provide counseling about making ecoenzymes. The lack of knowledge of the community, especially the Enviromoms community group, in processing and optimizing the potential of organic waste from the kitchen needs to be improved through outreach and training. The output targets of proposal grant to be achieved include publication in the JPMI journal at Pakuan University, publication in the Jabar Online mass media, videos of the implementation of service activities which can be accessed online and improving skills in making ecoenzymes for mothers who are members of the Enviromoms community. The planned activities that will be carried out include socialization about ecoenzymes and their benefits, and training in making ecoenzymes from organic waste in the kitchen and practice by the participants.

Socialization and Training on Ecoenzyme Manufacture in the Enviromoms Community, in Bojong Depok Baru II Housing, Sukahati, Cibinong, Bogor District Nuraeni, Farida; Iryani, Ani
Jurnal Pengabdian Masyarakat Inovatif Vol. 1 No. 2 (2023): JPMI (Jurnal Pengabdian Masyarakat Inovatif)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/jpmi.v1i2.76

ABSTRACT Enviromoms is a community created to improve virtual community-based community empowerment programs into solutions to overcome waste problems. One strategic role that has the potential to reduce the amount of waste generated by housewives. The aim of this program is to form a virtual community of Enviromoms housewives that focuses on the environmental sector, educate Enviromoms members and the community regarding zero waste homes, and form a waste-free Rukun tetangga pilot area. This program was attended by 20 mothers. Solution offered by the university, in this case the Chemistry Study Program, Faculty of Mathematics and Natural Sciences, Pakuan University, is to provide counseling about making ecoenzymes. The lack of knowledge of the community, especially the Enviromoms community group, in processing and optimizing the potential of organic waste from the kitchen needs to be improved through outreach and training. The output targets of proposal grant to be achieved include publication in the JPMI journal at Pakuan University, publication in the Jabar Online mass media, videos of the implementation of service activities which can be accessed online and improving skills in making ecoenzymes for mothers who are members of the Enviromoms community. The planned activities that will be carried out include socialization about ecoenzymes and their benefits, and training in making ecoenzymes from organic waste in the kitchen and practice by the participants.

Upaya Pengurangan Limbah Kemasan Plastik Air Minum Melalui Kajian Kualitas Keran Air Siap Minum (KASM) di Wilayah Kota Bogor Iryani, Ani; Syahputri, Yulian; Ramadhini, Dania; Purnama, Dicky Budhi
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 10 No. 2 (2024): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v10i2.597

Sales of bottled drinking water (AMDK) increase in line with population growth every year. Based on data from the Indonesian Plastic Industry Association (Inaplas) and BPS, Indonesia produces 64 million tons of waste/year, and 3.2 million tons of plastic waste comes from AMDK. In connection with the community's dependence on consuming AMDK, the government through the Regional Public Company (PERUMDA) Tirta Pakuan created a superior program, namely Tap Water Ready to Drink (KASM). The problem is that many residents do not take advantage of KASM's services. The aim of this research is to compare the quality of AMDK and KASM so that the public can obtain information and increase confidence in the quality, safety and cleanliness of drinking water originating from KASM. This research method includes sampling followed by analysis of physical parameters (color, odor, taste, temperature), chemical (turbidity, TDS, metals, pH, Cl-, F-, NO2-, NO3-, NH3, hardness, CN -, SO42-) and Total microbiology (Coliform, E.coli) based on quality standards PERMENKES 492/2010. KASM samples were taken at 6 points using the SNI 8995:2021 method. The AMDK sample was obtained by purchasing 5 brands of AMDK randomly. Physical, chemical and microbiological parameters were analyzed using the APHA, SNI, US-EPA methods using ICP-OES, UV-Vis spectrophotometer and nephelometer. The results show that all KASM and AMDK samples have met the quality standards of PERMENKES 492/2010. Based on the comparison of analysis results, all AMDK samples had lower quality compared to KASM samples even though other microbiological, chemical and physical parameters were not significantly different.

KARAKTERISASI DAN ADSORPSI KARBON TERSULFONASI DARI BAMBU ANDONG DENGAN PERBEDAAN UKURAN PARTIKEL Lisna Efiyant; Angelica Paramasari; Poedji Hastoeti; Dadang Setiawan; Novitri Hastuti; Nela Rahmati Sari; Ani Iryani
Jurnal Penelitian Hasil Hutan Vol. 40 No. 2 (2022): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2022.40.2.115%E2%80%93124

Carbon has many benefits as an adsorbent, catalyst, drug delivery, energy, and it can produced from various resources, includinglignocellulosic biomass. One of the potential biomass for carbon material is bamboo. The particle size is usually inversely proportionalto the surface area and adsorption level; therefore, studying the particle size of activated carbon is essential. This research aims toproduce carbon and sulfonated carbon from andong bamboo to understand the effect of particle size on the characteristics andadsorption capacity. The method for this research was the pyrolysis of andong bamboo into sulfonated carbon bioproducts usingH2SO4 10N with variations in particle size of 60 and 100 mesh. The proximate analysis of activated carbon based on IndonesianNational Standard (SNI) No.06-3730-1995 includes moisture content, ash content, volatile matter content, and fixed carbon.Sulfonated carbon adsorption analysis was conducted on iodine, methylene blue, ammonia, chloroform, and benzene compounds.The result showed that the proximate parameters of activated carbon produced had met the SNI requirements. The adsorptioncapacity of activated carbon on the adsorption of iodine, methylene blue, ammonia, chloroform, and benzene was 421.71432.50mg/g; 20.3521.90 mg/g; 9.559.98 mmol/g; 10.1615.03%, and 4.63.83%, respectively. Based on andong sulfonatedcarbon data, it can be used as an adsorbent and renewable green catalyst.

Implementing a Simple Water Filtration System to Enhance Water Quality in Rural Communities: A Case Study of Kalong Liud Village Hasanah, Uswatun; Sutanto; Iryani, Ani; Zulfa, Naura Devana; Pratiwi, Fany Dwi; Darussalam, Muhamad Virgi
Jurnal Pengabdian Masyarakat Inovatif Vol. 3 No. 2 (2025): JPMI (Jurnal Pengabdian Masyarakat Inovatif)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar

In response to global challenges outlined by the United Nations Sustainable Development Goals (SDGs), this study addresses the urgent need for clean water in Klong Liud Village, Bogor Regency. The village struggles with inadequate water sources due to shallow wells contaminated by sedimentary rocks, forcing reliance on the Cikaniki River, which fails to meet Indonesian water quality standards. This research implements a Simple Water Filtration System to improve local water quality, employing a multi-stage filtration process that includes activated carbon, aquarium filters, and ijuk (palm fiber). The filtration unit was designed with three sequential stages and constructed together with local residents to ensure community participation and practical skill transfer. Post-implementation observations showed clear improvements in water appearance, odor, and acceptability for domestic use, indicating that the system effectively enhanced physical water quality. Methodologically, the project involved a field survey to assess water quality issues, community engagement to ensure local participation, and the construction of a filtration system capable of providing clean water. The evaluation post-implementation confirmed significant improvements, transforming initially polluted water into clean, odorless water suitable for daily use. This study highlights the effectiveness of simple filtration technologies in addressing water quality issues in rural settings and underscores the importance of sustainable solutions in achieving global water accessibility targets.

Implementing a Simple Water Filtration System to Enhance Water Quality in Rural Communities: A Case Study of Kalong Liud Village Hasanah, Uswatun; Sutanto; Iryani, Ani; Zulfa, Naura Devana; Pratiwi, Fany Dwi; Darussalam, Muhamad Virgi
Jurnal Pengabdian Masyarakat Inovatif Vol. 3 No. 2 (2025): JPMI (Jurnal Pengabdian Masyarakat Inovatif)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar

In response to global challenges outlined by the United Nations Sustainable Development Goals (SDGs), this study addresses the urgent need for clean water in Klong Liud Village, Bogor Regency. The village struggles with inadequate water sources due to shallow wells contaminated by sedimentary rocks, forcing reliance on the Cikaniki River, which fails to meet Indonesian water quality standards. This research implements a Simple Water Filtration System to improve local water quality, employing a multi-stage filtration process that includes activated carbon, aquarium filters, and ijuk (palm fiber). The filtration unit was designed with three sequential stages and constructed together with local residents to ensure community participation and practical skill transfer. Post-implementation observations showed clear improvements in water appearance, odor, and acceptability for domestic use, indicating that the system effectively enhanced physical water quality. Methodologically, the project involved a field survey to assess water quality issues, community engagement to ensure local participation, and the construction of a filtration system capable of providing clean water. The evaluation post-implementation confirmed significant improvements, transforming initially polluted water into clean, odorless water suitable for daily use. This study highlights the effectiveness of simple filtration technologies in addressing water quality issues in rural settings and underscores the importance of sustainable solutions in achieving global water accessibility targets.

Purification of Used Cooking Oil with Avocado Seed Powder as Biosorbent Iryani, Ani; Hasanah, Retna; Kusumawardani, Linda Jati; Fathurrahman, Muhammad
Jurnal Kartika Kimia Vol 8 No 2 (2025): Jurnal Kartika Kimia
Publisher : Department of Chemistry, Faculty of Sciences and Informatics, University of Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26874/jkk.v8i2.933

Cooking oil is a basic ingredient in food preparation. Repeated use of cooking oil at high temperatures produces free fatty acids (FFA), which indicate oil degradation. The initial free fatty acid content of the used cooking oil in this study was 0.95%. This study aimed to prepare, activate, and evaluate avocado seed powder as a biosorbent for reducing free fatty acids in used cooking oil and to determine the optimal adsorption conditions with respect to temperature, contact time, and adsorbent mass. The activated avocado seed biosorbent showed a moisture content of 5.40%, ash content of 0.68%, iodine adsorption capacity of 768 mg/g, methylene blue adsorption capacity of 22.57 mg/g, and a surface area of 84.69 m²/g. The optimum adsorption condition was achieved at 90°C, 120 minutes contact time, and 20 g adsorbent mass. Under these conditions, the free fatty acid content decreased from 0.95% to 0.40%, corresponding to a reduction in efficiency of 58.05%. The peroxide value and water content were also reduced significantly. The adsorption capacity of avocado seed biosorbent was 27.96 mg/g for free fatty acids, 3.28 mg/g for peroxide value, and 6.16 mg/g for water content.

A Comparative Photocatalytic Activity of ZnO and TiO₂ toward Rhodamine B Degradation under UV Irradiation Uswatul Hasanah; Linda Jati Kusumawardani; Ani Iryani
Helium: Journal of Science and Applied Chemistry Vol. 6 No. 1 (2026): Helium: Journal of Science and Applied Chemistry
Publisher : Study Program of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/helium.v6i1.8

The rapid growth of Indonesia’s textile sector has increased waste output. Textile production generally uses synthetic dyes, such as rhodamine B. These manufactured substances typically contain compounds that are harmful to the environment. Photodegradation using photocatalysts is a common dye degradation method. Among various semiconductor materials, TiO₂ and ZnO are known to exhibit excellent photocatalytic activity. This study aims to assess the effectiveness of TiO₂ and ZnO photocatalysts in the degradation of rhodamine B dye. Several variables, including catalyst dosage (5, 15, 25, 35, 45, 55, 65, 75, and 85 mg), pH (4–8), and degradation time (60–480 min), were used to establish the photocatalytic process’s effectiveness and optimum conditions.The properties of TiO₂ and ZnO were characterized using scanning electron microscopy, X-ray diffraction, and BET analyses. Each catalyst (65 mg ZnO and 55 mg TiO₂) was added to the rhodamine B solution and exposed to a UV lamp to conduct the experiments. The results showed that TiO₂ demonstrated better photocatalytic efficiency than ZnO. The optimum degradation occurred after 6 h at pH 5. TiO₂ has a smaller crystal size and higher surface area than ZnO, contributing to its superior performance. The degradation efficiency reached 26.50% for ZnO and 48.40% for TiO₂. These data indicate that TiO₂ is more effective than ZnO for rhodamine B photodegradation under the examined conditions.

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