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Modification of Zeolite Made from Coal Fly Ash with TiO2: Effect of Aging Time on Physical and Optical Properties Kusumawardani, Linda Jati; Iryani, Ani; Sinaga, Ennita Lusiana
Makara Journal of Science Vol. 27, No. 1
Publisher : UI Scholars Hub

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The high levels of metal oxides, SiO2, and Al2O3 give coal fly ash the potential for development into zeolite. Zeolite was prepared from fly ash by combining alkaline fusion with hydrothermal treatment. Using this method results in a high surface area, high mechanical properties, and high crystallinity of the sample. Zeolite as a product is modified by TiO2. This study was intended to determine the effect of the operating process in zeolite synthesis from coal fly ash on the types and properties of zeolite and the effect of the aging time of TiO2-modified zeolite at 14, 16, and 20 h. Investigating its physical and optical properties shows that the product contains zeolite X as the major phase. The zeolite X itself contains 96% crystallinity and a specific surface area of 164.78 m2/g. Meanwhile, TiO2/zeolite increases the light absorption in the visible region. Diffuse reflectance spectroscopy showed that a 14 h aging time results in the lowest band gap energy of 2.50 eV and the largest surface area of 189.483 m2/g. X-ray diffraction characterization found that TiO2/zeolite is an anatase crystal (~9 nm) with 99% crystallinity. A pilot examination of the photodegradation performance of the TiO2/zeolite nanocomposite was evaluated using 5 mg/L methylene blue and compared with that of zeolite alone.

PEMBERDAYAAN MASYARAKAT NON PRODUKTIF MELALUI KETERAMPILAN PEMBUATAN TAWAS DARI LIMBAH KALENG BEKAS MINUMAN Iryani, Ani; Sutanto, Sutanto; Fathurrachman, Muhammad
Qardhul Hasan: Media Pengabdian kepada Masyarakat Vol. 3 No. 2 (2017): OCTOBER
Publisher : Universitas Djuanda

PEMBERDAYAAN MASYARAKAT NON PRODUKTIF MELALUI KETERAMPILAN PEMBUATAN TAWAS DARILIMBAH KALENG BEKAS MINUMANABSTRACT Leuwiliang Village, Leuwiliang District, Bogor Regency, is a village that has a fairly dense population with diverse livelihoods. Village Government information is known as 25% of the population has not had a job, so classified as a non-productive society with a very limited educational background and skills. The people of this group are right as partners of abdimas to be given an advanced skills in order to be independent. In this abdimas given the skill to make alum from waste used drink cans. The existing hope can transform into a working society and become a productive society. Instead it can improve the economic prosperity of the village. Abdimas this time was chosen from RW 10 residents of Leuwiliang village with potential both men and women. In addition, also selected the Foundation of Islamic Education Saefulloh Assa'diyyah (YAPISA) which can provide a means of producing alum from the raw materials used tin cans. Implementation of this program is done through training and demonstration skill of alum making from raw materials of beverage cans for household scale until finished product with good alum quality, this training had be done 4 time in July and August 2017. The results are very satisfying, the community was very enthusiast, they able to make alum products well and able to demonstrate how to use alum products for purification of turbid water.Keywords: abdimas, alum, KOH, waste used tin cans. ABSTRAK Desa Leuwiliang Kecamatan Leuwiliang Kabupaten Bogor, adalah desa yang memiliki jumlah penduduk cukup padat dengan mata pencaharian yang beragam. Dari informasi pemerintah Desa Leuwiliang diketahui sebanyak 25% penduduk belum memiliki pekerjaan, sehingga tergolong sebagai masyarakat non-produktif dengan latar belakang pendidikan dan keterampilan yang sangat terbatas. Masyarakat kelompok ini tepat sebagai mitra Abdimas untuk diberikan keterampilan lanjut agar bisa mandiri. Pada abdimas ini diberikan keterampilan membuat tawas dari limbah kaleng bekas minuman. Harapan yang ada dapat mengubah menjadi masyarakat berkarya serta menjadi masyarakat yang produktif. Alih-alih dapat meningkatkan kesejahteraan ekonomi di desa tersebut. Abdimas kali ini dipilih dari warga RW 10 Desa Leuwiliang yang potensial baik laki-laki maupun perempuan. Selain itu dipilih juga Yayasan Pendidikan Islam Saefulloh Assa’diyyah (YAPISA) yang dapat menyediakan sarana berupa tempat memproduksi tawas dari bahan baku berupa kaleng bekas. Pelaksanaan program ini dilakukan melalui pelatihan dan demontrasi keterampilan pembuatan tawas dari bahan baku kaleng bekas minuman untuk skala industri rumah tangga sampai dihasilkan produk jadi dengan kualitas tawas yang baik. Pelatihan ini dilaksanakan 4 kali pada bulan Juli dan Agustus 2017. Hasil yang didapat sangat memuaskan, masyarakat sangat antusias mengikuti tahap demi tahap pelatihan dan mampu membuat produk tawas dengan baik dan mampu memperagakan bagaimana menggunakan produk tawasnya untuk menjernihkan air keruh.

Photodegradation Of Methyl Orange (MO) Using TiO2/Zeolite From Coal Fly Ash Waste Under Acidic Conditions and H2O2 Addition Prakoso, Muhamad Iqbal; Maharani, Khairy Yunda; Ariq, Muhammad Rizki; Indah, Amalia Nurul; Apriansyah, Apriansyah; Iryani, Ani; Kusumawardani, Linda Jati; Syahputri, Yulian
Helium: Journal of Science and Applied Chemistry Vol 4, No 1 (2024): Helium: Journal of Science and Applied Chemistry
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/helium.v4i1.9503

This study aims to degrade methyl orange dye by a photocatalytic method using TiO2/zeolite nanocomposite. The zeolite used is sourced from coal waste fly ash. While the TiO2/Zeolite nanocomposites were synthesized by the sol-gel method and analyzed using UV-Vis DRS to determine the band gap energy. The band gap energy obtained from calculation results of the Kubelka-Munk formula shows a value of 2.0 eV. This indicates that the working area of methyl orange photodegradation using TiO2/zeolite is in visible light. Optimization of the methyl orange photodegradation process in this study will be carried out in an acidic environment by varying the nanocomposite dose (0.05; 0.1; 0.2; 0.3; and 0.4 g) and the length of time of irradiation (15; 30; 45; 60; and 75 minutes). This study also conducted a study on the effect of adding H2O2. The optimum yield of percent degradation (%D) of methyl orange (MO) obtained was 98.37% from initial concentration 10 mg/L to 0,16 mg/L with varying doses of TiO2/zeolite 0.1 g and 30 minutes in an acidic environment and the addition of H2O2.

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
JURNAL SAINS NATURAL 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
Publisher : UI Scholars Hub

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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.

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