Article Per Year (5 Year)
p-Index From 2021 - 2026
1.347
P-Index
This Author published in this journals
All Journal Reaktor Indonesian Journal of Chemistry JMM (Jurnal Masyarakat Mandiri) Widya Teknik
Puspitasari, Nathania
Unknown Affiliation
Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Energy Materials Science & Nanotechnology Other

Published : 7 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 7 Documents
Search

 1 
Heterogeneous Fenton Degradation of Batik Wastewater using Natural Pyrite Irawaty, Wenny; Yuliana, Maria; Wijaya, Christian J.; Retnoningtyas, Ery S.; Lourentius, Suratno; Puspitasari, Nathania; Hamidah, Umi
Reaktor Volume 23 No.3 December 2023
Publisher : Department of Chemical Engineering, Faculty of Engineering, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/reaktor.23.3.101-107

Abstract

Heterogeneous Fenton processes with solid natural pyrite catalyst have gained attention for wastewater treatment. The improvement of degradation efficiency of natural pyrite is specific and therefore, it is still a challenging issue. This study was aimed to investigate the performance of Indonesian natural pyrite, without any purification, to treat the real wastewater obtained from batik home industry. To address this issue, several experiment variables such as pre-reaction between pyrite and hydrogen peroxide, hydrogen peroxide concentration, and pH were investigated. COD removal has been found to increase in a slightly acid condition (4.5 to 5.65) and inhibited at pHs of 8 and above (10). The results showed the presence of hydrogen peroxide was indeed greatly influence the wastewater degradation and the solution pH did not significantly change the wastewater degradation in the range of 3 and less than 8. Moreover, the pre-reaction period was found as the important part to initiate the degradation process. The optimum degradation efficiency was obtained by providing the pre-reaction time of 20 min with the addition of 326 mmol/L of H2O2 in the system and the mixture was reacted for 30 min at room temperature and real wastewater pH. Based on results observed in this study, it can be concluded that the batik wastewater can be degraded by natural pyrite up to 84% under reaction conditions studied. This finding offers great opportunity to further investigate and develop the heterogeneous Fenton process for real applications in industry.
Pseudoternary Phase Diagram and Antibacterial Activity of Microemulsion-Based Citronella Oil Gunarto, Chintya; Go, Alchris Woo; Angkawijaya, Artik Elisa; Lie, Jenni; Soetaredjo, Felycia Edi; Ismadji, Suryadi; Puspitasari, Nathania; Putro, Jindrayani Nyoo; Risdian, Chandra
Indonesian Journal of Chemistry Vol 24, No 3 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.93250

Abstract

Citronella oil (CTO) is extracted from citronella leaves by maceration or steam distillation process, which has antibacterial and insect-repellent activities. However, the use of CTO is limited and requires modification in other formulations, such as microemulsion (ME), to increase its bioactivities. ME consists of oil, water, surfactant and/or cosurfactant and is commonly applied in food and beverages, cosmetics, and carrier for drug delivery applications. CTO was used as the oil phase for ME with nonionic surfactant and ethanol as a cosurfactant for lowering interfacial tension between oil and water phase. Subsequent observations regarding stability and antibacterial tests were carried out on ME formulations with surfactant/cosurfactant mixture of 2 due to its largest ME area. A hydrodynamic diameter analysis was also carried out to see the stability of the ME within a period of 50 d. ME with 10% CTO, 30% surfactant mixture, and 60% water showed the best formulation observed from the consistent hydrodynamic diameter measurement. In addition, ME with different formulations could inhibit the growth of Escherichia coli and Staphylococcus aureus by more than 90%. From this research, CTO-based ME potentially improve and develop drug carrier applications, especially via topical route.
Optimum and Green Fabrication of MIL-100(Fe) for Crystal Violet Dye Removal from Aqueous Solution Wijaya, Christian Julius; Soetaredjo, Felycia Edi; Yuliana, Maria; Santoso, Shella Permatasari; Hartono, Sandy Budi; Irawaty, Wenny; Lie, Jenni; Putro, Jindrayani Nyoo; Gunarto, Chintya; Puspitasari, Nathania; Ismadji, Suryadi; Gunawan, Setiyo
Indonesian Journal of Chemistry Vol 24, No 5 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.93323

Abstract

MIL-100(Fe) was prepared and subsequently used to remove crystal violet dye from aqueous solutions simulating dye-containing wastewater in the environment. In the future, it is aimed that MIL-100(Fe) can be used in managing dye-containing wastewater in the environment and reducing the negative impacts it can cause. Here, MIL-100(Fe) fabrication needs to be optimized to obtain optimum process conditions, which are environmentally friendly and can produce MIL-100(Fe) with the best characteristics. This study focused on optimizing the fabrication of MIL-100(Fe), which is a type of MOF with good chemical stability, thermal stability, and flexible structure. In this study, the room-temperature fabrication of MIL-100(Fe) was established using a ligand-to-metal molar ratio of 0.95 and an acetic acid concentration of 5.1 vol% for 6.2 h. The optimum MIL-100(Fe) was tested for crystal violet removal and provided an optimum removal capacity of 182.66 ± 3.81 mg/g. Statistical approaches are used to investigate the independent parameters and their interactions contributing to MIL-100(Fe) formation.
Accelerated Biodegradation of Waste Polyethylene Terephthalate (PET) Fiber by Recombinant Hydrophobin HGFI Fused with Ideonella sakaiensis PETase Puspitasari, Nathania; Liu, Chia Tzu; Lee, Cheng Kang
Indonesian Journal of Chemistry Vol 25, No 5 (2025)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.93092

Abstract

Nowadays, an efficient and environmentally friendly polyethylene terephthalate (PET) recycling method has gained greater attention, enabling a circular economy for polyesters. Since PET is a hydrophobic polymer, the enzyme's binding affinity to PET becomes a significant issue. Herein, the first strategy is introduced to enhance PET fiber hydrolysis by genetically fusing hydrolyzing enzymes such as cutinase and PETase to protein hydrophobin HGFI. HGFI, a surface-active protein from Grifola frondosa, was used to improve the rate of enzyme hydrolysis. Furthermore, cellulose binding domains (CBD) were employed as a solubility enhancer tag of PETase fusion due to the insoluble characteristics of HGFI and PETase. The fusion proteins (CBD-HGFI-PETase and HGFI-Cut_2) were constructed with a flexible linker, expressed in Escherichia coli, and then purified by chromatography. PETase fusion exhibited 2.5-fold higher concentrations of monomer products released than that of cutinase fusion after 5 days of hydrolysis. According to the results, the fusion of HGFI to PETase showed excellent performance for enhancing the binding affinity of the enzyme on PET fiber substrate due to the increasing number of self-assembled hydrophobin interactions that modified the PET surface to be more hydrophilic. Therefore, this study indicates that the construction of CBD-HGFI-PETase enzyme fusion could be used as a novel method for efficiently accelerating PET biodegradation.
A Review of Biofuels and Their Positive Impacts on Health and the Environment Yuliana, Maria; Ismadji, Suryadi; Wijaya, Christian Julius; Soetaredjo, Felycia Edi; Lie, Jenni; Hartono, Sandy Budi; Irawaty, Wenny; Puspitasari, Nathania; Lourentius, Suratno
Widya Teknik Vol. 23 No. 1 (2024): May
Publisher : Fakultas Teknik, Universitas Katolik Widya Mandala Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33508/wt.v23i1.5454

Abstract

Indonesia's high population and rapid economic growth are driving a major transformation in the transportation sector, which is in line with the high increase in fuel demand. The need for biofuel as a substitute for conventional fuel is increasingly being prioritized by considering sustainable development goals (SGDs). Biofuel has safer health and environmental impacts than conventional fuel but still has fuel performance that meets fuel standards and engine performance. Biofuels can be derived from a variety of more sustainable and abundant raw materials, such as biomass and vegetable oils. In this review biodiesel, hydrogenated vegetable oil (HVO), and direct vegetable oil (SVO) are discussed in depth regarding the transformation of their production processes and their impacts on health and the environment. Biodiesel is one of the most widely developed and implemented compared to HVO and SVO to encourage the use of renewable energy in various aspects of people's lives in Indonesia. These three biofuels have different fuel characteristics and performance but can continue to be developed in the future to increase the implementation of renewable energy more massively.
PELATIHAN PRODUK APLIKATIF BERBASIS KIMIA UNTUK ANAK-ANAK PANTI ASUHAN DI SURABAYA Puspitasari, Nathania; Retnoningtyas, Ery Susiany; Gunarto, Chintya; Hartono, Sandy Budi; Irawaty, Wenny; Santoso, Shella Permatasari; Putro, Jindrayani Nyoo; Wijaya, Christian Julius; Harianto, Octaviani; Widharka, Maria Rosario
JMM (Jurnal Masyarakat Mandiri) Vol 9, No 5 (2025): Oktober
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jmm.v9i5.33883

Abstract

Abstrak: Panti asuhan adalah sebuah lembaga yang dikhususkan untuk mengasuh anak-anak yang telah kehilangan keluarga dan menghadapi tantangan dalam hidup mandiri karena kurangnya kasih sayang yang konsisten dan persiapan yang tidak memadai untuk masa dewasa. Tujuan dari kegiatan pengabdian kepada masyarakat ini yaitu pengembangan softskill dan hardskill melalui pelatihan pembuatan produk berbasis kimia kepada anak-anak panti asuhan sebagai generasi penerus bangsa. Peserta kegiatan mencangkup anak-anak berusia 10-16 tahun dengan jumlah 30 anak. Metode pelaksanaan meliputi perencanaan, pelatihan, refleksi, dan evaluasi. Kegiatan pertama yaitu perencanaan yang berisi persiapan dan sosialisasi kegiatan pengabdian kepada perwakilan panti asuhan di Surabaya, kegiatan kedua yaitu pelatihan pembuatan produk popping boba bersama anak-anak panti asuhan, kegiatan ketiga adalah refleksi dengan mendiskusikan hasil percobaan anak-anak serta evaluasi berupa pembagian kuesioner kepada peserta mengenai program pelatihan ini sehingga dapat dipakai untuk peningkatan kinerja pada kegiatan yang akan datang. Berdasarkan hasil evaluasi, terdapat peningkatan signifikan pada rata-rata nilai post-test sebesar 72,45% dibandingkan nilai pre-test. Hal ini mengindikasikan bahwa pembelajaran berbasis praktek mampu meningkatkan pemahaman peserta secara signifikan. Diharapkan anak-anak panti asuhan yang telah mengikuti kegiatan pelatihan ini memperoleh motivasi, pengetahuan, dan keterampilan dalam mengaplikasikan ilmu kimia sehingga dapat bermanfaat untuk masa mendatang.Abstract: An orphanage is institution dedicated to caring for children who have lost their families and face challenges in living independently due to a lack of consistent love and inadequate preparation for adulthood. The purpose of this community service activity is to develop softskills and hardskills through chemical-based products training for the orphanage children, who will become the nation's future generation. Participants include children aged 10-16 years with a total of 30 children. The implementation method includes planning, training, reflection, and evaluation. The first activity was planning which contains preparation and socialization of community service activities to representatives of orphanages in Surabaya, the second activity was training in making popping boba products with orphanage children, the third activity was reflection by discussing the results of the children's experiments and evaluation by distributing questionnaires to participants. Based on the results, there was a significant increase in the average post-test score of 72.45% compared to the pre-test score. This indicates that practice-based learning can significantly improve participants' understanding. It is hoped that orphanage children who have participated in this training activity will gain motivation, knowledge, and skills in applying chemistry so that it can be useful for the future.
DISEMINASI TEKNOLOGI TEPAT GUNA ALAT PENGOLAH MINYAK JELANTAH MENJADI BIODIESEL BAGI MASYARAKAT KECAMATAN JAMBANGAN SURABAYA Retnoningtyas, Ery Susiany; Gunawan, Ivan; Putro, Jindrayani Nyoo; Puspitasari, Nathania; Joewono, Andrew; Anggorowati, Adriana Anteng; Santoso, L. M. Hadi; Yuliana, Maria; Yunita, Theresia Laurensia
JMM (Jurnal Masyarakat Mandiri) Vol 8, No 1 (2024): Februari
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jmm.v8i1.20265

Abstract

Abstrak: Minyak goreng bekas pakai atau minyak jelantah merupakan salah satu limbah rumah tangga terbesar di Indonesia. Minyak jelantah yang dibuang sembarangan dapat mencemari lingkungan. Masyarakat di kecamatan Jambangan, kota Surabaya sangat menyadari dampak buruk dari pencemaran minyak jelantah terhadap lingkungan. Karena itulah diinginkan mengolah minyak jelantah yang telah dikumpulkan sebagai bahan bakar biodiesel. Tujuan pengabdian masyarakat ini adalah untuk meningkatkan kesadaran masyarakat Jambangan agar tidak membuang secara sembarangan limbah minyak jelantah sehingga dapat menurunkan jumlah limbah minyak jelantah yang dibuang ke lingkungan. Metode kegiatan yang dilaksanakan adalah melakukan edukasi berupa pemberian materi dan praktek cara mengubah limbah minyak jelantah menjadi biodiesel menggunakan alat pengolah minyak jelantah. Untuk memudahkan pengoperasian alat pengolah minyak jelantah ini, didampingi dengan manual penggunaannya yang disusun menggunakan bahasa yang mudah dipahami oleh masyarakat sehingga dapat belajar secara mandiri. Mitra yang terlibat dalam kegiatan ini adalah Ikatan Pekerja Sosial Masyarakat (IPSM) Jambangan dan masyarakat kelurahan Karah, kecamatan Jambangan. Hasil dari aktivitas ini, masyarakat kecamatan Jambangan Surabaya dapat mempraktekkan langsung proses pengolahan minyak jelantah menjadi biodiesel. Bahkan dalam hasil evaluasi kuesionernya, mayoritas yaitu sebanyak 72% ingin mengikuti kompetisi di wilayahnya dengan memanfaatkan alat pengolah minyak jelantah ini. Hal ini tentunya menunjukkan apresiasi yang luarbiasa terhadap kegiatan abdimas ini.Abstract: Used cooking oil residue or known as ‘jelantah’ oil is one of the largest household wastes in Indonesia. Used cooking oil residue that is thrown away carelessly can pollute the environment. People in Jambangan sub-district, Surabaya city are very aware of the negative impact of used cooking oil pollution on the environment. That's why it is desirable to process the collected ‘jelantah’ oil as biodiesel fuel. The aim of this community service is to increase awareness of the Jambangan community not to carelessly dispose of used cooking oil waste so that it can reduce the amount of used cooking oil waste that is thrown into the environment. The method of activity is to provide education in the form of providing material and practice on how to convert used cooking oil waste into biodiesel using used cooking oil processing equipment. To make it easier to operate this used cooking oil processing tool, it is accompanied by a manual for its use which is prepared using language that is easy for the public to understand so that they can learn independently. The partners involved in this activity are the Jambangan Community Social Workers Association (IPSM) and the community of Karah - Jambangan sub-district. As a result of this activity, the people of Jambangan Surabaya sub-district can directly practice the process of ‘jelantah’ oil into biodiesel. Even in the results of the questionnaire evaluation, the majority, namely 72%, wanted to take part in competitions in their area using this used ‘jelantah’ oil processing equipment. This certainly shows extraordinary appreciation for this community service activity.
Co-Authors Adriana Anteng Anggorowati Andrew Joewono, Andrew Angkawijaya, Artik Elisa Chandra Risdian Ery Susiany Retnoningtyas Felycia Edi Soetaredjo Go, Alchris Woo Gunarto, Chintya Hamidah, Umi Harianto, Octaviani Hartono, Sandy Budi Ivan Gunawan Lee, Cheng Kang Lie, Jenni Liu, Chia Tzu Lourentius, Suratno Putro, Jindrayani Nyoo Retnoningtyas, Ery S. Santoso, L. M. Hadi Santoso, Shella Permatasari Setiyo Gunawan Suryadi Ismadji Wenny Irawaty Widharka, Maria Rosario Wijaya, Christian J. Wijaya, Christian Julius Yuliana, Maria Yunita, Theresia Laurensia