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Pengaruh karbon aktif sekam padi terhadap penyerapan Pb (timbal) dalam pelumas bekas kendaraan bermotor Safitri, Rizki Tri; Adhani, Lisa; Nuraliyah, Andi
Journal of Innovation Materials, Energy, and Sustainable Engineering Vol. 1 No. 2: (January) 2024
Publisher : Institute for Advanced Science Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/jimese.v1i2.2024.555

Abstract

The number of motorised vehicles, according to the Central Statistics Agency, reached 94,373,324 in 2012, and there was an increase in 2013 to 104,118,986. This is influenced by increasingly rapid population growth and the increasing need for transportation. Used lubricating oil is categorised as B3 waste, which can be seen from its characteristics and its constituent components. Rice husks resulting from milling that are not utilised optimally are usually only used as ash, or the use of rice husks has so far been limited to just being thrown away. Research was carried out regarding the activated carbon test from rice husk waste to adsorb Pb in used lubricating oil using a sulfuric acid activator and determine the effectiveness of reducing Pb (lead). The mass ratio of rice husks before and after calcination is 1:2, where the initial weight of the husks before calcination is 250 grammes to 125 grammes after undergoing calcination. A mass of 10 grammes of adsorbent that has been activated using sulfuric acid and a stirring time of 60 minutes can reduce the lead content of the used lubricant from 49,569 ppm to 39,241 ppm.
Dealumination Effect on ZSM-5 as a Bimetal Fe-Co Support for The Oxidative Desulfurization Process Catalyst Adhani, Lisa; Susanto, Bambang Heru; Nasikin, Mohammad
Jurnal Kimia Valensi Jurnal Kimia VALENSI, Volume 10, No. 1, May 2024
Publisher : Syarif Hidayatullah State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jkv.v10i1.38456

Abstract

Petroleum fuel is still the main energy source today but causes environmental problems such as SOx gas emissions. The Oxidative Desulfurization (ODS) method removes sulfur from fuel under mild conditions. ZSM-5 is a catalyst framework considered promising in the ODS process but the small pores cause a steric barrier. The hydrophobic, mesoporous Fe-Co/ZSM-5Hierarchy catalyst was designed using the dealumination method with steam treatment to overcome the steric barrier and biphasic hindrances which are problems in this ODS process. The Fe-Co/ZSM-5Hierarchy catalyst is effective for the ODS process at a temperature of 45 °C, 45 min, the amount of catalyst used is 0.2 g, oxidant at an O/S ratio of 2, and without mass transfer agents. The embedded Fe-Co ratio shows effective mass activity by providing a TOF number of 205 h-1 on the Fe-Co(5)/ZSM-5 Hierarchy and 157 h-1 on the Fe-Co(15)/ZSM-5 Hierarchy catalyst.
Facile Creating a Hierarchical and Hydrophobic Fe-Co/LZSM-5 Catalyst for the Oxidative Desulfurization Process Adhani, Lisa; Susanto, Bambang Heru; Nasikin, Mohammad
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.95267

Abstract

This research involved top-down dealumination and steam treatment methods to design the hierarchical pores of ZSM-5, which is then wet-impregnated with a Fe-Co. This method overcomes the steric barrier that hinders the oxidative desulfurization (ODS) process and makes the catalyst hydrophobic, thereby allowing it to overcome the biphasic hindrance caused by the difference in polarity between the fuel oil and the oxidant. Characterization of the catalyst's properties based on BET and BJH, XRF, and contact angle, as well as testing its performance on DBT model oil in n-hexadecane and Indonesian commercial diesel were conducted. Simulation of the reaction energy profile using density functional theory calculations was also carried out to deepen insight into the mechanism of the reaction. Results of this study show that the catalyst has excellent catalytic reactivity in the long-chain hydrocarbon ODS process, with a TOF number of 183 h−1.
Efektivitas Koagulan PAC dan Aluminium Sulfat dengan Kombinasi Flokulan pada Limbah Cair Pabrik Sepeda Motor Mursitaningrum, Audy Putri; Fricilia, Dea Kirana; Adhani, Lisa
Jurnal Sains dan Edukasi Sains Vol. 7 No. 2 (2024): Jurnal Sains dan Edukasi Sains
Publisher : Faculty of Science and Mathematics, Universitas Kristen Satya Wacana, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24246/juses.v7i2p90-95

Abstract

Industri kendaraan bermotor baik perakitan maupun pembuatan spare part tidak terlepas dari adanya limbah produksi, terutama limbah cair yang harus diolah sebelum dapat dibuang ke lingkungan. Bahan kimia sebagai koagulan seperti Poly Aluminium Chloride (PAC) dan Aluminium Sulfat (tawas) sudah banyak digunakan pada pengolahan limbah cair terutama untuk mengurangi partikel Total Suspended Solids (TSS) dalam rangka mengurangi kekeruhan air. Selain itu proses koagulan ini juga dapat menurunkan Chemical Oxygen Demand (COD) dan Biological Oxygen Demand (BOD).  Studi ini mengkombinasi koagulasi-flokulasi dengan jenis flok yaitu Poly Acrylamide Floculant (PAF), untuk membentuk flok yang mempercepat proses pengendapan semua partikel yang terlarut. Kombinasi ini menjadi kebaruan penelitian ini, karena masih belum banyak dikenal pada proses pengolahan limbah di pabrik sepeda motor, serta menemukan bahan koagulan yang terbaik. Metode pada studi ini yaitu One Group Pretest-Postest, dengan tujuan mengetahui efisiensi PAC dan tawas. Hasil menunjukkan data yang didapat dengan melakukan uji jar test yaitu pada penambahan koagulan, lama pengendapan, serta endapan yang terbentuk. Setelah proses jar test dapat dilihat hasil efisiensi penggunaan bahan-bahan koagulan yang digunakan dapat mempengaruhi limbah cair yang dihasilkan dari pengolahan koagulasi. Berdasarkan penelitian yang telah diuji coba koagulan yang paling baik menurunkan kadar COD, BOD, TSS adalah Poly Aluminium Chloride (PAC) dengan konsentrasi 10% menghasilkan penurunan BOD 94,16% dan COD 94,14% sedangkan penurunan kadar COD dan BOD menggunakan Aluminium Sulfat dengan dosis yang sama, menghasilkan penurunan BOD 83,22% dan COD 81,32%. Selain itu, menggunakan koagulan PAC tidak membuat limbah menjadi keruh dan terbilang aman bagi lingkungan bila pemakaian dosisnya berlebih.
Pembuatan susu kedelai kental manis dengan gula jagung fortifikasi kalsium dari cangkang telur untuk penderita diabetes Istiqomah, Wilujeng Hani; Adhani, Lisa
Social Agriculture, Food System, and Environmental Sustainability Vol. 1 No. 2: (Agustus) 2024
Publisher : Institute for Advanced Science, Social, and Sustainable Future (IASSSF)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/safses.v1i2.2024.1189

Abstract

Pendahuluan: Pengolahan susu dengan cara susu kental manis membuat dilema tersendiri bagi para penderita diabetes, karena kandungan gula susu kental manisberkisar pada angka 62.50%-64%. Sedangkan penderita diabetes hanya disarankan mengkonsumsi gula sebanyak 50 gr dalam sehari. Tujuan dari penelitian ini adalah mengetahui pembuatan susu kedelai kental manis dengan gula jagung dan pengaruhnya terhadap penambahan kalsium dari cangkang telur ayam ras. Parameter yang dikaji adalah uji organoleptic teradap panelis viskositas, protein, kadar gula, dan kadar kalsium. Metode: Metode penelitian ini menggunakan Rancangan acak kelompok (RAK) dengan 3 faktor. Faktor 1 konsentrasi susu kedelai (45,45%, 55,56%, 57,14%) faktor 2 yaitu penambahan gula jagung sebanyak (24 gr dan 18 gr) dan factor 3 yaitu fortifikasi kalsium dengan cangkang telur sbanyak (0 gr, 1gr, 2 gr). Temuan: Hasil dari penelitian ini menunjukkan bahwa perlakuan terbaik berdasarkan uji organoleptik adalah susu kedelai kental manis dengan konsentrasi susu kedelai 55,56% dan 4% gula. Dan pada uji kadar kalsium serta protein didapatkan hasil terbaik pada penambahan sebanyak 1 gr cangkang telur ayam ras dengan viscositas 4300 cP. Kadar gula 40% kandungan protein dan kalsium masing-masing 5,05%v/w dan 1653,44 mg/kg. Kesimpulan: Dengan ini diperlukan perhatian lebih terkait kebutuhan nutrisi yang dibutuhkan oleh tubuh manusia.
Ekstraksi fenol dari daun sirsak (annona murcata l): sokletasi dan destilasi Fitrianny, Eka; Adhani, Lisa; Nuraliyah, Andi
Journal of Biopesticides and Agriculture Technology Vol. 1 No. 1: (Februari) 2024
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/jbiogritech.v1i1.2024.608

Abstract

Background: Soursop, with the Latin name Annona muricata L, has become one of the herbal medicine materials under extensive development. One of the challenges faced in utilizing extracts from soursop leaves currently is the inefficiency of the solvents used. Methods: This study aims to determine the phenol content present in soursop leaves. The independent variable used is the process of drying soursop leaves before the soxhlet extraction process. The purpose of this process is to increase the phenol content in the concentrated soursop leaf extract after the soxhlet extraction process. Thus, this research involves two processes, namely the soxhlet extraction and distillation processes. Findings: The phenol content obtained from the FT-IR test is approximately 80-85% with an intensity at 3347.82 cm-1. Furthermore, the distillation process is carried out to obtain a distillate that will be tested using GC-MS instrument. The results of the GC-MS test show a value of approximately 1.723 with an area of 78.04. Conclusion: The longer the immersion of soursop leaves and the higher the concentration of the solvent used, the better the results tend to be. Identification of the effects of using different solvents with the same functional groups becomes important in further research.
Validasi dan Perbandingan Metode QuEChERS EN 15662:2008 dan AOAC 2007.01 untuk Analisis Residu Pestisida pada Kentang (Solanum tuberosum L.) Menggunakan LC-MS/MS Yesan, Cantikha Fortuna; Nuraliyah, Andi; Adhani, Lisa
Rekayasa Hijau : Jurnal Teknologi Ramah Lingkungan Vol 9, No 1 (2025)
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/jrh.v9i1.80-89

Abstract

ABSTRAKResidu pestisida pada kentang dapat membahayakan kesehatan jika melebihi batas aman, sehingga diperlukan metode analisis yang akurat. Penelitian ini bertujuan untuk memvalidasi metode QuEChERS EN 15662:2008 dan QuEChERS AOAC 2007.01 untuk analisis residu dimethoate dan methidathion. Hasil menunjukkan metode QuEChERS EN 15662:2008 memiliki koefisien determinasi (R²) sebesar 1 dan 0,9966, menunjukkan linearitas yang sangat baik dengan LoD dan LoQ masing-masing 0,000003 μg/kg dan 0,000009 μg/kg untuk dimethoate, serta 0,000003 μg/kg dan 0,000008 μg/kg untuk methidathion, menunjukkan sensitivitas tinggi. Metode QuEChERS AOAC 2007.01 memiliki R² sebesar 0,9888 dan 0,9858, menunjukkan linearitas yang sangat baik dengan LoD dan LoQ 0,0028 μg/kg dan 0,0094 μg/kg untuk dimethoate, serta 0,1221 μg/kg dan 0,4069 μg/kg untuk methidathion, menunjukkan sensitivitas lebih rendah. Hasil validasi menunjukkan metode QuEChERS EN 15662:2008 lebih optimal untuk analisis dimethoate dan methidathion, sementara QuEChERS AOAC 2007.01 lebih baik untuk dimethoate tetapi kurang sensitif terhadap methidathion.Kata kunci: Kentang, LC-MS/MS, QuEChERS, Residu Pestisida, Validasi MetodeABSTRACTPesticide residues in potatoes can be harmful to health if they exceed safe limits, so an accurate analysis method is needed. This study aims to validate the QuEChERS EN 15662:2008 and QuEChERS AOAC 2007.01 methods for dimethoate and methidathion residue analysis. Results showed the QuEChERS EN 15662:2008 method had a coefficient of determination (R²) of 1 and 0.9966, showing excellent linearity with LoD and LoQ of 0.000003 μg/kg and 0.000009 μg/kg for dimethoate, respectively, and 0.000003 μg/kg and 0.000008 μg/kg for methidathion, indicating high sensitivity. The QuEChERS AOAC 2007.01 method had R² of 0.9888 and 0.9858, showing excellent linearity with LoD and LoQ of 0.0028 μg/kg and 0.0094 μg/kg for dimethoate, and 0.1221 μg/kg and 0.4069 μg/kg for methidathion, showing lower sensitivity. Validation results showed that the QuEChERS EN 15662:2008 method was optimal for dimethoate and methidathion analysis, while QuEChERS AOAC 2007.01 was better for dimethoate but less sensitive for methidathion.Keywords: Potato, LC-MS/MS, QuEChERS, Pesticide Residues, Method Validation
Peningkatan Literasi Ibu Rumah Tangga sebagai Upaya Mitigasi Risiko Penggunaan Gawai Adhani, Lisa; Aliyah, Andi Nur; Kusumawati, Amora; Afifah, Muanda; Kartika, Wahyu; Setiawati, Siti
Journal Of Computer Science Contributions (JUCOSCO) Vol. 5 No. 2 (2025): Juli 2025
Publisher : Lembaga Penelitian, Pengabdian kepada Masyarakat dan Publikasi Universitas Bhayangkara Jakarta Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31599/pzamz398

Abstract

This Community Service (PKM) is conducted through counselling in the densely populated ​​Peninggaran Barat sub-district, Kebayoran Lama, South Jakarta. The purpose of this PKM is to provide input that is expected to be a solution to the concerns of mothers regarding dependence on gadgets that are detrimental to their environment in general, and children in particular, especially early childhood. Currently, dependence on gadgets is something that cannot be avoided, coupled with the rapid development of digital and information technology. From these changes, mothers are the ones who feel the impact the most. Mothers are required to be able to accompany their children in learning and synergize with teachers at school, especially for early childhood. This PKM uses the constructivism paradigm method, namely delivering material and discussions about the importance of literacy and implementing a culture of literacy through counseling The results of the PKM show that mothers are increasingly aware of the importance of literacy so that they can comfortably accompany their children to learn , use gadgets intelligently, and can provide solutions to conflicts that occur with their environment.
Natural Zeolite as Mo and MoP Catalysts Support for Catalytic Deoxygenation of Jatropha Oil Aziz, Isalmi; Farhan, Muhammad; Saridewi, Nanda; Azizah, Yulyani Nur; Muawanah, Anna; Nurbayti, Siti; Dwiatmoko, Adid Adep; Adhani, Lisa
Jurnal Kimia Valensi Jurnal Kimia VALENSI, Volume 11, No. 1, May 2025
Publisher : Department of Chemistry, Faculty of Science and Technology Syarif Hidayatullah Jakarta State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jkv.v11i1.45272

Abstract

Non-edible oil, such as Jatropha oil, is an interesting feedstock for the development of renewable diesel (green diesel). Catalytic deoxygenation using natural zeolite-supported Mo-based catalysts is a promising process for the conversion of Jatropha oil to green diesel. Mo and MoP catalysts supported on natural zeolite were synthesized by wet impregnation at a concentration of 5% (w/w). The catalysts were characterized by XRD, XRF, SAA and NH3-TPD. The catalysts were successfully synthesized with the appearance of Mo and MoP peaks on the catalyst diffractogram. XRF results also showed that Mo and P were present in the catalyst. Metal impregnation decreased the surface area and pore volume of the catalyst, but increased the average pore diameter. The NH3-TPD profile of the catalyst showed that the weak acid sites of both catalysts were larger than the strong acid sites. Based on the activity test of catalytic deoxygenation of Jatropha oil, the MoP/HZ catalyst produced a higher conversion (67%) and liquid product yield (79%) than Mo/HZ. This is associated with a larger pore diameter, so that the distribution of reactants on the catalyst surface is more optimal. However, the highest green diesel selectivity of 82% is produced by the Mo/HZ catalyst. The Mo/HZ catalyst is more oriented towards the HDO reaction, whereas the MoP/HZ catalyst is more oriented towards the DCO/DCO2 reaction.
Transformasi Limbah Minyak Jelantah Menjadi Produk Sabun-Batang di Dukung Digital-Branding Sebagai Upaya Kemandirian Ekonomi Sari, Rafika; Ramdhania, Khairunnisa Fadhilla; Sari, Ratna; Adhani, Lisa; Khalida, Rakhmi
Journal Of Computer Science Contributions (JUCOSCO) Vol. 3 No. 2 (2023): Juli 2023
Publisher : Lembaga Penelitian, Pengabdian kepada Masyarakat dan Publikasi Universitas Bhayangkara Jakarta Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31599/gv9j5e54

Abstract

Every household produces used cooking oil because the use of cooking oil is one of the primary needs of society.Waste cooking oil if not managed properly will make the environment dirty and can contaminate water and soil.To overcome this problem, innovation is needed in the management of used cooking oil by involving thecommunity so that the waste can be utilized to become recyclable products that can be reused in everyday life andeven become products of economic value that are environmentally friendly. One of the potential wastes of cookingoil is the high content of fatty acids that can be used to make soap. Soap products can be obtained from thehydrolysis reaction of fatty acids with bases (alkali). Therefore, this Community Service (PkM) activity wascarried out to increase the added value of used cooking oil by processing it into bar soap. This PkM activityincludes four stages, namely observation, information transformation, digital literacy and activity evaluation. Thetarget of this service program is housewives (IRT) in Srimukti Village, Bekasi Regency. From the results of asurvey conducted after the training activities, the participants were very satisfied with the ease of obtaininginformation about the implementation of the training, the training material in the form of processing used cookingoil waste and improving digital-branding skills which were considered very necessary for residents and the waythe instructor delivered material that was easy to understand.