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All Journal Sainmatika: Jurnal Sains dan Matematika CHEMISTRY PROGRESS Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Jurnal Teknologi Jurnal Ilmiah Mahasiswa FEB Jurnal Riset Kimia Jurnal Penelitian Sains SCIENCE TECH: Jurnal Ilmiah Ilmu Pengetahuan dan Teknologi JCES (Journal of Character Education Society) Chemistry Indonesian Journal of Chemical Research Martabe : Jurnal Pengabdian Kepada Masyarakat Walisongo Journal of Chemistry Jambura Journal of Chemistry Eksakta : Berkala Ilmiah Bidang MIPA Journal of Environmental Science and Sustainable Development Prosiding Seminar Teknologi Kebumian dan Kelautan (SEMITAN JAMMI These proceedings represent the work of researchers participating in The International Conference on Elementary Education (ICEE) which is being hosted by the Elementary Education Study Programme School of Postgraduate Studies, Universitas Pendidikan Jurnal Bio-Geo Material Dan Energi Experiment: Journal of Science Education JIPMukjt:Jurnal Ilmu Pendidikan Muhammadiyah Kramat Djati Jurnal Pustaka Mitra : Pusat Akses Kajian Mengabdi Terhadap Masyarakat Kolaborasi Jurnal Pengabdian Masyarakat JSEP (Journal of Science Education and Practice) JOURNAL OF CHEMICAL NATURAL RESOURCES (JCNaR) Jurnal Karya Abdi Masyarakat Journal of Education Technology Information Social Sciences and Health Jurnal Pemberdayaan: Publikasi Hasil Pengabdian kepada Masyarakat (JPM ITTC ) Journal of Economics Innovative: Journal Of Social Science Research Publish : Basic and Applied Research Publication on Communications Riset Informasi Kesehatan JPLED Paradharma: Jurnal Aplikasi IPTEK Jurnal Pustaka Dianmas Jurnal Edukasi Biologi Journal of Islamic Education Students Asian Journal of Early Childhood and Elementary Education al Kimiya : Jurnal Ilmu Kimia dan Terapan JURNAL REKAYASA KIMIA & LINGKUNGAN ijces Analit: Analytical And Environmental Chemistry
Intan Lestari
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A Mixture of Acacia Bark Extract (Acacia mangium Willd) and Potassium Iodide as A Corrosion Inhibitor in Sulfuric Acid Solution Gusti, Diah Riski; Gunawan, Anjelli Putri; Muhammad, Damris; Lestari, Intan
al Kimiya: Jurnal Ilmu Kimia dan Terapan Vol. 10 No. 2 (2023): al Kimiya: Jurnal Ilmu Kimia dan Terapan
Publisher : Department of Chemistry, Faculty of Science and Technology, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/ak.v10i2.26187

Abstract

Corrosion is a decrease in the quality of a metal material caused by a reaction with the environment. Corrosion cannot be eliminated, but corrosion can be slowed down in several ways by adding corrosion inhibitors and synergistic effects. Acacia bark extract (Acacia mangium Willd) with the addition of 0.02 M KI has the potential as a corrosion inhibitor for steel because it contains secondary metabolites, so it can provide a synergistic effect and increase the value of inhibition efficiency on steel. This research aimed to analyze the effect of a mixture of acacia bark extracts (Acacia mangium Willd) with the addition of KI on inhibition efficiency corrosion of mild steel in sulfuric acid media. The method used in this study is the method of weight loss, adsorption isotherms, and thermodynamic parameters, which were carried out by varying the concentration of acacia bark extract and the immersion temperature of the steel. To strengthen the research results, characterization was carried out using FTIR and SEM. The results showed that the corrosion rate of mild steel immersed in 0.75 M H2SO4 corrosive medium with the addition of 0.02 M KI increased with increasing immersion temperature. These results are reinforced by the results of FTIR and SEM analysis which show that there is an interaction between mild steel and acacia bark extract (Acacia mangium Willd) and KI 0.02 M. Based on the thermodynamic parameters, the resulting values of ∆Hads, ∆Gads, and ∆Sads show that the adsorption process of acacia bark extract (Acacia mangium Willd) in corrosive medium H2SO4 0.75 M with the addition of 0.02 M KI took place spontaneously, showing the type of physical adsorption, adsorbed stable, the adsorption process was exothermic and the degree of irregularity in the adsorption process. The inhibition efficiency of acacia bark extract (Acacia mangium Willd) with the addition of 0.02 M KI was highest at 60 °C with an extract concentration of 2.5 g/L of 81%. The higher the immersion temperature, the greater the resulting synergistic effect
Adsorption of Remazol Brilliant Blue Dye Using Palm Oil Shell Fly Ash HCl Activated Lestari, Intan; Azira, Ayu; Farid, Faizar
al Kimiya: Jurnal Ilmu Kimia dan Terapan Vol. 10 No. 2 (2023): al Kimiya: Jurnal Ilmu Kimia dan Terapan
Publisher : Department of Chemistry, Faculty of Science and Technology, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/ak.v10i2.29420

Abstract

Remazol Brilliant blue is an azo dye that is widely used in textile dyeing. The most appropriate handling method to be used in overcoming problems caused by textile dye waste is adsorption. Fly ash is an adsorbent that can be used to overcome this problem. Chemical activation was carried out using 1 M HCl solution. Besides that, physical activation was also carried out at 500°C for 1 hour. Research is needed to determine the optimum conditions for fly ash in dye adsorption to produce high adsorption efficiency. XRF characterization showed that palm shell fly ash was dominated by CaO of 71.064% and SiO2 of 15.734%. Characterization using FTIR shows the presence of Si-O groups in Fly ash. To analyze the surface morphology of the fly ash adsorbent, an SEM test was carried out and it was known that the surface morphology of the fly ash adsorbent after chemical and physical activation showed pore formation. Characterization using Surface Area Analyzer showed a surface area of 13.6153 m2/g. optimum absorption conditions at pH 6 with an adsorption capacity of 15.84 mg/g. optimum contact time of 60 minutes with an adsorption capacity of 15.54 mg/g. The optimum adsorbent mass is 0.5 g with an adsorption capacity of 9.54 mg/g and the optimum adsorbent concentration is at 200 ppm with an adsorption capacity of 69.08 mg/g. In this study the adsorption model used is the Freundlich isotherm. Based on the research result, it is known that fly ash is a suitable adsorbent for dye adsorption which is characterized by high color removal efficiency. Further characterization regarding the initial conditions of fly ash is needed as a comparison for fly ash after activation
Biosorption of Zn (II) Metal Ion by Ca-Alginate Immobilized Durian (Durio Zibethinus) Seed Lestari, Intan
Journal of Chemical Natural Resources Vol. 1 No. 2 (2019): Journal of Chemical Natural Resources
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (874.723 KB) | DOI: 10.32734/jcnar.v1i2.1254

Abstract

Heavy metal biosorption by alginate immobilized durian seed has been done. The immobilization of durian seed powder to Ca-alginate was able to improve biomass adsorption process, increase uptake capacity, ease separation from solution, generate and repeat biosorbent. In this experiment the effect of pH, contact time, concentration and temperature on the uptake capacity of metal ions Zn(II) in solution were studied. Biosorption was done batch methods and result was studied Langmuir and Freundlich adsorption isotherm. The adsorption of heavy metal was optimum in pH 5 with 75 mins contact time and Zn(II) ion under the concentration of 250-300 mg/l. The adsorption isotherm data was characterized using Langmuir and Freundlich equation. The equilibrium biosorption isotherm showed that alginate immobilized durian seed process has high affinities with adsorption capacities of 25.05 mg/g. All results showed that alginate immobilized durian seed is an alternative low cost biosorbent for heavy metal ion removal from aqueous solution
Application of Habituation and Singing Methods in Forming Character Religious and Moral Values in Early Childhood Lestari, Intan; Aryanti, Zusy
Journal of Islamic Education Students (JIES) Vol. 4 No. 1: May 2024
Publisher : Universitas Islam negeri Mahmud Yunus Batusangkar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31958/jies.v4i1.12287

Abstract

This research aims to describe the process of character formation with religious and moral values through habituation and singing methods. The approach used in the research is descriptive qualitative with data collection techniques of observation, interviews and documentation. Data analysis which includes data reduction, data presentation, and drawing conclusions. Testing the validity of the data uses triangulation techniques, namely technical triangulation and source triangulation. The results of the research show that the habituation and singing method allows children to directly model what they can and cannot do. So that children get used to doing something that is good and easy to remember or sticks in the child's memory and will become a habit that forms character, religious and moral values. These two methods also make learning activities more interesting, not boring and monotonous for children. 
SPATIAL SEGREGATION AND SOCIOECONOMIC DISPARITIES IN URBAN LAND USE PATTERNS Lestari, Intan; Hasibuan, Hayati Sari; Ardiwijaya, Vevin Syoviawati
Journal of Environmental Science and Sustainable Development Vol. 7, No. 2
Publisher : UI Scholars Hub

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

Abstract

Jakarta, a city that has continued to develop, is marked by the growth of population in Jakarta. This growth has been accompanied by an increasing demand for land, resulting in spatial segregation. Some areas have large expanses of land, while others are densely populated and cramped. The purpose of this study is to analyze spatial segregation in the Penjaringan and Pluit Subdistricts of North Jakarta. The research employs a qualitative descriptive analysis method, spatial analysis using Moran's and Getis-Ord Gi*, and a literature review enriched with interviews. The research findings indicate clear spatial segregation between Pluit and Penjaringan, divided into positive and negative hotspot clusters representing larger vs. very narrow land parcels. It is also shown by the clustering pattern with the 0.03 Moran index value. The contrast in segregation depicts demographic and socioeconomic characteristics between the two areas. This pattern is also similar to the land value zones, where Penjaringan has lower land values than Pluit. These findings underscore the pressing need for inclusive urban planning strategies to address spatial disparities. Policies that promote shared public spaces, equitable infrastructure distribution, and mixed-use development could help bridge the socioeconomic divide. By integrating spatial equity into planning practices, urban development can foster greater social cohesion and ensure that the benefits of growth are more evenly distributed across all areas. This approach is vital for creating sustainable and inclusive urban environments.
PENYERAPAN ION LOGAM Cu(II) MENGGUNAKAN ECENG GONDOK (Eichhornia crassipes) SECARA FITOREMEDIASI Lestari, Intan; Ayu, Shinta Putri; Ngatijo, Ngatijo
Analit : Analytical and Environmental Chemistry Vol. 6, No. 01 April (2021) Analit : Analytical and Environmental Chemistry
Publisher : Jurusan Kimia FMIPA Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/aec.v6i1.2021.p46-55

Abstract

Fitoremediasi adalah penggunaan tanaman dan proses tanaman untuk menghilangkan, menurunkan atau membuat bahan berbahaya tidak berbahaya bahan yang ada di tanah atau air tanah. Fitoremediasi dapat digunakan untuk stabilisasi polutan, ekstraksi, degradasi atau penguapan. Penelitian ini bertujuan untuk penyerapan ion logam Cu(II) menggunakan Eceng Gondok secara fitoremediasi. Parameter penyerapan yang dipelajari adalah variasi pH, konsentrasi ion logam Cu(II), waktu kontak tanaman di dalam media. Hasil penelitian menunjukkan bahwa variasi kondisi pH larutan memberikan penyerapan optimum pada pH 4 dengan efisiensi adsorpsi 98,6%. Sedangkan variasi konsentrasi larutan memberikan penyerapan optimum pada konsentrasi 500 ppm dengan efisiensi adsorpsi 99,392%. Lama waktu kontak memberikan penyerapan optimum pada hari ke-5 dengan efisiensi adsorpsi 99,62%. Berdasarkan data karakterisasi FTIR menunjukan bahwa Eceng Gondok memiliki gugus fungsi hidroksil, karbonil, karboksil, dan amina yang berfungsi sebagai gugus aktif untuk proses adsorpsi ion logam Cu(II) oleh Eceng Gondok (Eichornia crassipes).http://dx.doi.org/10.23960/aec.v6.i1.2021.p46-55 
Pemberdayaan Masyarakat Dalam Rangka Peningkatan Ketahanan Pangan Di RT 14 Puri Masurai 1, MENDALO INDAH, KABUPATEN MUARO JAMBI Asra, Revis; Suprayogi, Dawam; Permana, Edwin; Lestari, Intan; A, Muhammad Razi
Jurnal Pemberdayaan: Publikasi Hasil Pengabdian Kepada Masyarakat Vol. 4 No. 2 (2025): Juli-Desember
Publisher : CV. ITTC INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47233/jpmittc.v4i2.3848

Abstract

The RT 12 and RT 14 areas of Puri Masurai 1 are mostly occupied by boarding students and residents with neglected yards and low environmental awareness. However, these areas hold great potential for local food security through urban farming. This program aims to increase community awareness and participation in utilizing home yards, support family food security through fast-growing crops, create a clean and green environment, and promote a planting culture among residents and students. Main issues include unproductive yards, poor waste management, and lack of training. The solutions include providing horticultural seeds, verticulture training, and collective community activities. Implemented from June to October 2025, the program involved surveys, preparation of learning media, socialization, and field practice. The results show improved cooperation among residents, successful cultivation of vegetables and fruits, enhanced farming skills, and a cleaner, greener, and more productive environment that helps reduce household expenses.
Peran Palang Merah Indonesia Kampus Dalam Penanganan Kedaruratan Kemanusiaan Di Perguruan Tinggi Astri, Dwinayla; Lestari, Intan; Sipahutar, Cindy; Romadani, Chairika; Anugrah, Kiki; Wasiyem, Wasiyem
Innovative: Journal Of Social Science Research Vol. 6 No. 1 (2026): Innovative: Journal Of Social Science Research
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/innovative.v6i1.21400

Abstract

Palang Merah Indonesia merupakan organisasi kemanusiaan yang memiliki peran penting dalam penanganan kedaruratan kemanusiaan, termasuk di lingkungan perguruan tinggi. Keberadaan Palang Merah Indonesia Kampus menjadi wadah pengembangan kepedulian sosial dan kesiapsiagaan sivitas akademika melalui berbagai kegiatan kemanusiaan, seperti donor darah, pelatihan pertolongan pertama, simulasi kebencanaan, dan edukasi kesehatan. Penelitian ini bertujuan untuk menganalisis peran Palang Merah Indonesia Kampus dalam penanganan kedaruratan kemanusiaan di perguruan tinggi. Penelitian ini menggunakan metode deskriptif kualitatif dengan teknik pengumpulan data melalui observasi, wawancara, dan dokumentasi. Informan penelitian terdiri atas pembina dan anggota Palang Merah Indonesia Kampus. Hasil penelitian menunjukkan bahwa Palang Merah Indonesia Kampus berperan dalam meningkatkan kesiapsiagaan dan kepedulian sosial melalui pelaksanaan program kemanusiaan yang berkelanjutan. Namun, pelaksanaan kegiatan masih menghadapi kendala berupa keterbatasan sumber daya, rendahnya partisipasi sivitas akademika, serta belum optimalnya dukungan institusi. Oleh karena itu, diperlukan penguatan peran dan sinergi antara organisasi kemanusiaan kampus dan perguruan tinggi agar penanganan kedaruratan kemanusiaan dapat berjalan secara lebih efektif dan berkelanjutan.
Green Household Initiative: Pengenalan Ekonomi Sirkuler dalam Pengelolaan Limbah Rumah Tangga Dasmaran, Verliani; Permatasari, Novelia Kiki; Sutihat, Eva; Masitoh, Masitoh; Nuraeni, Rini; Al Birun, Muhamad Syehan; Umamah, Neneng; Lestari, Intan
Jurnal Pustaka Dianmas Vol 5, No 2 (2025)
Publisher : Universitas Prof. Dr. Moestopo (Beragama)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32509/dianmas.v5i2.6505

Abstract

The increasing generation of household waste in Indonesia, including in Teluklada Village, Sobang District, Pandeglang Regency, poses a serious threat to environmental quality and public health. Low environmental literacy, limited understanding of waste separation, and the prevalence of open burning and mixed waste disposal highlight the urgent need for community-based environmental education. In response to this issue, the Green Household Initiative Community Service Program (PKM) was implemented to enhance public understanding of the circular economy as an alternative approach to household waste management. The methods included field observation, preparation of educational materials, delivery of socialization through presentations and interactive discussions, and basic evaluation of participants’ comprehension. The results indicate a notable improvement in participants’ knowledge of the 3R principles (reduce, reuse, recycle), a positive shift in perceptions regarding the value of waste, and increased awareness of the importance of waste sorting in daily activities. Overall, this program plays a critical role in addressing the urgent need for environmental education and serves as an initial step in strengthening community understanding of circular economy–based waste management.
METODE KROMATOGRAFI GAS UNTUK ANALISIS PESTISIDA ORGANOPOSPAT Lestari, Intan
Jurnal Sains dan Matematika Vol. 1 No. 1 (2020): Jurnal Sain dan Matematika
Publisher : PMIPA FKIP UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.1234/sainmatika.v3i1.1614

Abstract

Dalam bidang pertanian pestisida merupakan salah satu pilihan dalam pembasmian hama dan penyakit tanaman, tapi juga mempunyai dampak terhadap lingkungan. Beberapa metode telah digunakan untuk penentuan residu pestisida dalam air salah satunya dengan menggunakan kromatografi gas. Sampel diambil di daerah pertanian kota Jambi yang menggunakan pestisida dengan  nama bahan aktif fention dan diazonin. Sampel diekstrak  dengan pelarut heksan dan hasil ekstrak ditentukan dengan GC. Penentuan kondisi optimum pengukuran dilakukan sebelum penentuan konsentrasi sample. Hasil pengukuran menunjukkan waktu retensi 6,704 menit untuk diazonin dan 9,265 menit untuk fention. Standar deviasi relative  4,703% untuk diazonin dan  2,431%  untuk fention. Ketepatan ;hasil metoda dicobakan terhadap sample dan didapatkan kadar pestisida organopospat antara 0,0160 ppm sampai 0,0302 pm dengan harga rekoveri rata-rata 98,35 %.   Kata Kunci: Kromatografi gas, Pestisida organopospat, fention dan diazonin.
Co-Authors -, Rahmi - Abdillah Abdillah Ade Adriadi Agrina Lisma Agrina, Agrina Agustina, Elsi Al Birun, Muhamad Syehan Alben Ambarita Alfernando, Oki Alkatiri, Jufri Amin, Sahrul Anna Rakhmawati Anugrah, Kiki Ardiwijaya, Vevin Syoviawati Ariana, Febi Arif, M. Ridwan Asep Rohman Astri, Dwinayla Ayu, Shinta Putri Azira, Ayu Azril Damris Muhammad Dawam Suprayogi Denny Prabawa, Aditya Desy Kurniawati Dhian Eka Wijaya Diah Riski Gusti Edwin Permana Eko Prasetyo Elisma Elisma Erda, Erda Eva Sutihat Faizar Farid Febriana - Sabrian Fina Audilla, Yessiska Grasella, Lucintania Gunawan, Anjelli Putri Gusti, Diah Rizki Hayati Sari Hasibuan Hery Widijanto Hidayat, Dara Shalsa Billah Hidayat, Vikri Idat Muqodas Indra Lasmana Tarigan Indra Lesmana Indriyani Indriyani Iqbal, Anwar Jalius Jalius Kartiko, Frananda Rizki Kastera, Viven Khatoha, Trisqa Laila Lasmana Tarigan, Indra Lenny Marlinda Mahraja, Mahra Martina Asti Rahayu Masitoh Masitoh Mastutik, Diah Maulana, Rico Gewana Resdy Maya Lestari, Maya Mia Aina Muhaimin, . Muhammad Damris Muhammad Razi A Munifilia Ekasari Naswir, Muhammad Natadiwijaya, Ismail Fikri Natalia, Desfaur Nelson, Nelson Ngatijo Ngatijo Nilasari, Aprillia Niswah, Coirun Novelia Kiki Permatasari Nuraeni, Rini Nuralam, Deni Nurjamil, Dimas Setya Nurkholik , Dedeng Nurul, Ramdan Ocktavia, Tyzeka Dwi Oktarise Dwina, Dila Pernadi, Niza Lian Pradina, Armitha Dea Prasetio, Muhamad Reza Prasetyo, Widy Puji Rahayu Putra, Adrisma Juanda Qisthi, Zummul Rahmadhani, Syarima Rahmi Rahmi Rani Ardesi Pratiwi Revis Asra Reza Pahlevi Ginting Rizalzi, Dewa Romadani, Chairika Rustikah, Ika Sari, Avellyn Shintya Satria, Rinaldi Sipahutar, Cindy Siti Rachmah Sofiani solihah, Nabilatus Sukor, Mohd Zaki Susanto, Nindita Clourisa A Sutrisno, Sutrisno Syahid, Alwi Tarmizi, Fadhilah tekmauk, Jitro valerius Tita Rohita Uce Lestari Umamah, Neneng Verliani Dasmaran Wahyudi, Abdi Walidatur Rofiah, Yuliana Wardhana, Alexander Tantra Wasiyem, Wasiyem Wawan Setiawan Wibowo, Yudha Gusti Yohana, Agnes Vionita Zusy Aryanti