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All Journal Komunikasi Fisika Indonesia CHEMICA Jurnal Teknik Kimia Jurnal Riset Kimia EduChemia: Jurnal Kimia dan Pendidikan Jurnal Litbang Industri CHEMPUBLISH JOURNAL Jurnal Pendidikan Kimia Universitas Riau Martabe : Jurnal Pengabdian Kepada Masyarakat Logista: Jurnal Ilmiah Pengabdian Kepada Masyarakat Eksakta : Berkala Ilmiah Bidang MIPA JKPK (Jurnal Kimia dan Pendidikan Kimia) Jurnal Abdimas Mahakam Jurnal Daur Lingkungan Jurnal Pengabdian dan Pemberdayaan Masyarakat Kepulauan Riau (JPPM KEPRI) Jurnal Ilmiah Ibnu Sina (JIIS): Ilmu Farmasi dan Kesehatan Jurnal Litbang Industri Journal of Fibers and Polymer Composites Literasi: Jurnal Pengabdian Masyarakat dan Inovasi Parapemikir Jurnal Ilmiah Farmasi

Intan Lestari

Chemistry, Faculty Of Science And Technology, Universitas Jambi, Jl. Jambi-Ma. Bulian KM 15 Mendalo Darat Jambi 36361, Indonesia

Author-ID : 2980223

Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences Other

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Preparation and Characterization of Magnetite Fe3O4-Activated Carbon Composite as Adsorbent Cr(VI) Ion Intan Lestari; Yonanda Ramadhanty; Leny Marlinda; Ngatijo Ngatijo
EKSAKTA: Berkala Ilmiah Bidang MIPA Vol. 22 No. 4 (2021): Eksakta : Berkala Ilmiah Bidang MIPA (E-ISSN : 2549-7464)
Publisher : Faculty of Mathematics and Natural Sciences (FMIPA), Universitas Negeri Padang, Indonesia

Metal ion such as Cr(VI) is one toxic heave metal at the trace level, thus it is necessary to remove metal ion Cr(VI) ion environmental. The absorption of Cr(VI) ions was carried out using a Fe3O4 magnetite activated carbon composite. Activated carbon prepare from palm shells (Elaeis guinensis Jack) was composite with magnetite Fe3O4 by co-precipitation method. Magnetite Fe3O4-activated carbon composite is characterized by SEM, VSM and XRD. SEM image show that Fe3O4 a deposit on the surface of activated carbon. The degree of magnetization of Fe3O4 with VSM obtained 20.99 emu/g. The pattern of XRD diffractogram show that diffraction peak at 2θ which was 6.5495o; 30.1146o; 35.3581o; 43.063o; 57.1369o; 62.5918o. The spectra of FTIR show that functional groups exist in composites such as carboxyl, carbonyl and hydroxyl groups. Adsorption of Cr(VI) ion occurs at pH 5, contact time is 30 minutes and a maximum concentration of 200 mg/L Cr(VI) with a maximum adsorption capacity was 43.4 mg/g.

The Adsorption of Mercury from Aqueous Solution on Durian (Durio zibethinus) Seed Immobilized Alginate Intan Lestari; Silfia Devi Eka Putri Putri; Martina Asti Rahayu; Diah Riski Gusti
EKSAKTA: Berkala Ilmiah Bidang MIPA Vol. 23 No. 01 (2022): Eksakta : Berkala Ilmiah Bidang MIPA (E-ISSN : 2549-7464)
Publisher : Faculty of Mathematics and Natural Sciences (FMIPA), Universitas Negeri Padang, Indonesia

The increasing pollution of toxic heavy metals in the environment is an important issue worldwide. Heavy metal ions such as mercury have attracted special attention because of their high toxicity and long half-life which increase the potential to accumulate in the food chain and cause serious damage to the environment. The potential of an adsorbent durian (Durio zibethinus) seed immobilized alginate bead was carried out and used for the adsorption of Mercury in an aqueous solution. Adsorbents were characterized by FTIR, SEM, and XRF. FTIR analysis shows the functional groups of alcohol, amine, and carboxylic acid. Scanning Electron Microscopy shows that the surface morphology of durian seed powder of granules and durian seed immobilized in Ca-alginate of like as tissue eggs in an egg box shape. XRF analysis durian seed immobilized showed that Hg(II) ion adsorbed as much as 37%. The adsorption parameter of Hg(II) ion are pH at 6 with an adsorption capacity was 1.553 mg/g, contact time at 150 minutes with adsorption capacity was 2.880 mg/g, mass 0.1 g with adsorption capacity of 2.274 mg/g, and concentration 250 mg/g with adsorption capacity of 62.067 mg/g.

The Development of Scaffolding in Inquiry-Based Learning to Improve Students' Science Process Skills in The Concept of Acid and Base Solution Syafira Tiaradipa; Intan Lestari; M. Haris Effendi; M. Rusdi
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 5, No 2 (2020): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v5i2.42420

The technique of providing learning support in a structured manner to encourage students to learn independently is called scaffolding. This consists of four types questioning, prompting, cueing, and explaining. This study aims to describe the procedure for developing scaffolding in inquiry-based learning that is beneficial to improve students' science process skills in the concept of acid and base solution. The heuristic method in the type of F2-O3-S1+S5+S6-A3 was used in this study to develop the design of the scaffolding. The data were collected using an interview and analyzed using a Delphi technique. Based on the expert validation, it was seen that the scaffolding technique designed was suitable for use. The results of the student trial also showed that the scaffolding technique was effective to be used to improve students' science process skills. It can be concluded that the scaffolding technique on inquiry-based learning was able to improve students' science process skills in the concept of acid and base solution.

Pengaruh pH dan dosis adsorben dari limbah lumpur aktif industri crumb rubber terhadap kapasitas penyerapan ion Cd(II) dan Zn(II) Salmariza Sy; Desi Kurniawati; Intan Lestari; H Harmiwati; Monik Kasman
Jurnal Litbang Industri Vol 8, No 2 (2018)
Publisher : Institution for Industrial Research and Standardization of Industry - Padang

Pernelitian dengan sistim batch telah dilakukan untuk mempelajari pengaruh perlakuan pH larutan dan dosis adsorben yang dibuat dari limbah lumpur aktif industri crumb rubber (LLA-ICR) terhadap kapasitas adsorpsi dan efisiensi penyisihan ion Cd(II) dan Zn(II) dalam larutan. Pengamatan meliputi variasi pH larutan pada range 1-7 dan dosis adsorben LLA-ICR 0,1 g - 1,0 g. Karakterisasi adsorben sebelum dan sesudah proses adsorpsi dilakukan dengan menggunakan FTIR, XRF dan SEM–EDX. Hasil penelitian menunjukkan bahwa perlakuan pH larutan dan dosis adsorben berpengaruh pada kapasitas adsorpsi dan efisiensi penyisihan ion Cd(II), dan Zn(II). pH optimum didapatkan pada pH 5. Semakin rendah dosis adsorben, maka semakin tinggi kapasitas adsorpsi namun semakin rendah efisiensi penyisihan ion Cd(II) dan Zn(II). Dosis adsorben optimum didapatkan pada 0,1g, dengan kapasitas adsorpsi dan efisiensi penyisihan ion Cd(II) > Zn(II). Kapasitas adsorpsi maksimum untuk ion Cd(II) dan Zn(II) berturut-turut 29,8 mg/g dan 10,3 mg/g. Efisiensi penyisihan maksimum intuk ion Cd(II) dan ion Zn(II) adalah 95,4% dan 87,9%. AbstractA batch system has been carried out to study the treatment effect of pH solution and adsorbent dosage derived from crumb rubber (LLA-ICR) industrial activated sludge on the adsorption capacity and removal efficiency of Cd(II) and Zn(II) ions in aqueous solution. Observations included variations in the the solution pH in the range 1-7 and the LLA-ICR adsorbent dosage of 0.1 g - 1.0 g. Characterization of the adsorbent before and after the adsorption process was carried out using FTIR, XRF, and SEM-EDX. The results showed that the treatment of the pH solution and the adsorbent dose affected the adsorption capacity and removal efficiency of Cd(II) and Zn(II) ions. The optimum pH was obtained at pH 5. The lower the adsorbent dose the higher the adsorption capacity, however the lower the efficiency removal of Cd(II) and Zn(II) ions. The optimum adsorbent dosage was obtained at 0.1 g with adsorption capacity and removal efficiency of Cd(II) > Zn(II) ions. The maximum adsorption capacity for Cd(II) and Zn(II) ions were 29.8 mg/g and 10.3 mg/g respectively. The maximum removal efficiency forCd (II) and Zn(II) ions were 95.4% and 87.9%.

Biosorpsi ion Cd+2 oleh adsorben dari daun nenas (Ananas comosus) teramobilisasi dalam Ca-alginat Nurhidayah Nurhidayah; Diah Riski Gusti; Lenny Marlinda; Intan Lestari
Jurnal Litbang Industri Vol 10, No 2 (2020)
Publisher : Institution for Industrial Research and Standardization of Industry - Padang

Daerah Tangkit Provinsi Jambi dikenal sebagai daerah penghasil nenas.. Pada musim panen buah nanas, banyak ditemukan daun nanas yang tidak dimanfaatkan .Daun nanas mengandung selulosa yang dapat digunakan sebagai biosorben untuk mengadsorpsi ion-ion logam. Biosorpsi ion Cd+2 dalam larutan dipelajari menggunakan biosorben daun nanas yang teramobilisasi dalam Ca-alginat ( BDNC) dengan metode batch pada suhu kamar. Penelitian ini bertujuan untuk menentukan kapasitas biosorpsi biosorben daun nanas teramobilisasi dalam Ca-alginat sebagai alternatif biosorben ion logam dari limbah alami. Kapasitas adsorpsi pada kondisi optimal diperoleh pada pH 6, waktu kontak selama 120 menit dan konsentrasi 300 mg/L adalah 28,56 mg/g. Mekanisme biosorpsi cenderung secara isoterm langmuir dengan nilai R2 = 0,9632, KL = 0,0527 L/mg, yang menunjukkan kekuatan ikatan molekul adsorbat dan biosorben dan Qmax = 29,762 mg/g. Biosorben daun nanas terambobilisasi Ca-alginat memiliki potensial yang bagus untuk mengadsorpsi ion logam Cd+2.

The Potential of Cellulose from the Sugar Palm (Arenga Pinnata) Seed Shell for Removal of Cr(Vi) Ions Intan Lestari; Rahma Aini Sapitri; Diah Riski Gusti; Mounir El Achaby
Journal of Fibers and Polymer Composites Vol. 1 No. 1 (2022): Journal of Fibers and Polymer Composites
Publisher : Green Engineering Society

Cr (VI) is persistent, bio-accumulative, toxic metal, unable to decompose in the environment, and accumulates in the human body through the food chain. The Cr(VI) ions can remove in aqueous solution by adsorption technique with cellulose extracted. Extract of cellulose were prepare from palm (Arenga pinnata) seed shell using acidified H2SO4 and bleaching methods. The cellulose have contained the hydroxyl (–OH) functional groups in structure, it can be an adsorbent for heavy metal ions. Cellulose was obtained with delignification and bleaching methods to break the bond between lignin and cellulose. The cellulose extracted were characterized by Fourier Transformation Infra-Red (FT-IR) and Scanning Electron Microscopy - Energy Dispersive X-Ray (SEM)-EDX. The adsorption process was conducted using pH, contact time, and concentration of Cr(VI) ions. The results showed that the optimum pH was obtained at pH 3 with an adsorption capacity is 0.88 mg/g. The optimum contact time was obtained at 120 minutes with an adsorption capacity is 0.89 mg/g. The optimum concentration was obtained at a concentration of 200 ppm with an adsorption capacity is 20.34 mg/g

Pemberdayaan Anak Panti Asuhan Muhammadiyah Jambi Intan Lestari; Edwin Permana; Indra Lasmana Tarigan; Diah Riski Gusti; Ahmad Sazali; Hamdan Maruli Siregar; M Ikrar Lagowa; Moh Nabawi; Anisa Anisa; Ardian Salsa Rusmana; Betri Yanda
Jurnal Pengabdian dan Pemberdayaan Masyarakat Kepulauan Riau (JPPM Kepri) Vol 1 No 2 (2021): Volume 1 Nomor 2, 2021
Publisher : STAIN SULTAN ABDURRAHMAN KEPRI

Panti Asuhan Muhammadiyah memiliki luas pekarangan yang terbatas, namun masih dapat dimanfaatkan untuk kegiatan budidaya pertanian khususnya budidaya sayuran dan buah-buahan sehingga dapat menghasilkan produk pangan yang bermutu baik dan segar. Kurangnya keterampilan dalam budidaya pertanian pada lahan terbatas, belum adanya keterampilan mengolah produk pangan yang bernilai ekonomis dan manajemen usaha kecil menjadi permasalahan khusus mitra dalam upaya memberdayakan anak-anak panti asuhan. salah satu cara yang dapat dilakukan untuk mengatasi masalah tersebut adalah dengan mengembangkan sistem pertanian vertikultur. Mitra akan ditransfer ilmu dan teknologi tentang budidaya sayuran secara vertikultur dengan menggunakan pupuk organik cair yang dibuat sendiri dari limbah rumah tangga yang bersifat organik dan juga pembuatan pestisida nabati. Selain itu mitra juga akan dilatih untuk mengolah sayuran menjadi produk olahan pangan bernilai ekonomis dan manajemen usaha kecil. Penerapan program ini akan mendatangkan manfaat yang besar bagi kedua mitra dimana secara ekonomi mengurangi pengeluaran untuk membeli kebutuhan akan sayuran segar dan berkualitas, dan apabila hasil melebihi kebutuhan maka dapat dijual sehingga menambah pendapatan mitra. Selain itu program ini akan meningkatkan pengetahuan dan pemahaman anak-anak panti asuhan dalam mengelola usaha kecil secara mandiri dalam rangka meningkatkan taraf hidup dan kesejahteraan penghuni panti asuhan.

Penyuluhan Pembuatan Biopori Sebagai Solusi Alternatif Meminimalisir Banjir Di Kelurahan Kenali Besar Kota Jambi Edwin Permana; Ratih Dyah Puspitasari; Ngatijo; Nelson; Faizar Farid; Diah Riski Gusti; Intan Lestari; Maharani; Moh Nabawi; Tri Siswanto
Literasi: Jurnal Pengabdian Masyarakat dan Inovasi Vol 2 No 2 (2022)
Publisher : Pengelola Jurnal Politeknik Negeri Ketapang

Jambi is one of the provinces in Sumatra which has the potential of abundant natural resources. This must be based on the principles of sustainability, harmony, and best use, as well as the utilization of natural resources in the form of land and water as one of the basic assets of national development to achieve economic and ecological balance. Human activities by building buildings or other facilities without taking into account the area of open land have resulted in reduced rainwater catchment areas. Another cause is the disposal of garbage in the flow of water bodies, so that water cannot flow smoothly which in turn results in overflow of water. Rainwater that becomes run off and garbage that is thrown carelessly, is then managed in a way so that it can be beneficial for the environment and humans themselves. Therefore, the idea of making biopore infiltration holes arose where the main ingredient was organic waste. Partner priority problems are frequent flooding during the rainy season; the surrounding community does not have special skills to be able to make biopores as infiltration holes. The activity will be carried out using structured mentoring and training methods for making biopore infiltration holes. It is hoped that from this activity Partners can make biopori, activity videos and media article.

Pineapple Leaves (Ananas Comosus) Ca-Alginate Immobilized as Adsorbent For Removal of Rhodamine B Dye Intan Lestari; Nelson Nelson; Damris M; Najlia Dinnisa Syawabilla
CHEMICA: Jurnal Teknik Kimia Vol 10, No 1 (2023): April 2023
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/chemica.v10i1.25791

Rhodamine B dye is one of the dye wastes from the textile dyeing industry. One way that can be done for dealing with pollution of the aquatic environment by the presence of this dye is adsorption. This study aims to adsorption of Rho B dye using Ca-alginate immobilized pineapple leaves. Immobilization of pineapple leaves with alginate aims to improve adsorbent performance, mechanical strength, and adsorption capacity. Pine apple leaf Ca-alginate immobilized adsorbents were characterized using Fourier Transform Infrared (FTIR), Scanning Electron Microscopy (SEM), and X-Ray Fluorescence (XRF) instruments. Ca-alginate immobilized pineapple leaf adsorbent was used adsorption of Rho B dye by studying several adsorption parameters such as the effect of pH, contact time, mass of adsorbent, stirring speed, and concentration of Rho B dye. The optimum adsorption conditions parameters were obtained at pH 3, contact time during 90 minutes, agitation speed of 150 rpm, the adsorbent mass of 0.1 gram, and Rho B concentration of 80 mg/L with a maximum adsorption capacity of 8.964 mg/g.

Peningkatan Pendapatan Keluarga melalui Kreativitas Pengolahan Sabun Cair Buah Pedada sebagai Antiseptik Uce Lestari; Intan Lestari; Mia Aina; Faizar Farid
Jurnal Abdimas Mahakam Vol. 7 No. 02 (2023): Juli
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24903/jam.v7i02.2235

Usaha Peningkatan Pendapatan Keluarga (UP2K) Melati di Kabupaten Tanjung Jabung Timur merupakan satu-satunya usaha dalam mengolah buah pedada menjadi produk olahan pangan tetapi belum ada inovasi lain terkait pembuatan produk sabun cair. Adapun kendala belum diterapkan pembuatan produk sabun cair karena masyarakat belum mengetahui cara pengolahan pembuatan sabun cair pedada serta sulitnya mendapatkan bahan baku kimia pembuatan sabun cair. Adapun tujuan kegiatan Program Pada Masyarakat (PPM) ini adalah agar masyarakat mampu meningkatkan kreativitasnya dalam mengeksplorasi mangrove jenis pedada menjadi suatu produk yang memberikan nilai tambah dan nilai ekonomi yang tinggi serta untuk meningkatkan pertumbuhan usaha dan mengembangkan daya saing produk ke luar Provinsi Jambi, mempercepat difusi teknologi dan manajemen di Perguruan Tinggi ke mitra. Sasaran peserta adalah masyarakat di Desa Teluk Majelis, Kecamatan Kuala Jambi, Kabupaten Tanjab Timur berjumlah 30 orang yang aktif pada UP2K Melati serta kegiatan ini berlangsung selama 5 bulan. Adapun hasil yang telah dicapai pada pelatihan ini adalah masyarakat mampu membuat sabun cair antiseptik pedada sendiri untuk keperluan sehari-hari serta dapat membuka peluang usaha dalam berwirausaha dengan nama branding Caseola sabun cair antiseptik buah pedada.

Co-Authors Ade Adriadi Agnes Vionita Yohana Ahmad Sazali Anisa Anisa Anisa Lastri Ardian Salsa Rusmana Arif Nurrahman Betri Yanda Damris Muhammad Desi Kurniawati Diah Riski Gusti Dika Zamri Yanni Dika Zamri Yanni Dila Oktarise Dwina Edwin Permana Faizar Farid Faizar Farid H Harmiwati Hamdan Maruli Siregar Hanum Eko Hapsari Havizur Rahman Havizur Rahman Indra Lasmana Tarigan Lenny Marlinda Leny Marlinda M Ikrar Lagowa M. Rusdi Maemonah, Maemonah Maharani Martina Asti Rahayu Mia Aina Mia Prajuwita Mia Prajuwita Mia Prajuwita Moh Nabawi Moh Nabawi Monik Kasman Mounir El Achaby Muhammad Haris Effendi Hasibuan Najlia Dinnisa Syawabilla Nelson Nelson Nelson NEVIATY PUTRI ZAMANI Ngatijo Ngatijo Ngatijo Nindita Clourisa Amaris Susanto Oki Alfernando Putri Maya Sari Putri Maya Sari Rahma Aini Sapitri Ratih Dyah Puspitasari Salmariza Sy Samsidar Samsidar Silvia Devi Eka Putri Syafira Tiaradipa Tri Siswanto Uce Lestari Wayan Angga Dewi Widy Prasetyo Yonanda Ramadhanty

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