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All Journal Martabe : Jurnal Pengabdian Kepada Masyarakat Jurnal Farmanesia JURNAL KIMIA SAINTEK DAN PENDIDIKAN Jurnal ABDIMAS MUTIARA
Purwandari, Vivi
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PENGOLAHAN LIMBAH KULIT KAKAO DAN KEMIRI PADA PEMBUATAN BIOPELET SEBAGAI BAHAN BAKAR ALTERNATIF Purwandari, Vivi; Harahap, Mahyuni; Zai, Liver; Arya Mubarakh, Muhammad
JURNAL KIMIA SAINTEK DAN PENDIDIKAN Vol. 6 No. 2 (2022): Jurnal Kimia Saintek dan Pendidikan
Publisher : Program Studi Kimia - Universitas Sari Mutiara Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51544/kimia.v6i2.3492

Abstract

The amount of fuel reserves were getting depleted and has created problems with the occurrence of a fuel crisis, which has resulted in higher prices and the economy of the community has been down. Biomass is a renewable alternative fuel source but still has weaknesses, like high water content, low calorific value and low density and the combustion process requires high temperatures. To overcome this problem, biomass can be processed into biopellets with the aim of increasing its density and increasing the quality of combustion. The research was about the processing of cocoa and candlenut shell waste as an alternative fuel in the manufacture of biopellets using tapioca adhesive. The stages of this research include the preparation of raw materials for cocoa shells and candlenut shells ground to a size of 60 mesh and then added with various adhesives of 5%, 10% and 15%, then printed manually and dried in an oven with a temperature of 60oC for ±3 hours. Furthermore, the biopellets were characterized based on the provisions of SNI 8021:2014 which included density, moisture content, ash content, volatile matter, fixed carbon, calorific value with the most optimum values, respectively, 1.02 g/cm3, 3.14%, 6 ,25%, 64.56%, 26.05% and 4145.6 cal/g. Biopellets were also tested for effectiveness such as fracture strength and combustion rates with values of 0.14% and 0.11 g/min, respectively. Biopellet with the best quality was found in the type of biopellet with a mixture of raw materials 2:1 and using 10% tapioca adhesive.
PEMBUATAN PENYERAP GAS BUANG KENDARAAN BERMOTOR BERBASIS LIMBAH PADAT KELAPA SAWIT Abdillah, Abdillah; Saragih, Gimelliya; Akbari, Muhammad Zaim; Purwandari, Vivi
JURNAL KIMIA SAINTEK DAN PENDIDIKAN Vol. 7 No. 1 (2023): JURNAL KIMIA SAINTEK DAN PENDIDIKAN
Publisher : Program Studi Kimia - Universitas Sari Mutiara Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51544/kimia.v7i1.3904

Abstract

Polusi udara merupakan masalah yang dihadapi di masa sekarang, kendaraan bermotor menyumbang 70% Polusi udara yang ada di Indonesia. Membran Keramik sebagai penyerap emisi karbon dengan nanokarbon sebagai filler digunakan untuk menyerap gas buang yang dihasilkan oleh kendaraan bermotor. Penelitian ini bertujuan untuk membantu pemerintah dalam mengatasi polusi udara dengan memanfaatkan limbah padat kelapa sawit. Tanah liat sebagai matriks di aktivasi menggunakan KOH, serbuk pelepah sawit sebagai pembentuk pori dan menggunakan nanokarbon sebagai filler yang berasal dari cangkang sawit yang dibuat melalui metode hidrotermal dengan 180oC selama 6 jam dengan pelarut air dengan perbandingan 80:15:5. Campuran di hotpress dengan suhu 120oC dilanjutkan dengan proses furnance dengan suhu 600oC selama 1 jam. menghasilkan kekuatan tarik sebesar 6.475 Mpa. Hasil analisa FTIR membran keramik berpori menunjukan adanya gugus fungsi bahan baku pembentuk membran keramik dan dari hasil analisa DSC membran keramik menunjukan bahwa kemampuan termal penggunaan membran keramik dapat digunakan dibawah temperatur 470oC. Hasil uji data filtrasi (emisi gas buang) pada keramik berpori yang dihasilkan dapat di lihat CO terserap 3,20%, CO2 terserap 5.6% dan HC terserap 418 ppm.
PEMBUATAN NANOKARBON DARI LIMBAH PADAT KELAPA SAWIT MENGGUNAKAN METODE HIDROTERMAL Silitonga, Nelson; Tarigan, Nurliana; Saragih, Gimelliya; Purwandari, Vivi; Akbari, Ahmad Zukhruf
JURNAL KIMIA SAINTEK DAN PENDIDIKAN Vol. 7 No. 1 (2023): JURNAL KIMIA SAINTEK DAN PENDIDIKAN
Publisher : Program Studi Kimia - Universitas Sari Mutiara Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51544/kimia.v7i1.3906

Abstract

Meningkatnya kesadaran tentang polusi telah menyebabkan pengembangan solusi untuk masalah lingkungan dengan memaksimalkan pemanfaatan biomassa yang berlimpah untuk pembuatan nanokarbon. Penelitian ini bertujuan untuk memanfaatkan limbah padat kelapa sawit menjadi material yang memiliki nilai guna dan nilai ekonomis menjadi nanokarbon dan material yang berteknologi tinggi. nanokarbon yang berasal dari pelepah dan cangkang sawit yang dibuat melalui metode hidrotermal dengan 180oC selama 2 jam dengan pelarut air dan dilakukan metode ultrasonikasi selama 15 menit. Nanokarbon yang didapat  dikarakterisasi menggunakan Fourier Tranform Infrared (FTIR), X-Ray Difraktometer (XRD), dan Particle Size Analyzer (PSA). Dari hasil analisa gugus fungsi menggunakan FTIR telah menunjukan gugus fungsi nanokarbon dan ditemukan perubahan ukuran partikel yang sangat signifikan dari proses sebelum dan sesudah proses hidrotermal, yaitu 895,2 nm menjadi 334,2 nm. Peningkatan volume pori dan luas permukaan partikel masing-masing sebesar 3,5% dan 63% setelah proses hidrotermal.
PROCESSING OF SAWDOW WASTE OF MAHONI AND JATI WOOD AS A MATERIAL GYPSUM CEILING FILLERS WITH POLIVINYL ADHESIVE ALCOHOL Zai, Liver; Halawa, Estetika Niat Iman; Tarigan, Malemta; Gultom, Erdiana; Purwandari, Vivi; Jiamin, Ong Amanda
JURNAL KIMIA SAINTEK DAN PENDIDIKAN Vol. 7 No. 1 (2023): JURNAL KIMIA SAINTEK DAN PENDIDIKAN
Publisher : Program Studi Kimia - Universitas Sari Mutiara Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51544/kimia.v7i1.3986

Abstract

Along with the increase in population, the need for building materials, namely wood, will increase, thus triggering rampant illegal logging, which will cause floods, landslides, and global warming. One of the efforts made to reduce the use of wood is to make gypsum composite boards. This study aims to utilize mahogany wood waste and jati wood powder as gypsum board fillers. Research has been carried out on processing waste sawdust from mahogany and jati wood as a filling material for making gypsum ceilings with polyvinyl alcohol adhesive by mixing and compacting using a hot compressor at 70o C. Good quality with a density value of 0.82 g /cm3 and absorption capacity of 38.4% complied with SNI 03-2105-2006. Mechanical properties with variations in impact strength (95:5:10) of 19.014 J/m2, flexural strength of variation (95:5) of 395, 446 N/m2, and fracture strength of variation (95:5:5) of 1.7758 N/m2. A Gypsum board was obtained, which did not meet SNI 03-6384-2000 on the gypsum board specification for the results of testing for flexural strength and fracture strength.
PENGARUH KONSENTRASI PEREKAT AMILUM TERHADAP KARAKTERISTIK BRIKET BIOARANG BERASAL DARI HASIL PIROLISIS LIMBAH PADAT INDUSTRI KELAPA Lase, Winta; Purwandari, Vivi; Adiansyah; Tarigan, Malemta; Yiming, Zou
JURNAL KIMIA SAINTEK DAN PENDIDIKAN Vol. 7 No. 1 (2023): JURNAL KIMIA SAINTEK DAN PENDIDIKAN
Publisher : Program Studi Kimia - Universitas Sari Mutiara Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51544/kimia.v7i1.4448

Abstract

This research is the manufacture of bio-charcoal briquettes derived from the results of pyrolysis of coconut industrial solid waste as well as an analysis of the effect of adhesive concentration on the research results of bio-charcoal briquettes. The purpose of this study was to determine the process of making bio-charcoal briquettes, the quality of the bio-charcoal briquettes and to determine the effect of the adhesive concentration used on the bio-charcoal briquettes as a result of the research. Research has been carried out on processing coconut shell and coconut coir waste with starch adhesive materials using the mixing and printing method with PVC pipes and drying in an oven with a temperature of 90–100 ºC ± 3 hours. Furthermore, the bio-charcoal briquettes were characterized based on the provisions of SNI No.01/6235/2000 which included moisture content, ash content, volatile matter content, bound carbon content, density, specific gravity, burning rate, compressive strength, calorific value with optimum values respectively 11 .46%, 3.81%, 17.60%, 77.26%, 1.2 gr/cm 3 , 1.2× 10 -6 Kg/m 2 .s 2 , 0.108 g/min, 80.680 % , 6,200 cal/g. Bio-charcoal briquettes were also tested for DTA and TGA for bio-charcoal briquettes using adhesive and without adhesive with successive values of -223.20 cal/g, -22.615%, -206.20 cal/g and -29.075%. The best quality bio-charcoal briquettes are found in briquettes with a mixture of 90% charcoal and 10% starch adhesive.
IN SILICO STUDY OF ELASTASE ENZYME WITH NAPHTHOQUINONE DERIVATIVES AS LIGAND Farhan, Muhammad Rafiq; Alwi, Ratna Surya; Harahap, Mahyuni; Purwandari, Vivi
JURNAL KIMIA SAINTEK DAN PENDIDIKAN Vol. 7 No. 2 (2023): JURNAL KIMIA SAINTEK DAN PENDIDIKAN
Publisher : Program Studi Kimia - Universitas Sari Mutiara Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51544/kimia.v7i2.4677

Abstract

We simulated 17 molecules classified as Naphthoquinones derivatives with the Enzyme Elastase to observe data regarding energies produced after bonding. These 17 Molecules were Eleutherin, Isoeleutherin, Elacanacin, Eleutherinone, Eleutherol A, Eleutherol B, Eleutherol C, Eleuthinones B, Eleuthinones C, Eleutherine A, Eleutherine B, Eleutherine C, Eleutherine D, Eleutherine E, Eleutherine F, Eleutherine G, Eleucanainones A. To prepare the ligand and protein for docking, we used the Discovery Studio application. For the molecular docking itself, we used the Pyrx application. Regarding interpreting the result, first, we chose the lowest rmsd/ub or rmsd/lb, and then we analyzed the energy result in which the lowest rmsd occurred. The docking results data indicated that all the ligand-enzyme bonding had negative binding affinity energy, but Eleucanainones A produced the lowest energy (Binding Affinity -7.7, mode 1, Rmsd/ub 1.787, Rmsd/lb 3.54), meaning it bound most easily with the enzyme Elastase. This study was only an initial or foundational step and further studies were highly needed for the development of the correlation between the ligands and the enzyme mentioned above.
THE EFFECT OF MOLECULAR WEIGHT ON THE THERMAL STABILITY OF CELLULOSE ACETATE Zebua, Suniati; Zagoto, Nasrani; Halawa, Advent Tri Yanti; Zai, Liver Iman Putra; Purwandari, Vivi; Harahap, Mahyuni
JURNAL KIMIA SAINTEK DAN PENDIDIKAN Vol. 8 No. 1 (2024): JURNAL KIMIA SAINTEK DAN PENDIDIKAN
Publisher : Program Studi Kimia - Universitas Sari Mutiara Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51544/kimia.v8i1.5017

Abstract

An organic ester with good mechanical characteristics (such as a high Young's modulus and tensile strength) is cellulose acetate (CA), a biobased polymer. Over the past few decades, the thermal characteristics of CA have been extensively studied. This study looked at the morphology and thermal characteristics of plasticized CA, particularly its mass loss according to thermogravimetric analysis. The analysis and comparison of the overall thermal behavior with theoretical models was done. The results of this study may have particular significance as certain polymers have a recognized dependence on β-relaxation for their mechanical attributes; this may also apply to CA.
PEMBERDAYAAN MASYARAKAT OLAH LIMBAH ASAP CAIR INDUSTRI SANTAN KELAPA SEBAGAI BIOPESTISIDA DENGAN DESTILASI SEDERHANA Harahap, Mahyuni; Hestina, Hestina; Purwandari, Vivi; Santriani Drudu, Susi; Putra Hia, Sowua
Martabe : Jurnal Pengabdian Kepada Masyarakat Vol 7, No 12 (2024): MARTABE : JURNAL PENGABDIAN MASYARAKAT
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jpm.v7i12.5011-5016

Abstract

Limbah asap cair industri santan kelapa merupakan limbah yang memiliki nilai tinggi dan perlu dimanfaatkan. Senyawa yang terkandung dalam asap cair bisa digunakan sebagai biopestisida secara alat destilasi sederhana. Dalam kegiatan pengabdian ini, mitra yang dilibatkan adalah Ibu-Ibu PKK Desa Sigara Gara yang tergabung dalam kelompok Dapur Emak berusia 30 – 50 tahun. Tahapan kegiatan ini terdiri atas tiga, yaitu tahapan persiapan, pelaksanaan, dan evaluasi. Seperangkat alat destilasi sederhana telah berhasil dirangkai. Asap cair sebelum didestilasi berwarna hitam pekat berubah menjadi warna bening setelah didestilasi. Kelompok yang mengikuti kegiatan pengabdian merasakan manfaat yang positif dimana dapat memanfaatkan limbah asap cair sebagai biopestisida yang ramah lingkungan dan ekonomis.
PEMBERDAYAAN MASYARAKAT DALAM PENGELOLAAN SAMPAH BIOMASSA BERKELANJUTAN DENGAN TEKNOLOGI PIROLISIS Hestiana, Hestiana; Purwandari, Vivi; Harahap, Mahyuni; Zai, Liver; Damayanti, Rizki; Bawamenewi, Langsar; Zaim Akbari, Muhammad
Martabe : Jurnal Pengabdian Kepada Masyarakat Vol 8, No 2 (2025): MARTABE : JURNAL PENGABDIAN KEPADA MASYARAKAT
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jpm.v8i2.643-647

Abstract

Sebagian besar penduduk Nagori Serapuh adalah Bertani dan berladang memiliki potensi besar dalam menghasilkan limbah biomassa baik itu dari rumah tangga maupun limbah biomasa hasil panen. Pengolahan sampah biomasa yang efektif dan berkelajutan  serta ramah lingkungan dengan teknologi pirolisis ini sangat dibutuhkan masyarakat Nagori Serapuh ini. Target dan indikator capaian bagi desa binaan Nagori Serapuh  adalah penurunan volume sampah yang dibuang dan dibakar dengan cara yang salah, menandakan bahwa masyarakat mengadopsi praktek pengelolaan sampah yang lebih efektif dengan teknologi pirolisis. Peningkatan kesejahteraan masyarkat secara ekonomi dan lingkungan juga menjadi indikator lain yang dapat dilihat dari penghematan biaya, pemanfaatan hasil pirolisis, pemanfaatan sumber daya yang lebih efisien dan ramah lingkungan.
UTILIZATION OF LIGNIN ISOLATION RESULTS FROM OIL PALM FRONDS AS ADHESIVE IN COMPOSITE BOARD PREPARATION Silitonga, Nelson; Kartika; Abdillah; Syarifah; Keliat, Aisyah Br.; Arif, Ali; Purwandari, Vivi; Saragih, Gimelliya
JURNAL KIMIA SAINTEK DAN PENDIDIKAN Vol. 8 No. 2 (2024): JURNAL KIMIA SAINTEK DAN PENDIDIKAN
Publisher : Program Studi Kimia - Universitas Sari Mutiara Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51544/kimia.v8i2.5830

Abstract

The decreasing availability of adhesive raw materials and the emergence of formaldehyde emissions from gluing material products to the environment, require a substitute material in the manufacture. Lignin from oil palm fronds has the potential as an alternative environmentally friendly adhesive in the composite board industry and offers a sustainable agricultural waste management solution because of its abundant availability. This study is a laboratory experiment, the utilization of lignin from oil palm fronds, which will later be applied as a composite wood adhesive. From the results of the study obtained. copolymerization with resorcinol and formaldehyde produces lignin resorcinol formaldehyde (LRF) resin which is tested for adhesive appearance, pH/acidity, specific gravity, and viscosity of LRF adhesive at room temperature and residual evaporation levels at 105 oC. Product characterization includes testing the physical and mechanical properties of composite boards including Fracture Strength (Modulus of Rufture) and Flexural Strength or Modulus of Elasticity (MOE) from the test results of this lignin-based adhesive which meets the specified requirements.
Co-Authors Abdillah Abdillah Abdillah Adiansyah Adriaman Laia Advent Tri Yanti Halawa Akbari, Ahmad Zukhruf Akbari, Muhammad Zaim Alwi, Ratna Surya Amila Amila, Amila Anaria Laia Arif, Ali Arya Mubarakh, Muhammad Bawamenewi, Langsar Benar Siroma Hulu Dicky Yuswardi Wiratma Dyna Grace Romatua Aruan Edison Halawa Eka Margareta Sinaga Erdiana Gultom Esther Wijayanti Harefa Faerizisokhi Telambanua Farhan, Muhammad Rafiq Gultom, Erdiana Halawa, Advent Tri Yanti Halawa, Estetika Niat Iman Harahap*, Mahyuni Harahap, Mahyuni Helen Anjelina Simanjuntak Hestiana, Hestiana Hestina Hestina, Hestina Hutabarat, Mawarni Iman Susanti Tafanao Imania Waruwu Indra Surya, Indra Jhoni Alman Tafonao Jhonialman Jhonialman Tafonao Jiamin, Ong Amanda Kardiadinata, Wening Galih Sanubari Kartika Keliat, Aisyah Br. Khodijah, Ani Kurniawati Hulu Lase, Winta Liver Iman Putra Zai Mahyuni Mahyuni Harahap Malemta Tarigan Maniur Arianto Siahaan Marpaung, Jon Kenedy Nasrani Zagoto Nasution, Dinda Juita Nelson Simanjuntak Oktafiani Harefa Putra Hia, Sowua Rizki Damayanti, Rizki Santriani Drudu, Susi Saragih, Gimelliya Sianipar, Artha Yuliana Silitonga, Maringan Silitonga, Nelson Simarmata, Yettrie Sinaga, Mia Endang Sari Siti Maimunah Siti Nurbaya Sitohang, Isra Kristina Sofwan, Ahmad Gazali Sowua Putra Hia Sowua Putra Laia Suharyanisa Suniwati Zebua Suryanti Laia Susi Santriani Waruwu Syarifah Tarigan, Malemta Tarigan, Nurliana Thaib, Cut Masyithah Todo Manaek Nababan Veronica, Wantri Yiming, Zou Yosy Cinthya Eriwaty Silalahi Zagoto, Nasrani Zai, Liver Zai, Liver Iman Putra Zaim Akbari, Muhammad Zebua, Suniati Zuhairiah Nasution, Zuhairiah