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All Journal CHEDS: Journal of Chemistry, Education, and Science JURNAL KIMIA SAINTEK DAN PENDIDIKAN
Vivi Purwandari
Universitas Sari Mutiara Indonesia
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Materials Science & Nanotechnology

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SINTESIS DAN KARAKTERISASI ARANG AKTIF DARI CANGKANG KEMIRI SEBAGAI ADSORBEN UNTUK MENURUNKAN KADAR AMONIA (NH3) TOTAL SUSPENDED SOLID (TSS) DAN POTENTIAL HYDROGEN (PH) PADA LIMBAH CAIR INDUSTRI TAHU Hestina Hestina; Erdiana Gultom; Vivi Purwandari; Yohandres Sitio
CHEDS: Journal of Chemistry, Education, and Science Vol 7, No 1 (2023)
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/cheds.v7i1.7040

Abstract

Research has prepared and characterized activated charcoal from candlenut shells as an adsorbent to reduce ammonia levels, total suspended solids, and hydrogen potential in tofu industrial wastewater. The stages of this research include the Production of activated charcoal from candlenut shells with the combustion process at a temperature of 550 0C for 2 hours in the furnace, achieved sieved using a 100 mesh sieve and then chemically activated by soaking the charcoal in phosphoric acid (H3PO4) 4M solution for 24 hours Furthermore, activated charcoal is characterized based on SNI No. 06-2730-1995 which cover moisture content, ash content, volatile matter content, bound carbon content and iodine absorption and based on this research obtained that moisture content (5,56%), ash content (4,96%), volatile matter content (3,2%), bound carbon content (91,84%),) and iodine absorption (224,94mg/g). Before adding charcoal activated in tofu industrial wastewater,  Ammonia levels were 174 mg/L,  total suspended solids 23 mg/L, and hydrogen potential  5. But after adding charcoal-activated Ammonia levels of 7,85 mg/L,  total suspended solids 165 mg/L, and hydrogen potential  6,5. Based on the data ob, trained activated charcoal from candlenut shells can use as an adsorbent to reduce ammonia levels, total suspended solids, and hydrogen potential in tofu industrial wastewater by environmental regulations.
PEMBUATAN PENYERAP GAS BUANG KENDARAAN BERMOTOR BERBASIS LIMBAH PADAT KELAPA SAWIT Abdillah Abdillah; Gimelliya Saragih; Muhammad Zaim Akbari; Vivi Purwandari
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 Nelson Silitonga; Nurliana Tarigan; Gimelliya Saragih; Vivi Purwandari; Ahmad Zukhruf Akbari
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 Liver Zai; Estetika Niat Iman Halawa; Malemta Tarigan; Erdiana Gultom; Vivi Purwandari; Ong Amanda Jiamin
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 Winta Lase; Vivi Purwandari; Adiansyah; Malemta Tarigan; Zou Yiming
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.
Co-Authors Abdillah Abdillah Adiansyah Ahmad Zukhruf Akbari Erdiana Gultom Estetika Niat Iman Halawa Gimelliya Saragih Hestina Hestina Liver Zai Malemta Tarigan Muhammad Zaim Akbari Nelson Silitonga Nurliana Tarigan Ong Amanda Jiamin Winta Lase Yohandres Sitio Zou Yiming