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All Journal Jurnal Teknik Kimia USU ABDI SABHA (Jurnal Pengabdian kepada Masyarakat) Jurnal Teknik Kimia USU
Iriany
Departemen Teknik Kimia, Fakultas Teknik Universitas Sumatera Utara
Religion Arts Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Education Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Social Sciences

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BIOBRIQUETTE PRODUCTION FROM PALM FRONDS AND SHELLS: EFFECT OF MATERIAL COMPOSITION AND PARTICLE SIZE Okta Bani; Iriany; Taslim; Cici Novita Sari; Cindy Carnella
Jurnal Teknik Kimia USU Vol. 7 No. 1 (2018): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (337.959 KB) | DOI: 10.32734/jtk.v7i1.1632

Abstract

Briquettes are solid fuels from organic materials with high calorific values ​​and burn duration. The composition and particle size of the raw material may affect briquette quality. This study aimed to evaluate the effect of composition and particle size on calorific value and characteristics of the resulting briquettes. In this study, briquettes were made using palm oil fronds and shells at mass ratio of 1:2, 1:4, 1:6, 1:8 and particle size of not-dertemined, 50, 70, and 100 mesh. First, raw material was carbonized at 450°C for 30 minutes then added to 20%wt. starch glue and waste oil (1:1 ratio). Resulting briquettes were analyzed for its water content, ash content, density, volatile matter content, fixed carbon content, combustion rate, calorific value, and compressive strength. Satisfying results were obtained for briquettes with a front to shell ratio of 1:8, and a particle size of 100 mesh. At this condition, the resulting briquettes have water content of 5.5%; ash content of 2.54%; density of 0.51 g/cm3; 19.58% vapor content; fixed carbon content of 72.38%; combustion rate of 0.2 g/min (3.4×10-3 g/sec); calorific value of 15.3 kcal/g; and compressive strength of 0.06 N/mm2. These results have complied with the Indonesian National Standard (SNI), Japanese, American, and English standards, except for briquette compressive strength, which have not met the industrial standard.
HIDROLISIS SELULOSA MENGGUNAKAN KATALIS KARBON TERSULFONASI BERBASIS CANGKANG KEMIRI Dian Halimah Batubara; Taslim; Seri Maulina; Iriany
Jurnal Teknik Kimia USU Vol. 7 No. 2 (2018): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (207.247 KB) | DOI: 10.32734/jtk.v7i2.1645

Abstract

Cogon grass (Imperata cylindrica) contains cellulose which is convertible to glucose through hydrolysis by using inorganic liquid acid catalyst. However, the use of such catalyst leads to corrosion problem, environment pollution, and complex separation. To overcome this problem, a sulfonated carbon catalyst was proposed. This study aimed to evaluate candlenut shell as carbon source for catalyst support in sulfonated carbon catalyst, and its application in cellulose hydrolysis. Candlenut shell was carbonized at 300-550oC for 4 h. Resulting carbon was sulfonated at 120-150oC for 6 h. Sulfonated carbon was assessed for its H+ capacity/acidity. The carbon with highest acidity was applied as solid acid catalyst in cogon grass hydrolysis. Resulting glucose was analyzed by dinitrosalicylic acid (DNS) method. Results suggest that sulfonated carbon from candlenut shell can be utilized as heterogeneous catalyst in cogon grass hydrolysis.
Hexagonal Rotary Dryer Untuk Peningkatan Efisiensi Pengeringan Biji Kopi Di Desa Sempajaya, Kecamatan Berastagi, Kabupaten Karo Rivaldi Sidabutar; Rondang Tambun; Iriany; Taslim; M. Thoriq Al Fath; Daniel Reymondo Manurung; Venansia Matondang; Reny Arapenta Ginting; Juan Surya Manurung; Josua Manurung
ABDI SABHA (Jurnal Pengabdian kepada Masyarakat) Vol. 4 No. 3 (2023): Oktober
Publisher : CERED Indonesia Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53695/jas.v4i3.975

Abstract

Penanganan pascapanen hasil tani masyarakat perlu mendapat perhatian guna meningkatkan mutu hasil panen. Pengeringan merupakan salah satu penanganan pasca panen yang perlu mendapat perhatian. Metode konvensional yang diterapkan oleh petani saat ini masih perlu perbaikan. Petani kopi perlu mendapat perhatian dalam penanganan pasca panen. Penanganan yang umum dilakukan oleh petani adalah pengeringan langsung di bawah cahaya matahari (pengeringan surya alami). Pengeringan ini tidak menjamin keseragaman mutu karena fluktuasi intensitas cahaya matahari. Selain itu kebersihan bahan yang dikeringkan juga tidak terjamin karena dibiarkan di alam terbuka. Hexagonal rotary dryer adalah suatu pengeringan yang memanfaatkan cahaya matahari. Pengeringan ini beroperasi pada pagi, sore, malam hari, atau siang yang mendung/hujan dengan melewatkan udara kering pada media pengering (selongsong). Penggunaan Hexagonal rotary dryer juga bertujuan untuk memudahkan mekanisme penjemuran terutama saat pengumpulan hasil panen saat hujan. Selain itu tujuan lain daripada program ini adalah menghasilkan suatu sistem pengeringan yang mampu menghasilkan hasil tani dengan kualitas yang lebih baik dan seragam, menghasilkan alat pengeringan baru yaitu prototip Hexagonal rotary dryer, serta mendapatkan teknik serta variable pendukung alat pengeringan tersebut.
Co-Authors Akhmad Anugerah S Alvian Andrew Faguh Sitanggang Christina Eka P Cici Novita Sari Cindy Carnella Daniel Reymondo Manurung Dian Halimah Batubara Febrina Iskandar Firman Abednego S. Sibarani Firman Abednego Sarwedi Sibarani Fitri Hariani Nurza Florentina Pandiangan Irsa Septiawan Irvan Jasinda Joko Murtono Josua Manurung Juan Surya Manurung Kenrick Kherliyanda Febriani Krisnawati M. Thoriq Al Fath Meliza Michael Dillo Rizki Ginting Muhammad Zulfadhli Nurul Aini Okta Bani Olyvia Putri Wardhani Rahmad Dennie A. Pohan Ranggita Dwi Nindya Affandi Reni Sutri Reny Arapenta Ginting Rinaldry Sirait Rivaldi Sidabutar Rondang Tambun Salwa Jody Gustia Sari Liza Azura Nst Seri Maulina Tagora Bangkit P.S Taslim Taslim Toni Rizki Aruan Venansia Matondang