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All Journal Agrifor : Jurnal Ilmu Pertanian dan Kehutanan Jurnal Rekayasa Kimia & Lingkungan
Mohammad Khotib
IPB University
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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PRODUKSI PUPUK ORGANIK PADAT DARI LIMBAH SERABUT KELAPA SAWIT DENGAN BAHAN PENUTUP GEOTEKSTIL Fahrizal Hazra; Deden Saprudin; Mohammad Khotib; Kevin Setiawan
Agrifor : Jurnal Ilmu Pertanian dan Kehutanan Vol 22, No 1 (2023): Maret 2023
Publisher : Universitas 17 Agustus 1945 Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31293/agrifor.v22i1.6371

Abstract

Serabut kelapa sawit memiliki C/N rasio yang tinggi sehingga dalam pemanfaatannya sebagai pupuk organik padat diperlukan proses pengomposan agar dapat menurunkan C/N rasio. Bahan penutup yang baik diperlukan dalam proses pengomposan guna menghasilkan pupuk organik padat yang efektif dan memenuhi syarat mutu. Tujuan penelitian ini adalah memproduksi pupuk organik padat dari limbah serabut kelapa sawit menggunakan bahan penutup geotekstil dengan pembanding penutup plastik, serta dilakukan pengujian kualitas fisik, kimia, dan biologi. Penelitian ini menggunakan rancangan acak lengkap (RAL) 2 × 2. Faktor pertama merupakan bahan penutup (P), yang terdiri atas 2 taraf yaitu, bahan penutup geotekstil (P1) dan bahan penutup plastik (P2). Faktor kedua adalah penambahan mikrob (C), yang terdiri 2 taraf yaitu, tanpa penambahan mikrob (C0), dan dengan penambahan mikrob (C1). Proses pengomposan dilakukan selama 30 hari dan dilakukan pembalikan setiap 3 hari. Hasil penelitian menunjukkan bahwa produksi pupuk organik padat kualitas terbaik terdapat pada perlakuan dengan bahan penutup geotekstil yang menghasilkan warna coklat kehitaman dan beraroma seperti tanah, pH dan total hara makro (N+P2O5+K2O) yang telah memenuhi syarat berdasarkan Keputusan Menteri Pertanian No. 261 Tahun 2019, serta total mikrob yang sangat tinggi.
Adsorption of Methylene Blue by Graft Copolymer Acrylamide onto Pineapple Peel Cellulose with the Addition of Activated Carbon Microwave-Assisted Putri Permatasari; Komar Sutriah; Mohammad Khotib
Jurnal Rekayasa Kimia & Lingkungan Vol 18, No 1 (2023): Jurnal Rekayasa Kimia dan Lingkungan (January-June, 2023 )
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v18i1.26894

Abstract

Cationic dyes such as methylene blue are among the most widely used dye in the textile and paper industry. The dye waste produced causes environmental pollution and is harmful to human health. Thus, wastewater treatment becomes an important aspect of reducing this problem. Adsorption is a very effective method for treating various wastewaters due to its high selectivity and capacity. This study aims to prepare an adsorbent from graft copolymer acrylamide onto cellulose with the addition of activated carbon microwave-assisted and to test its performance as an adsorbent for methylene blue. The adsorbent synthesis was carried out using a microwave-assisted graft copolymer technique. The graft of acrylamide onto cellulose with the addition of activated carbon was carried out at various times (3, 4, and 5 minutes). Based on the FTIR spectra characterization of the adsorbent, the functional groups are C=O and N-H, and SEM analysis shows that the surface forms an interconnected network. At 3, 4, and 5 minutes of irradiation, grafting ratios were 329.72, 128.00, and 150.12, with grafting efficiency of 99.74, 72.94, and 78.02%. The maximum adsorption capacity of the adsorbent on methylene blue was 14.00, 6.04, and 9.97 mg/g, respectively, following the Langmuir isotherm model and pseudo second order kinetics. The experimental results show that the adsorbent can effectively remove or eliminate methylene blue in an aqueous solution.
Co-Authors Deden Saprudin Fahrizal Hazra Kevin Setiawan Komar Sutriah Putri Permatasari