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All Journal KATALIS: Jurnal Penelitian Kimia dan Pendidikan Kimia Chemical Engineering Journal Storage (CEJS)
Yogi Chandra
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Chemical Engineering, Chemistry & Bioengineering Chemistry Education

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LITERATURE REVIEW: THE POTENTIAL OF NON-EDIBLE OILS AS RAW MATERIALS FOR BIODIESEL PRODUCTION: TINJAUAN PUSTAKA: POTENSI MINYAK NON-NON-MAKAN SEBAGAI BAHAN BAKU PRODUKSI BIODIESEL Heni Sugesti; Yogi Chandra; Isma Uly Maranggi; Wahyu Triaji Rahadianto; Eka Putri
Chemical Engineering Journal Storage (CEJS) Vol. 5 No. 3 (2025): Chemical Engineering Journal Storage (CEJS)-June 2025
Publisher : LPPM Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/cejs.v5i3.23092

Abstract

The global energy crisis and limited fossil fuel resources have prompted the search for sustainable alternative fuels. Biodiesel is one of the environmentally friendly renewable energy solutions that can be produced from various sources, including non-edible oils. Non-edible oils, such as karanja, jatropha, mahua, castor, neem, linseed, jojoba, and rapeseed, offer several advantages, including not competing with food crops, high lipid content, and the ability to be cultivated on marginal land. Biodiesel production from non-edible oils is carried out through a transesterification process using short-chain alcohol with the aid of catalysts, both homogeneous and heterogeneous. The study results indicate that homogeneous base catalysts achieve high conversion efficiencies under specific reaction conditions. Meanwhile, heterogeneous catalysts also provide high yields (>90%). The use of heterogeneous catalysts offers advantages in separation and recycling processes. Based on these findings, non-edible oils have proven to be a viable and strategic feedstock for the production of second-generation biodiesel. This approach supports the development of sustainable energy and the reduction of carbon emissions in the future.
Pemanfaatan Karbon Aktif dari Cangkang Kelapa Termodifikasi Fe₃O₄ sebagai Adsorben untuk Menurunkan Kadar Logam Seng (Zn2+) Limbah Cair Yogi Chandra; Wahyu Triaji Rahadianto; Heni Sugesti
KATALIS: Jurnal Penelitian Kimia dan Pendidikan Kimia Vol 9 No 1 (2026): Jurnal Katalis Volume 9 Nomor 1 Tahun 2026
Publisher : Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33059/katalis.v9i1.13631

Abstract

Environmental pollution originating from industrial waste, including waste containing heavy metals such as ions (Zn²⁺), is a serious concern due to its toxic nature, which can endanger human health. Efforts to treat heavy metal waste continue to be developed, one of which is through adsorption, which is considered efficient, inexpensive, and environmentally friendly. The use of composite-based materials, such as Fe3O4 and coconut shell activated carbon, offers great potential because it combines the magnetic properties of Fe3O4 and the surface area of activated carbon, thereby facilitating the separation process and increasing adsorption capacity. This study aims to evaluate the effectiveness of activated carbon derived from coconut shells and modified with Fe₃O₄ as an adsorbent to reduce the zinc ion (Zn²⁺) content in liquid waste. Activated carbon was modified with Fe₃O₄ to increase its adsorption capacity and facilitate the separation of the adsorbent after the process. Fe3O4-modified activated carbon was characterized using Scanning Electron Microscopy (SEM) to observe the surface morphology and texture, as well as to verify the success of the modification. The SEM characterization results showed changes in the surface structure of activated carbon after Fe3O4 modification. Adsorption tests were conducted in batches to determine the optimal contact time parameter. Contact time variations were tested to determine the adsorption kinetics (Zn²⁺). The results showed that Fe3O4-modified activated carbon had good adsorption performance for (Zn²⁺) ions, achieving a significant reduction in concentration. The optimal contact time for adsorption (Zn²⁺) was found to be 75 minutes, at which the adsorption efficiency (%) reached 90.1%. The conclusion of this study is that Fe3O4-modified coconut shell activated carbon is a potential, efficient, and environmentally friendly adsorbent for treating liquid waste contaminated with heavy metals (Zn²⁺).
Co-Authors Eka Putri Heni Sugesti Heni Sugesti Isma Uly Maranggi Rahadianto Wahyu Triaji Wahyu Triaji Rahadianto