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Pemanfaatan Karbon Aktif Kulit Kacang Tanah untuk Menurunkan Kadar Ion logam Ca2+ dan Mg2+ dalam Air: Utilization Peanut Shell Activated Carbon to Reduce Levels of Ca2+ and Mg2+ in Water Wilda Yanti; Husain Sosidi; Indriani; Prismawiryanti; Dwi Juli Puspitasari; Moh. Mirzan; Erwin Abdul Rahim; Nov Irmawati Inda
KOVALEN: Jurnal Riset Kimia Vol. 9 No. 2 (2023): August Edition
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2023.v9.i2.16397

Peanut shell has a high cellulose content as a carbon source which can be used as a basic ingredient for making activated charcoal. Research on peanut shells used as activated charcoal aims to determine the effect of contact time and pH on reducing levels of metal ions Ca2+ and Mg2+ in water. The research was conducted using contact time variables (30, 60, 90, 120, and 150 minutes) and pH (4, 5, 6, 7, and 8). Measurement of adsorbed metal levels was determined by using an Atomic Absorption Spectrophotometer (AAS). The research results obtained showed that variations in contact time could reduce Ca2+ levels by 77.46% -84.89% and Mg2+ by 86.88%-88.91%. Adsorbents with variations in pH can reduce Ca2+ levels by 63.48%-88.74% and Mg2+ by 90.35%-94.49%. The best conditions for the absorption of Ca2+ and Mg2+ ions were a contact time of 60 minutes and pH 4. The adsorbent was applied to reduce Ca2+ and Mg2+ levels in water with different hardness levels. The results of the analysis of water samples from two different locations had Ca2+ levels of 94.180 mg/L and 210.20 mg/L, while Mg2+ levels were 13.536 mg/L and 17.420 mg/L. The percentages of Ca2+ adsorption for the two samples were 96.19% and 77.08%, and the percentages of Mg2+ adsorption for the two samples were 21.16% and 10.63%. Carbon from peanut shells activated with sodium acetate has the potential to be used to reduce hardness in water.

Pelatihan Pembuatan Makanan Fungsional Berbasis Tepung Ampas Kelapa dan Tepung Kelor pada Ibu-Ibu PKK di Desa Binangga Kecamatan Marawola Kabupaten Sigi Sardi, Bambang; Puspitasari, Dwi Juli; Sumarni, Ni Ketut; Nurhaeni, Nurhaeni; Maulana, Asad; Amiluddin, Muh. Rafiq; Wulandari, Asri; Miswan; Saifah, Andi; Mahfud, Mahfud
Sewagati Vol 8 No 5 (2024)
Publisher : Pusat Publikasi ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j26139960.v8i5.1939

Keberadaan kasus stunting dan pertumbuhan ekonomi yang lambat di Desa Binangga menjadi pendorong untuk melakukan pengabdian. Metode yang digunakan dalam menangani kasus melalui pendekatan barbasis produk daerah. Makanan fungsional dari tepung ampas kelapa dan daun kelor dapat digunakan untuk menangani stunting dan menumbuhkan ekonomi masyarakat. Penanganan stunting dan pemulihan ekonomi dilakukan melalui beberapa tahapan yaitu persiapan, produksi, standarisasi, penerapan, dan evaluasi. Tahapan persiapan meliputi indentifikasi dan diskusi masalah, serta sosialisasi dan penerapan pembentukan produk diikuti 45 orang yang terdiri dari ibu-ibu PKK, kader puskesmas, orang tua yang anaknya terindikasi stunting, dan petani kelapa. Dari identifikasi dan koordinasi dengan ibu-ibu PKK diperoleh data sekitar 10 anak yang terindikasi stunting berdasarkan jenis kelamin, usia, tinggi, dan berat badan anak. Tahapan selanjutnya dilakukan produksi dan standarisasi makanan fungsional. Tahapan penerapan dan evaluasi dilakukan dengan intervensi makanan fungsional selama 2 minggu dan pengukuran tinggi dan berat badan anak setiap minggu. Diperoleh hasil telah terjadi pertambahan tinggi dan berat badan anak rata-rata masing-masing 0,71 cm dan 0,48 kg tiap minggu. Keberhasilan intervensi makanan fungsional dalam meningkatkan tinggi dan berat badan anak dapat menjadi alternatif penanganan stunting. Keberhasilan ini juga dapat menjadi motivasi buat ibu-ibu PKK untuk mengembangkan dan memasarkan berbagai produk melalui platform digital.

Reduksi Kandungan Zat Aktif Anionik dalam Limbah Laundry dengan Memanfaatkan Kombinasi Zeolit dari Tongkol Jagung dan Pseudomonas aeruginosa: Reduction of Anionic Surfactant Content in Laundry Wastewater by Utilizing a Combination of Zeolite from Corn Cobs and Pseudomonas aeruginosa Nea, Sirah Diniati; Nurhaeni; Puspitasari, Dwi Juli; Prismawiryanti; Inda, Nov Irmawati; Sumarni, Ni Ketut; Ruslan
KOVALEN: Jurnal Riset Kimia Vol. 10 No. 1 (2024): April Edition
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2024.v10.i1.16982

The increasing environmental pollution is one of the consequences of human activities that continue to expand. The environment has limitations in coping with pollutants generated by humans, such as waste from the laundry industry. This research aims to evaluate the combined effect of zeolite produced from corn cobs and the use of microorganisms capable of degrading anionic surfactants, with the goal of reducing the concentration of anionic surfactants in laundry wastewater. The methods used include adsorption using corn cobs as adsorbents and biodegradation using surfactant-degrading bacteria. Morphological observations using Scanning Electron Microscope (SEM) indicate that the produced zeolite has a crystal structure that stacks up like clumps of cubes. X-ray Diffraction (XRD) analysis shows that zeolite synthesized with a silica extraction ratio from corn cobs and sodium aluminate of 20:20 mL has been successfully conducted. The biodegradation process of anionic surfactants in laundry wastewater using a combination of synthesized zeolite and Pseudomonas aeruginosa bacteria employing the Methylene Blue Alkyl Substance (MBAS) method has shown a decrease in concentration to 1.66 mg/L and degradation of 33.55%, especially in sample 3 with variations of 7.5 grams of corn cob zeolite and 15% microorganisms, during a 5-day experiment.

Modification & Characterization of Activated Carbon Impregnated with KCl, Na2S, and KI for Enhancing Mercury (Hg) Removal from Natural Gas Muala, Bahran; Sumarni, Ni Ketut; Puspitasari, Dwi Juli
Jurnal Kimia Valensi Jurnal Kimia VALENSI, Volume 10, No. 2, November 2024
Publisher : Syarif Hidayatullah State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jkv.v10i2.40876

Modified activated carbon (MAC) has been synthesized and characterized to enhance mercury (Hg) removal from natural gas. MAC was modified by impregnating it into KCl, Na2S, and KI to introduce Cl-, S-, and I- elements. SEM-EDX, FTIR, and SAA were used to characterize the AC and MAC. The isotherm and adsorption capacity were studied using the mercury gas standard. The results of SEM-EDX analysis show that the impregnation method is proven to produce MAC containing elements Cl, S, and I with mass % of 2.78% Cl, 0.76% S, and 39.60% I. The surface area is 421.91 m2/g, the total pore volume is 0.386825 cc/g, and the average pore size is 1.83369 nm. Group functions are -OH, C=C, C=O, C-O, and vibrations at the wavelength number 617.81 cm-1, which the impregnation agent forms. The mechanism for absorbing mercury gas into MAC follows the Freundlich isotherm model, with a coefficient of determination (R2) of 0.996. The adsorption capacity on MAC increased 57 times compared to unmodified activated carbon (AC) from 5540.60 to 315730.64 ng/g, with an efficiency maximum of 100%. The MAC has been proven to enhance mercury adsorption from natural gas with an efficiency of 78.6%.

Biskuit Como Flakes Berbahan Dasar Blondo-VCO Fermentasi untuk Pencegahan Stunting di Desa Sidole Barat Puspitasari, Dwi Juli; Sardi, Bambang; Sumarni, Sumarni; Ardipa, Galang; Wasis, Masita Ramadhani
ABDI MOESTOPO: Jurnal Pengabdian Pada Masyarakat Vol 8, No 2 (2025): Juli 2025
Publisher : Universitas Prof. Dr. Moestopo (Beragama)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32509/abdimoestopo.v8i2.4609

Stunting, dan pengetahuan yang masih rendah mengenai pemanfaatan kelapa merupakan masalah utama di Desa Sidole Barat padahal daerah tersebut merupakan penghasil kelapa. Keadaan ini menjadi alasan utama pengabdian dilakukan di Desa Sidole Barat. Pengabdian dilaksanakan dalam 5 tahapan yaitu: Persiapan, Pelatihan, Penerapan teknologi, Pendampingan dan Keberlanjutan program. Kegiatan pengabdian diikuti oleh 19 peserta terdi dari ibu ibu PKK dan petani kelapa, Tahapan sosialisasi meliputi kegiatan koordinasia antara tim pengabdian dan tim pengabdian dengan mitra. Tahapan selanjutnya adalah pelatihan berupa demontrasi pembuatan VCO dan biscuit Como Flakes.Sebelumnya diberikan bantuan alat produksi. Penerapan teknologi berupa pembuatan VCO secara fermentasi anaerob dan pemanfaatan dalam pembuatan biscuit como flakes serta pemasaran menggunakan platform digital. Tahapan pendampingan berupa pelatihan dan pembimbingan hingga peserta dapat melalukan sendiri sepetrti pembuatan biscuit, pembuatan stiker kemasan dan pemasaran secara online menggunakan media sosial. Keberlanjutan program lebih focus pada pemanfaatan limbah ampas kelapa yang dihasilkan dengan membuat menjadi tepung sebagai bahan fortifikasi terigu dalam pembuatan biskuit. Berdasarkan hasil test yang dilakukan diperoleh hasil pengetahuan peserta mengani pemanfaatan kelapa sebagai bahan pembuatan VCO -blondo dan Biskuit bertambah dan peserta paus dengan kegiatan ini dan ingin kegiatan ini dilakukan berkesinambungan.

Modification & Characterization of Activated Carbon Impregnated with KCl, Na2S, and KI for Enhancing Mercury (Hg) Removal from Natural Gas Muala, Bahran; Sumarni, Ni Ketut; Puspitasari, Dwi Juli
Jurnal Kimia Valensi Jurnal Kimia VALENSI, Volume 10, No. 2, November 2024
Publisher : Department of Chemistry, Faculty of Science and Technology Syarif Hidayatullah Jakarta State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jkv.v10i2.40876

Modified activated carbon (MAC) has been synthesized and characterized to enhance mercury (Hg) removal from natural gas. MAC was modified by impregnating it into KCl, Na2S, and KI to introduce Cl-, S-, and I- elements. SEM-EDX, FTIR, and SAA were used to characterize the AC and MAC. The isotherm and adsorption capacity were studied using the mercury gas standard. The results of SEM-EDX analysis show that the impregnation method is proven to produce MAC containing elements Cl, S, and I with mass % of 2.78% Cl, 0.76% S, and 39.60% I. The surface area is 421.91 m2/g, the total pore volume is 0.386825 cc/g, and the average pore size is 1.83369 nm. Group functions are -OH, C=C, C=O, C-O, and vibrations at the wavelength number 617.81 cm-1, which the impregnation agent forms. The mechanism for absorbing mercury gas into MAC follows the Freundlich isotherm model, with a coefficient of determination (R2) of 0.996. The adsorption capacity on MAC increased 57 times compared to unmodified activated carbon (AC) from 5540.60 to 315730.64 ng/g, with an efficiency maximum of 100%. The MAC has been proven to enhance mercury adsorption from natural gas with an efficiency of 78.6%.

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