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All Journal VALENSI KOVALEN: Jurnal Riset Kimia Al-Kimia SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan KAIBON ABHINAYA : JURNAL PENGABDIAN MASYARAKAT Jurnal ABDINUS : Jurnal Pengabdian Nusantara ABDI MOESTOPO: Jurnal Pengabdian pada Masyarakat Sewagati
Dwi Juli Puspitasari
Jurusan Kimia FMIPA Universitas Tadulako
Agriculture, Biological Sciences & Forestry Arts Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Medicine & Pharmacology Nursing Public Health Social Sciences Other

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Adsorpsi Logam Merkuri (Hg) dari Limbah Tanah Tercemar Menggunakan Tanaman Sawi (Brassica juncea L) pada Berbagai Waktu Tanam: Adsorption of Mercury (Hg) from Contaminated Soil Waste Using Sawi Plants (Brassica juncea L) in Various Planting Times Khairuddin; Wiranto Wengkau; Dwi Juli Puspitasari; Husain Sosidi; Nov Irmawati Inda
KOVALEN: Jurnal Riset Kimia Vol. 7 No. 1 (2021): Edisi April
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2021.v7.i1.13666

Abstract

Mercury (Hg) as a gold extractor can cause environmental pollution, therefore, hyperaccumulator plants are needed, such as mustard greens (Brassica juncea L). Research on the effect of planting time of mustard greens on the adsorption of mercury (Hg) metal ion on contaminated soil waste has been carried out. The purpose of this research was to determine the concentration and adsorption mechanism of Hg metal ion from contaminated soil at roots and canopy of mustard plants at various planting times. Amount of Hg metal ion adsorbed on the roots and canopy of mustard greens at 2, 4, and 6 weeks of planting times were analyzed using Atomic Absorption Spectrophotometry (AAS). The results showed that the average levels of Hg metal ion adsorption at various planting time of 2, 4, and 6 weeks at roots were 156.611 μg/g, 810.256 μg/g, and 888.711 μg/g, respectively, and at the canopy were 69.486 μg/g, 134.580 μg/g, and 60.416 μg/g, respectively. The planting time of 6 weeks resulted in the highest adsorption ability of Hg at the roots. The results of the bioconcentration factor (BCF) test showed that the adsorption of Hg in the roots and canopy of the mustard plant took place using a phytoextraction mechanism (BCF < 1).
Adsorbsi Ion Logam Cu (II) Menggunakan Biomassa Daun Genjer (Limnocharis flava): Adsorption of Cu (II) Ions by Biomass of Genjer Leaves (Limnocharis flava) Helni Febriani; Dwi Juli Puspitasari; Ruslan; Husain Sosidi
KOVALEN: Jurnal Riset Kimia Vol. 7 No. 2 (2021): Edisi Agustus
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2021.v7.i2.14009

Abstract

The adsorption of Cu (II) ions by Genjer (Limnocharis flava) biomass has been carried out. This research aims to determine the optimum pH of the plant and the contact time between the metal ion Cu (II) with the plant that produces the highest absorption, as well as knowing the best adsorbent mass for absorption between Cu (II) metal ions and genjer plants. The study used a completely randomized design (CRD) with variables of pH, contact time, and adsorbent mass. The testing of the absorption of the Genjer leaves biomass against Cu (II) was carried out with Atomic Adsorption Spectrophotometric (AAS). The results showed that the optimum absorption produced was 83.34% at pH 4, and 91.54% with the highest contact time of 30 minutes, and 82.04% with an adsorbent mass of 1 gram. Keywords: Limnocharis flava, pH, contact time, adsorbent mass, adsorption, Cu (II) ion
PEMANFAATAN LIMBAH KULIT BUAH PISANG KEPOK (Musa paradisiaca) SEBAGAI BIOSORBEN ZAT WARNA RHODAMIN B Musafira Musafira; Nurfitrah M Adam; Dwi Juli Puspitasari
KOVALEN: Jurnal Riset Kimia Vol. 5 No. 3 (2019): Edisi Desember
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (573.476 KB) | DOI: 10.22487/kovalen.2019.v5.i3.14629

Abstract

The investigation about the utilization of Banana peel (Musa paradisiaca) as biosorbent Rhodamine B dye has been done The purpose of this study was to determine the maximum contact time and to determine the adsorption capacity of kepok banana peel. Completely randomized design (CRD) was used in this research with two variables (the contact time and Rhodamine B concentration. Both variables were done in five levels i.e 10, 30, 60, 90, and 120 min and 2, 4, 6, 8 and 10 ppm respectively. The result showed that the maximum concentration of banana peel in adsorbing Rhodamine B was 6 ppm with 120 of contact time, and Rhodamine B adsorption capacity was 4.55mg/g. Keywords: Banana peel, Rhodamine B, biosorbent
Pembuatan Konsentrat Protein Ampas Tahu Menggunakan Garam Ammonium Sulfat: Manufacturing of Tofu Pulp Protein Concentrate Using Ammonium Sulphate Nurhaeni; Frischa Sari Kencana; Andi Tenri Ajeng; Khairuddin; Prismawiryanti; Syamsuddin; Dwi Juli Puspitasari; Indriani; Erwin Abdul Rahim
KOVALEN: Jurnal Riset Kimia Vol. 8 No. 1 (2022): 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.2022.v8.i1.15844

Abstract

Tofu pulp which generally becomes waste can be used as a source of protein concentrate. Protein concentrates from tofu pulp have been obtained at various ratios of tofu pulp: ammonium sulfate and ammonium sulfate salt concentration. The research was conducted to obtain the highest protein yield and content of tofu pulp protein concentrate. This study used a completely randomized design (CRD) with the independent variable being the ratio of tofu pulp filtrate: ammonium sulfate (1:2, 1:3, 1:4, 1:5, 1:6, and 1:7 (v/v)) and concentrations of ammonium sulfate (30, 40, 50, 60, 70, and 80%), while the dependent variables were the yield of protein concentrate and protein content. Production of protein concentrate used the salting-out method with ammonium sulfate salt. The ratio of tofu pulp: ammonium sulfate 70% obtained the best ratio of 1:5 with a yield of 41.6% and protein content of 84.58%. Tofu pulp as industrial waste can be a potential source of protein concentrate because it has a high protein content.
Potensi Ekstrak Batang Kayu Gempol (Nauclea orientalis L.) dalam Menghambat Pertumbuhan Bakteri: Potency of Gempol (Nauclea orientalis L.) Stem Extracts to Inhibiting Bacterial Growth Ni Kadek Atmiyanti; Pasjan Satrimafitrah; Abd. Rahman Razak; Nov Irmawati Inda; Indriani; Dwi Juli Puspitasari
KOVALEN: Jurnal Riset Kimia Vol. 8 No. 2 (2022): 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.2022.v8.i2.15962

Abstract

The study of the potential of Gempol wood stem extract (Nauclea orientalis L.) with three solvent polarities has been exercised to determine the extract with a certain polarity and the smallest concentration that can inhibit the growth of bacteria Staphylococcus aureus and Escherichia coil. Extraction is performed using the maceration method with n-hexane, ethyl acetate, and ethanol as solvents. Furthermore, the potency in inhibiting the growth of bacteria was observed by the diffusion method with a range of extract concentrations from the largest to the smallest. The extract's ability to inhibit bacterial growth in the time range of up to 24 hours was measured using the turbidimetric method. The results showed that ethyl acetate and ethanol extracts were able to inhibit the growth of both bacteria in a wide concentration range (100 %– 5%), although n-hexane extracts showed the highest percentage in inhibiting both bacteria (15.27 mm and 16.89 mm, respectively). Turbidimetric assays showed the extract was stronger in inhibiting S. aureus compared to E. coli in the logarithmic phase range of 12 hours. This study showed that semipolar and polar extracts can inhibit the growth of bacteria with a wider concentration range compared to non-polar extracts despite having a higher inhibition capability.
Penurunan Kadar Chemical Oxygen Demand (COD) pada Limbah Cair Industri Tahu Menggunakan Arang Aktif dari Pelepah Kelapa Sawit (Elaeis guenensis Jacq.) : Reducing Chemical Oxygen Demand (COD) Levels in Tofu Industrial Liquid Waste Using Activated Charcoal from Palm Oil (Elaeis guenensis Jacq.) Mid-ribs Khairuddin; Ruslan Ruslan; Muh.Ricky Arisandi M. Tahili; Dwi Juli Puspitasari; Indriani; Husain Sosidi; Prismawiryanti; Moh. Mirzan
KOVALEN: Jurnal Riset Kimia Vol. 8 No. 2 (2022): 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.2022.v8.i2.15966

Abstract

Oil palm midribs (Elaeis guenensis Jacq.) are one of the wastes from oil palm plantations. The high carbon element composition in the palm midribs has the potential to be used as charcoal or activated carbon. Activated carbon can reduce COD levels in tofu industrial wastewater. This study aims to determine the effect of activated carbon mass and contact time on decreasing COD levels in tofu industrial wastewater. Palm midrib charcoal was activated using HCl 1N with the independent variable of activated charcoal mass (1, 3, 5, 7, and 9 grams) and contact times (30, 60, 90, 120, and 150 minutes), while the dependent variable was the percentage decrease COD levels. Activated charcoal from the palm midribs was in accordance with SNI 06-3730-1995 concerning the Quality Standard of Activated Charcoal. The effect of the adsorbent mass showed that the mass increase in activated charcoal was directly proportional to the percentage decrease in COD levels in the tofu industrial wastewater, while the optimum contact time of activated charcoal was obtained at 60 minutes with a decrease in COD levels of 82.13%.
Pengelolaan Alat-Alat dan Bahan Kimia Laboratorium IPA SMA di MGMP Kimia Kabupaten Donggala : Pengelolaan Alat-Alat dan Bahan Kimia Laboratorium IPA SMA di MGMP Kimia Kabupaten Donggala Dwi Juli Puspitasari; husain Sosidi; prismawiryanti prismawiryanti
KAIBON ABHINAYA : JURNAL PENGABDIAN MASYARAKAT Vol. 5 No. 2 (2023)
Publisher : Universitas Serang Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30656/ka.v5i2.5698

Abstract

One of the problems that often arise in the world of education is the lack of learning resources, educational facilities and their use in assisting the learning process. The teacher's lack of knowledge in the use, maintenance and storage of equipment and chemicals makes the laboratory not utilized as a learning resource. The purpose of this service is to provide knowledge and skills to chemistry teachers regarding the management of chemical equipment and materials at the chemistry MGMP in Donggala district a. Community service activities were carried out at the MGMP Chemistry SMA Donggala Regency. Service activities are carried out by understanding of the provision of material regarding the management of equipment and chemicals, then followed by material on safety and work safety in the laboratory. Furthermore, carrying out field practice in the chemical laboratory in the form of guidance and assistance in the management of chemical equipment and materials. This activity is expected to increase understanding in chemistry learning as well as an increase in teacher quality which has a positive impact on improving student achievement.
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

Abstract

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

Abstract

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

Abstract

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%.
Co-Authors Abd. Rahman Razak Abd. Rahman Razak Ahmad Ridhay Aini Auliana Amar Amiluddin, Muh. Rafiq Andi Saifah Andi Tenri Ajeng Ardipa, Galang Arlina Mayharty Andulaai Askhiatul Fitriah Asri Wulandari Bambang Sardi Diharnaini Diharnaini Erwin Abdul Rahim Firmansyah Firmansyah Frischa Sari Kencana Habiba, Lisma Hardi Ys. Hasdinda, Hasdinda Helni Febriani Husain Sosidi Indriani Indriani Indriani Indriani Irawati Saleh Irmawati Inda, Nov Ivone Venita Sarapun Kahiruddin Khairuddin Khairuddin Khairuddin - Khairuddin Khairuddin Khairunnisa Khairunnisa M. Yogi Riyantama Isjoni Maulana, Asad Miswan Moh. Mirzan Moh. Mirzan Muala, Bahran Muh.Ricky Arisandi M. Tahili Musafira Naser, Inda Hastuti N Nea, Sirah Diniati Ni Kadek Atmiyanti Ni Ketut Sumarni Nov Irmawati Inda Nurfitrah M Adam Nurhaeni Nurhaeni Nurhaeni Nurhaeni Pasjan Satrimafitrah Prismawiryanti Prismawiryanti Ruslan Ruslan Ruslan Siswahyudianto Sumarni Sumarni Sutomo Eka Putra Syaiful Bahri SYAIFUL BAHRI Syamsuddin Syamsuddin Ulfa Mustika Sari Wasis, Masita Ramadhani Wiranto Wengkau Yana Silvia Mauru Yanti, Wilda