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The Moringa Seed (Moringa oleifera, L.) Extracts Potentially Reduce the Effects of Clothes Washing Wastewater on Growth of Green Beans (Vigna radiata) Merymistika Y. Afred; Bibiana D. Tawa; Pius D. Ola
Journal of Applied Chemical Science Volume 1, No. 2 , 2012
Publisher : Journal of Applied Chemical Science

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A study concerning the use of Moringa seed (Moringa oleifera, L.) extracts to reduce the influence of clothes washing wastewater on growth of green bean (Vigna Radiata) has been conducted. The study aimed to determine the effective dose of coagulants prepared from moringa seed extracts (400, 600, 800, 1000, and 2000 mg/L) on germination of green beans in wastewater. The results showed that the optimum dose of coagulant was 2000 mg/L. The treatments with various doses of coagulants indicated significantly different except for the dose of 1000 mg/L and 2000 mg/L (P < 0.05). The stem height and leaf watering with coagulant water were 25.9 cm and 14.1 cm2, respectively, while by the tap water were 24.3 cm and 10.99 cm2, respectively. Those results conclusively indicated that the water coagulant prepared from moringa seed extracts promotes growth of the vigna radiata.

Antioxidant Activities of Chloroform and Aqueous Fractions of Myrmecodia Pendenss Extract: A Preliminary Study Yohanes Buang; Ermelinda Noya; Pius D. Ola; Theo Da Cunha
Journal of Applied Chemical Science Volume 2, No. 1 , 2013
Publisher : Journal of Applied Chemical Science

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There have been elucidated the antioxidant activities of chloroform and aqueous fractions of methanol extracts isolated from myrmecodia pendenss. The study was firstly started by maceration of myrmecodia pendenss powder in certain quantity of pure methanol solvent and followed by gradual partition of the methanol extract with chloroform and distillated water and then purified with column chromatography. The chemical contents migrated into both those later solvents were detected by GC-MS and their functional groups were detected by FT-IR instruments. Thereafter, the antioxidant activities of the migrated compounds in each those solvents were determined using hydrogen peroxide protocol and the absorbance was measured at 240 nm. The ascorbic acid solution was used as control. The results showed that FT-IR spectrum showed methylene and ethene groups are existed within the compounds contained by the extracts as well as the hydroxyl, carbonyl, aromatic, and keton groups. Furthermore, the GC-MS spectrum indicated the compounds that are existed within the chloroform and the aqueous fractions of the extract. The average absorbances of compounds contained within the chloroform and aqueous fractions were 0.161 and 0.112, respectively, whereas that of the control was 0.085. Those absorbance data conclusively indicated that higher absorbance higher residue of chromophore content existed within the fraction and higher failures of hydroxylation reactions. It was however, the antioxidant activities of the aqueous fractions were higher than those of the chloroform fractions.

ADSORPSI ISOTERMAL HERBISIDA PARAQUAT PADA TANAH DI DESA NONBAUN KECAMATAN FATULEU Nitsae, Merpiseldin; de Rozari, Philiphi; Dore Ola, Pius
Prosiding Seminar Nasional MIPA 2012: PROSIDING SEMINAR NASIONAL MIPA UNDIKSHA 2012
Publisher : Prosiding Seminar Nasional MIPA

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AbstrakPerilaku dan nasib herbisida di dalam tanah sangat dipengaruhi oleh sifat- sifat tanah. Proses adsorpsi paraquat dapat membantu mengurangi pencemaran pada lingkungan tanah namun kelebihan konsentrasi paraquat dapat menyebabkan kerusakan pada struktur tanah dan keracunan bagi organisme di dalam tanah. Penelitian ini bertujuan untuk mengetahui karakteristik tanah serta menentukan kapasitas dan energi adsorpsi paraquat di dalam tanah Desa Nonbaun- Fatuleu. Hasil penelitian menunjukan bahwa tanah desa Nonbaun mempunyai 3 jenis meneral yaitu mineral kuarsa, actinolite dan muscovite. Harga kapasitas pertukaran kation tanah Nonbaun berada pada kisaran mineral kaolinit yaitu 9,864 meq/100 gram adsorben dengan nilai pH 5,15-5,30 yang menunjukan tanah Desa Nonbaun-Fatuleu tergolong tanah asam. Hasil ini juga diperkuat dengan harga kadar air dan kadar bahan organik yang relatif kecil yaitu 2,77% dan 7,22%. Kapasitas dan energi adsorpsi mengikuti proses isoterm Langmuir baik sebelum maupun sesudah tanah dijenuhkan dengan paraquat. Dari percobaan ini diperoleh nilai kapasitas yang terikat kuat adalah 3,4693 mg/g tanah dan yang terikat lemah adalah 17,7374 mg/g tanah. Sedangkan Energi adsorpsi paraquat berkisar antara 22,92-23,09 KJ/mol.

ADSORPSI ISOTERMAL HERBISIDA PARAQUAT PADA TANAH DI DESA NONBAUN KECAMATAN FATULEU Merpiseldin Nitsae; Philiphi de Rozari; Pius Dore Ola
Prosiding Seminar Nasional MIPA 2012: PROSIDING SEMINAR NASIONAL MIPA UNDIKSHA 2012
Publisher : Prosiding Seminar Nasional MIPA

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AbstrakPerilaku dan nasib herbisida di dalam tanah sangat dipengaruhi oleh sifat- sifat tanah. Proses adsorpsi paraquat dapat membantu mengurangi pencemaran pada lingkungan tanah namun kelebihan konsentrasi paraquat dapat menyebabkan kerusakan pada struktur tanah dan keracunan bagi organisme di dalam tanah. Penelitian ini bertujuan untuk mengetahui karakteristik tanah serta menentukan kapasitas dan energi adsorpsi paraquat di dalam tanah Desa Nonbaun- Fatuleu. Hasil penelitian menunjukan bahwa tanah desa Nonbaun mempunyai 3 jenis meneral yaitu mineral kuarsa, actinolite dan muscovite. Harga kapasitas pertukaran kation tanah Nonbaun berada pada kisaran mineral kaolinit yaitu 9,864 meq/100 gram adsorben dengan nilai pH 5,15-5,30 yang menunjukan tanah Desa Nonbaun-Fatuleu tergolong tanah asam. Hasil ini juga diperkuat dengan harga kadar air dan kadar bahan organik yang relatif kecil yaitu 2,77% dan 7,22%. Kapasitas dan energi adsorpsi mengikuti proses isoterm Langmuir baik sebelum maupun sesudah tanah dijenuhkan dengan paraquat. Dari percobaan ini diperoleh nilai kapasitas yang terikat kuat adalah 3,4693 mg/g tanah dan yang terikat lemah adalah 17,7374 mg/g tanah. Sedangkan Energi adsorpsi paraquat berkisar antara 22,92-23,09 KJ/mol.

Sintesis Senyawa C-2,8,14,20-TETRA-(2,4,5-Trimetoksi)Fenil Kaliks[4] Resorsinarena dari Senyawa 2,4,5-Trimetoksi Benzaldehida Yoktan E Buraen; Pius D Ola; Reinner I Lerrick
Saintek Lahan Kering Vol 2 No 2 (2019): JSLK Desember 2019
Publisher : Fakultas Pertanian, Universitas Timor

The synthesis of C-2,8,14,20-tetra-(2,4,5-trimethoxy)phenyl calix[4] resorcinarene from 2,4,5-trimethoxy benzaldehyde has been done. Through isolation of asaron from Timor Genoak (Acorus calamus) followed by its oxidation with K2Cr2O7, the C-2,8,14,20-tetra-(2,4,5-trimethoxy)phenyl calix[4] resorcinarene has, therefore, been accessed over reflux. The asaron has been isolated as 3.05% of yellow oil whilst, the oxidation produced 2,4,5-trimethoxy benzaldehyde with the yield of 49.49%. The C-2,8,14,20-tetra-(2,4,5-trimethoxy) phenyl calix[4]resorcinarene has been yielded as 89.29% of a brown solid.

SINTESIS SILIKA GEL TERIMOBILISASI DITHIZON MELALUI PROSES SOL-GEL Hermania Em Wogo; Juliana Ofi Segu; Pius Dore Ola
Jurnal Sains dan Terapan Kimia Vol 5, No 1 (2011)
Publisher : Program Studi Kimia, Universitas Lambung Mangkurat

Telah dilakukan penelitian tentang sintesis silika gel terimobilisasi dithizon dari abu sekam padi (yang digunakan sebagai bahan adsorben). Kajian yang dilakukan meliputi sintesis dan karakterisasi silika terimobilisasi dithizon. Metode yang digunakan ialah metode sol-gel. Karakterisasi silika gel dilakukan dengan spektrofotometer inframerah (FTIR), difraktometer sinar-X (XRD), dan penganalisis luas permukaan (SAA). Hasil penelitian menunjukkan bahwa silika terimobilisasi dithizon berhasil dibuat yang ditunjukkan oleh munculnya serapan inframerah dari gugus fungsional –NH, C=N, C-N, -SH, C=S. Data XRD menunjukkan bahwa struktur silika terimobilisasi dithizon bersifat amorf. Hasil SAA menunjukkan bahwa penambahan dithizon menurunkan luas permukaan spesifik silika kecuali untuk penambahan dithizon 2 gram. Kata kunci : silika gel, imobilisasi, dithizon, sekam padi, sol-gel

PENURUNAN KADAR COD dan TSS LIMBAH CAIR TAHU MENGGUNAKAN ELEKTRODA Al-C DENGAN METODE ELEKTROKIMIA Sherlly MF Ledoh; Pius Dore Ola; Luther Kadang
Jurnal Fisika : Fisika Sains dan Aplikasinya Vol 7 No 2 (2022): Jurnal Fisika : Fisika Sains dan Aplikasinya
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/fisa.v7i2.9343

Telah dilakukan penelitian tentang Penurunan kadar COD, dan TSS limbah cair tahu menggunakan elektroda Al-C dengan metode elektrokimia Tujuan dari penelitian ini yaitu untuk membandingkan kadar COD dan TSS limbah cair tahu sebelum elektrolisis dengan SNI, untuk mengetahui pengaruh variasi tegangan listrik (6, 9, dan 12 volt) serta variasi waktu elektrolisis (60,90, dan 120 menit) terhadap perubahan kadar COD dan TSS pada pengolahan limbah cair tahu dengan menggunakan elektroda Al-C secara elektrkimia. Metode yang digunakan adalah elektrodegradasi yang merupakan metode penguraian limbah organic dan anorganik melalui proses degradasi kontinyu dengan cara elektrolisis. Hasil penelitian menunjukkan bahwa pengaruh waktu terbaik adalah 120 menit dengan kadar COD 8.600 mg/l (% removal 9,66%) serta kadar TSS adalah 200 mg/l (persentasi removal 95,83%). Voltase optimum adalah 12 volt dengan kadar COD 8.600 mg/l (persentasi removal 9,66%) serta kadar TSS adalah 200 mg/l (% removal 95,83%).

Simple Microfluidic Paper-Based Analytical Device (μ-PAD) Coupled with Smartphone for Mn(II) Detection Using Tannin as a Green Reagent Fidelis Nitti; Wendelina Archangela Ati; Philiphi de Rozari; Pius Dore Ola; David Tambaru; Luther Kadang
Indonesian Journal of Chemistry Vol 23, No 4 (2023)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.82511

The development of a simple yet greener microfluidic paper-based analytical device (μ-PAD) for on-site detection of Mn(II) in various types of waters using tannin as a natural reagent was described. The μ-PAD consists of twelve detection zones, created on a Whatman Number 1 filter paper by a simple drawing technique using an acrylic watercolor. The detection of Mn(II) was based on the color change on the reaction zone due to the reaction between Mn(II) and the pre-deposited tannin. The μ-PAD image was captured by a portable smartphone detector, and the blue intensity was digitized using a color picker application to generate the reflectance as the analytical response. The proposed method was characterized by a linear dynamic range of 0.05–0.25 mg L−1 with the limit of detection (LOD) for the determination of Mn(II) of 0.026 mg L−1. The other analytical merits of the proposed method, such as precision (RSD, 1.107%), accuracy (E, 6.697%), and recovery (104–112%), were all comparable to the existing spectrophotometric methods. The method’s successful application to natural water samples from manganese mining sites aligns with the reference spectrophotometric method, indicating its good selectivity and accuracy without significant influence of commonly associated interfering ions.

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