The montmorillonite (MMT) nanoparticles as patchouli oil bleaching has been prepared from the isolated MMT of Aceh Tamiang bentonite. MMT in bentonite powder was isolated through a top-down isolation method by ultrasonication, sedimentation and high energy milling process. As many as 14% of MMT was successfully isolated and characterized via XRF and XRD. XRF analysis on the composition of isolated MMT indicated that the major composition of MMT are Si (24.76%) and Al (16.37%). From XRD pattern, the two theta (2θ) peak of MMT are about 19.85°, 20.30° , 26.62 and 50.15° that was identified as MMT (empirical formula (Si7.80Al1.72Cs0.16Fe0.20Mg0.28O20.00)), indicating the success of the isolation process. Furthermore, based on the results calculated using XRD with Scherer’s equation, the size of MMT was 0.42 nm and the derived lattice constant was 4.20 Å. Moreover, the MMT nanoparticles exhibited as a good Patchouli Oil Bleaching material to reduce colors in oil.
Gampong Kuala Langsa merupakan salah satu desa yang terletak di pesisir Kecamatan Langsa Barat, Langsa, Aceh. Secara geografis, Gampong terletak di dataran rendah sehingga menyebabkan terjadinya pasang naik air laut. Akibatnya tanah di Gampong Kuala Langsa memiliki tingkat salinitas tinggi, yakni sekitar 28,3—36 ppm. Kondisi tanah tersebut sangat tidak menguntungkan untuk bercocok tanam sayuran. Selain keadaan tanah yang tidak menguntungkan, terbatasnya lahan yang tersedia (dialihfungsikan sebagai tambak dan hutan mangrove) menjadi permasalahan mitra dalam memenuhi kebutuhan sayuran secara mandiri. Solusi permasalahan tersebut adalah dengan melakukan pengenalan dan penerapan sistem bercocok tanam secara hidroponik karena sistem ini sangat cocok diterapkan di daerah dengan kondisi tanah yang memiliki salinitas tinggi dan lahan terbatas. Bentuk kegiatan pengabdian ini adalah pelatihan yang terdiri atas tiga tahapan utama, yaitu survei lokasi dan sosialisasi, pelatihan, dan pemonitoran/evaluasi. Berdasarkan hasil kegiatan dapat disimpulkan bahwa (a) pengetahuan masyarakat mengenai teknik hidroponik meningkat yang ditandai dengan respons positif; (b) bercocok tanam secara hidroponik menggunakan metode nutrient film technique (NFT) dan metode rakit apung (metode sederhana) berhasil dilaksanakan oleh ibu-ibu PKK; dan (c) kegiatan ini sangat bermanfaat bagi masyarakat Gampong Kuala Langsa, khususnya ibu-ibu PKK sebagai sarana pendidikan kemandirian pangan.
Potential water sources such as white shrimp shell waste (Penaeus merguiensis) can be used as a source of chitosan. Chitosan can be applied as an environmentally friendly adsorbent for water treatment because of its ability to adsorb metal ions. In this study, chitosan was isolated through several stages such as demineralization, deproteination, decolourization and deacetylation. The yield of chitosan obtained from this study was 17.73%. Characterization by infrared spectroscopy (FTIR) showed the absorption at 3355 cm -1 indicating the presence of amine (-NH2) and hydroxyl (-OH) groups. The absorption of the carbonyl group (-C=O) at 1642 cm -1 disappeared while the absorption of the free amine group (-NH2) at 1590 cm -1 increased indicating the successful deacetylation with a degree of deacetylation (DD) 78%. Application of chitosan in wellbore water did not affect on colour change and decreasing of iron (Fe) content due to low concentration of iron (Fe). However, chitosan can reduce the pH value of water and manganese (Mn) content. The results of ANOVA and DMRT test at 0.05 significance level showed that chitosan with various mass had different effects. The more the mass of chitosan added, the higher the content of manganese (Mn) will decrease.
ZIF-8 has been synthesized with methanol solvent at room temperature (25-30°C), with molar composition of zinc nitrate: 2-methylimidazolate: TEA = 1: 4: 4. Furthermore, ZIF-8 has been synthesized using filtrate from synthesis. Repetition of ZIF-8 synthesis using filtrate from synthesis has been done for six times. The produced samples were investigated using XRD, FT-IR and SEM. XRD pattern showed that ZIF-8 which have been synthesized using reuse filtrate has same peaks with ZIF-8 from first synthesized. FTIR spectra of ZIF-8 showed a peak at 422 cm−1 which indicated the presence of zinc bonded to the nitrogen in ZIF-8. Besides SEM analysis of ZIF-8 particles size whit are synthesized using MeOH and reuse filtrate have yielded that ZIF-8 micropore size. The results showed that the synthesis of ZIF-8 using reuse filtrate was succesfully carried out.
Beta Karoten merupakan provitamin A yang dapat diubah didalam tubuh menjadi vitamin A setelah mengalami proses metabolisme. Beta karoten merupakan salah satu parameter yang menentukan kualitas CPO dalam perdagangan internasional. Penelitian ini bertujuan untuk mengetahui kandungan beta karoten pada sampel CPO (Crude Palm Oil) menggunakan metode spektrofotometri UV-Vis. Metode yang digunakan dalam analisis beta karoten adalah metode standar MPOB (Malaysian Palm Oil Board). Hasil analisis menggunakan spektrofotometer UV-Vis menunjukkan bahwa kandungan beta karoten dari masing-masing sampel berturut-turut adalah sebagai berikut: Sampel A(330,00 ppm), Sampel B (346,26 ppm), Sampel C(358,70 ppm), Sampel D(549,05 ppm), dan Sampel E (533,75 ppm). Berdasarkan hasil analisis UV Vis terhadap sampel dapat disimpulkan bahwa sampel D memiliki kandungan beta karoten yang paling tinggi dibandingkan dengan sampel CPO lainnya.
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