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PENGARUH KONSENTRASI ABU SEKAM PADI SEBAGAI BAHAN PENGISI DAN KONSENTRASI SUL…
Pengaruh penambahan abu sekam padi sebagai bahan pengisi dan sulfur sebagai bahan pemvulkanisasi terhadap kualitas karet yang diteliti. Tujuan dari penelitian ini untuk menentukan pengaruh penggunaan konsentrasi pengisi abu sekam padi dan konsentrasi sulfur terhadap kualitas terbaik karet busa berdasarkan uji tegangan putus, perpanjangan putus, kekerasan dan pampatan tetap. Variasi konsentrasi …
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- x, 50 hlm. : ilus. ; 21 cm
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- T584892021
PEMBUATAN MEMBRANE ELECTRODE ASSEMBLY (MEA) DENGAN KATALIS Pd/C DAN Pt/C MENG…
Fabrication, performance and durability test of Membrane Electrode Assembly (MEA) based on Pt/c and Pd/c catalysts have been carried out. MEA was made using Catalyst Coated Membrane (CCM) method. The catalyst coating was carried out by spraying catalyst onto membrane (MEA 1) and with capton (MEA 2). MEA was characterized using Cyclic Voltammetry (CV) method to measure Electrochemical Surface Ar…
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- xvi, 45 hlm. : ilus. ; 21 cm
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- T627872021
PEMBUATAN BIOBRIKET DARI LIMBAH TONGKOL JAGUNG DENGAN CAMPURAN PEREKAT KULIT …
The manufacture of bio briquettes from carbonized corn cobs biomass has been carried out using a furnace, with variations in carbonization temperature 400 , 500 and 600 , and variations carbonization time of 30 minute, 60 minute and 90 minute. After the carbonization process, corn cobs charcoal was obtained, then crushed and sieved using a 100 mesh sieve. After the process, the charcoal is mixe…
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- xix, 57 hlm. : ilus. ; 21 cm
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- T541272021
SINTESIS KOMPOSIT HIDROKSI LAPIS GANDA Mg-Al/ASAM HUMAT SEBAGAI ADSORBEN ION …
Telah dilakukan sintesis hidroksida lapis ganda Mg-Al dan komposit Mg-Al/asam humat. Material hasil preparasi dikarakterisasi menggunakan analisis XRD, FT-IR dan BET. Hasil analisis XRD komposit Mg-Al/asam humat menunjukkan adanya puncak difraksi pada sudut sekitar 11° dan 60° yang merupakan karakteristik dari material berlapis dari LDH MgAl, serta difraksi disekitar 20° yang merupakan ciri …
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- xvii, 76 hlm. ;ilus. ; 21 cm
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- T582762021
ISOLASI SENYAWA METABOLIT SEKUNDER DARI BATANG TUMBUHAN Vitex pinnata DAN UJI…
Vitex pinnata merupakan salah satu tumbuhan tropis dan sub-tropis yang dilaporkan memiliki berbagai bioaktivitas. Pengujian aktivitas penghambatan enzim α-glukosidase dan kandungan senyawa dari batang tumbuhan V. pinnata belum pernah dilaporkan sebelumnya. Berdasarkan hal tersebut penelitian ini dilakukan untuk mengisolasi senyawa metabolit sekunder dan uji aktivitas antidiabetes menggunakan e…
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- xviii, 65 hlm. : ilus.; 21 cm
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- T581832021
ADSORPSI ION LOGAM Cr(VI) OLEH KOMPOSIT HIDROKSI LAPIS GANDA Ni-Al/ASAM HUMAT
Hidroksi lapis ganda merupakan material yang bersifat fleksibel dan mudah dimodifikasi, yang mana dalam hal ini dimodifikasi sebagai material komposit menggunakan asam humat dengan metode kopresipitasi yang dikarakterisasi menggunakan analisis XRD, FT-IR dan BET. Adsorben hasil preparasi selanjutnya digunakan dalam proses adsorpsi ion logam Cr(VI) dengan mengamati variasi pH, waktu, konsentrasi…
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- xx, 82 hlm.; Ilus. ; 21 cm
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- T582342021
SINTESIS KOMPOSIT SnO2-MnO SERTA APLIKASINYA SEBAGAI FOTOKATALIS ZAT WARNA ME…
The research of synthesis of the SnO2/MnO composites as photocatalyst to degrade methylene blue has been done. The photodegradation process of methylene blue was carried out with two types variables including the effect of time and the initial concentration of the dye and conditions under pHpzc. Composites were made with mass ratio of SnO2 to MnO (1 : 0.02), (1 : 0.04) and (1’:’0.07) were c…
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- xviii, 68 hlm. : ilus.; 21 cm
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- T574522021
ISOLASI SENYAWA -SITOSTENON DARI FRAKSI n-HEKSANA KAYU BATANG TUMBUHAN VIT…
Vitex pinnata merupakan tumbuhan tropis berasal dari famili Verbenaceae. Penelitian ini bertujuan untuk mengisolasi senyawa metabolit sekunder dan menentukan aktivitas antibakteri kayu batang tumbuhan ini terhadap Staphylococcus aureus ATCC 25923 dan Streptococcus pneumoniae ATCC 49619. Proses pemurnian dilakukan dengan cara ekstraksi (maserasi) menggunakan pelarut metanol destilasi, fraksinasi…
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- xviii, 69 hlm.: ilus. ; 21 cm
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- T581492021
DEGRADASI FOTOKATALITIK ZAT WARNA METILEN BIRU MENGGUNAKAN NANOMAGNETIK FE3O4…
Synthesis of Fe3O4, Fe3O4-SiO2 and Fe3O4-SiO2-NiO naomagnetic had been carried out using coprecipitation and solvothermal methods. Fe3O4, Fe3O4-SiO2 and Fe3O4-SiO2-NiO nanomagnets were applied to degrade methylene blue dye. Fe3O4, Fe3O4-SiO2 and Fe3O4-SiO2-NiO nanomagnets were characterized using XRD, SEM-EDS, VSM and DRS. The XRD pattern shows that the sample is composed of Fe3O4, Fe3O4-SiO2 a…
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- xviii, 61 hlm. : ilus. ; 21 cm
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- T548612021
KARAKTERISTIK BIOBRIKET TANDAN KOSONG KELAPA SAWIT (TKKS) DENGAN VARIASI KONS…
This study determined the effect of sulfuric acid concentration and kepok banana peel on the characteristics of biobriquettes according to SNI 01-6235-2000 and with varying concentrations of sulfuric acid 1, 1.5 and 2N and kepok banana peel 2, 3 and 4 grams. The measured parameters consist of levels; water, ash, volatile matter, carbon and calorific value. Determination of calorific value using…
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- xvii, 63 hlm. :ilus. ; 21 cm
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- T581722021
PEMBUATAN KARBON DARI DAGING BUAH TIMUN SURI (CURCUMIS LATIVUS L.) DAN APLIKA…
Research has been conducted on the manufacture of carbon curcumber pulp (Curcumis lativus L.) and its application as an electrochemical double-layer capacitors. This study aims to electrochemically product carbon from curcumber pulp (DTS) with variations in the type of electrolyte concentration NaNO3 (sodium nitrate). Carbon DTS was made by the carbonization process for 16 hours and mircowave d…
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- xvii, 71 hlm. : ilus. ; 21 cm
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- T571552021
INKORPORASI EKSTRAK ETANOL DAUN JERUK PURUT (Citrus hystrix) PADA PEMBUATAN M…
Research had been carried out on the making of the anti acne peel off gel mask using kaffir lime leaves ethanol extract as active ingredient. Maceration method was used to extract the crude extract. Concentrated crude extract’s chemical compound was determined using phytochemical analysis and GC-MS. Its antibacterial activity was tested against Staphylococcus aureus and Propionibacterium acne…
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- xvii, 67 hlm. :ilus. ; 21 cm
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- T574702021
UJI AKTIVITAS ENZIM AZOREDUKTASE EKSTRASELULER DARI BAKTERI PSEUDOMONAS STUTZERI
Extracellular azoreductase enzyme activity test has been carried out from the Pseudomonas stutzeri. P. stutzeri is bacteria bacteria that have the ability to decolorize azo dyes against methyl red dyes.This study aimed to examine the activity of the extracellular azoreductase enzyme from P. stutzeri. The azoreductase enzyme extract from P. Stutzeri was obtained by centrifugation of the liquid c…
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- xviii, 68 hlm. : ilus. ; 21 cm
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- T619662021
PRODUKSI HIDROGEN DARI AIR MENGGUNAKAN MEMBRANE ELECTRODE ASSEMBLY (MEA) DENG…
Hidrogen merupakan bahan bakar yang mendapatkan banyak perhatian untuk dikembangkan, karena merupakan bahan bakar yang ramah lingkungan dan berpotensi menggantikan bahan bakar fosil. Penelitian mengenai produksi hidrogen dari air menggunakan Membrane Electrode Assembly (MEA) dengan variasi luas permukaan dan jenis stack telah dilakukan. Penelitan ini menggunakan katalis Cu2O/C pada sisi anoda d…
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- xviii, 41 hlm. :ilus. ; 21 cm
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- T581982021
SINTESIS BIOCHAR DARI SERBUK GERGAJI KAYU DENGAN FE3O4 UNTUK ADSORPSI ION FOS…
Biochar-Fe3O4 composite has been successfully synthesized and characterizad using XRD, VSM, dan FTIR. The biochar in this study was made from wood sawdust and composited with Fe3O4 using theCo-precipitationmethod. Biochar-Fe3O4 composite used as adsorbent in the adsorption of phosphate ions studied through parameters of contact time and concentration phosphate ion. The optimum condition for pho…
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- xvi, 70 hlm. : ilus. ; 21 cm
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- T610962021
ISOLASI YEAST DARI AIR KELAPA YANG DIGUNAKAN SEBAGAI AGEN MIKROBA PADA FERMEN…
Research on the isolation and identification of coconut water yeast used as a source of microbial agents in assisting fermentation to produce ethanol has been done. The isolates selected were coconut water isolates from a dilution of 10-4 which were spread in YMA media which produced 48 yeast isolate colonies which were then selected based on macroscopic physiological differences to produce 20 …
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- xviii, 82 hlm. : ilus. ; 21 cm
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- T584702021
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