Alchemy Journal of Chemistry最新文献_第4页

Synthesis of Goethite (α-FeOOH) Pigment by Precipitation Method from Iron Lathe Waste 沉淀法合成针铁矿(α-FeOOH)颜料

Alchemy Journal of Chemistry Pub Date : 2018-10-30 DOI: 10.18860/AL.V6I2.7106

L. M. Khoiroh, E. . Nuraini, N. Aini

引用次数: 2

Kopling Oksidatif Eugenol Menggunakan Ekstrak Enzim Peroksidase dari Akar Tanaman Sawi Hijau serta Uji Bioaktivitasnya 绿锯木属植物酸过氧化物酶提取物的Eugenol氧化连接及其生物活性测试

Alchemy Journal of Chemistry Pub Date : 2018-01-30 DOI: 10.18860/AL.V5I3.3776

B. Ardiansah, A. Cahyana, W. P. Suwarso, Rianti Maryana, Siti Merly

引用次数: 0

ANALISIS HKSA SENYAWA ANTIDIABETIK TURUNAN TRIAZOLOPIPERAZIN AMIDA MENGGUNAKAN METODE SEMIEMPIRIK PM3 semly PM3法测定三唑嗪酰胺的抗糖尿病活性

Alchemy Journal of Chemistry Pub Date : 2018-01-16 DOI: 10.18860/al.v5i4.4045

A. Asmara, M.Eng. Mudasir, Dwi Siswanta

引用次数: 3

Isolasi dan Karakterisasi Hidroksiapatit dari Limbah Tulang Hewan 任何动物骨髓的分离和水力特性

Alchemy Journal of Chemistry Pub Date : 2018-01-16 DOI: 10.18860/al.v5i4.4705

Vina Amalia, Eko Prabowo Hadisantoso, Dede Hidayat, Riska Farah Diba, Muhamad Fahmi Dermawan, Siti Wilamah Tsaniyah

{"title":"Isolasi dan Karakterisasi Hidroksiapatit dari Limbah Tulang Hewan","authors":"Vina Amalia, Eko Prabowo Hadisantoso, Dede Hidayat, Riska Farah Diba, Muhamad Fahmi Dermawan, Siti Wilamah Tsaniyah","doi":"10.18860/al.v5i4.4705","DOIUrl":"https://doi.org/10.18860/al.v5i4.4705","url":null,"abstract":"Tulang vertebrata mengandung 60% kalsium fosfat. yang dapat dimanfaatkan sebagai bahan dasar hidroksiapatit. Hidroksiapatit merupakan material biokeramik yang memiliki sifat adsorpsi yang baik sehingga dapat dimanfaatkan sebagai adsorben. Penelitian ini bertujuan untuk mengisolasi dan mengkarakterisasi hidroksiapatit dari beberapa limbah tulang, yaitu tulang sapi, kambing, gurame, dan tongkol. Hidroksiapatit dari limbah tulang sapi dan kambing diisolasi dengan cara kalsinasi pada suhu 1000°C dan diaktivasi menggunakan Na 2 CO 3 . Isolasi hidroksiapatit dari limbah tulang gurame dan tulang tongkol tidak dilakukan kalsinasi hanya digunakan hidrolisis menggunakan NaOH. Karakterisasi menggunakan XRD menunjukkan bahwa telah terbentuk hidroksiapatit kristalin dari hasil isolasi tulang sapi dan kambing, dan terbentuk hidroksiapatit amorf dari hasil isolasi tulang gurame dan tongkol. Perbandingan Ca/P hidroksiapatit hasil isolasi dari tulang sapi, kambing, gurame, dan tongkol, masing-masing adalah 1,71; 1,79; 1,97 dan 1,86. Spektra IR hidroksiapatit menunjukkan adanya gugus –OH, PO 4 3- , dan CO 3 2- . Morfologi permukaan hidroksiapatit hasil isolasi berpori dengan ukuran partikel 1-2 µm.","PeriodicalId":31035,"journal":{"name":"Alchemy Journal of Chemistry","volume":"5 1","pages":"114-119"},"PeriodicalIF":0.0,"publicationDate":"2018-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43404403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Green Synthesis Senyawa Imina dari Vanillin and Anilina dengan Katalis Alami Air Jeruk Nipis (Citrus aurantifolia) 以香兰素和苯胺为原料，以尼皮斯黄水（枳壳）为天然催化剂绿色合成Senyawa亚胺

Alchemy Journal of Chemistry Pub Date : 2018-01-16 DOI: 10.18860/al.v5i4.4706

Nurush Shofi al Hakimi, Ahmand Hanapi, A. Fasya

引用次数: 0

Bioethanol Dehydration Process using NaOH-Activated Zeolite at Various Concentration and Zeolite Weight 不同浓度和分子筛重量的NaOH活化分子筛生物乙醇脱水工艺

Alchemy Journal of Chemistry Pub Date : 2018-01-09 DOI: 10.18860/AL.V4I1.3140

David Saidi, A. Jannah, A. Maunatin

{"title":"Bioethanol Dehydration Process using NaOH-Activated Zeolite at Various Concentration and Zeolite Weight","authors":"David Saidi, A. Jannah, A. Maunatin","doi":"10.18860/AL.V4I1.3140","DOIUrl":"https://doi.org/10.18860/AL.V4I1.3140","url":null,"abstract":"Utilization of molasses as basic material for producing bioethanol becomes one of the promising efforts to fulfill the demand of fuel and diminish the dependence upon fossil fuel that its availability is increasingly rare. However, ethanol produced from fermentation of molasses has low purity. The purity could be increased by using dehydration method and zeolite activated by NaOH and alum as alumina source. The research is aimed to know the dehydration process of bioethanol use NaOH-activated zeolite at various concentration and zeolite weight on the purification of bioethanol. In this research, the experiments could be categorized into 4 groups, they are activation of zeolite, fermentation, distillation, and dehydration process. Activation of natural zeolite performed by entering of sized 120-150 mesh zeolite powder was added to glass beaker that contains NaOH aqueous solution and followed by adding alum which took place at 80 ˚C for 8 hours and the final product calcinated at 600 ˚ C for 2 hour. Fermentation process was managed for 6 days and pH 5. Furthermore, bioethanol was separated by distillation method at 78,5 - 85 ˚C and followed by molecular sieve dehydration using zeolite activated by NaOH solution in variation of zeolite weight (30, 40 and 50 %) and NaOH concentration (1, 2, 3 dan 4 M). The amount of bioethanol was measured by gas chromatography method. Bioethanol concentration as fermentation product is 29,8 %. The result revealed that dehydration with 30% w.t zeolite activated by 2 M NaOH solution had the best activity in bioethanol purification with amount of bioethanol is 53,76 %, Increased Levels of Bioethanol (ILB) value is 80,39 % and Adsorption Capacity of Zeolite (ACZ) is 399,31 %. Keywords: bioethanol, concentration of NaOH, dehydration, molasses, molecular sieve, weight of zeolite","PeriodicalId":31035,"journal":{"name":"Alchemy Journal of Chemistry","volume":"4 1","pages":"32-38"},"PeriodicalIF":0.0,"publicationDate":"2018-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43206763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Synthesis and Characterization Titanium Dioxide (TiO2) Doped Vanadium(V) Using Solid State Method 固态法合成掺杂钒(V)的二氧化钛(TiO2)及其表征

Alchemy Journal of Chemistry Pub Date : 2018-01-09 DOI: 10.18860/AL.V4I1.3143

K. Mustofa, N. Aini, S. N. Khalifah

{"title":"Synthesis and Characterization Titanium Dioxide (TiO2) Doped Vanadium(V) Using Solid State Method","authors":"K. Mustofa, N. Aini, S. N. Khalifah","doi":"10.18860/AL.V4I1.3143","DOIUrl":"https://doi.org/10.18860/AL.V4I1.3143","url":null,"abstract":"TiO 2 Anatase activities should be increased from the UV to the visible light photocatalytic activity of TiO 2 to increase anatas. One efforts to optimize TiO 2 anatase activity is doping by using dopant vanadium(V). Synthesis method which is used in this research is a solid reaction method. The steps being taken in this methods include grinding and heating at high temperatures. Dopant concentrations of vanadium(V) which are used in the research was 0.3%, 0.5% and 0.7%. and the characterization used is X-ray diffraction and UV-Vis Diffuse Reflectance Spectroscopy. The result shows that there are a changing of particle size, band gap energy, and absorption of TiO 2 anatas wavelength because of dopan vanadium(V) addition. While TiO 2 ’s structure does not change. The crystal sizes of each TiO 2 without doping, V-TiO 2 0,3%, 0,5% and 0,7% are 53.21 nm, 47.67 nm, 79.65 nm dan 68.99 nm. Band gap energy of each TiO 2 without doping, V-TiO 2 0,3%, 0,5% dan 0,7% are 3.309 eV, 3.279 eV, 3.270 eV and 3.259 eV. While wavelength absorption of each TiO 2 without doping, V-TiO 2 0,3%, 0,5% and 0,7% are 374.9 nm, 378.4 nm, 379.5 nm and 380.8 nm. Keywords : Synthesis, titanium dioxide, vanadium(V), solid state method","PeriodicalId":31035,"journal":{"name":"Alchemy Journal of Chemistry","volume":"4 1","pages":"44-49"},"PeriodicalIF":0.0,"publicationDate":"2018-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41873798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Pemanfaatan Biosorben Batang Jagung Teraktivasi Asam Nitrat dan Asam Sulfat untuk Penurunan Angka Peroksida – Asam Lemak Bebas Minyak Goreng Bekas 玉米茎的生物递质使用是硝酸和硫酸，用于降低过氧化氢数字——不含旧食用油的脂肪酸

Alchemy Journal of Chemistry Pub Date : 2018-01-09 DOI: 10.18860/AL.V5I1.3685

Eny Yulianti, Rif'atul Mahmudah, Isna Royana

{"title":"Pemanfaatan Biosorben Batang Jagung Teraktivasi Asam Nitrat dan Asam Sulfat untuk Penurunan Angka Peroksida – Asam Lemak Bebas Minyak Goreng Bekas","authors":"Eny Yulianti, Rif'atul Mahmudah, Isna Royana","doi":"10.18860/AL.V5I1.3685","DOIUrl":"https://doi.org/10.18860/AL.V5I1.3685","url":null,"abstract":"Batang jagung merupakan limbah pertanian yang mengandung kadar selulosa tinggi yang dapat dimanfaatkan sebagai biosorben dalam pemurnian minyak goreng bekas. Penelitian ini akan mempelajari pengaruh konsentrasi asam sulfat dan asam nitrat sebagai aktivator biosorben terhadap penurunan angka peroksida dan asam lemak bebas (ALB) pada proses bleaching . Pembuatan biosorben dari batang jagung dilakukan dengan cara delignifikasi dan aktivasi kimia menggunakan aktivator asam sulfat dan asam nitrat dengan berbagai variasi konsentrasi. Pemurnian minyak goreng bekas dengan cara despicing , netralisasi dan bleaching .Hasil penelitian menunjukan bahwa biosorben batang jagung teraktivasi H 2 SO 4 dan HNO 3 yang digunakan pada proses bleaching minyak goreng bekas dapat menurunkan angka peroksida dan ALB. Penurunan angka peroksida terbesar pada proses bleaching oleh biosorben teraktivasi H 2 SO 4 10% dan teraktivasi HNO 3 1 M mencapai 9,53% dan 14,12%, berturut-turut. Penurunan terbesar kadar ALB pada proses bleaching sebesar 8,65% pada biosorben teraktivasi H 2 SO 4 20% dan 8,63% pada biosorben teraktivasi HNO 3 1 M. Hasil analisis spektra FTIR biosorben yang telah digunakan pada proses bleaching menunjukan adanya gugus fungsi baru C-H metilen (2855 cm -1 ) dan C=O ester (1742 cm -1 ) yang diduga merupakan peroksida dan ALB yang teradsorpsi secara kimia oleh biosorben. Hasil analisis statisitik ANOVA menunjukan bahwa variasi konsentrasi asam sulfat dan asam nitrat tidak mempunyai pengaruh terhadap penurunan angka peroksida, akan tetapi mempunyai pengaruh terhadap penurunan ALB","PeriodicalId":31035,"journal":{"name":"Alchemy Journal of Chemistry","volume":"5 1","pages":"9-18"},"PeriodicalIF":0.0,"publicationDate":"2018-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48839416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Ekstraksi, Hidrolisis dan Partisi Metabolit Sekunder dari Mikroalga Chlorella sp. 从sp微藻中提取、水解和次级代谢颗粒。

Alchemy Journal of Chemistry Pub Date : 2018-01-09 DOI: 10.18860/al.v5i1.3686

A. Fasya, Anike Riska Dinasti, Muharromatus Shofiyah, L. Rahmawati, N. Millati, Dany Aulia Safitri, S. Handoko, Ahmad Hanapi, Rachmawati Ningsih

引用次数: 4

Comparison of Ethanol Extract from Roots, Leaves, and Flowers of Calotropis gigantea as Anticancer on T47D Breast Cancer Cell Lines 巨脊藻根、叶、花乙醇提取物对T47D乳腺癌症细胞系抗癌作用的比较

Alchemy Journal of Chemistry Pub Date : 2018-01-09 DOI: 10.18860/AL.V5I1.3690

R. Mutiah, Sukardiman Sukardiman, A. Widyawaruyanti, S. Zulaikah

引用次数: 11