A5067507560- Heavy Metal Pollution Remediation
- Adsorption and biosorption for pollutant removal
- Coconut Research and Applications
- Recycling and Waste Management Techniques
- Essential Oils and Antimicrobial Activity
- Engineering and Technology Innovations
- Medicinal Plant Research
- Collagen: Extraction and Characterization
- X-ray Diffraction in Crystallography
- Food composition and properties
- Advanced Nanomaterials in Catalysis
- Phytochemistry and Biological Activities
- Natural product bioactivities and synthesis
- Education and Character Development
- Waste Management and Recycling
- Polysaccharides Composition and Applications
- Edcuational Technology Systems
- Chemical Synthesis and Characterization
- GABA and Rice Research
- Biofuel production and bioconversion
- Bioactive natural compounds
- Food and Agricultural Sciences
- Biodiesel Production and Applications
- Public Health and Nutrition
- Blockchain Technology in Education and Learning
Yogyakarta State University
2006-2023
Tujuan dari penelitian ini adalah untuk mengetahui (1) karakteristik karbon aktif tongkol jagung berdasarkan SNI 06-3730-1995, (2) pengaruh variasi massa bioadsorben terhadap penurunan kadar besi dan bromat, (3) laju alir dalam efisiensi adsorpsi bioadsorben, (4) menentukan (Ep) bromat pada air minum kemasan (AMDK). Metode dilakukan secara kontinyu dengan menggunakan kolom. AMDK (sampel) dialirkan gravitasi atas ke bawah melalui kolom yang telah diisi jagung. Karbon diaktivasi HCl 5%...
This study aims to determine the characteristics, effect of mass variation, percentage adsorption effectiveness cassava peel activated carbon with 0.5 M HCl and H2SO4 on Cr metal in leather tanning wastewater its morphology. The subject this research is adsorbent before it asctivated, by chloric acid 0,5 M, sulfuric M. meanwhile object effectiviness adsorbeny reduscing chromium content tannery liquid waste. Cassava pell was carbonized at 500 oC for 1 hour. characterized according SNI...
Penelitian ini bertujuan untuk mengetahui variasi massa adsorben dan laju alir yang paling optimum, efisiensi penjerapan (Ep), kapasitas adsorpsi tinggi, serta tipe dari karbon aktif teraktivasi ZnCl2 terhadap penyerapan logam Cu Zn dalam limbah simulasi menggunakan sistem kolom kontinyu. Metode dilakukan secara kontinyu dengan kolom. Limbah dialirkan gravitasi atas ke bawah melalui telah diisi adsorben. Subjek penelitian adalah daun pandan laut 5%. Sementara objek pada adsorpsi, 5% Zn....
This study aims to determine the quality and antibacterial activity of clove oil-solid soap production against three kinds bacteria. Soap was initiated by saponification reaction olive, palm, coconut castor oils with sodium hydroxide. Clove oil (2 3%) added saponizing as an agent. Quality test solid-soap based on Indonesian National Standard (INS) 2016. The in vitro Staphylococcus aureusATCC 25923, epidermidis FNCC 0048, Escherichia coli ATCC 11229 investigated using Kirby-Bauer Diffusion...
The leaves of Screw-pine (Pandanusodorifer) which contain natural cellulose were used as sources carbon to prepare activated carbon. Contained 28-30% water, the dried for 3-5 days by sunlight. pyrolysis process dry yielded 25.7% that was then followed grounding and sifting steps 80 mesh particle size. This uniform particles mixed with 5% HNO3 activator in batch system 24 hours. Physical activation conducted at 700°C obtained 70.8% characteristics compared base using porosimeter, referencing...
We report for the first time a technique in detection of chromium(VI) [Cr(VI)] ions using ultraviolet-visible (UV-Vis) spectrophotometer that involves silver nanoparticles (AgNPs) capped with formaldehyde-chitosan as sensor. Here, chitosan cross-linked formaldehyde produced an extra stability from aspect signal This study aimed to synthesise and characterise formaldehydechitosan stabilised AgNPs (formaldehyde-chitosan@AgNPs) apply them Cr(VI) ion sensors. The linearity formaldehyde-chitosan@...
The treatment of industrial wastewater and household waste using the electrocoagulation method with aluminum electrodes aims to determine optimal time voltage reduce iron content, manganese TDS from waste. used in this study was electrodes. object research reduction content optimization test electric carried out at variations 5, 10, 15 volts 1, 3, 6, 9, 12 hours. Then samples were analyzed Atomic Absorption Spectroscopy (AAS), pH meter meter. results showed that hours volts. After process,...
The aim of this research is to determine the optimum time reaction and concentration hydroxide ion on chalcone, 4-methoxychalcone 3,4-dimethoxychalcone synthesis. Chalcone its derivatives were synthesized by dissolving KOH in ethanol followed dropwise addition acetophenone benzaldehyde. Then, mixture was stirred for several hours. Three benzaldehydes has been used, i.e : benzaldehyde, p-anysaldehyde veratraldehyde. varied for, 12, 18, 24, 30 36 Furthermore, each benzaldehyde hydroxyl from...
This research aims to characterize activated NaOH carbon of sea pandanus leaves (P. odorifer) which include water content, ash volatile content and adsorption capacity iodine. Further, we investigate Fe3+ Cu2+ ions, its type. Sea was taken from Trisik Beach in Kulonprogo. The carbonation process is carried out at a temperature 500 °C, followed by chemical activation using 1% solution physical with 700 °C while dioxide gas flowed for 2 hours. Identification heavy metals conducted batch....
Syzygium aromaticum essential oil (clove oil) has a promising potential as an antifungal. However, the never been applied in bath soaps. This study aimed to produce antifungal natural soap using clove additive. Natural containing was made through cold saponification reaction of vegetable oils, sodium hydroxide, and various contents (1, 2, 3% w/w) agent. The quality tested based on Indonesian National Standards (INS), including water content, total fat, insoluble matters ethanol, free alkali,...
Abstrak Penelitian ini bertujuan mengetahui pengaruh suhu dan waktu proses transesterifikasi terhadap karakter biodiesel hasil sintesa dari minyak biji ketapang. Karakter dilakukan menggunakan standar SNI. di laboratorium Kimia, Jurusan Pendidikan FMIPA UNY, sedangkan pengujian Laboratorium Teknologi Minyak Bumi, Gas, Batubara, teknik Fakultas UGM. Sintesa ketapang melalui dua (2) tahap. Tahap pertama adalah pengambilan ketapan, tahap kedua dengan metanol. Proses dilaksanakan pada berbagai...
Chromium-containing silicalite-1, designed CrS-1, was synthesized by the hydrothermal method and characterized XRD FTIR techniques. The objectives of research are to study synthesis CrS-1 investigate effect crystallization temperatures times toward its character. All samples crystallized in orthorhombic structure Pnma space group. phase observed patterns from 150 190 oC for 11 days showed only MFI-type phase. prepared under static condition 1 day at indicated -SiO2 phase, on contrary,...
Abstract This research aims to prepare an adsorbent from Kelud volcanic ash for better Cu(II) adsorption efficiency than Kiesel gel 60G E'Merck. Adsorbent synthesis was done by dissolving 6 grams of activated 700oC 4 hours and washed with HCl 0.1 M into 200 ml 3M sodium hydroxide stirring heating 100 °C 1 hour. The filtrate silicate then neutralized using sulfuric acid. mixture allowed stand 24 filtered aquaDM, dried crushed. procedure is repeated nitric acid, acetic acid formic a contact...
Abstract Interaction time significantly influenced the pattern of adsorption.This study aims to determine characteristic activated charcoal adsorbent, decrease in phenol levels and its adsorption capacity, test adsorbent applicability remove from batik wastewater. The concentration was measured by UV-Vis spectrophotometer. results showed that characters accordance with Indonesian National Standard (INS) 06-3730-1995. Its were water content, ash content iodine power. Characterization using...
Penelitian ini memaparkan daun pandan laut sebagai alternatif baru bahan untuk membuat arang aktif, serta identifikasi kemampuan adsorpsinya secara sistem kolom. Daun mengalami proses pemanasan hingga menjadi arang, dilanjutkan dengan aktivasi kimia menggunakan larutan natrium hidroksida 1% dan fisika dialiri gas karbon dioksida. Arang aktif hasil sintesis dianalisis kondisi optimum kolom, yang meliputi massa laju alir. Selanjutnya pada optimumnya, diuji daya adsorpsi terhadap ion Fe3+....
Penelitian ini bertujuan untuk mengetahui waktu kontak dan konsentrasi yang paling optimum pada adsorpsi arang aktif daun pandan laut teraktivasi NaOH 1% terhadap ion multilogam Cu2+, Fe3+, Ni2+ Zn2+ efisiensi dari adsorben Zn2+. Subjek dalam penelitian adalah objek Adsorpsi dilakukan dengan mengkondisikan variasi multilogam. Konsentrasi sebelum sesudah diukur Atomic Absorption Spectrophotometer (AAS). Hasil menunjukkan bahwa sebesar 60 menit berturut-turut 100, 250, 75 ppm 99,606 %, 98,871...
7, This research with the title Thin Layer Chromatography for Determination of Hesperidins Content in Orange Peel has been done organic chemistry laboratory. The aim this research is to select the solvent mix for best hesperidins standard peak result and determinate content (in relative percentage) some orange peel. isolation from peel conduct by soaks piece f 0% Calcium hydroxide solution a night room temperature. The mixture ...
The objectives of this research are to identify whether the bioactivecompound of methanol fraction extracts Sargasum sp can be used as anti hepatotoxic and to determine the dose such compound in order that it may be used hepatotoxic. The population in this research was 2-month male white rats with almost similar weight. 39 were taken for samples. Treating CCl4 injection carried out bioactive activity test treatment these extracts observed by examining liver cell damage...
This study aims to determine whether or not biosorben synthesized from sea pandanus leaves, the influence of type acid used, optimum adsorption efficiency Cr and Pb metal ions various wastes, as well synthesis results character. The subjects were Pandanus tectorius types Java's southern coast. objects are adsorptive properties character before after activation. Purposive sampling is used technique. independent variables activator (HCl H 2 SO 4 ) waste water. dependent nature results. was...
The synthesis of biodiesel targeted as SNI 04-7182-2006 standard has been done from kapuk randu seed, following two steps i.e. sokhlet extraction process seed oil using n-heksane a solvent, and the production by transesterification methanol KOH catalyst. Transesterificatin was performed at temperature 50 oC with variation stirring duration followed 50, 75, 100 125 minutes. resulted % oil, while transestherification around 55 - 65%. product characteristics provided density value all durations...
Abstrak penelitian ini bertujuan untuk mengetahui pengaruh konsentrasi formaldehid sebagai agen perduksi terhadap efisiensi elektrodeposisi ion Ag + dalam limbah cair elektroplating dan karakter logam hasil elektrodeposisi. Proses dengan elektroda platina anoda katoda. Konsentrasi larutan divariasi yaitu 0,4; 0,3; 0,2; 0,1 M tanpa penambahan formaldehid. Ion yang masih tersisa elekroplating dilakukan analisis menggunakan AAS. Untuk struktur kristal deposit XRD. Hasil diperoleh kesimpulan...