APLIKASI METODE POTENSIOMETRI SEL KONSENTRASI UNTUK ANALISIS ION SENG (II) DA…

Zinc ion analysis in Sekanak River has been conducted using concentration cell potentiometric method. This method is proven valid because it has a correlation coefficient of 0.9980 linear area in the concentration range of 1x10-5 to 3x10-2 mol/L. The resulting precision was 0.9% with an average recovery value of 93.44%. In addition, the limit of detection (LoD) of the method was 1.03x10-6 mol/L…

APLIKASI METODE POTENSIOMETRI SEL KONSENTRASI UNTUK ANALISIS LOGAM TIMBAL (PB…

Validation of the potentiometric cell concentration method and analysis of lead metal in Sekanak river sediments has been carried out. The aims research to validate the concentration cell potentiometric method in determining lead metal (Pb) in sediments and determine the distribution of lead metal (Pb) in Sekanak river sediments. The concentration cell potentiometric method was proven to be val…

SINTESIS NANOPARTIKEL PERAK (NPAg) MENGGUNAKAN EKSTRAK KULIT BATANG ANTIDESMA…

Silver nanoparticles (AgNPs) are used as an alternative way to overcome antibiotic resistance because silver nanoparticles have antibacterial properties. Therefore, this research aimed to synthesize silver nanoparticles with an environmentally friendly method using bark extract of Sendulang (Antidesma ghaesembilla) and antibacterial activity against Staphylococcus aureus and Escherichia coli. T…

UJI AKTIVITAS ANTIOKSIDAN EKSTRAK METANOL KUNYIT (Curcuma longa) DAN EFEK KOM…

SUMMARY ANTIOXIDANT ACTIVITY TEST OF METHANOL EXTRACT OF TURMERIC (Curcuma longa) AND ITS COMBINATION EFFECTS Herlina: supervised by Dra. Julinar, M.Si. and Dr. Zainal Fanani, M.Si. Chemistry, Faculty of Mathematics and Natural Sciences, University of Sriwijaya xv + 31 pages, 4 figures, 4 tables, 5 appendices Turmeric (Curcuma longa) is one of the medicinal plants from the Zingiberaceae family …

PENGARUH KANDUNGAN Fe DALAM Fe/C TERHADAP SIFAT PRODUK HYDROCRACKING BATUBARA…

Fossil-based fuels such as petroleum remain the primary energy source in Indonesia, particularly in the transportation sector. Continuous economic growth has led to increased consumption of these fuels. Coal is used as an alternative energy source. The purpose of this research is to develop a method for improving the quality of lignite coal through pyrolysis and hydrocracking processes, thereby…

STANDARDISASI EKSTRAK ETANOL TUMBUHAN DAUN PACAR KUKU (Lawsonia Inermis L.)

According to pharmacological studies, henna leaves are reported to have various activities, including antibacterial, antifungal, antitumor, antiproliferative, antiangiogenic, antileishmanial, hepatoprotective anti-irritant, antioxidant, anticarcinogenic, anti-inflammatory, analgesic, antipyretic, and antioxidant. In addition, henna plants are reported to contain phenolic compounds (isoplumbagin…

PENGARUH PENAMBAHAN BIOBASED COOKING AID TERHADAP KUALITAS UNBLEACHED PULP DE…

Wood is the main and most expensive raw material in pulp production; therefore, its processing must be optimized for sustainability. The absorption of cooking liquor into wood chips is crucial to ensure optimal delignification. Improvements can be achieved through an impregnation stage before cooking to ensure even liquor penetration, as well as by using cooking aids that reduce surface tension…

SINTESIS OKSIDA GRAFENA TEREDUKSI DARI SEKAM PADI DAN APLIKASINYA UNTUK ADSOR…

Edition

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ISBN/ISSN

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Collation

xv, 42 hlm.; ilus.; 29 cm

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Call Number

T1598252024

PENGARUH KONSENTRASI ELEKTROLIT NaNO₃ DENGAN PELARUT (DMSO DAN H₂O) TERHA…

This research is motivated by the use of sodium ion batteries as an alternative to lithium ion batteries, as they share similar properties and characteristics but are cheaper, more environmentally friendly, and made from more abundant raw materials. In general, the components of a battery cell consist of electrodes, electrolyte, and separator. The electrodes include a positive electrode (anode)…

DEOKSIGENASI ASAM OLEAT MENJADI BIOAVTUR MENGGUNAKAN KATALIS BENTONIT BERPILA…

The depletion of fossil fuel resources and the increasing environmental crisis caused by greenhouse gas emissions have driven the search for renewable and environmentally friendly alternative fuels. The aviation sector still relies on fossil fuels and produces high greenhouse gas emissions, so it is necessary to develop aviation fuels from renewable sources. Bioavtur is one alternative that can…

PENENTUAN SIFAT ANTIOKSIDAN DAN ANTIBAKTERI DARI EKOENZIM CAMPURAN LIMBAH KUL…

Organic waste is the largest contributing component of the total waste that ends up in landfills. This waste accumulation causes various problems, including being a source of various diseases and a cause of soil and water pollution. The production of eco-enzymes is an effective and efficient solution for managing organic waste by converting it into a multi-purpose liquid through a fermentation …

PATI RESISTEN DAN SIFAT PREBIOTIK Chlorella TERHADAP PERTUMBUHAN BAKTERI Lact…

This study aims to determine the levels of resistant starch, its effectiveness as a prebiotic, and its effect on the growth of L. rhamnosus bacteria as well as to identify the potential antibacterial activity of L. rhamnosus bacteria grown on Chlorella by Now Foods media. The methods used include determining the levels of resistant starch using the multi-enzyme method, testing prebiotic activit…

OPTIMASI ADSORPSI ION Mn MENGGUNAKAN KOMPOSIT CaO/Fe3O4 DENGAN RESPONSE SURFA…

Acid Mine Drainage (AMD) occurs as a result of runoff formed from the oxidation of sulfide minerals that are exposed to atmospheric air and mix with water. AMD is one of the causes of environmental pollution, making its treatment essential to reduce the negative impacts it causes. One of the methods used is the adsorption method. Adsorption is employed because it is a simple and low-cost proces…

PENGARUH PRETREATMENT TKKS MENGGUNAKAN IONIC LIQUIDS DILANJUTKAN HIDROLISIS D…

This study investigated the pretreatment of Oil Palm Empty Fruit Bunches (OPEFB) using ionic liquids (ILs) to understand their impact on reducing sugars produced during hydrolysis. The pretreatment of OPEFB was conducted with imidazolium chloride [IM][Cl] ILs at varying weights of 2.5 g, 5 g, 7.5 g, and 10 g, followed by hydrolysis with 2% dilute sulfuric acid. The lignin, cellulose, and hemice…

EVALUASI HASIL FITOREMEDIASI LOGAM BESI (Fe) DAN MANGAN (Mn) MENGGUNAKAN TANA…

Coal mining activities have had both positive and negative impacts on the surrounding environment. Acid mine drainage (AMD) is a negative impact of the mining process. Acid mine drainage contains heavy metals Fe and Mn which can disrupt aquatic ecosystems. The AMD treatment is carried out by PT Bukit Asam through a Sludge Settling Pond (KPL). The treatment of AMD is divided into two methods, na…

PENENTUAN KINETIKA ENZIM SELULASE DAN APLIKASINYA TERHADAP TANDAN KOSONG KELA…

This study utilizes TKKS, which is rich in cellulose and has the potential to be processed into glucose. The conversion of cellulose into glucose is carried out through enzymatic hydrolysis. The kinetics of hydrolysis is determined using the Michaelis-Menten equation and transformed into the Lineweaver-Burk method to obtain Vmax and Km parameters. The research findings show that enzyme activity…

PENENTUAN KINETIKA ENZIM SELULASE DAN APLIKASINYA TERHADAP TANDAN KOSONG KELA…

This study utilizes TKKS, which is rich in cellulose and has the potential to be processed into glucose. The conversion of cellulose into glucose is carried out through enzymatic hydrolysis. The kinetics of hydrolysis is determined using the Michaelis-Menten equation and transformed into the Lineweaver-Burk method to obtain Vmax and Km parameters. The research findings show that enzyme activity…

PRETREATMENT TANDAN KOSONG KELAPA SAWIT (TKKS) MENGGUNAKAN PELARUT IONIC LIQU…

This study aimed to determine the effect of temperature and heating time on the pretreatment of Oil Palm Empty Fruit Bunches (OPEFB). The pretreatment process was carried out to delignify the OPEFB using ionic liquid in the form of 1-Butyl-3-Methylimidazolium Chloride. Analysis of hemicellulose, cellulose and lignin content using the Chesson method. The optimal condition of the delignification …

KARAKTERISASI DAN UJI AKTIVITAS ANTIBAKTERI DARI KOMBUCHA KOMBINASI DAUN SIRS…

Kombucha is known as a functional drink that contains various vitamins, minerals, enzymes and organic acids. This drink is mostly made from fermented tea and can be combined with other ingredients. This study aimed to produce a combination kombucha of soursop leaves (Annona muricata L.) and mangosteen peel (Garcinia mangostana L.). This study determines the content of secondary metabolite compo…

KARAKTERISASI DAN UJI AKTIVITAS ANTIBAKTERI KOMBUCHA DIKOMBINASI DENGAN BIJI …

Tea can be processed into kombucha through a fermentation process. Kombucha is made by fermenting a solution of black tea, sugar and a kombucha culture called SCOBY (Symbiotic Culture of Bacteria and Yeast). One of the innovations in kombucha processing is the combination with avocado seeds (Persea americana Mill.) and bay leaves (Syzygium polyanthum (Wight.)) in the second fermentation. This s…

KARAKTERISASI DAN UJI AKTIVITAS ANTIBAKTERI DARI KOMBINASI KOMBUCHA APEL (Mal…

Kombucha is a fermented beverage of green tea or black tea using SCOBY (Symbiotic Culture of Bacteria and Yeast). Kombucha provides benefits for stimulating the immune system, improving digestive tract function and preventing microbial infections due to the presence of antibacterial compounds. Antibacterial activity can be enhanced by utilizing secondary metabolites in fruits such as apple (Mal…

PRODUKSI DAN PEMURNIAN ENZIM AMILASE DARI BAKTERI Bacillus licheniformis TS-1…

Amylase enzyme is an extracellular enzyme that can hydrolyze the internal bond of α 1,4-glucan in starch and is also one of the enzymes widely used in the industrial field. In industries that use enzymes, thermostable amylases with low substrate costs are the main choice because they can work at 60-120ºC and are usually produced by thermophilic bacteria. For certain purposes enzymes are often…

PRODUKSI ENZIM PROTEASE DARI ISOLAT BAKTERI Bacillus licheniformis TS-17 DAN …

Protease is an enzyme that can catalyze hydrolysis reactions to break down protein molecules into peptides and amino acids. Microorganisms, such as fungi, yeast, and bacteria can produce proteases. One of the bacteria that can produce protease is Bacillus licheniformis TS-17 isolated from the Tanjung Sakti Lahat Hot Springs. The protease produced was a thermostable protease resistant to high te…

ANALISA LOGAM TIMBAL (Pb) PADA TANAMAN ECENG GONDOK (Eichhornia crassipes) DI…

Concentration cell potentiometry is a chemical analysis based on cell potential measurements to determine the concentration of an analyte. A concentration cell consists of two half-cells of the same material but with different concentrations. In this study, lead metal analysis was carried out on water hyacinth plants (Eichhornia crassipes) in the Ogan River using concentration cell potentiometr…

UJI AKTIVITAS ANTIOKSIDAN TERHADAP EKSTRAK BUNGA BOUGENVILLE ORANGE (Bougainv…

The bougenville orange (Bougainvillea x buttiana) has been reported to have antioxidant activity using the DPPH method. Testing antioxidant activity can be carried out using various methods. In this study, the antioxidant activity of orange bougenlille (Bougainvillea x buttiana) flower was tested using three methods, namely the DPPH (2,2-diphenyl-1-picrylhydrazyl), FRAP (Ferric Reducing Antioxi…

UJI AKTIVITAS ANTIOKSIDAN FRAKSI DAUN PACAR KUKU (Lawsonia inermis L) MENGGUN…

Pacar kuku (Lawsonia inermis) is a traditional medicinal plant that is rich in phenolic compounds which are generally active as antioxidants. Measuring antioxidant activity can be done using various methods. In this study, the antioxidant activity of L. inermis leaves were determined using the DPPH (2,2-diphenyl-1-picrylhydrazyl), FRAP (Ferric Reducing Antioxidant Power) and FTC (Ferric Thiocya…

PENGARUH GRAPHENE OXIDE SEBAGAI SUPPORT KATALIS PLATINUM UNTUK KATODE PROTON …

Fuel cells have now become a primary focus as a promising future energy source. In particular, proton exchange membrane fuel cell (PEMFC) technology holds broad application potential and is predicted to play a significant role in future energy systems. This study aims to characterize platinum catalysts supported by graphene oxide (GO) and to determine the effect of GO on the cathode performance…

PEMANFAATAN PALM KERNEL OIL (PKO) DAN VIRGIN RED PALM OIL (VRPO) UNTUK PEMBUA…

Soap has become an important need among the people. Soap is used daily. The production of bath soap made from natural ingredients is still rarely found on the market. Most of those scattered still use synthetic ingredients as their active ingredients. Research on the Utilization of Palm Kernel Oil (PKO) and Virgin Red Palm Oil (VRPO) for Making Solid Soap and Quality Tests have been carried out…

PENGARUH PENAMBAHAN ETANOL TERHADAP PENINGKATAN KUALITAS GASOLINE RON 92 MENU…

The analysis of the effect of ethanol addition on the quality of RON 92 gasoline in achieving RON 98 gasoline specifications had been conducted at the laboratory of PT Kilang Pertamina Internasional RU III. This study aimed to produce RON 98 gasoline by blending ethanol into RON 92 gasoline. RON 92 gasoline, commonly known as Pertamax, is obtained by mixing 92% HOMC and 8% LOMC components. In t…

PREPARASI KOMPOSIT GRAFIT/MnO2 DAN APLIKASINYA SEBAGAI ADSORBEN PADA ADSORPSI…

The small and medium-sized textile enterprises (SMEs) have experienced significant development; however, they still generate wastewater that is discharged directly into water bodies without adequate treatment. Therefore, an effective waste management method is required, one of which is adsorption using composite materials. The composite was prepared using graphite, KMnO₄, and manganese (II) a…