TEKNIK Pengecoran LOGAM

Edition

-

ISBN/ISSN

978-602-260-030-5

Collation

xiv, 268 hlm. : ilus. ; 23 cm

Series Title

-

Call Number

671 Sur t

Pengerjaan Logam dengan Perkakas Tangan dan Mesin Sederhana

Edition

Revisi

ISBN/ISSN

978-979-665-802-2

Collation

vi, 356 hlm. : ilus. ; 25 cm

Series Title

-

Call Number

669.95 Sch p

KINETIKA DELIGNIFIKASI BATANG PISANG YANG DIBERI PRAPERLAKUAN ALKALINE MICROW…

Banana stem waste is a source of lignocellulose biomass with high cellulose content and abundant availability in Indonesia. In this study will investigate the kinetics of delignification of banana stems given alkaline pretreatment and alkaline microwave-assisted. Banana stem waste is given preliminary treatment with the help of alkaline and microwave alkaline so that lignin levels contained in …

Pengantar untuk Memahami Proses Pengelasan Logam

Edition

-

ISBN/ISSN

979-8433-99-4

Collation

iii,144 hlm.: ilus.; 24 cm

Series Title

-

Call Number

669.028 Son p

PENGARUH PERBEDAAN NILAI VISKOSITAS MEDIA PENDINGIN OLI PADA PERLAKUAN PANAS …

Common brass is an alloy of copper and zinc. Common brass hardness is very important in the world of machinery, with quenching treatment will affect the mechanical properties of common brass. This study aims to determine the effect of the quenching process using oil coolers (viscosity variations) on the mechanical properties (hardness) of common brass metal. The quenching process was carried ou…

PENGARUH PROSES QUENCHING PADA LOGAM ST 37 DENGAN PENAMBAHAN EKSTRAK DAUN PEP…

Quenching is one of the heat treatment techniques used to produce metals with a higher hardness level. This study aims to determine the effect of the addition of papaya leaf extract on the corrosion rate of ST 37 steel and quenching. This research is an experiment. Five specimens to be tested using a quenching process with papaya leaf extract with varying concentrations of 100%, 80%, 60%, 40% a…

TEKNOLOGI KERJA LOGAM

Edition

-

ISBN/ISSN

37-02-003-9

Collation

vii, 129 hlm. ; 20 cm

Series Title

-

Call Number

624.182 Ste t

ABSORPSI LOGAM BERAT Zn DAN Cr MENGGUNAKAN PURUN DANAU (Lepironia articulata …

Open-pit coal mining will encourage the oxidation of sulfide minerals, releasing sulfuric acid, which will drastically lower the pH. This occurrence is known as acid mine drainage. Acid Mine Drainage (AMD) has a low pH value and can easily dissolve heavy metals in water, such as Zn and Cr. Control of acid mine drainage needs to be done either during or after the mining process ends. Acid mine d…

POTENSI RHIZOPHORA APICULATA BLUME.DALAM FITOREMEDIASI LOGAM BERAT PB DAN CU …

The Mangrove Forest Nature Reserve East Coast (CAHBPT) in Jambi Province has functions, one of which is to improve water quality by absorbing dangerous heavy metals such as Pb and Cu which originate from human activities around the waters. This absorption can be done by using plants that can live in extreme conditions such as the Rhizophora apiculata Blume. plant in CAHBPT Jambi. The purpose of…

ANALISIS KANDUNGAN LOGAM BERAT NIKEL (Ni) DAN TIMBAL (Pb) PADA AIR DAN SEDIME…

The purpose of this study was to determine the status of water quality of the Musi River estuary seen from the value of heavy metals in accordance with PPRI No. 22 of 2021. This research was conducted in December 2022, water and sediment samples were carried out at five station points. Heavy metal concentrations were analyzed using SSA. The content of Ni in water range from 0.018 – 0.053 mg/L…

ANALISIS KANDUNGAN LOGAM BERAT Cd DAN Zn DI SEDIMEN MUARA SUNGAI MUSI, KABUPA…

The Musi River estuary is one of several river mouths that empties into the East Coast of Banyuasin, South Sumatra. The Musi River estuary accommodates various components of pollutant that enter through the river flow. The purpose of this study was to analyze and study the quality of the waters of the Musi River estuary based on the concentration of heavy metals Cd and Zn in sediments and to de…

PERBANDINGAN METODE SPEKTROFOTOMETRI VISIBLE DAN POTENSIOMETRI TERHADAP ANALI…

This research compares the methods of iron metal analysis Fe2+ ions using visible spectroscopy and concentration cell potentiometry. The visible spectroscopy method needs to be verified, and the potentiometry method needs to be validated based on ISO 17025:2017, with parameters of linearity, sensitivity, detection limit, quantification limit, accuracy, precision, and measurement uncertainty. Th…

PENGARUH DIMENSI DALAM PEMBUATAN AGREGAT BERBAHAN DASARFLY ASH DENGAN TEKNIK …

This study aims to analyze the influence of dimensions in the manufacture of artificial aggregates made from fly ash using heating techniques. This aggregate is made by combining several other materials through physical and mechanical processes similar to natural aggregates. In this study the materials used for the manufacture of aggregates are fly ash, clay and water. The method used is the he…

PERBANDINGAN METODE KONDUKTOMETRI DAN SPEKTROFOTOMETRI UV-Vis TERHADAP ANALIS…

Human activities such as industrial, agricultural, and household activities around the Musi river can cause contamination of heavy metals into the Musi river body. Iron is a type of heavy metal that can pollute the environment. Therefore, it is necessary to test the iron content in Musi River water as an effort to prevent water pollution. This research aims to compare the conductometric and spe…

PERBANDINGAN METODE KONDUKTOMETRI DAN SPEKTROFOTOMETRI UV-VIS TERHADAP ANALIS…

Contamination of bored well water has a serious impact on the environment and human health. Zinc (II) metal is one of the heavy metals that can contaminate bored well water. Zinc (II) metal ions can be analyzed using conductometric and UV-Vis spectrophotometric methods. This study aims to compare the conductometric method and the UV-Vis spectrophotometric method to the analysis of zinc metal (I…

SPESIASI ION LOGAM Pb2+ dan Pb4+ DI PERAIRAN DANAU TELUK GELAM OGAN KOMERING …

ABSTRACT : This research aims to determine the levels of lead (II) and lead (IV) metal ion species by potentiometric methods using concentration cells and study the distribution of lead (II) and lead (IV) metal ions in the waters of Teluk Gelam Lake. The results showed the linear regression equation for metal ion of lead (II) y = 4.9162x+0.4 while lead (IV) y = 6.1105x+0.88 with R2 values 0.999…

POTENSI BIOCHAR KULIT PISANG LILIN (Musa zebrina Van Hautte) SEBAGAI ADSORBEN…

Textile industry waste is one of the sources of heavy metal pollution resulting from the dyeing and dyeing process. Jumputan fabric waste water contains one heavy metal chromium (Cr) of 1.360 mg/L. Reducing chromium levels can be done by adsorption method using adsorbents from wax banana peels. Wax banana peels contain pectin and cellulose which have the potential to absorb heavy metals. This s…

ANALISIS KEKUATAN BENDING STRUKTUR SANDWICH DENGAN CORE ALUMUNIUM DAN SKIN PL…

Pemanfaatan struktur sandwich alumunium dengan lapisan skin besi telah meningkat pesat di industri Indonesia, terutama dalam manufaktur dan penelitian bahan. Material struktur sandwich menarik perhatian peneliti karena kombinasi kekuatan tinggi dan bobot yang ringan. Tujuan penelitian ini adalah merancang dan merekayasa struktur sandwich dengan core alumunium dan skin plat ASTM A36, serta menga…

PEMBENTUKAN MEMBRAN TIMAH DIOKSIDA (SnO2) DENGAN PENCAMPURAN POLYETHERSULFONE…

Fabrication of Polyethersulfone (PES) membrane by adding Tin Dioxide (SnO2) using the flatsheet method. In this study, the effect of the addition of SnO2 will be analyzed to determine the mechanical properties of the membrane, as well as the performance of water treatment. The PES@ SnO2 membrane was characterized by SEM and the pore size was uniform until the addition of SnO2 reduced the surfac…

 PENGUJIAN KINERJA BATERAI LITHIUM ION BERBASIS BATANG KANGKUNG AIR (IPOMOEA…

A lithium ion battery is a rechargeable battery and moves from the negative to the positive electrode when discharged. In the lithium ion battery component there is an electrode section. This section serves as a place to store energy and a place for chemical reactions to occur. The use of carbon from natural sources such as biological sources and industrial waste has been widely used by previou…

OPTIMASI KECEPATAN DAN WAKTU PENGADUKAN DENGAN DESAIN FAKTORIAL TERHADAP SINT…

Silver nanoparticles have potential as solution to problem of bacterial resistance because of their antibacterial ability. The green synthesis method using ethanol extract of unripe areca nut was chosen because of its flavonoid and polyphenol content which is able to reduce and stabilize silver nanoparticles. The characteristics of silvernanoparticles influenced by the synthesis conditions, inc…

PERBANDINGAN KONSENTRASI LOGAM BERAT PB DAN CU PADA AIR, SEDIMEN DAN BIVALVIA…

Tanjung Buyut is part of the Musi River Estuary which is passed by various types of community activities. This activity causes the entry of pollutants such as heavy metals Pb and Cu which have the potential to pollute the waters. The purpose of this study was to measure the concentration of heavy metals Pb and Cu in water, sediment and bivalves of Anadara granosa and to analyze the comparison o…

ISOLASI SENYAWA METABOLIT SEKUNDER DARI EKSTRAK DAUN TUMBUHAN JAMBU AIR (Syzy…

Water guava (ll. a4renm) bas been errtacted by macemtion method ofdry leaf powder in a rou, in n-hexane, ethyl acetate, and methanol solvents. The separation ofthe compounds was carried out on the ethyl acetate ftaction by means of graviq/ column ckomatography. Purification of the compound was caried out by thh layer chomalognphy test with n-hexane:ethyl acetate (9:1, 7:3, 6:4) as eluent to pro…

IDENTIFIKASI SENYAWA ALKALOID BUAH TEMBESU (FAGRAEA FRAGRANS ROXB) DAN UJI AK…

Tembesu (Fagraea fragrans Roxb) are widely grown in the Ogan Ilir area, South Sumatra. Tembesu fruit is a plant that contains alkaloid compounds and has many benefits as herbal medicine. This research aims to identify the alkaloid compounds contained in the tembesu fruit and the antibacterial activity against Staphylococcus aureus and Pseudomonas aeruginosa bacteria. Alkaloids are known as orga…

FERMENTASI MOLASE MENGHASILKAN ETANOL DENGAN ISOLAT YEAST DARI AIR KELAPA YAN…

This research is about molasses fermentation to produce ethanol with yeast isolate from coconut water which is immobilized on calcium alginate. Molasses has a high sugar content so it is very good to be used as a fermentation substrate. Fermentation was carried out directly by using yeast isolate immobilized on calcium alginate where the yeast isolate added to the immobilizing gel was the same …

STUDI SEDIAAN KOPI ROBUSTA PROBIOTIK DENGAN BAKTERI PROBIOTIK LACTOBACILLUS B…

Research on the preparation of probiotic robusta coffee with probiotic bacteria Lactobacillus bulgaricus has been carried out. This study aims to make probiotic coffee. Robusta coffee used consists of fermented coffee with Amylomyces rouxii and without fermentation. Probiotic coffee is made by adding Lactobacillus bulgaricus probiotic powder with variations of 1%, 3% and 5% into robusta coffee.…

ANALISIS SPESIASI ION LOGAM Pb2+ DAN Pb4+ DI PERAIRAN SEKITAR TPA SUKAWINATAN…

Speciation analysis of Pb2+ and Pb4+ metal ions has been carried out in the waters around the Sukawinatan TPA Palembang covering the core zone, namely leachate, pond 1, pond 2, monitoring wells, buffer zone covering rivers and river canals as well as cultivation zones, namely community wells using the potentiometric method of concentration cell system. The purpose of this study was to determine…

FOTODEGRADASI ZAT WARNA CONGO RED MENGGUNAKAN ZnFe2O4 YANG DI-COATING PEG-6000

ZnFe2O4 is a ferrite compound, it is classified as a heterogeneous catalyst and can be used to degrade pollutant pollutants in the environment. The advantage of using ZnFe2O4 as a catalyst is that the catalyst can be easily separated from the solution using a permanent magnet after the photodegradation process. This study aims to synthesize ZnFe2O4 coated with PEG-6000 by coprecipitation method…

PENGARUH TEGANGAN DAN LAJU ALIR CO2 TERHADAP KONVERSI CO2 MENJADI METANOL MEN…

CO2 gas can be converted into suitable products, one of which is methanol. In this study, CO2 was converted into methanol by the chemical reduction method using a membrane electrode assembly (MEA) as the reaction center. MEA consists of a Nafion-117 electrolyte membrane and two electrodes in the form of cathode and anode. The cathode uses a Cu2O-ZnO/C catalyst applied to the surface of the gas …

PREPARASI ANODA Cu2O/C DAN KATODA Pt/C DENGAN DOPING POLIANILIN SERTA APLIKAS…

Preparation of Cu2O/C and Pt/C catalyst supported on substrate in the form of carbon sheets from gelam bark and carbon vulcan doped with polyaniline using by membrane electrode assembly (MEA) in the direct methanol fuel cell. Carbon sheets and carbon vulcan were mixed with Cu2O/C and Pt/C catalyst inks, polyaniline, PTFE and nafion, then sprayed onto surface of the gas diffusion layer (GDL) to …