Article Per Year (5 Year)
p-Index From 2019 - 2024
0
P-Index
This Author published in this journals
All Journal Reaktor International Journal of Science and Engineering (IJSE) JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Majalah Ilmiah MOMENTUM Jurnal Inovasi Teknik Kimia
Herry Santosa
Chemical Engineering Department Faculty Of Engineering Diponegoro University
Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Education Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology

Published : 13 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 5 Documents
Search
Journal : JURNAL TEKNOLOGI KIMIA DAN INDUSTRI

 1 
PENJERNIHAN MINYAK PELUMAS BEKAS DENGAN METODE PENJERAPAN SUATU USAHA PEMANFAATAN KEMBALI MINYAK PELUMAS BEKAS SEBAGAI BASE OIL Johanna Lianna; Yunia Karyati; Herry Santosa
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 1, Nomor 1, Tahun 2012
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (84.102 KB)

Abstract

Used lubricating oil which is fantastic in number is potential to be recycled into base oil to remove contaminants that contained in the lubricating oil. Research carried out is intended to determine the most effective type of adsorbent between coal, activated carbon or silica gel; assess the influence of concentration alkilbenzenesulfonate; as well as the most effective purification media between bentonite and zeolite as an effort in order to purify used lubricating oils. The study was conducted in three stages. First, the preparatory phase consisting of (a) characterization of lubricating oil, (b) reducing the size of various types of adsorbent to obtain the size of 2 to 3.25 mm, (c) activation of silica gel and zeolite, (d) making alkilbenzenesulfonate solution (ABS) on various concentrations. Second, the adsorption step to remove contaminants, for example solid material, metal, and water. The experiments were performed on the type of adsorbent : coal, activated carbon and silica gel. Third, purification stage using the alkilbenzenesulfonate as solvent. The experiments were performed by using solution of alkilbenzenesulfonate at various concentrations as well as purification media such as zeolite and bentonite. At the end of the experiment, tested the results against the percent transmittance, viscosity, viscosity index, and specific gravity. Ttransmittance was tested by using a spectrophotometer with a specification SP-300 OPTIMA at wavelength 680 nm, the viscosity was tested using viskosimeter Ostwald, viscosity index is calculated by comparing the viscosity experimental results with the viscosity of water, while the specific grafity is calculated by comparing the density experimental results with the density of water. To produce refined products that approach the specification of base oil, adsorption process is better done using coal as adsorbent, purification process using pure ABS and the use of zeolite as a medium for purification.
PENGOLAHAN AIR LIMBAH RUMAH TANGGA SECARA BIOLOGIS DENGAN MEDIA LUMPUR AKTIF Suatu Usaha Pemanfaatan Kembali Air Limbah Rumah Tangga Untuk Kebutuhan Mandi Dan Cuci Deissy L Nusanthary; Elliza Rosida Colby; Herry Santosa
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 1, Nomor 1, Tahun 2012
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1546.559 KB)

Abstract

Liquid wastes water, the former can be processed into water that can be used again in accordance with needed. Research carried out using a biologically active sludge media. The experiment is done through two stages (1) the characterization of waste water (2) wastewater treatment. Characterization of wastewater is meant to find out the characteristics of the waste water based on pH and clarity level. Stages of wastewater treatment is performed in four aerator box, each with comparative weight of active sludge per unit volume (MLSS 1000, 2000, 3000 MLSS MLSS and MLSS 4000 mg/litre). On each end of the experiment conducted test pured, pH, water softening, and surfactants of kehari for seven days. From the results of the experiment retrieved data (1) the waste Water need further processing to put back as water bath and laundry (2) Review of test parameters pH, clarity, and water softening. processing for 6 days will provide product water processed relatively better on the use of MLSS 1000mg/l (3) of the day to day, during the process of decreasing the levels of processing takes place even though it has not yet reached the levels of surfactants are surfactants are equal to zero, according to SK menkes RI in 2002.
PEMBUATAN DEKSTRIN DARI TEPUNG TAPIOKA SECARA ENZIMATIK DENGAN PEMANAS MICROWAVE Lis Pudiastuti; Tika Pratiwi; Herry Santosa
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 2, Nomor 2, Tahun 2013
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (314.586 KB)

Abstract

Dextrin is partial hydrolysis product from starch with enzyme catalys. This research’s aim are to (1) make dextrin from tapioca starch, (2) learn the influence of starch concentration and liquefaction time to DE and viscosity. The process include 3 step (1) preparation, (2) formation of dextrin, and (3) result evaluated. The formation of dextrin consist of 2 phase, that is gelatinization phase which held in microwave and liquifaction phase which held in stirer tank. The control variable are starch genus (tapioca starch merck “Gunung Agung”), catalist genus (α-amylase)0,5-0,6 kg/tons dry starch, CaCl2.2H2O 40 ppm, pH 6 – 6,5, liquifaction temperature 94oC, Microwave with power 10 and defrost d2. Free variable that use are liquifaction period (30, 60, 90, 120,150,180 minutes) and starch soluion concentration (10, 15, 20, 25, 30, 35% w/v). At the end of researc, product analysed DE with volumetric method (Woodman, 1941),  viscosity with Leach method (1963) and Thermo Haake method. From this reaserch, the product dextrin was maltodextrin with maximal DE 12,839. And known that (1) as long as the liquifaction time,  higher DE from dextrin product and decrease in its viscocity, (2) small starch concentration produce dextrin with higher DE and smaller viscosity than high starch concentration.
PEMANFAATAN KOMBINASI FLY ASH BATUBARA, ALKILBENZENESULFONAT, DAN ZEOLIT PADAPENJERNIHAN MINYAK PELUMAS BEKAS DENGAN METODE PENJERAPAN Risang Prasaji; Conny Dewita U; Herry Santosa
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 2, Nomor 4, Tahun 2013
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (152.067 KB)

Abstract

The using of mineral lubricating oils from petroleum fractionation happen in very fantastic number. Acording to data form central statistics agency republic of indonesia, the number of production of base oil for lubricant is 2.027.000 barrel in the year 2010. While the need of lubricating oil is 5.994.956 kl per year. On the one hand, increasingly depleted oil reserves so that the manufacture of lubricating oil (base oil) is also diminishing. Thus, research in order to reuse the used lubricating oil to be base oil is highly prospective.The research is intended to (a) determine the weight of fly ash as adsorbent that is relatively good, (b)determine the comparison volume of alkilbenzenesulfonat against weight of zeolit relatively good until obtained lubricating oil former which fullfill the criteria as base oilThe study is planned in two stages. First, the preparatory phase consisting of (a) the characterization of used lubricating oil viscosity based on the test and the% transmittance, (b) reduce and activate the natural zeolite. Second, adsorption and purification steps to remove contaminants in the form of a solid material, metal, and water.At this stage of adsorption experiments were performed by varying the weight of coal flyash each unit volume of used lubricating oil.At this stage ofpurification, experiments were performedby varyingthe weight ratioof zeoliteto thevolumeperunitvolumealkilbenzenesulfonateused lubricatingoil. At eachend of the experiment theresultswas tested againstthe absorbance ofthe lubricating oilviscosity.
ADSORBSI Fe DENGAN MENGGUNAKAN ZEOLIT ALAM SUATU USAHA UNTUK MENINGKATKAN MUTU MINYAK NILAM Bhagus Alfiyan; Hamdillah Usman; Herry Santosa
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 1, Nomor 1, Tahun 2012
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (159.859 KB)

Abstract

Patchouli oil quality could be determined by the amount of Fe impurity contained in. The presence of Fe in patchouli oil is an accomplished fact, nevertheless its presence, for some cases, isn’t desirable. Adsorption is a method to reduce the amount of Fe in patchouli oil. The research would be done beyond by two steps.  First step is preparation of active zeolite which consists of (1) reducing zeolite size into 80 mesh and (2) activating the zeolite. In this step, zeolite  will be immersed  into 250 ml  KMnO4 1 M solution during 24 hours then it will be dried  using   110-1200C oven during 30 minutes.  Second step is Fe adsorption in patchouli oil. The aim of adsorption step is to determine the most influencing independent variable among the weight of zeolit, adsorption temperature, and adsorption time using 2 levels Factorial Design Method. The adsorption will be done on 5 gr and 10 gr weight of zeolit, 300C and 900C adsorption temperature, along with 30 minutes and 60 minutes adsorption time.  The analysis of the amount of Fe that can be reduced will be done using Atomic Absorption Spectrofotometry (AAS) at the end of each variable. From experiment result, we have determined that the weight of zeolite is the most influencing independent variable to reduce Fe in patchouli oil.
Co-Authors Aditya Yuna Aditya Yuna Ahmad Dzulfikar Fauzi Antonius Prihanto Anwar Trisanto Aprilina Purbasari Bambang Pramudono Berlian Arswendo Adietya Bhagus Alfiyan Bunga Profegama Bunga Profegama Conny Dewita U Deissy L Nusanthary Dessy Ariyanti Elliza Rosida Colby Hamdillah Usman Heny Kusumayanti Johanna Lianna Kristinah Haryani Lis Pudiastuti Noer Abyor Handayani Noer Abyor Handayani Risang Prasaji Tika Pratiwi Yunia Karyati