cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
-
Contact Email
-
Phone
-
Journal Mail Official
-
Editorial Address
-
Location
Kota semarang,
Jawa tengah
INDONESIA
Chem Info
Published by Universitas Diponegoro
ISSN : -     EISSN : -     DOI : -
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry
CHEMINFO JOURNAL adalah jurnal saintifik yang diterbitkan secara periodik 3 bulanan oleh Jurusan Kimia, Fakultas Sains dan Matematika Universitas Diponegoro Semarang. Jurnal ini sebagai media publikasi hasil karya ilmiah lulusan S1 Jurusan Kimia.
Arjuna Subject : -
Articles 66 Documents
 1   2   3   4   5 
PENGARUH ASAM FORMIAT PADA BULU AYAM SEBAGAI ADSORBEN TERHADAP PENURUNAN KADAR LARUTAN ZAT WARNA TEKSTIL REMAZOL GOLDEN YELLOW RNL Sa'adah, Nailys
Chem Info Journal Vol 1, No 1 (2013)
Publisher : Chem Info Journal

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (434.724 KB)

Abstract

Effect of Formic Acid to Hen Feathers As Adsorbent for Decreasing Concentration Levels of Remazol Golden Yellow RNL Textile Dye. Hen feathers is a waste that can be utilized because of the content of keratin existence. keratin is fiber protein containing amino acids such as cysteine. Research which is trying to modify a hen feathers by the addition of formic acid in adsorption method to decrease the levels of textile dye solution until now has not been reported. This study began by preparing the feather as adsorbent and then followed by treatment using formic acid for hen feathers. Results showed that feather adsorbent without and with formic acid treatment produced the different level of dye decrease. This is because the addition of formic acid can enlarge the pores of the hen feathers so that the resulting the more effective adsorption, indicated by the 66.09% increase in surface area, 29.22% increase in pore average and 114.93% % increase in total pore volume. While the value of the maximum adsorption capacity of untreated feathers and with formic acid treatment amounted to 7.892 mg/g and 10.471 mg/g.
Electrophotocatalysis and Photocatalysis Methods By Using TiO2 For Decolorization of Remazol Red RB and Decreasing of Cd2+ Ion Concentration in Simultaneously Anggraini, Riska Marina; Haris, M.Si, Drs. Abdul; Prasetya, S.Si, M.Sc., Nor Basid Adiwibawa
Chem Info Journal Vol 1, No 2 (2013)
Publisher : Chem Info Journal

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

A study entitled Electrophotocatalysis and Photocatalysis Methods By Using TiO2 For Decolorization of Remazol Red RB and Decreasing of Cd2+ Ion Concentration Simultaneousy has been done. This study aimed to determine the effect of TiO2 photocatalyst of the decrease of Cd2+ and the effect of electrical potential on decolorization of Remazol Red RB and decrease of Cd2+ concentration simultaneously. TiO2/FTO was used as anode, on the other hand carbon was used as cathode, while the UV-C lamp was used as photon source. Electrophotocatalysis and photocatalysis were performed for 240 minutes. The final results were analyzed using UV-Vis Spectrophotometer for determining the absorbance of the Remazol Red RB remained and using Atomic Absorption Spectrophotometry (AAS) for determining Cd2+ remained. The results showed that the percentage of decolorization of dye solution containing Remazol Red RB and Cd2+ ion electrophotocatalysis and photocatalysis methods were 97.57% and 58.54% respectively, while the percentage of ion Cd2+ decrease by electrophotocatalysis and photocatalysis 84.7% and 76.3% respectively. Photocatalysis TiO2 by the addition of electric potential can minimize recombination of electron and hole pair that can decolorization Remazol Red RB and decrease Cd2+ ions concentration better than photocatalysis TiO2 without using addition of electric potential.
Isolasi, Karakterisasi dan Amobilisasi α-Amilase dari Aspergillus niger FNCC 6018 Nisa', Khairun
Chem Info Journal Vol 1, No 1 (2013)
Publisher : Chem Info Journal

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (328.352 KB)

Abstract

Aspergillus niger FNCC 6018. The purposes of this research are to get specific activity data of isolated α-amylase from Aspergillus niger FNCC 6018, get optimum condition of enzyme data, include: pH and temperature, and get activity data of immobilized α-amylase in matrix bacto agar and recurrence test. The method is use in this research to determine α-amylase activity test by measuring maltose that produce from α-amylase which hydrolize amylose with Bernfeld method using DNS (3,5-dinitrosalicylic acid). Amount of protein was measured by Lowry method using standard BSA (Bovine Serum Albumin). The result of this research show that α-amylase enzyme isolated from Aspergillus niger FNCC 6018 which ammonium sulphate fraction 3 (40-60%) has the highest specific activity amount 5.7 Unit/mg protein. Optimum condition α-amylase from Aspergillus niger FNCC 6018 was achieved at optimum pH value 5.0 and temperature 36οC. Immobilized α-amylase in matrix bacto agar had specific activity amount 1.95 Unit/mg protein and use until twice recurrence.
PEMURNIAN GARAM KROSOK (NaCl) DENGAN PENAMBAHAN (NH4)2CO3-NaOH DAN PAC SEBAGAI BAHAN PENGIKAT IMPURITIES SERTA REKRISTALISASI MODEL SPRAY Solihat, Nissa Nurfajrin; A. Prasetya, Ssi. MSc., Nor Basid; , M.Si., Drs. Gunawan
Chem Info Journal Vol 1, No 2 (2013)
Publisher : Chem Info Journal

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Garam merupakan kebutuhan pokok manusia yang sampai saat ini belum ada substitusinya. Negara Indonesia masih harus mengimpor garam khususnya untuk keperluan industri karena rendahnya produksi garam yang dihasilkan oleh petani garam dan tidak ada hamparan lahan luas di kawasan pesisir pantai untuk dijadikan ladang garam berskala besar. Oleh karena itu diperlukan cara untuk mengatasi masalah ini. Tujuan penelitian ini adalah untuk memurnikan garam NaCl hasil petani garam agar sesuai dengan standar SNI dan SII untuk industri dengan biaya produksi yang rendah dengan menentukan volume optimum penambahan (NH4)2CO3 dan pengaruh PAC (Poli Alumunium Klorida) terhadap pemurnian garam. Metode yang dilakukan pada penelitian ini dengan cara menambahkan (NH4)2CO3 sebagai bahan pengikat impurities dengan variasi volume 0,8; 1,6; 2,4; 3,2; 4,0 mL lalu flokulan PAC serta penambahan NaOH yang dapat mengendapkan ion pengotor pada garam yaitu ion Ca2+ dan Mg2+, kemudian dilakukan modifikasi rekristalisasi dengan penguapan yaitu dengan model spray. Pada penelitian ini diperoleh kadar NaCl sesuai dengan standar SII dan SNI yaitu kadar air 2,11%; NaCl dengan kemurnian 98,93%; Ca2+ 0,01%; dan Mg2+ 0,09% pada penambahan (NH4)2CO3 20% sebanyak 3,2 mL dan PAC 10 ppm sebanyak 3 mL terhadap 200 mL larutan garam jenuh.
Isolasi, Identifikasi Serta Uji Aktivitas Antibakteri Senyawa Golongan Triterpenoid Dari Ekstrak Daun Binahong (Anredera cordifolia (Ten.) Steen) Terhadap Staphylococcus aureus dan Escherichia coli Murdianto, Agus Ria
Chem Info Journal Vol 1, No 1 (2013)
Publisher : Chem Info Journal

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (172.351 KB)

Abstract

Isolation, identification, and antibacterial activity examination of triterpenoid compounds from leaves of Binahong (Anredera cordifolia (Ten.) Steen). Maseration of 1 kg dry powder of those leaves using n-hexane respectively yielded 43,2 g. The n-hexane extracts obtained contained triterpenoids based on fitochemical test of Lieberman-Burchard. Compound separation of the n-hexane extract using column chromatography produced isolate which contained triterpenoids in fraction A. The isolate inhibited the growth of Staphylococcus aureus and Escherichia coli at Minimal Inhibition Concentration 100 ppm with weak inhibition zone. The results of identification using UV-Vis spectrophotometry showed a maximum absorption at a wavelength of 239 nm. Based on FT-IR spectrogram shows the groups, there were OH , C=C, C-C, C=O, -C-H, -CH3,-CH2, and C-O. LC-MS spectrogram indicated that the isolated had a molecular weight 562 g / mol of suspected compounds 2,3,19,23-tetrahydroxy-12-ene-24,28-dimethyl ester.
SINTESIS DAN KARAKTER SENYAWA KOMPLEKS Cu(II)-EDTA DAN Cu(II)- C6H8N2O2S Nurvika, Dian
Chem Info Journal Vol 1, No 1 (2013)
Publisher : Chem Info Journal

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (839.445 KB)

Abstract

Has done research about the synthesis and characterization of complex compounds of Cu(II)-EDTA and Cu(II)-C6H8N2O2S. This research was conducted to obtain complex compounds Cu(II)-EDTA and Cu(II)-C6H8N2O2S and knowing the character of the complex compounds through analysis of UV-Vis, AAS and FTIR. Synthesis of Cu(II)-EDTA is done by mixing CuSO4.5H2O and EDTA ligand in aquades, and then performed with refluks and magnetic stirrer, filtered, washed and dried in a desicator. Synthesis of complexes Cu(II)-C6H8N2O2S done by mixing CuSO4.5H2O that has been reconstituted in methanol with C6H8N2O2S that has been reconstituted and magnetic stirrer. The results is obtained precipitated Cu(II)-EDTA is blue and Cu(II)- C6H8N2O2S is tawny. UV-Vis analysis results of Cu(II)-8-EDTA have a maximum wavelength at 741 nm, while maximum wavelength of Cu(II)-8 C6H8N2O2S at 813,5 nm. FTIR analysis results indicate the presence of N atom and O atom in EDTA ligand and the presence of N atom in Sulfanilamide (C6H8N2O2S 0. The stability constants of Cu(II)-EDTA of 8.09 x 102 while the Cu(II)- C6H8N2O2S of 1.9596 x 103.
IDENTIFIKASI KOMPONEN PENYUSUN ASAP CAIR DARI AMPAS SAGU DAN KULIT BATANG TANAMAN SAGU (Metroxylon sagu Rottb) SERTA PENENTUAN SENYAWA FENOLAT TOTAL DAN AKTIVITAS ANTIOKSIDAN Aditria, Riswandi
Chem Info Journal Vol 1, No 1 (2013)
Publisher : Chem Info Journal

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (192.023 KB)

Abstract

Liquid smoke is one or the other material which had depeloved as food recently. Potential of liquid smoke as preservatives very influence by its antioxidant activity that caused by phenol and its derivates content. In this research sago waste and sago palm stem shell had processed to be liquid smoke. Activity as foodstuffs preservation very strong correlation with indicator of it composer structure, total phenolic compounds, and antioxidant activity. Liquid smoke from sago waste had succeed obtained with yield 33% and liquid smoke from sago palm stem shell 44%. GCMS data is show existence some compounds with carbonyl group and phenolic, 10 compound had obtained which possess index similarity minimum 80% with reference compounds. Total phenolic compounds for sago waste and sago palm stem shell is 130.59 and 105.30 mg/g liquid smoke equivalent galic acid, respectively. Antioxidant activity test had obtained IC50 number is 303.63 mg/L at sago waste ligid smoke and 442.45 mg/L at sago palm stem shell. Liquid smoke from sago waste and sago palm stem shell have antioxidant activity that un potential, so that must existence more depeloving.
PENGARUH PENAMBAHAN KITOSAN TERHADAP KARAKTER SEMEN KALSIUM FOSFAT Kusumawati, Fitria
Chem Info Journal Volume 3, Nomor 1, Tahun 2015
Publisher : Chem Info Journal

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Telah dilakukan penelitian tentang pengaruh penambahan kitosan terhadap karakter semen kalsium fosfat. Tujuan dari penelitian ini adalah mengetahui pengaruh penambahan kitosan terahadap setting time, hardening time, struktur kalsium fosfat, kristalinitas dan ukuran bulir kristal pada semen kalsium fosfat. Metode yang digunakan untuk membuat fase powder adalah metode reaksi padatan temperatur tinggi dan untuk membuat semen kalsium fosfat adalah metode reaksi pelarutan. Semen yang dihasilkan selanjutnya dikarakterisasi menggunakan spektroskopi Fourrier Transform Infra Red (FTIR) dan XRay Diffraction (XRD). Hasil penelitian menunjukkan bahwa pengaruh penambahan kitosan terhadap semen kalsium fosfat adalah adanya gugus fungsi fosfat, karbonil dan hidroksil yang muncul bersama gugus fungsi N-H, C-H, dan C-O pada semen kalsium fosfat-kitosan, meningkatkan setting time dan hardening time, tidak menyebabkan perubahan struktur, menurunkan kristalinitas dan ukuran bulir kristal hidroksiapatit dari 58,14 nm menjadi 51,70 nm, eningkatkan kristalinitas dan ukuran bulir kristal α-trikalsium fosfat dari 36,47 nm menjadi 41,96 nm.
PEMANFAATAN LIMBAH ELEKTRODA AKI PADA PROSES ELEKTRODEKOLORISASI LARUTAN ZAT WARNA Apipah, Lutfia
Chem Info Journal Vol 1, No 1 (2013)
Publisher : Chem Info Journal

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (726.205 KB)

Abstract

Industrial waste had caused some reduction of water quality, one of them is liquid waste of coloring or dyeing batik production which contains indigosol dye and remazol black B that being dumped to water directly while the environment has limited capability to degradate that dye. Electrolysis method had been chosen as one alternative to cope with dye waste, because its benefits compare to other methods which are effective and simple. One of supporting factor of this method is the electrode being used. This research is destined to decolorized indigosol and remazol black B dye, using PbO2/Pb from used battery as electrode and reducing Chemical Oxygen Demand (COD) number. This research using PbO2/Pb as electrode obtained from battery electrodes waste. This method electrolyze dye sample on 8 volt using PbO2/Pb electrode obtained from used battery and conducted in 150 minutes. Final result of the electrolysis will be qualitatively and quantitavely analyze using UV-VIS spectrophotometer, and analyze Chemical Oxygen Demand (COD). The research result indicated that the use of PbO2/Pb electrode from used battery can reduce color intensity, respectively by 98.02% and 99.42% each for indigosol and remazol black B dye, and could reduce COD number respectively to 28.47% and 51.47% for each dye.
PENGARUH ELEKTRODA GRAFIT-GRAFIT, ALMUNIUM-GRAFIT, DAN SENG-GRAFIT PADA ELEKTROLISIS KOBALT (Co2+ ) DENGAN PENGOTOR ION SENG (Zn2+ ) Wulansari, Rismita
Chem Info Journal Vol 1, No 1 (2013)
Publisher : Chem Info Journal

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2128.04 KB)

Abstract

A study concerning about  taking cobalt metal (Co2+) has been done.  The metal  with  drawal  can  be  done  in  various  method  like  electrowinning  with electrolysis principle. This research purpose is to determine influence of electrode variation such as C-C, Al-C, and Zn-C toward precipitation of cobalt. Electrolysis cell is composed of graphite anode (C) and varieted cathode such as graphite (C), alluminium  (Al), and zinc (Zn). Sample was made content of  ion Co2+ and Zn2+ with  electrolyte  solution  such  as HCl  for  anode and without  electrolyte  solution for  cathode,  andthen  both  of  sample  was  connected  with  KCl  salt  bridge. Electrolysis was  done  in  2,8 Volt  during  40 minute with  various  electrode  pair such as C-C, Al-C, and Zn-C. Solution from electrolysis was analysed using AAS (Atomic Absorption Spectroscopy). The result from analysis showed the decreased of  Co2+ concentration  before  and  after  analysis.  For  electrolysis  without impurities,  the  concentration was decreased by 105 ppm  (C-C), 70 ppm  (Al-C), 2and  100  ppm  (Zn-C),  meanwhile  when  electrolysis  used  impurities,  the concentration was decreased by 85 ppm (C-C), 50 ppm (Al-C), and 70 ppm (Zn-C).  The  highest  yield  was  obtained  when  electrolysis  used  C-C  electrode  pair which  is  7,9%  for  electrolysis  without  impurities and  for  electrolysis  with impurities the result 6,3%. The highest efficiency was obtained when electrolysis used Al-C electrode pair which is 11,7% when electrolysis without impurities and Zn-C was 23,48%  when electrolysis with impurities

Page 1 of 7 | Total Record : 66

 1   2   3   4   5 

Filter by Year

2013 2015


Reset
Filter By Issues
All Issue Volume 3, Nomor 1, Tahun 2015 Vol 1, No 2 (2013) Vol 1, No 1 (2013) Volume 1, Nomor 1, Tahun 2013