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INDONESIA
CHEMPUBLISH JOURNAL
Published by Universitas Jambi
ISSN : -     EISSN : -     DOI : -
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry
Arjuna Subject : -
Articles 6 Documents
 1 
Search results for , issue "Vol. 4 No. 1 (2019): Chempublish Journal" : 6 Documents clear
Karakteristik biodiesel dari minyak jelantah menggunakan katalis abu gosok dengan variasi penambahan metanol Yelmira Zalfiatri; Fajar Restuhadi; Rizky Zulhardi
CHEMPUBLISH JOURNAL Vol. 4 No. 1 (2019): Chempublish Journal
Publisher : Universitas Jambi, Fakultas Sains dan Teknologi, Program Studi Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (160.487 KB) | DOI: 10.22437/chp.v3i1.5774

Abstract

Biodiesel is the reaction esterification and transesterification between oil and alcohol. Biodiesel raw materials in the form of vegetable oil, one of which is Waste Cooking Oil (WCO). This study aims to obtain the addition of the best methanol in the manufacture of biodiesel from cooking oil. The research method used Randomized Complete Design (RAL) with M1 treatment (methanol 65 ml), M2 (methanol 75 ml), M3 (methanol 85 ml) and M4 (95 ml methanol). The best result was obtained with addition of 95 ml of methanol (M4) with 0.42 mg KOH / g, total glycerol 0,08%, flash point 227 ° C, saponification number 123,46 mg KOH / g and methyl ester 99 , 4%.
The utilization of chicken bone activated carbon as an adsorbent and its implementation in chemistry learning Siti Zulaiha
CHEMPUBLISH JOURNAL Vol. 4 No. 1 (2019): Chempublish Journal
Publisher : Universitas Jambi, Fakultas Sains dan Teknologi, Program Studi Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (311.351 KB) | DOI: 10.22437/chp.v4i1.6795

Abstract

Brownish yellow is one of the characteristics of bore well water which indicates a high concentration of iron (Fe) that will affect human health and damage the aesthetic value. This study aims to purify the bore well water by reducing the concentration of Fe metal by adsorption of chicken bone activated carbon (CBAC) and implementing the results of research on the material of colloidal adsorption properties at Pekanbaru Telkom Vocational High School. CBAC is made through 3 steps namely dehydration at 50oC, carbonization at 400oC and activation with HCl, formic acid and NaOH pa. Each 1 gram of CBAC is mixed with the volume varied by 5; 10; 15; 20 and 25 ml. Measurements of Fe metal concentrations were carried out using Atomic Absorption Spectrophotometer (AAS) and the data obtained were then analyzed descriptively through tables and graphs. Maximum adsorption of CBAC was obtained in 20 ml of bore well water with a percentage reduction 99.92%. All results of treatment meet Fe metal quality standards as stipulated in Republic of Indonesia Minister of Health Regulation No. 416 of 1990. Analysis of student response questionnaires based on questionnaire analysis techniques obtained a cumulative value of 88.62% (very good).
Amobilisasi Biji Durian (Durio zibethinus) dalam Ca-Alginat sebagai biosorben zat warna Metilen Biru Intan Lestari
CHEMPUBLISH JOURNAL Vol. 4 No. 1 (2019): Chempublish Journal
Publisher : Universitas Jambi, Fakultas Sains dan Teknologi, Program Studi Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (319.098 KB) | DOI: 10.22437/chp.v4i1.6900

Abstract

Telah dilakukan penyerapan zat warna metilen biru menggunakan biji durian teramobilisasi Ca-alginat. Dalam penelitian ini serbuk biji durian di amobilisasi dengan Ca-alginat dengan teknik penjebakan (entrapment). Biosorben yang diperoleh dikarakterisasi dengan intrumen XRF, FTIR dan SEM. Biosorben biji durian teramobilisasi Ca-alginat digunakan untuk penyerapan metilen biru dengan mempelajari pengaruh parameter adsorbsi seperti pH, waktu kontak, massa dan konsentrasi metilen biru. Dari hasil penyerapan diperoleh pH optimal yaitu pada pH 3, waktu kontak optimum 30 menit, massa biosorben 0,5 g dan konsentrasi zat warna optimal 3 ppm. Larutan HNO3 digunakan untuk regenerasi biosorben dan penyerapan metilen biru dapat dilakukan untuk 3 kali ulangan.
Aktivitas koagulan ekstrak dan fraksi daun Sembung Rambat (Mikania micrantha Kunth.) Santi Perawati; Lili Andriani; Septa Pratama; Humayroh Humayroh
CHEMPUBLISH JOURNAL Vol. 4 No. 1 (2019): Chempublish Journal
Publisher : Universitas Jambi, Fakultas Sains dan Teknologi, Program Studi Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (229.712 KB) | DOI: 10.22437/chp.v4i1.6909

Abstract

ABSTRAK Sembung Rambat (Mikania micrantha Kunth) merupakan tumbuhan yang tumbuh merambat mengandung zat aktif dalam bentuk metabolit sekunder seperti alkaloid, saponin, flavonoid, steroid, tanin, terpenoid dan kaya akan senyawa fenolik. Penelitian ini dilakukan untuk mengetahui kemampuan ekstrak dan fraksi dari daun sembung rambat sebagai koagulan. Ekstraksi daun segar sembung rambat menggunakan metode maserasi dengan pelarut etanol 96% , ekstrak etanol difraksinasi menggunakan metode ekstrak cair-cair dengan pelarut n-heksan, etil asetat dan n-butanol. Aktivitas koagulan diukur dengan cara melihat waktu terbentuk benang fibrin dan waktu henti darah pada hewan uji Mencit Putih Galur (Deutschland, Denkenand and Yoken). Ekstrak dengan dosis 60mg/20g BB mencit menunjukkan hasil aktivitas koagulan yang terbaik dibandingkan dengan variasi dosis lain dengan waktu terbentuk benang fibrin (77 detik) dan waktu henti darah (86 detik). Pada fraksi etil asetat memiliki aktivitas koagulan terbaik dibandingkan dengan ekstrak dan fraksi lain dengan waktu terbentuk benang fibrin (64 detik) dan waktu henti darah (86 detik). Ekstrak dan fraksi daun sembung rambat pada dosis 60mg/20g BB mencit memiliki aktivitas koagulan yang baik. Kata kunci: Koagulan, Sembung Rambat (Mikania micrantha Kunth.) ABSTRACT Sembung Rambat (Mikania micrantha Kunth.) Is a climbing plant containing alkaloids, saponins, flavonoids, steroids, tannins, terpenoids and rich in phenolic compounds. This aim was to determine the ability of extracts and fractions of sembung rambat leaves as coagulant. Extraction of fresh leaves of used maceration method with ethanol 96% as a solvent, ethanol extract fractionated used liquid-liquid extract method with n-hexane, ethyl acetate and n-butanol. Coagulant activity was measured by looking at the time of formation of fibrin yarn and the time of blood stops in theanimals test of White Mice (Deutschland, Denkenand and Yoken). Extracts with a dose of 60 mg / 20 g BB mice showed the best results of coagulant activity compared to other dose variations with the time of formation of fibrin yarn 77 seconds and blood stop time 86 seconds. The ethyl acetate fraction has the best coagulant activity compared to extracts and other fractions with fibrin yarn formed time 64 seconds and blood stop time 86 seconds. In conclusion, the extracts and fractions of sembung rambat have coagulant activity. Key words: Coagulant, Mikania micrantha Kunth
Rancang bangun alat penyaring air limbah laundry Mega Gemala; Hengky Oktarizal
CHEMPUBLISH JOURNAL Vol. 4 No. 1 (2019): Chempublish Journal
Publisher : Universitas Jambi, Fakultas Sains dan Teknologi, Program Studi Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (209.226 KB) | DOI: 10.22437/chp.v4i1.6910

Abstract

Laundry merupakan usaha yang menghasilkan limbah cair setiap harinya yang bisa berdampak pada pencemaran tanah dan air jika tidak dikelola dan diolah dengan benar. Dilihat secara visual kondisi air limbah laundry di lingkungan PT X Kampung Seraya, Komplek Pelita Kecamatan Lubuk Baja masih belum memenuhi syarat kualitas air yang baik, maka diperlukan suatu pengolahan (treatment) dalam mengatasi permasalahan tersebut. Salah satu caranya adalah dengan menggunakan metode penyaringan sederhana. Metode ini diharapkan dapat digunakan oleh PT X dalam mengolah limbah cair yang dihasilkan sebelum dibuang ke badan air dengan tujuan mengurangi beban pencemaran air pada lingkungan yang sesuai standar kesehatan masyarakat yang memenuhi parameter kualitas air dari segi fisika dan kimia sesuai dengan Peraturan Menteri Lingkungan Hidup No.5 Tahun 2014. Penelitian yang dilakukan merupakan penelitian eksperimen atau percobaan (experiment research).Adapun rancangan penelitian yang digunakan pada penelitian ini adalah one group pretest-posttest (pretest-posttest design. Dari hasil penelitian pada kualitas air sebelum pengolahan, terdapat beberapa parameter tidak memenuhi syarat dan setelah dilakukan pengolahan dengan kombinasi penyaringan zeolite dan arang aktif dapat memperbaiki kualitas air limbah laundry yaitu menurunkan kadar phospat hingga 98,46%.
Imobilisasi kulit Lengkeng (euphoria longan lour) terhadap penyerapan ion logam Kadmium Cillia Marfania
CHEMPUBLISH JOURNAL Vol. 4 No. 1 (2019): Chempublish Journal
Publisher : Universitas Jambi, Fakultas Sains dan Teknologi, Program Studi Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (294.479 KB) | DOI: 10.22437/chp.v4i1.6915

Abstract

The use of longan skin biosorbents has been shown to reduce environmental pollution caused by heavy metals. Because it has an active site and its facial pores can support the absorption process, it is inexpensive and environmentally friendly. However, the ability of longan skin in absorption has several limitations such as particles that are lightweight, easily damaged and of low specific gravity. To overcome this, various methods have been carried out, one of which is the immobilization of sodium silica. The biosorption method used was the bath method. The results of this study, optimum absorption of Cd metal ions occurred at a concentration of 250 ppm, with a contact time of 120 minutes and a speed of 250 rpm.

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