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All Journal AUSTENIT IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Sriwijaya International Seminar on Energy-Environmental Science and Technology Indonesian Journal of Chemical Science Science and Technology Indonesia Journal Of Chemical Process Engineering (JCPE) Jurnal Serambi Engineering Jurnal Teknik Kimia Kinetika Jurnal Pendidikan dan Teknologi Indonesia International Journal of Research in Vocational Studies (IJRVOCAS) Aptekmas : Jurnal Pengabdian Kepada Masyarakat Journal of Applied Agricultural Science and Technology
Muhammad Yerizam
Politeknik Negeri Sriwijaya
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DETERMINATION OF COD, pH AND COLOR INTENSITY ON SONGKET INDUSTRIAL WASTE USING TEA DREGS AS ADSORBENT Purnamasari, Indah; Yerizam, Muhammad; Zubaidah, Nyayu
KINETIKA Vol 4, No 2 (2013): KINETIKA 01072013
Publisher : Teknik Kimia Politeknik Negeri Sriwijaya

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Abstract

The activities of textile industry is often pollute the surrounding environment. It also occurs in industrial of Palembang  Weaving Songket. It influences the acidity and colored of the water. To manage this condition, the colored wastewater using adsorbents that absorbed from tea dregs. This study aimed to determine the effect of tea dregs adsorbent for wastewater quality improvement Songket industry. The Method of treatment of wastewater is used Batch system, which the wastewater is placed in a container by adding the adsorbent from the dregs of tea.  The used of variable is the absorption time for 2 hours, 4 hours, and 6 hours, with the composition of adsorbent mass 5 gr, 10 gr, and 15 gr. Tea dregs that used in this study has the 19.26% of hemicellulose, 39.54% of cellulose and lignin 20%. It takes four hours for the research in order to obtain maximum results, with tea dregs adsorbent composition that produces a pH smaller than the initial waste 6, COD content of 89.41 gr / L, and 3.993 ppm color intensity. Therefore, absorbent from the dregs of tea is very useful for the development of the textile industry, especially for Songket industrials.
UNJUK KERJA ALAT PEMBUATAN TEPUNG MOCAF TERHADAP REDUKSI HCN DAN PROTEIN SELAMA PENGERINGAN Yerizam, Muhammad
KINETIKA Vol. 9 No. 3 (2018): KINETIKA 01112018
Publisher : Politeknik Negeri Sriwijaya

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The Mocaf flour maker that made for this research consists of grater, dryer and discmill. In this research is caried out design of dryer that the type of belt conveyer dryer by using blower as a source of air suply and combining grater and discmill into one series. The performance test of the tool for this research is reviewed from the analysis of HCN and proteint content for the Mocaf flourproduced from Manihot Glaviozii for drying temperature in the dryer with temperature variations 80, 85, 90, 95 and 100 ℃. Based on the performance test of the tool, the drying process using temperature variations in the dryer affects the results of the reduction of HCN and protein content in the Mocaf flour products produced for drying process with the temperature variation showed that the greater the drying temperature, the greater the reduction of HCN and protein contained in Mocaf flour.The results of HCN analysis contained in Mocaf flour products experienced HCN reduction 66% while in the reduction of protein contained in Mocaf flour 67.83%
PAPAN PARTIKEL AMPAS TEBU (Saccharum officinarum) DENGAN PEREKAT HIGH DENSITY POLYETHYLENE Hasan, Abu; Yerizam, Muhammad; Kusuma, Mutmainnah Ningtyas
KINETIKA Vol. 11 No. 3 (2020): KINETIKA 01112020
Publisher : Politeknik Negeri Sriwijaya

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Abstract

The problem regarding the availability of raw materials for the timber industry encourages research on the use of lignocellulosic materials to develop, one of which is bagasse. The large amount of bagasse and plastic waste that is not utilized as waste in the community makes it possible to carry out further processing into particle board. Plastic waste that can be used as an adhesive in the manufacture of particle boards is high density polyethylene (HDPE) plastic. The method used was Hand lay-up, which was arranging the pattern of bagasse fibers randomly and bidirectional crossed, the ratio of adhesive and bagasse fibers 70:30, compressed by varying the pressing time of 15, 30, 45, 60, 75 minutes 150 0C and a pressure of 100 kgf/cm2. The best results from the manufacture of particle board under 60 minutes of pressing, the bidirectional arrangement pattern has better physical and mechanical properties than the random arrangement pattern. Showed the values of crossed bidirectional fiber moisture content is 4,898%, density 0.64 g/cm3, swelling 8.15% , water absorption 21.71% , MOR 483.11 kgf/cm2 and MOE 1740.95 kgf/cm2.
PEMBUATAN BISKUIT DARI PASTA UBI UNGU (Pasta Diproses Menggunakan Rotary Evaporator) Yerizam, Muhammad; Ningsih, Anis Wahyu
KINETIKA Vol. 11 No. 3 (2020): KINETIKA 01112020
Publisher : Politeknik Negeri Sriwijaya

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Abstract

The provision of breast milk (ASI) cannot optimally fulfill the increasing nutritional needs of infants after entering the age of 6 months, so it must be balanced with complementary feeding of breast milk (MP-ASI). One of the foods that contain lots of nutrients for babies is purple sweet potato. Purple sweet potato can be processed into a paste for raw materials for making biscuits as complementary food for ASI (MP-ASI). The aim of this research is to make biscuits according to SNI No. 01-7111.2-2005 using raw material for purple sweet potato paste. The concentration of bait used was 62.5%, 55.5% and 50%. Purple sweet potato paste is made using a rotary evaporator. The results showed that the optimum operating conditions for the rotary evaporator in producing the paste were at a feed concentration of 55.5%, the viscosity, density and water content values obtained were 311.4176 mPa.s, 1.0885 gr / mL and 57.7578%. The paste produced from the rotary evaporator is then used to make purple sweet potato biscuits. The analysis showed that the carbohydrate, protein, fat and water content were 39.30%, 8.42%, 20.35% and 16.05%. The purple sweet potato biscuits that were produced were close to SNI No. 01-7111.2-2005.
MEKANISME ADSORBEN ZEOLIT DAN MANGANESE ZEOLIT TERHADAP LOGAM BESI (Fe) Hasan, Abu; Yerizam, Muhammad; Yahya, Muhammad Habib
KINETIKA Vol. 12 No. 1 (2021): KINETIKA 01032021
Publisher : Politeknik Negeri Sriwijaya

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Abstract

Iron (Fe) is an essential metal whose presence in certain amounts is needed by living organisms, but in excess amounts it can cause toxic effects. This study aims to determine the effect of optimum contact time and optimum mass variation on Fe metal reduction using zeolite and manganese zeolite adsorbents. In addition, isotherm studies and adsorption kinetics were carried out. The variations in contact time used in this study were 0, 15, 30, 45, and 60 minutes. Meanwhile, the adsorbent mass variations used were 1 and 1.5 grams. From the results of this study it is known that the optimum time for the adsorption of Fe metal is 60 minutes with an adsorbent mass of 1.5 grams, a decrease in concentration of 51.1394% for manganese zeolite adsorbent and 47.6074% for zeolite adsorbent. . The iron ion adsorption process using zeolite and manganese zeolite follows the Freundlich adsorption equation model. The adsorption rates of zeolite on ferrous metals for masses of 1 gram and 1.5 grams tend to follow the second order pseudo kinetics model.
RANCANG BANGUN ABSORBER AMMONIA (DITINJAU DARI LAJU ALIR, TINGGI PACKING DAN VARIASI PACKING TERHADAP KONSENTRASI AMMONIA) Dwi Nugroho, Afrian; Sabrina, Delanisa; Agustin Pratiwi, Ines; Yerizam, Muhammad; M, Anerasari
KINETIKA Vol. 12 No. 3 (2021): KINETIKA 01112021
Publisher : Politeknik Negeri Sriwijaya

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Abstract

The formulation of the problem in this study is how to design an absorber device (in terms of flow rate, packing height, and packing variation to ammonia concentration). This study aims to obtain 1 unit of ammonia absorber, reduce ammonia gas levels with an ammonia absorber and get the effect of H2O flow rate, packing height and packing variations on NH3 concentrations. The data analysis used was univariate analysis and bivariate analysis. The data collection technique used was purposive sampling. The research resulted in 1 unit of ammonia absorber with a tower diameter of 3.5 cm and a tower height of 60 cm. The results showed that the effect of H2O flow rate on ammonia concentration was very influential, it was found that the NH3 concentration value on packing height, namely: at the lowest height of 5 cm the amount of NH3 concentration was 5.9690 N and at a height of 60 cm the amount of NH3 concentration was 4.7518 N. The higher the packing height, the lower the NH3 concentration value, the NH3 concentration value obtained on the packing variation, namely: marbles packing of 4.198 N, stainless steel packing of 2.026 N and packi
Reduksi HCN di dalam singkong karet (Manihot glaziovii) dengan proses perendaman Muhammad Yerizam; M. Zaman; Agus Manggala
Jurnal Teknik Kimia Vol 24 No 3 (2018): Jurnal Teknik Kimia
Publisher : Chemical Engineering Department, Faculty of Engineering, Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jtk.v24i3.921

Abstract

Tepung Mocaf (modified cassava flour) adalah merupakan sejenis tepung yang dibuat dari ubi kayu, prinsip pembuatannya adalah dengan memodifikasi ubi kayu dengan mikrobia. Dengan dilakukannya penelitian untuk mendapatkan tepung mocaf dari bahan baku singkong karet ini diharapkan dapat menjadi alternatif selain tepung terigu untuk kehidupan sehari-hari masyarakat yang harganya jauh lebih murah. Penelitian ini memanfaatkan umbi beracun, yakni singkong karet (Manihot glazovii) sebagai bahan baku pembuatan tepung mocaf. Singkong karet (Manihot glazovii) memiliki kandungan karbohidrat yang tinggi yaitu 98,47% sehingga cocok untuk dijadikan bahan baku pembuatan tepung. Penelitian ini dilakukan untuk mengetahui pengaruh waktu perendaman singkong dan pengaruh variasi perendaman dengan pengadukan terhadap reduksi HCN yang terkandung di dalam singkong selama proses perendaman singkong. Hasil yang diperoleh nantinya berupa tepung yang karakteristiknya menyerupai tepung terigu, pada setiap proses pengolahannya akan dilakukan pengujian terhadap kandungan HCN sehingga dapat diketahui hasil reduksi HCN yang terkandung didalam singkong karet.
Modifikasi urea menjadi pupuk lepas lambat menggunakan fly ash batubara dan NaOH sebagai binder Muhammad Yerizam; Indah Purnamasari; Abu Hasan; Robert Junaidi
Jurnal Teknik Kimia Vol 23 No 4 (2017): Jurnal Teknik Kimia
Publisher : Chemical Engineering Department, Faculty of Engineering, Universitas Sriwijaya

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Abstract

Salah satu cara untuk meningkatkan efisiensi penggunaan urea adalah memodifikasi urea menjadi pupuk lepas lambat. Urea dilapisi dengan fly ash-NaOH agar memperlambat pelepasan urea ke tanah dan air sehingga mengurangi dampak pencemaran. Tujuan dari penelitian ini adalah untuk mengamati pengaruh komposisi, waktu pengadukan optimum, serta pengaruh panas dari ketiga komponen yaitu urea, fly ash batubara, dan NaOH dalam menghasilkan pupuk lepas lambat yang terbaik. Variable yang diamati adalahtemperatur pencampuran, jumlah komposisi urea-fly ash-NaOH, dan waktu release. Hasil menunjukkan bahwa fly ash dan NaOH dapat digunakan untuk melapisi urea. Urea yang dimodifikasi dibuat tanpa pemanasan, hasilnya padatan dan keras, serta release ke tanah dan air cukup lama dibandingkan urea biasa. Waktu release dari urea modifikasi ini lebih dari 15 jam dengan berat 1 gram, dan waktu release di air mencapai 16 menit.
Analysis of downdraft low rank coal performance gasification by variations coal to syngas product Erwin Erwin; Aida Syarif; Muhammad Yerizam
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 7, No 1 (2022): February 2022
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v7.i1.01

Abstract

Coal resources are inclusive (reserves are part of the resource), of which 48% is located in South Sumatra, with 70% of the deposits being brown or low-quality coal. With the high amount available, the direct use of coal has several shortcomings, one of which is that coal releases gases (CO2, N2O, NOx, SOx and Hg) which cause global warming. Coal gasification is a process for converting solid coal into a gas mixture that has a fuel value. Coal gasification will produce producer gas in the form of synthetic gas (syngas) with the main components consisting of carbon monoxide (CO), hydrogen (H2), and methane gas (CH4). By converting coal using gasification as a clean energy producer, a blower as a regulator of air flow, a cyclone as a tar separator and a gas cooler. Based on the results of testing the variation of coal used, the variation of 5515 Kcal / Kg coal has a rapid rise in temperature and is able to produce a flame for 115 minutes. with the composition of Syngas CO and CH4 of 12.4% an 1.2%, while the coal variation of 4640 kcal/kg produces the highest H2 of 6.9%. Coal 5515 kcal/kg produces the largest percentage of syngas conversion, carbon conversion, Low Heating Value, power output and stove efficiency, namely 13.46%, 70.397%, 2.427 MJ/kg, 18.403 KW and 31.23%
Biodiesel Production from Waste Cooking Oil Endang Sri Rahadianti; Yerizam Yerizam; Martha Martha
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 3, No 3 (2018): October 2018
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v3.i3.77

Abstract

Increased energy consumption and the depletion of petroleum reserves have pushed up oil prices globally. The diminishing petroleum reserves are a problem inherent in this type of fossil energy. One alternative energy source that has the potential to be developed in Indonesia is biodiesel. Used cooking oil or used cooking oil is a potential raw material for making biodiesel. In this study biodiesel was made from used cooking oil and methanol using the transesterification method with KOH catalyst. The production of biodiesel from used cooking oil begins with mixing raw materials of used cooking oil collected into one. The mixture is then precipitated for 24 hours. The transesterification process was carried out by mixing KOH (1% of oil weight) with methanol (ratioof methanol: oil 6: 1) at a temperature of 65 oC. After the temperature is reached, the methanol and KOH solution is added slowly while pumping (stirring), with a variation of time 30, 45, 60.75 and 90 minutes. Biodiesel purification is done by washing using hot water (temperature 70 C) twice as much washing. Characteristics of biodiesel based on the best conditions for density 0.886 g / mL, viscosity 5.89 cSt, FFA 0.11% , acid value 0.256 mgKOH/g and flash point 170.52 oC. The biodiesel products based on these parameters meet SNI 7182-2015 standards.
Co-Authors Abu Hasan Abu Hasan Abu Hasan Achmad Reza Aditya Amin Agum Try Wardhana Agus Manggala Agustin Pratiwi, Ines Ahmad Husaini Ahmad Zamheri Aida Syarif Aliyah Montessa Anerasari Meidinariasty Anggi Dwi Chandrika Apriansyah Zulatama Aria Yopianita Arif Budiman Asyeni Miftahul Jannah Ayuni Lestari Azaria Hikmah Fajrianti Daya Wulandari Dilia Puspa Dina Eka Pranata Dwi Nugroho, Afrian Ellina Margaretty Endang Sri Rahadianti Erwana Dewi Erwin Erwin INDAH PURNAMASARI Indah Purnamasari Indah Purnamasari Indrayani Indrayani Kusuma, Mutmainnah Ningtyas M, Anerasari M. Ridho Triadi M. Zaman Martha Martha Muhammad Yori Pratama Ningsih, Anis Wahyu Nyayu Fia Atindu Nyayu Zubaidah Nyayu Zubaidah Raysha Amelya Renny Citra Ramadhani Robert Junaidi Rusdianasari Rusdianasari Rusdianasari Sabrina, Delanisa Sari Rizky Amelia Sarmidi Sarmidi Selastia Yulianti Yahya, Muhammad Habib Yohandri Bow