Article Per Year (5 Year)
p-Index From 2020 - 2025
1.323
P-Index
This Author published in this journals
All Journal Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains
Jhon Armedi Pinem
Unknown Affiliation
Engineering

Published : 28 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 28 Documents
Search

 1   2   3 
Sintesis Membran Silika Berbahan Baku Sekam Padi Variasi: Massa Silika Ramadhani, Trie Sucy; Pinem, Jhon Armedi; Amri, Idral
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

The membrane is a selective and semipermeable layer that is between two phases, namely the feed phase and the permeate phase. The synthesis of silica membrane made from rice husk was carried out using phase inversion method. The purpose of this study was to determine the classification of silica membranes through characterization, determine the effect of variations in silica mass (5, 10, 15, and 20 gram) on the membrane pore, flux, and rejection using variations of operating pressure 1, 2, 3 bars. This study produced a porous membrane. Characterization tests carried out include SEM analysis, flux and rejection. Based on the test characteristics of permeability, selectivity, and pore statistics that have been carried out on the membrane shows that the silica membrane is an ultrafiltration type membrane.Keywords : phase inversion, rhodamin B, semipermiabel, ultrafiltration
Pengaruh Tekanan Operasi Membran Dalam Pengolahan Air Limbah Pulp Dan Kertas Eufransia, Lamria; Pinem, Jhon Armedi; Amri, Idral
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 1 Januari s/d Juni 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Membrane technology is an effective technology to purify wastewater. The objective of the research is to determine the performance of the ultrafiltration for removal of BOD5, COD and TSS from wastewater of pulp and paper industry. This research has been conducted on wastewater treatment of pulp and paper industry with ultrafiltration process using poly aluminium chloride as a coagulant. Wastewater purified by ultrafiltration membranes with a variation of operating pressure 1.0 bar; 2.0 bar; and 3,0 bar. The result show that ultrafiltration process removed 78,93% of  BOD5; 84,22% of COD; and 88,64% of TSS with flux value of 65,95 L/m2.jam at 3,0 bar. Keywords: Pulp and paper wastewater, poly aluminum chloride,rejection, ultrafiltration
Pengaruh Variasi Komposisi Aditif PEG Terhadap Kinerja Membran CA Al-Fitri, Mahriandhanie Chika; Pinem, Jhon Armedi; HS, Irdoni
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 2 Juli s/d Desember 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

The membrane is defined as a selective and semipermeable thin layer between two phases, namely the feed phase and the permeate phase. The purpose of this study is to make cellulose acetate from pineapple leaves, make cellulose acetate membrane with variations in the composition of PEG additives, and study the effect of PEG additive composition on the characteristics of cellulose acetate membranes produced. The methodology in this research is isolation of cellulose from pineapple leaves, synthesis of cellulose acetate from pineapple leaf fibers, synthesis of cellulose acetate membrane, pre-treatment of pulp and paper industry wastewater, and characterization of cellulose acetate membrane. The variation in the composition of the additives Polyethylene Glycol (PEG) used is 5, 10, 15 % w/w. Pulp and paper industrial wastewater treatment using cellulose acetate membrane is carried out with a variation of 2 bar operating pressure. The highest value of flux was obtained on membranes with a composition of PEG 15% w/w that is 39.922 L/m2.hour. The highest value of the rejection of COD, BOD5 and TSS parameters were obtained from the membrane with a PEG composition of 5% w/w, that are 67.13%; 76.45% and 74.42%. Keywords: membrane, polyethylene glycol (PEG), cellulose acetate
Sintesis Dan Karakterisasi Membran Silika (SiO2) Priscilla Vidya Merarin; Syelvia Putri Utami; Jhon Armedi Pinem
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Silica-based membrane are an attractive choice for the purification process because of the size of the pores and morphology which provides higher selectivity. In this study, the synthesis and characterization of silica membranes was carried out with a mass variation of Poly Vinyl Alcohol (PVA) for waste water treatment hotel. The purpose of this study was to determine the characterization of silica membranes obtained by SEM, FTIR and tensile strength, and to determine the performance of membrane against the Flux and Rejection test with the effect of a mixture of PVA mass using raw materials in the form of pure silica. Making silica membranes with mass variations of PVA are 3, 6 and 9 grams and variations in pressure 1, 3 and 5 bars. The process of making silica membranes is the manufacture of PVA solution where the composition consistedof PVA, HNO3, and aquades. Then PEG solution where the composition consisted of PEG 400, Na2SiO3 and aquades. Then mixing PVA and PEG solutions in pure silica. The results showed Silica membrane with a mass of 3 grams of poly vinyl alcohol has the highest permeability of 24,758 L/m2.H.Keywords: membrane, waste, poly vinyl alcohol and ultrafiltration.
Pengolahan Limbah Cair Industri Karet Dengan Kombinasi Proses Pretreatment Dan Membran Ultrafiltrasi Windy Nila Hakim; Jhon Armedi Pinem; Edy Saputra
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

The development of new industries can increase prosperity for the people, but had a negative impact on the environment. Industries that produce waste one of them is the rubber industry. Rubber industries produce wastewater containing organic compounds are relatively high. Rubber industrial wastewater treatment needs to be done first in order to tackle pollution. This study was conducted to test the effectiveness and influence of pretreatment process and ultrafiltration membranes in wastewater treatment process of the rubber industry. Wastewater rubber which has been neutralized, in coagulation using coagulant aluminum sulfate (150 mg/l; 200 mg/l; 250 mg/l) with stirring speed of 200 rpm for 5 minutes and 60 rpm for 15 minutes, then allowed to stand for 30 minutes. Waste water sample is filtered then ultrafiltration with variations in pumping pressure (1 bar, 1,5 bar, 2 bar). The results showed the coagulation process is effective at a dose of coagulant Aluminum Sulfate 250 mg/l is 58,71% of BOD5, 59,04% of COD, 35,71% of TSS and 25% of ammonia. The percentage of waste generated rejection increases with increasing pumping pressure of 1 bar to 2 bar. The rejection percentage is 67,30% of BOD5, 67,19% of COD, 88,15% of TSS and 35,71% of ammonia at 2 bar.Key Words: Aluminium sulfate, coagulation, wastewater rubber, membranes, pressure, ultrafiltration
Pembuatan Koagulan Cair Dari Lempung Gambut Untuk Pejernihan Air Yunita Selonika; Jhon Armedi Pinem; Edy Saputra
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Clay is one of the abundant natural resources and have not been used optimally. Value for clays can be improved further. Utilization of clay as a source of liquid coagulant is one way of increasing value of the clay. The aim of research was to make liquid coagulant from clay peat with extraction process and determine the percentation of extraction. The powdered clay was calcined at a temperature of 750oC for 1 hour extracted using sulfuric acid for 60, 90 and 120 minutes at a temperature of 95°C. The slurry was filtered to obtain the filtrate which was a liquid coagulant. Liquid coagulant extracted during the process of 120 minutes has the highest of percent aluminum and iron extraction.Key words : coagulant, coagulation, extraction, peat clay
Pengolahan Lindi Tpa Muara Fajar Dengan Proses Koagulasi Dan Membran Uitrafiltrasi Megah Mulia Ginting; Jhon Armedi Pinem; Elvie Yenie
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 1 (2014): Wisuda Februari Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Leachate is luquid which was produced from huge of waste at landfill. Leachate has organic substances which is potentially harmful of human and ecosystem. Because it can serve as a medium for the growth and development of  pathogenic microorganisms. This study aimed to determine the effect of coagulant  Aluminum Sulfate concentration in the coagulation-flocculation, membrane  resistance, flux and rejection percentages.  In the coagulation-flocculation process,  coagulant Aluminum Sulfate concentration was used 30 ppm. The process was done by quickly stirring in 200 rpm on 2 minutes and slow stirring in 60 rpm on 10 minutes with 30 minutes settling time of flocs. The precipitate formed and clear liquid were separated and the clear liquid was fed to the ultrafiltration membrane with variation of pressure at 1 bar, 1.5 bar and 2 bar.With 30 ppm coagulant the survey resulted was BOD5 reduced 25.00%, COD reduced 24.14% and TSS reduced 52.17%. After the membrane ultrafiltration process, the survey obtain the effective process is at 2 bar membrane pressure with number of rejection as following 71.43% of BOD5, 70.59% of COD  and 45.45% TSS. The fluks number is increasing align to pressure of membrane.   Keywords: Leachate, coagulation-flocculation, membrane  ultrafiltration,  Flux, rejection.
Teknologi Membran Dalam Pengolahan Limbah Cair Industri Hermana Setti Tarigan; Jhon Armedi Pinem; Idral Amri
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 1 Januari s/d Juni 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Membrane technology began to be developed at this time. The low energy needed in the operation of membrane technology is one of the triggers for this technology to develope. Stages of the process carried out is the process of coaguulation-flocculation to reduce membrane work and ultrafiltration processes with operating pressures of 1, 3, and 5 bars. The results obtained are the highest percentage of rejection UF membrane process obtained at a pressure of 5 bar that is equal to 84.92% BOD5; 84.71% COD; and 62.5% TSS with an average flux value of 53.69 L/m2.hour.Membrane-based processes with pressure thrust such as microfiltration, ultrafiltration, nanofiltration, and reserve osmosis have been widely used in water and wastewater treatment processes. The wastewater used in this study came from one of the pulp and paper industries. Keywords: Pulp and paper wastewater, Ultrafiltration, Coagulation, Flocculation, rejection
Sintesis Dan Karakterisasi Membran Silika (Sio2) Untuk Pengolahan Limbah Cair Hotel Pengaruh Variasi Komposisi Arief Pratama Avisha; Jhon Armedi Pinem; Fajril Akbar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Pollution by domestic waste is not only produced from residential areas nevertheless is also produced by attempt in tourism especially lodging facilities and infrastructure such as hotels. One of the effects is the wastewater that produced by the hotel. The hotel wastewater treatment using membranes by ultrafiltration is an easy and effective way. The fabrication of silica membranes is also assisted by supporting materials that is compound by Polyvynil Alcohol (PVA) and Polyethylene Glicol (PEG). In this researches the synthesis of silica membranes with variations composition of the silica mass 8, 10, and 12 gram. The aim of this researches is to learn the effect of variations composition of the silica mass on the membranes synthesized towards separation of the BOD5, COD, and TSS that contained in hotel wastewater. The deflation level of BOD5, COD, and TSS were done by passing hotel wastewater through the silica membranes which is synthesized. The optimum coefficient of silica membranes rejection for deflation level is BOD5, COD, and TSS repeatedly are 72,12%; 79,09% and 87,61% along the value of flux that produced is 22,562 L/m2.Hour. The getting larger composition of silica membranes, then the measure and tightness of the membranes pore that produced are getting bigger and organized along with the coefficient of rejection (%) will also decrease.Keywords : flux and rejection, hotel wastewater, membrane, silica, ultrafiltration.
Peningkatan Sifat Mekanis Mortar Geopolimer Abu Terbang Batubara Dengan Penambahan Grafena Rahmat Kurniawan Nasution; Amun Amri; Jhon Armedi Pinem
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 1 Januari s/d Juni 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

This study aims to observe the influence of graphene addition to the mechanical properties of coal fly ash based geopolymers. The procedure of research consisted of raw materials preparation including the graphene synthesis via Turbulence Assisted Shear Exfoliation (TASE) method, alkali activators solution preparation, and finally moulding and curing process of geopolymer mortar. The results showed that the compressive strength of geopolymer increased while the porosity and the water absorption decreased along with the addition of graphene. The highest compressive strength, the smallest porosity and the smallest water absorption, namely 15.228 MPa, 18.498 % and 10 % respectively was exhibited by sample synthesized using 20 mg/mL of graphene and curing temperature of 80 oC. The presence of graphene in the Geopolymer matrix increases the compressive strength properties of the Geopolymer mortar. Keywords : alkali activators, geopolymer, graphene, matrix, TASE
Co-Authors Al-Fitri, Mahriandhanie Chika Amin Fitra Amri, Idral Amri, Idral Amun Amri Arief Pratama Avisha Baktiar Simaremare Edy Saputra Eka Putri Sriandriani Elvi Yenie, Elvi Eufransia, Lamria Ewith Riska Rachma Fajril Akbar Geo Rayfandy Hendriadi Siregar Hermana Setti Tarigan Idral Amri Ilok Dianggoni Irdoni HS Jaksa Or Justman Liona Margarita Siahaan M Arief Riandy Megah Mulia Ginting Mutia Yuli Rahmawati Nandra Saputra Nani Agustina Priscilla Vidya Merarin Rahmat Kurniawan Nasution Ramadhani, Trie Sucy Riny Afrima Sari Rozanna Sri Irianty Sastra Silvester Ginting Selvi ' Angraini Syamsu Herman Syarfi Daud Syelvia Putri Utami Vany Silvia Windy Nila Hakim Yunita Selonika