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All Journal Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Jurnal Serambi Engineering
Edward HS
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Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Engineering Environmental Science

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Effisiensi Penyisihan Logam Cu2+ Terhadap Adsorben Limbah Padat Tandan Kosong Sawit (TKS) Teraktivasi Virghea Septilda Zalchie; Elvi Yenie; Edward HS
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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The heavy metal found in industrial waste is copper (Cu). The adsorption process of the artificial Cu 2+ solution was investigated using an adsorbent made from Empty Palm Oil Bunches (EFB). EFB is one of the largest solid wastes produced from agricultural activities which contain lignocellulose. Lignocellulose is the main component of EFB which has the ability to adsorb heavy metals because it contains active groups such as –OH and COOH. This study aims to calculate the efficiency of metal ion Cu2+ on EFB adsorbent, with adsorbent mass variation 0.5; 2; 3.5; 5 and 6.5 grams. the best efficiency results were obtained, namely the adsorbent mass of 6.5 grams, which was 79.33%.Keywords: Adsorption, , Cu2+, Palm Empty Fruit Bunches (EFB).
Penyisihan Kadar Logam Cr (VI) Dan Cr (III) Pada Limbah Cair Elektroplating Dengan Kombinasi Proses Pengolahan Secara Biosorpsi Menggunakan Mikroalga Chlorella sp. Dan Koagulasi Flokulasi Putri Sarah Nurliana Atmaja; Shinta Elystia; Edward HS
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

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Electroplating liquid wastewater is liquid wastewater that comes from the process of coating a metal with other metals with the help of an electric current. This research conducts processing of electroplating liquid wastewater using a combination of treatment processes by biosorption using microalgae Chlorella sp. immobilization in an airlift bioreactor and further processing by coagulation and flocculation in a coagulation and flocculation reactor using Poly Aluminum Chloride (PAC) coagulants. The purpose of this study was to determine the removal efficiency, initial concentration and optimum contact time and functional groups in microalgae Chlorella sp. The variation of treatment in this study is the initial concentration of wastewater of 25, 50, 75, 100% with variations in contact time for 1, 2, 3 and 4 days in the biosorption process and the addition of a coagulant dose of 600 mg / L in the flocculation coagulation process. The results showed that the biosorption process obtained the best variation in the concentration of 75% wastewater in 4 days contact time. The combination of biosorption, coagulation and flocculation processing can set aside the Cr (VI) content of 93.03% and Cr (III) of 69.8%. Keywords: Electroplating Liquid Wastewater, Chlorella sp., Chrom, Wastewater Concentration, Contact Time.
Potensi Membran Keramik Dari Tanah Liat Dan Fly Ash Batubara Untuk Mengolah Air Gambut Menjadi Air Bersih Mutia Putri; Lita Darmayanti; Edward HS
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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The supply of clean water in Riau Province can only reach urban areas, thus encouraging some people in rural areas to use peat water to meet their needs. Peat water does not meet the specified clean water quality standards because it has the characteristics of a brownish red color, low acidity and high organic matter content. One of the ways to treat peat water into clean water is by using a ceramic membrane filtration process. Therefore, this article will present a brief review of the potential of ceramic membranes to treat peat water into clean water.Keywords: peat water, ceramic membrane, filtration
Pengaruh Kuat Arus Dan Waktu Kontak Pada Proses Elektrokoagulasi Menggunakan Sel Al-Al Dengan Ketebalan 1 MM Untuk Penyisihan Ammonia Dari Limbah Cair Proses Pengolahan Minyak Bumi Muhammad Fauzi; Syarfi Daud; Edward HS
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Every oil and gas processing activity will not be separated from the problem of Ammonia provision, there are still many difficulties. One of the problems that is currently emerging is the problem of the wastewater treatment process. one of the efforts to reduce ammoniacontent in oil processing industry waste is by electrocoagulation process. The aim of the study was to determine the ability of the electrocoagulation method to decrease Ammonia levels and determine the effect of strong current changes and changes in time to decreaseAmmonia. The electrode used is aluminum. Variations in current strength used are 2, 3, 4, 5 Ampere and reaction times of 20, 40, 60 and 80 minutes. The experimental resultsshowed that the best electrical current for ammonia removal was 5 amperes. The best reaction time in the ammonia removal process in this study was 80 minutes of reactiontime. Highest ammonia removal obtained in this study was 79.7% (initial ammonia 52.3 mg / L to 10.6 mg / L).Keywords : electrocoagulation, aluminum, petroleum processing waste, ammonia.
Konsentrasi Silika (Si) Dalam Debu Jatuh Di Area Pabrik Pengolahan Kelapa Sawit PT. Z Annisah Muslimah; Hafidawati Hafidawati; Edward HS
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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PT. Z is the palm oil processing mill that utilizes solid waste of palm shells and fiber as boiler fuel. This process will produce particulate emissions, one of which is dustfall which contains Silica (Si) because more than 50% of the constituent elements of boiler are Silica. Dustfall sampling implemented by using dustfall collector based on SNI 13-4703-1998, for the calculation of silica concentration is based on Atomic Absorption Spectrofotometry result. The result indicated that Silica concentration at several points had exceeded the threshold value from Per.13/Men/X/2011 which is 10 mg/m3 with the amount of result is 9,75 – 11,47 mg/m3. This is due to the location of fiber collection which is not far from the sampling location.Keywords: Dustfall, palm oil mill, silica
Pengaruh Kecepatan Dan Waktu Pengadukan Lambat Terhadap Penyisihan Fosfat Dan TSS Limbah Cair Laundry Menggunakan Biokoagulan Tepung Biji Asam Jawa Ribka Hutapea; Syarfi Daud; Edward Hs
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 1 Januari s/d Juni 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Tamarind seeds are biocoagulants which contain active substances and are polyelectrolytes. This study aims to determine the slow stirring speed and stirring time in the removal of phosphate and TSS parameters in laundry wastewater and to compare the analysis results with the PERMENLH / 5/2014 quality standard. The removal was carried out by coagulation flocculation and sedimentation using tamarind seed flour by varying the slow stirring speed of 40 rpm, 45 rpm, 50 rpm and slow stirring time of 20 minutes, 25 minutes, 30 minutes and fast stirring 120 rpm for 3 minutes, with a biocoagulant dose 3.5 gr/l. The results showed that the optimum stirring speed was 45 rpm with a stirring time of 25 minutes with the removal efficiency of 60.59% and 78.50% TSS, respectively. The analysis results for phosphate and TSS still do not meet the quality standards for laundry wastewater. Keywords: Laundry Liquid Waste, Stirring Speed, Stirring Time, Coagulation-Flocculation, Tamarind Seed Flour
Pengolahan Limbah Cair Industri Tahu Menggunakan Tanaman Typha Latifolia Dengan Metode Constructed Wetland Muhammad Azmi; Edward HS; David Andrio
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

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Tofu industry is a domestic industry largely do not have sewage treatment units, wherewastewater directly discharge into sewers or water bodies without treatment. The aims ofstudy observation the ability of constructed wetland using T. latifolia to removal, COD andTSS. The research variations were plant and detention time. Constructed wetland reactorusing plastics with dimension 50, 36, 31cm, in length x width x height and soil mediathickness of 10 cm, 5 cm sand and 5 cm gravel. T. latifolia plant density 0, 0,5, 0,75 and 1g/cm2, and variations detention time 1,2, and 3 day. Optimal results were obtained in plantsTypha latifolia 1 g/cm2 and detention time day to 3 there are COD 200 mg/L and efficiency of92,70%; TSS 153 mg/L with efficiency 87,90%;. Anova analysis results α = 5% show thevalue COD 98,8%; and TSS 92,8%. Wich explains that the plant density factor and detentiontime affect the the concentration reduction COD and TSS.Keywords: Thypa latifolia, Constructed wetland, Detention time, Wastewater tofu.
Penyisihan Logam Mangan (Mn) Dalam Air Tanah Dengan Proses Aerasi Menggunakan Tray Aerator Handika Resvandry; Edward HS; Shinta Elystia
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 1 Januari s/d Juni 2018
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Groundwater is the largest source of water that contain manganese (Mn). One method that can be used to decrease manganese (Mn) is aeration using tray aerator. Tray aerator can increase the air contact time with water by letting the water flow down on a cross section. This study aims to determine the ability of tray aerator in removing manganese (Mn) concentrations in variations number of trays (3, 5, and 7 tray) and hole diameter (2 mm, 4 mm, and 6 mm). The results showed that the best removal efficiency of manganese (Mn) was occurred in variation of 7 tray diameter of 2 mm pit at 99,65%.Keywords: Aeration, Groundwater, Manganese, Tray aerator
Pemanfaatan Tandan Kosong Sawit dan Lumpur IPAL Produksi Minyak Sawit Sebagai Bahan Baku Pembuatan Briket Dengan Crude Gliserol Sebagai Perekat Adi Putra Pratama; Elvi Yenie; Edward HS
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

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Empty fruit bunch and WWTP mud palm oil production is a source biomass energy which has not been utilized optimally yet. This study aims determine the effect of differences in the compotition of raw materials and the addition of crude glycerol adhesive to the quality of briquettes produced using the carbonization process. The proses of making briquettes in this study with variying variations in the composition of raw material for empty fruit bunch : WWTP mud palm oil production 90%:10%, 80%:20%, 70%:30%, 60%:40% and crude glycerol adhesive concentration 0%, 5%, 10%, 15% from the total weight of 10 gram briquettes. The fixed variatons used are empty fruit bunch temperature of 450oC for 90 minutes, sludge temperature 300oC for 60 minutes, particle size used were less than 100 mesh and pressing preasure 100 bar. Drying is carried out indoors for 24 hours and then oven for 1 hour with temperature 105oC. the result showed that the best briquettes were in the composition of 90%:10% empty fruit bunch and WWTP mud palm oil production with the addition of 10% crude glycerol adhesive in which caloric value of 5244,83 cal/gr and compressive strength of 4,82 kg/cm2. Keywords: Empty fruit bunch, WWTP mud palm oil production, briquettes, caloric value, compressive strength.
Pengaruh Laju Alir Umpan Terhadap pH, Alkalinitas Dan Asam Volatil Dalam Bioreaktor Hibrid Anaerob Dua Tahap Pada Pengolahan Limbah Cair Industri Sagu Resarizki Utami; Adrianto Ahmad; Edward HS
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 1 (2015): Wisuda Februari Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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In producing sago becomes sago flour be required 20,000 liters of water per ton of sago, where 94% of the water be liquid waste. If the liquid waste which has a high content of organic material is directly dumped into waters, it is very potentially pollute theenvironment. One of the liquid waste processing sago is using by hybrid anaerobic bioreactor two stages. Bioreactor performance is influenced by pH, alkalinity and volatile acid. The purpose of this research is to know the influence of flow rate feedback of pH, alkalinity and volatile acid in hybrid anaerobic bioreactor two stages and determine the stability of the bioreactor. This research was conducted by using hybrid anaerobic bioreactor two stages with stone as a medium for growth of microorganisms. The volume of work being used is equal to 10 liters in the first stage biorector and 20 liters in thesecond stage bioreactor with variated flow rate feedback in the second stage bioreactor, 2.86 liters/day, 4 liters/day and 6.67 liters/day. The results showed that the optimum of flow rate feedback obtained at 2.86 liters/day with an average pH of 6.8, alkalinity of 2341 mg/L, volatile acid of 38,67 mg/L and the stability of bioreactor of 0.0118.Keywords : Alkalinity; Anaerobic; Hybrid bioreactor; pH; Sago watewater; Two stages; Volatile acid
Co-Authors Abdil Aziz Al Hakim Adi Putra Pratama Adrianto Ahmad Afrilia Geishy Karamy Aldita Meitri Dewi Amalia Syakinah Maharani Budaya Annisah Muslimah Aryo Sasmita Ayu Eka Putri David Andrio Davin Zamora Putra Dita Yusrita Elvi Yenie, Elvi Evi Royana Ferizal Nuurfath Hafidawati, Hafidawati Handika Resvandry Lita Darmayanti Maysha Permata Sari Mila Safitri Muhammad Azmi Muhammd Ichsan Mutia Putri Nurul Rahmatika Putri Putri Elisa S Putri Sarah Nurliana Atmaja Resarizki Utami Ribka Hutapea Rudea Faddhisrah Syahbana Sembiring, Rinawati Sesvi Bonita. B Shinta Elystia Suziyana Suziyana Syarfi Daud Tiara Adinda Virghea Septilda Zalchie