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Journal of Research and Technology
Published by Universitas NU Sidoarjo
ISSN : 24605972     EISSN : 24776165     DOI : -
Core Subject : Social, Engineering,
Chemical Engineering, Chemistry & Bioengineering Engineering Environmental Science Industrial & Manufacturing Engineering
Journal of Research and Technology published since 2015 contains a collection of a selected articles from the results of research and study of literature which is relevant to industrial , chemical, and environment engineering. Target readers of the Journal of Research and Technology are scientists, academics, and practitioners from various fields of industry.
Arjuna Subject : -
Articles 454 Documents
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PENGOLAHAN LIMBAH CAIR RUMAH POTONG HEWAN MENGGUNAKAN ROTATING BIOLOGICAL CONTACTOR MODIFIKASI SLUDGE ZONE Hendrasarie, Novirina; Santosa, Bagas Aldin
Journal of Research and Technology Vol. 5 No. 2 (2019): JRT Volume 5 No 2 Des 2019
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v5i2.303

Abstract

Slaughterhouse wastes generally contain blood, proteins, fats, and suspended solids that cause a high load of organic matter which can pollute rivers and water body. The waste water of slaughter house will cause changes on the quality of the water, such as increased colour, pH, total dissolved solids, suspended solids, fats, BOD5, ammonium, nitrogen and phosphor. In this study aims to reduce the content of slaughterhouse waste water, using Rotating Biological Contactor (RBC) modified with a sludge zone. It was expected that by modifying the sludge zone, the efficiency of RBC performance can be further improved. This study used a variety of Hydraulic Retention Time (HRT) of 2.8 hours, 3.5 hours and 4.2 hours along with waste water dilution of 50%, 75% and 100% using the continue system into clarifier process. Based on the results of the study, the decreased percentage in COD concentration reached 86.68%, the total decreased percentage of Nitrogen concentration reached 66.11% and the decreased percentage in TSS concentration reached 71.87%. The pH value is neutral with a range of 7.6-8.3 with temperatures range of 26oC-30oC during operation. The highest DO values reached 5.2 mg/L with a range of organic surface loading values of 89.77 - 135.45 grams BOD/m2 .day. The organic load figure exceeds the RBC organic load standard which averages around 8-20 grams/BOD/m2.day. The increased of organic load, indicates that RBC with modified sludge zone was able to treat wastewater with high organic load, such as slaughterhouse waste water.
Kemampuan Adsorben dari Limbah Serbuk Gergaji Kayu Jati terhadap Penurunan Kandungan Timbal (Pb) pada Limbah Cair dengan menggunakan Sistem Batch Firmanto, Rafli Puji; Rr. Diah Nugrahaeni Setyowati; Dedy Suprayogi
Journal of Research and Technology Vol. 7 No. 2 (2021): JRT Volume 7 No 2 Des 2021
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v7i2.305

Abstract

Teakwood sawdust is a by product of the sawmilling process used by industry and wood enterprises. One way to put the garbage to good use is to use it as a raw material for creating adsorbents for adsorbing heavy metals in waste water. The goal of this study is to use a batch system to investigate the ability of teakwood sawdust to adsorb lead (Pb) in liquid waste and to establish the optimal adsorption isotherm modeling in the adsorption process for the processing of lead (Pb) heavy metal waste. This is an experimental study that uses a variety of adsorbent masses, including 1 gram, 2 gram, 3 gram, 4 gram, and 5 gram, as well as a variety of adsorbent activation methods.According to the study's findings, variations in the mass of adsorbent used 4 gram resulted in average absorption of 81.14 percent and 94.15 percent, respectively, while variations in the adsorbent activation method with the activation process and variations in the adsorbent activation method without the activation process resulted in an average absorption of 81.14 % and 94.15 %. respectively, while the average value of the adsorption capacity in The adsorption model isotherm langmuir with R2 value of 0,6537 is suitable for the adsorption process employing teakwood sawdust adsorbent.  
Pola Sebaran Spasial Logam Berat Kadmium di Sungai Kawasan Industri Berbek Kabupaten Sidoarjo Fitrianah, Listin; Agus Rachmad Purnama
Journal of Research and Technology Vol. 7 No. 1 (2021): JRT Volume 7 No 1 Jun 2021
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v7i1.306

Abstract

Berbek Industrial Estate is the largest industrial area in Sidoarjo Regency. Industrial activities have a positive and negative impact on the environment. One of the negative impacts on the environmental because of industrial activities is decreased water quality. The water quality around the Berbek industries suffers decreased water quality. This study aims to mapping and analysing the spatial distribution patterns of cadmium which are expected to provide information patterns in the area. The sample taken is river water in the area of ​​the Berbek Industrial, Waru District, Sidoarjo Regency. The methods used are surveys and laboratory tests. The distribution pattern of cadmium in the waters was carried out by spatial analysis used in ArcGis 10.1 Kriging Interpolation method. The highest cadmium concentration was found at the river location in Wedoro, namely 0.18 ppm, while the lowest cadmium concentration was found at the river location in Gedongan, namely 0.10 ppm. The patterns of cadmium spread in river area of ​​Berbek Industrial showed that cadmium which was came from Wedoro river was higher compared to other river spreads.  
Sebaran Timbal pada Tanah di Areal Persawahan Kabupaten Sidoarjo Fitrianah, Listin; Agus Rachmad Purnama
Journal of Research and Technology Vol. 5 No. 2 (2019): JRT Volume 5 No 2 Des 2019
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v5i2.307

Abstract

The existence of this industry in Sidoarjo has the negative potential impact to the environment, namely the accumulation of heavy metals in paddy fields. The magnitude of the impact that can be caused by the presence of lead heavy metals, research is needed that is expected to provide information related to the concentration and distribution of lead on land in Sidoarjo district. The distribution will later be elaborated by mapping using Geographic Information Systems. The purpose of this research is to identify the potential distribution of lead heavy metals in soil and soil in Sidoarjo paddy fields and the potential impact of lead accumulation on the environment. Samples taken were soil in the paddy fields, with 18 location points. The method used in the identification of lead distribution in paddy fields in Sidoarjo district is survey and laboratory testing, where the pattern of lead content distribution in paddy fields is carried out using spatial analysis with the spline with barrier method Arcgis 10.1. The highest distribution of lead content in paddy fields in Wonoayu District, 0.46 ppm. The highest dominant distribution pattern of lead pollution in paddy fields is Wonoayu and Waru sub-districts.  
PENGARUH TREATMENT ALKALI TERHADAP KARAKTERISTIK FIBER SABUT KELAPA SAWIT DAN PELEPAH PISANG SEBAGAI BAHAN KOMPOSIT POLIMER Setiawan, Adhi; Vivin Setiani; Fitri Hardiyanti; Devina Puspitasari
Journal of Research and Technology Vol. 5 No. 2 (2019): JRT Volume 5 No 2 Des 2019
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v5i2.321

Abstract

The use of synthetic fibers in the fabrication of polymer composite materials has a negative impact on the environment. Natural fibers such as palm oil waste and banana pseudostem can be an alternative material for synthetic fibers because they are more economical, high specific strength, and environmentally friendly. The alkali treatment needs to be carried out on fibers for removal of lignin, hemicellulose, and impurity so that they can improve interfacial bonding between the fiber and the polymer matrix. The alkali treatment was carried out through fiber immersion in conditions without NaOH, 5% wt NaOH solution, and 10% wt for 24 hours. Fiber before and after alkalization were analyzed using Scanning Electron Microscope (SEM), X-Ray Difraction (XRD), Fourier Transform Infrared (FTIR), and Thermogravimetric Analysis (TGA) methods. The results showed that alkali treatment was effective in removing the components of lignin, hemicellulose, and impurities in fiber. The result of the SEM showed that the treated fiber surface had a cleaner surface than treatment without fiber. The alkalitreatment process can improve the crystallinity and crystallinity index of the fiber due to amorphous component removal of lignin and hemicellulose. The TGA result of palm oil fiber with alkali treatment and without alkali treatment produced weight loss of 88,2% and 98,4% respectively. This showed that the alkali treatment can increase the thermal resistance of the palm oil fiber.
PEMANFAATAN LIMBAH DAUN NANAS (ANANAS COSMOSUS) SEBAGAI ADSORBEN LOGAM BERAT Cu Mayangsari, Novi Eka; Mirna Apriani; Veptiyan, Egata Dwi
Journal of Research and Technology Vol. 5 No. 2 (2019): JRT Volume 5 No 2 Des 2019
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v5i2.322

Abstract

Pineapple leaf waste (Ananas cosmosus) contains a constituent component in the form of cellulose and lignin. Cellulose, hemicellulose, and lignin bind to each other to form lignocellulose. The high cellulose content can be used as an adsorbent through the process of delignification or removal of lignin. This study aims to determine the characteristics and ability of pineapple leaf cellulose to remover heavy Cu metals. Applied pineapple leaves to be used are equalized to 60 mesh then delignified for 70 and 90 minutes by mixing pineapple powder using 9% NaOH with a ratio of 1:30 (w/v). Pineapple leaves are characterized by chesson, SEM, and XRD analysis. The results of Chesson analysis showed that pineapple leaf cellulose had a cellulose content of 25.33% and the delignification time of 70 minutes resulted in the highest cellulose content of 59.12%. The XRD diffractogram showed pineapple leaf cellulose including type I cellulose. The highest degree of crystallinity was obtained by pineapple leaf cellulose with a delignification time of 90 minutes which was equal to 65.98%. The adsorption process was observed with variations in contact time 30, 60, 90, and 120 minutes. The highest Cu metal adsorption was pineapple leaves with a delignification process of 70 minutes with a contact time of 90 minutes.
EFEKTIVITAS EKSTRAK BUAH LADA HITAM (PIPER NIGRUM L) KOMBINASI JAHE MERAH (ZINGIBER OFFICINALE) UNTUK MENGOBATI PENYAKIT VITILIGO Mimatun Nasihah; Fajrin, Fitriana Ikhtiarinawati
Journal of Research and Technology Vol. 5 No. 2 (2019): JRT Volume 5 No 2 Des 2019
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v5i2.324

Abstract

Vitiligo is a disease that causes skin color fading caused by cells that form melanin unfunctionally. The initial symptom is the appearance of white patches that will gradually become brighter and wider. Black pepper, aside from being used as a complement to cooking spices, its piperin content can stimulate the formation of skin melanin. Red Ginger is also believed to heal bad cells in the skin or restore damaged skin naturally, eliminating vitiligo because it contains collagen. This research used the experimental method. Data collection included pH test, organoleptic test, cream effectiveness test and pharmaceutical test. Data analysis used the Anova One Way to find out whether differences cream composition affected color, texture, thickness, and fondness. Test of T-Paired was used to determine differences vitiligo exposure before and after treatment. The comparison of Black Pepper: Red Ginger: Emulgade were (1:2:1), (1:1:1), (1:1:2), (1:1:3), and (1:3:8). Anova One Way test results showed that F-count to cream color (24,718)> F-table (4.53), F-count to cream texture (11,834)>F-table (4.53), F-count to cream density (15,001)>F-table (4.53) and F-count to cream fondness (6,517)>F-table (4.53). This showed that there was a significant difference for the combination of red ginger black pepper cream on color, texture, density and fondness on the cream. The effectiveness test of cream used T-paired test with result Tcount (5.277)>T-table (2.131), it showed that there was a significant difference in the vitiligo exposure before and after being given a cream of black pepper and red ginger. Pharmaceutical test explained that cream were homogeneous, semi-solid, had a distinctive odor, brownish yellow color, pH 6, and had a spread capacity of 5.2 cm.
ANALISIS KUALITATIF DAN KUANTITATIF CEMARAN LOGAM BERAT TIMBAL (Pb) DAN KADMIUM (Cd) PADA PRODUK KOSMETIK PENSIL ALIS MENGGUNAKANSPEKTROFOTOMETER SERAPAN ATOM (SSA) Djamilah Arifiyana; Fernanda, MA. Hanny Ferry
Journal of Research and Technology Vol. 4 No. 1 (2018): JRT Volume 4 No 1 Jun 2018
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v4i1.331

Abstract

The aim of this study was to identify and determine the heavy metal content of lead (Pb) and cadmium (Cd) towards eyebrow pencil registered and not registered by the Food and Drug Supervisory Agency (BPOM). This research was conducted in several markets in Surabaya. Twelve eyebrow pencil items were investigated for lead (Pb)and cadmium (Cd). Simple reagents, included HCl, NaOH, KI, Na2S2O3 and NH4OH were used to identify the presence of these heavy metal first. The study results showed that samples of eyebrow pencil registered and unregistered by BPOM RI after being tested turned out to contain lead and cadmium in a range of 1.092-5,834 mg/kg and 0,054-0.243 mg/kg, respectively. The content is still within what is required based on the regulations of BPOM RI, < 20 mg/kg for lead content and < 5 mg/kg for cadmium content. In short, all the sample of eyebrow pencil contained lead (Pb) and cadmium(Cd)within what is required based on the regulations of BPOM RI.
ANALISIS TINGKAT TOKSISITAS LIMBAH PEWARNAAN JEANS MENGGUNAKAN IKAN NILA (Oreochromis niloticus) Caroline, Jenny; Rachmanu Eko Handriyono; Sonia S. Ximenes; Kusuma, Maritha Nilam
Journal of Research and Technology Vol. 5 No. 2 (2019): JRT Volume 5 No 2 Des 2019
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v5i2.339

Abstract

Jeans dyeing is one of the large or small scale industries that produces liquid waste from the coloring process. Liquid waste that enters the water will cause environmental pollution. It is necessary to study about the nature and characteristics of jeans dye wastewater through the toxicity test that refers to USEPA (2000) and OECD (2004) standards. Tests carried out by entering the concentration of certain wastewater in 5 (five) reactors with tilapia fish (Oreochromis niloticus) biota. Preliminary research conducted in 7 day acclimation process and 1 day range finding test. Running process carried out for 96 hours for fish 5 cm. The analysis was carried out every 24th, 48th, 72th and 96th hour for analysis of temperature, pH, DO, and mortality. Heavy metal (Cr) analysis was carried out in fish bodies and wastewater at each concentration. The initial characteristics of jeans stained liquid waste for pH: 7, temperature: 30, 7ºC, DO: 8.5 mg/l, TSS: 1040.0 mg/l; BOD: 137 mg/l; COD: 484.8 mg/l and Total chrome: 3.079 mg/l. The level of LC50 toxicity concentration in tilapia fish fish 5 cm size of 12.59% results obtained from the calculation of probit with excel software. The content of chrome total (Cr) contained in the test biota for 96 hours ranged from 1.03 l/kg to 1.93 l/kg.
Studi Pengaruh Variasi Resin terhadap Laju Korosi pada Material FRP Novitrie, Nora Amelia; Alvido Toto Wijaya; Bambang Antoko
Journal of Research and Technology Vol. 6 No. 2 (2020): JRT Volume 6 No 2 Des 2020
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v6i2.343

Abstract

Pipes in the oil and gas industry use carbon steel which contains a corrosive fluid with fluctuating acidity. This condition causes the corrosion resistance of the pipe to decrease so that other materials that are more resistant to corrosive conditions are needed, for example Fiberglass Reinforced Plastic (FRP). FRP is a composite material made of resin which is then formed into pipes. In this study, trials were carried out on polyester resin, silicon rubber resin and epoxy resin to determine the value of their corrosion rate. The level of resistance of a material to corrosion generally has a corrosion rate value between 0.025 - 5.08 mmpy. The method used is the immersion test of the specimen using the ASTM G31 - 72 standard.The results obtained from this experiment are that polyester has the lowest corrosion rate than epoxy and silicon rubber and polyester resin with a fiber composition of 40% and fiber position 40° has a corrosion rate of 0.566 mmpy so that it meets the level of resistance of a material to corrosion.  

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