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<![CDATA[Uji Aktivitas Anti Bakteri Ekstrak Etanol Daun Pacar Air (Impatiens balsamina L.) terhadap Bakteri Escherichia coli ]]>
<![CDATA[Hardiana Hardiana]]>;
<![CDATA[Yuni Dewi Safrida]]>;
<![CDATA[Rizki Khana Maulianda]]>
<![CDATA[ Jurnal Serambi Engineering Vol 5, No 4 (2020) ]]>
Publisher : <![CDATA[Fakultas Teknik ]]>
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DOI: 10.32672/jse.v5i4.2332
<![CDATA[(Impatiens balsamina L.) is an ornamental plant that has been widely developed as a medicinal plant. Secondary metabolites of water henna plant (Impatiens balsamina L.) are known to contain flavonoids. In the field of pharmacology this plant is often used because it has antibacterial agents. This study aimed to determine the inhibitory effect and the optimum antibacterial concentration of the ethanol extract of the leaves of water henna (Impatiens balsamina L.) against the growth of Escherichia coli bacteria with treatment concentrations those are 25%, 50%, 75%, and 100%. This research was conducted at the Akafarma Microbiology Laboratory in Banda Aceh. The method used was experimental with disk diffusion (disc method). The results showed that in repetition I and II with concentrations of 25%, 50 percent, 75 percent, and 100 percent, the zone of inhibition was obtained respectively those are 23 mm, 26 mm, 29.5 mm, and 31 mm. The optimum result of the ethanol extract of Impatiens balsamina L. leaves in inhibiting the growth of Escherichia coli is at the concentration of 100% with an inhibition zone diameter of 31 mm.]]>
<![CDATA[Penyisihan Krom pada Pengolahan Air Limbah Penyamakan Kulit Menggunakan Metode Elektrokoagulasi ]]>
<![CDATA[Lina Hasyyati]]>;
<![CDATA[Etih Hartati]]>;
<![CDATA[Djaenudin Djaenudin]]>
<![CDATA[ Jurnal Serambi Engineering Vol 5, No 4 (2020) ]]>
Publisher : <![CDATA[Fakultas Teknik ]]>
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DOI: 10.32672/jse.v5i4.2317
<![CDATA[Tanning is the process that converts animal hides and skin into stable and imputrescible products called leather. The production processes in a tanning use chromium sulfat. Chrome metal is a heavy metal that is toxic, so the waste water from the leather tanning process will pollute the environment if it is not treated. In this research, wastewater treatment is used by electrocoagulation method to determine the effect of operating on the chromium removal to obtain optimal conditions. In this study, electrocoagulation experiments were using aluminum electrodes. Electrocoagulation process was carried out in 9 variations with parameters pH, electrical current and time where pH was set at pH 7. Electrical current done on 0.5 A, 1 A, and 1.5 A. Time done in 1 hour, 2 hours and 3 hours. The experiment results were analyzed by comparing the concentration before processing and concentration after processing to obtain efficiency. Based on the experimental result on 9 variations, the variation that has the highest efficiency is at electrical current 1.5 Ampere and time 3 hours. This variation can remove 78.95 % chrome concentration from 245.1 mg/L to 51.6 mg/L.]]>
<![CDATA[Identifikasi Senyawa Boraks pada Bakso secara Non Destruktif Menggunakan Spektrum Inframerah Dekat dan Principle Component Analisys ]]>
<![CDATA[Budiara Pahlawan]]>;
<![CDATA[Yunardi Yunardi]]>;
<![CDATA[Agus A Munawar]]>;
<![CDATA[Friska Meirisa]]>;
<![CDATA[Hesti Meilina Meilina]]>
<![CDATA[ Jurnal Serambi Engineering Vol 5, No 4 (2020) ]]>
Publisher : <![CDATA[Fakultas Teknik ]]>
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DOI: 10.32672/jse.v5i4.2337
<![CDATA[The combination of Near Infrared (NIR) Spectroscopy and multivariate analysis using Principle Component Analysis (PCA) was developed to detect the presence of borax in meatballs. The conventional analysis used to detect the presence of borax has been considered inefficient because it is only able to qualify for the presence of borax, but cannot determine the dose of borax used. This study aimed to identify the presence of borax in meatballs using NIR Spectroscopy in the 1000-2500 nm range and maximize PCA performance by combining MSC and SNV pre-treatment with Savitzky Golay second derivative. The results showed that the identification of borax can occur at a wavelength of 1800 - 2500 nm, which is indicated by vibrations at a wavelength of 1865 nm with the atomic structure of C-Cl and the combination of pre-treatment of the second derivative of Savitzky Golay also successful for grouping the data to be better.]]>
<![CDATA[Konsentrasi Anion Di Udara Ambien Dan Analisis Lintasan Balik Sumber Polutan Di Kota Semarang ]]>
<![CDATA[Haryono S Huboyo]]>;
<![CDATA[Mochtar Hadiwidodo]]>;
<![CDATA[Mochamad Nurihsan]]>
<![CDATA[ Jurnal Serambi Engineering Vol 5, No 4 (2020) ]]>
Publisher : <![CDATA[Fakultas Teknik ]]>
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DOI: 10.32672/jse.v5i4.2322
<![CDATA[Air pollution in urban areas shows fluctuations in quality due to increasingly complex pollutant sources. This study aimed to determine the content of water soluble anions and sources of dust pollutants using the back trajectory method. Air quality dust was taken at the end of 2019 in Pedurungan District and Gunungpati District in Semarang City for 2 days with a dust measuring device at each sample point. From each sample, a laboratory test was carried out on its anion content. Anions were analyzed at the Diponegoro University Integrated Laboratory by ion chromatography. The dust concentration ranges from 60 - 90 µg/Nm3 with anion content below 25%. Some of the dominant anions are thought to come from industrial activities such as burning coal and densely populated areas in the city of Semarang. Based on the results of the trace back from the origin of the dust, it can be seen that the dust comes from the south area (Genuk area). Therefore, air pollution mitigation is directed to the South, where the potential comes from industrial activities and vehicles.]]>
<![CDATA[Pemilihan Daerah Pelayanan Sampah di Bandung Utara Berdasarkan Parameter Daerah Prioritas SNI-19-2454-2002 ]]>
<![CDATA[Lutfi Adhari]]>;
<![CDATA[Yulianti Pratama]]>;
<![CDATA[Nico Halomoan]]>
<![CDATA[ Jurnal Serambi Engineering Vol 5, No 4 (2020) ]]>
Publisher : <![CDATA[Fakultas Teknik ]]>
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DOI: 10.32672/jse.v5i4.2333
<![CDATA[The North Bandung Service Area (WP) is a waste WP which has a service level in 2017 of 79.5%, there are still some unserved areas. Each North Bandung WP has different regional characteristics, so according to previous research, service areas were formed using the cluster analysis method to classify regions based on regional characteristics in order to support the target service level of 90%. The purpose of this planning is for the development of previous research by planning the existing priority service area waste management system as an effort to achieve the target of waste services in WP North Bandung. The selection of priority areas is based on the parameters for determining priority areas for SNI 19-2454-2002. This research is expected to solve the problem of waste management system in WP North Bandung.]]>
<![CDATA[Identifikasi Penentuan Skala Prioritas Penanganan Genangan Atau Banjir Di Kecamatan Karawang Barat ]]>
<![CDATA[Trisha Ajeng Larasaty]]>;
<![CDATA[M. Candra Nugraha]]>;
<![CDATA[Etih Hartati]]>
<![CDATA[ Jurnal Serambi Engineering Vol 5, No 4 (2020) ]]>
Publisher : <![CDATA[Fakultas Teknik ]]>
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DOI: 10.32672/jse.v5i4.2318
<![CDATA[West Karawang District is a center of local activities with a service scope the whole Karawang Regional with most populous region by 142.509 persons. Based on Karawang Regional Spatial Plans Year 2011 – 2031, West Karawang Sub-district is a flooded vulnerable area when rain season. That area is along the Citarum River stream with. Priority scale determination of flood is done with comparison method of the existing flood condition with the parameters in Peraturan Menteri Pekerjaan Umum dan Perumahan Rakyat No.12 Tahun 2014 tentang Penyelenggaraan Sistem Drainase Perkotaan. There were 13 flood points in West Karawang District with the highest priority scale, Tanjungpura Sub-District. In Tanjungpura Sub-District, there are 3 flood points with a height of 50-30 cm, 1 Ha of flood area, and the length of flood lasts for 10 hours. The puddle is located in a densely populated residential area which causes a lot of losses to residents.]]>
<![CDATA[Kemampuan Filter Rokok Non-Pakai Sebagai Adsorben Dalam Mengurangi Gas Emisi CO Dan HC ]]>
<![CDATA[Mukhammad Rifki Hendianto]]>;
<![CDATA[Novirina Hendrasarie]]>
<![CDATA[ Jurnal Serambi Engineering Vol 5, No 4 (2020) ]]>
Publisher : <![CDATA[Fakultas Teknik ]]>
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DOI: 10.32672/jse.v5i4.2355
<![CDATA[Air is the most important element for life. However, the air we breathe now tends to be dirty and not good for health. Air pollution occurs due to transportation activities. Cigarette filter manufacturers produce cigarette filters that are not suitable for use because they do not meet standards. This research utilizes an unused cigarette filter which can only become waste that was difficult to decompose by nature. This study aimed to assess the ability of unused cigarette filters to reduce gas emissions, carbon monoxide (CO), and hydrogen carbon (HC). This unused cigarette filter, known as an adsorbent, was made of highly absorbed cellulose acetate. These cigarette filter adsorbent has been studied on motorcycle exhausts since the 2000s. By modifying the type of cigarette filter, namely the ordinary cigarette filter in which carbon is added. The results showed that the unused cigarette filter was able to become an adsorbent for pollutants in the air, especially CO and HC. The type of cigarette filter that uses additional carbon has been shown to reduce CO and HC concentrations by 60% and 57.5%, respectively, than conventional cigarette filters.]]>
<![CDATA[Analisis Kualitas Air dan Daya Tampung Sungai dengan Metode Qual2Kw (Studi Kasus: Sungai Code, Yogyakarta) ]]>
<![CDATA[Nelly Marlina]]>;
<![CDATA[Widodo Brontowiyono]]>;
<![CDATA[Rosida Chasna]]>
<![CDATA[ Jurnal Serambi Engineering Vol 5, No 4 (2020) ]]>
Publisher : <![CDATA[Fakultas Teknik ]]>
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DOI: 10.32672/jse.v5i4.2323
<![CDATA[Code River is one of the rivers in the D.I Province Yogyakarta that crosses the administrative areas of Sleman Regency, Bantul Regency and Yogyakarta City. Each administrative region provides input of waste with various contents and affects the capacity of the pollution load with the study area along ± 21 km. The study was conducted at the point of Ngentak, Gondolayu, Sayidan, Keparakan, Tungkak, Ngoto and Wonokromo. The study area is divided into 6 segments for water sampling. In the study conducted with 4 scenario simulations based on existing conditions, prediction of population in the next 5 years, conformity of class I quality standards without pollutant burden and trial error. The method used to analyze water quality is the QUAL2Kw method. By using this software, it can be easier to simulate changes in the upstream to downstream areas. This study aims to analyze the capacity of the pollution load on the concentration of Ammonia, Phosphate and TSS in order to determine the strategy of water quality management in the Code River]]>
<![CDATA[The Green GDP Implementation in Country-Based Environmental Management System: A Review ]]>
<![CDATA[Filson Maratur Sidjabat]]>;
<![CDATA[Asyifa Apsari]]>
<![CDATA[ Jurnal Serambi Engineering Vol 5, No 4 (2020) ]]>
Publisher : <![CDATA[Fakultas Teknik ]]>
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DOI: 10.32672/jse.v5i4.2314
<![CDATA[The economy, environment, and social pillars of sustainability demand the environmental management system (EMS) to improve the cycle system continuously. The result of the evaluation and review stages needs to account for the measurement method that potentially enhances the policy implication. Thus, the green GDP found to be practically suited with current country-based EMS, where it shows by China’s green GDP and GDP gap reached 5% in 2016. The objective of this paper is to acknowledge the implementation of green GDP in the country-based environmental management system. This paper is based on a literature review process, which covered around eight references. The result and discussion lead to the implementation of green growth indicator in national and regional green economy strategy of Indonesia, China, and Finland. The challenges of unstandardized indicators and calculation formula prospected to be tackled by reflecting the current indicator with potential global adjusted formula and valuation through international policy enforcement and integrated communication. The conclusion describes that green GDP is potentially integrated with EMS to ensure the improved cycle of sustainability.]]>
<![CDATA[Produksi Asam Laktat dari Fermentasi Limbah Cair Olahan Kelapa dengan Variasi Konsentrasi Inokulum Lactobacillus acidophilus ]]>
<![CDATA[Ratna Ratna]]>;
<![CDATA[Ulfa Triovanta]]>;
<![CDATA[Darwin Darwin]]>
<![CDATA[ Jurnal Serambi Engineering Vol 5, No 4 (2020) ]]>
Publisher : <![CDATA[Fakultas Teknik ]]>
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DOI: 10.32672/jse.v5i4.2334
<![CDATA[The aim of this research is to study the fermentation technique of coconut processed liquid waste by varying the inoculum concentration of Lactobacillus acidophilus bacteria for lactic acid production. This research was carried out in several steps, namely the first step was the inoculum cultivation process of Lactobacillus acidophilus bacteria, the second step was the fermentation process of coconut water with variations in the concentration of Lactobacillus acidophilus bacteria inoculum, namely 5%, 10% and 20%. Analysis of lactic acid products, pH, glucose, Total Dissolved Solid (TDS), Total Suspended Solid (TSS) and Volatile Suspended Solid (VSS). The variation in the concentration of Lactobacillus acidophilus bacteria inoculum 20% is the most optimum to produce total lactic acid for batch and continuous systems. The results of the correlation analysis for inoculum variations of 5%, 10% and 20% had a strong relationship with lactic acid production, decreased pH and decreased glucose levels. The greater the inoculum concentration, the greater the decrease in the TDS, TSS and VSS content.]]>
