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Articles 1,542 Documents
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Mangrove Ecosystem Conservation Efforts: A Case Study of The Minajadri Monitoring Community Group in Pasir Putih Coastal Area, Cilamaya Kulon, Karawang Harsanto Mursyid; Kafa Abdallah Kafaa; Situt Setiawan; Annisa Ghinda Agri Utami; Anindita Dian Safira; Tabita Titah Dewanti; Clara Yolandika
Nusantara Science and Technology Proceedings 3rd International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2022.2748

Abstract

Climate change has become an issue that is often discussed by many parties. One of the impacts is the erosion of the coast by sea waves. A group of environmentally conscious in Karawang are trying to reduce erosion by replanting damaged mangroves as a form of adaptation to environmental changes. The purpose of this paper is to reveal the results of mangrove planting carried out to reduce erosion by seawater. This study employs convergent parallel mixed-methods data collection, which included observation, and mapping with Google Earth and Landsat 8 satellite imagery. Semi-structured interviews with relevant key informants, and literature review. Afterward, descriptive techniques are used to analyze the data/ The findings of this study show that community-led mangrove revegetation initiatives have been successful in reducing seawater abrasion. An area of roughly 6.29 ha with a high-density level makes up the mangrove forest that has been successfully revegetated. It has also evolved into a habitat for numerous mangrove species. Additionally, the community practices ecotourism by using mangrove vegetation. On the other hand, the community's revegetation efforts are highly distinctive, notably by adding sand from sedimentation to generate additional land that is used by the community to build buildings, which may lead to future land ownership rights issues.
Noise Level Evaluation and Mapping in Klotok Landfill Using Golden Surfer Software Muhammad Abdus Salam Jawwad; Muhammad Riza Pahlevi; Isna Nugraha; Rizka Novembrianto; Raden Kokoh Haryo Putro; Syadzadhiya Qotrunada Zakiyayasin Nisa; Restu Hikmah Ayu Murti
Nusantara Science and Technology Proceedings 3rd International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2022.2749

Abstract

Sounds that are not desired by the listener, where the sound can distract, interfere with activities, or cause danger during daily activities, can be called noise. Noise at a certain level originating from the sound of work tools in the production process can cause comfort and health to be disturbed. The lousy impact that often occurs if a person is exposed to noise for too long is the effect on hearing, which can cause deafness, but this can be controlled by using hearing protection equipment that will determine the amount of compensation value to be received by the surrounding community. The existence of the Landfill, which is often located in the middle of community settlements, has a direct impact, one of which is noise during every working hour of the Landfill's operations. One example of a Landfill that is still active today is the Klotok Landfill which is located in Pojok District, Kediri City. In this research, noise mapping was carried out to determine the pattern of noise distribution that occurs in the work environment. Making a noise contour map due to these activities will use a software called Surfer, which is a simple program to generate noise curves (noise contours) spatially the location of potentially hazardous areas. The result shows that activities at the Klotok Landfill have noise values ??ranging from 40 to 92 dB. The highest noise is in the location around landfill area 3, which is actively operating. The high noise level also can be found in the weighbridge, which is a place for transporting vehicles to pass. Evaluations at points 17, 18, and 19 indicated the need for protective wear, such as earmuffs or setting a break every 1.4, 3.6, and 2.2 hours for area workers.
Reverse Logistics Performance Assessment in the Construction Industry Sector Farida Pulansari; Nur Rahmawati; Isna Nugraha; Amelia Ramadhani Ardysti; Handy Natan Permana; Jafni Fara Zahirah
Nusantara Science and Technology Proceedings 3rd International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2022.2750

Abstract

The number of emerging furniture construction industries and the limited availability of virgin materials force companies to innovate both in terms of products and services provided. One way that can be done is through reverse logistics. Reverse logistics itself has many advantages both for the company, for the sustainability of virgin material and for the surrounding environment. PT. X is a company engaged in furniture construction. The company is currently implementing reverse logistics. However, there has never been an assessment of the effectiveness of its implementation. In this research, an analytical approach is used to measure the effectiveness of RL implementation by using a reverse logistic maturity framework. The result from the assessment based on the reverse logistic maturity framework conducted, PT. X categorized in to developed level.
The Influence of the Mass Fraction of Catalyst for Oxy-Hydrogen (HHO) Production on the Dry Cell Type of HHO Generator Tria Puspa Sari; Denny Widhiyanuriyawan; Amajida Sadrina; Ramadan Bimo Anggoro; Rahadi Agung Raharjo; Ryan Rizaldi
Nusantara Science and Technology Proceedings 3rd International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2022.2751

Abstract

One alternative energy that can e developed in the future is water. The water can produce future fuels, namely hydrogen and oxy-hydrogen, through the electrolysis of water. Electrolysis of water is one way to produce hydrogen into electrical and thermal energy conversion of hydrogen and oxygen. This study used a dry cell type HHO generator to produce Oxy-hydrogen. Oxy-hydrogen consists of two hydrogens and one oxygen or Oxy-hydrogen (HHO). Carried out to determine the optimal performance of the mass fraction of the catalyst on the productivity of Oxy-hydrogen by mixing 2500 ml of air and NaHCO3 as a catalyst. The observed mass catalyst fractions were 0.69, 1.38, 1.77, 2.15, 5 7.5, 10, and 15%. The results showed that the best Oxy-hydrogen production performance using a catalyst was 10% catalyst mass fraction with a production rate of 0.02250 l/s with an efficiency of 36.98%.
Effect of Heat-Moisture Treatment on Structural Characteristics and Physico-chemical Properties of Corn Starch-Hydrocolloid: A review Ajeng Ananda Putri; Riski Ayu Anggreini
Nusantara Science and Technology Proceedings 3rd International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2022.2752

Abstract

The use of modified starch, especially from cereal sources in food products, is still very limited in Indonesia. Corn has a fairly high carbohydrate content so it is very potential to modify starch, such as using the heat moisture treatment (HMT) method. The HMT method is a physical modification method of starch, which will be able to produce starch with a moisture content of less than 35%. Several studies have stated that physical modification using HMT and/or can be combined with pectin, gum arabic, xanthan gum and guar gum can improve the physical characteristics of the resulting product. This review aims to determine the physical characteristics of corn starch treated with HMT modification with and without a combination of treatments using Arabic gum, xanthan gum, and guar gum. The results showed that the HMT treatment (100°C, 16 hours, 25%) had the lowest swelling power and solubility values compared to other samples. The HMT-Pectin treatment had a low syneresis value, as the impact it has good freeze- thaw stability compared with the others. Meanwhile, corn starch-modified by HMT with gum (gum arabic, xanthan gum, and guar gum) significantly did not change the type of crystallinity of starch.
Design of Hazard Analysis Critical Control Point (HACCP) in Rendang Padang Restaurant Erwan Adi Saputro; Moh. Nofianto; Arbiter Khalida Bramanta; A.R. Yelvia Sunarti
Nusantara Science and Technology Proceedings 3rd International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2022.2753

Abstract

Food safety and nutrition will determine the degree of health. Many restaurants sell various types of food but not yet known whether the food served is safe or not. One of the typical foods from Padang restaurants is rendang. The cooking process of rendang needs a long time, so rendang is made in large quantities. It causes rendang to experience storage long enough that it can trigger bacterial growth. Therefore, HACCP is needed to prevent food contamination. This study aims to determine the design of HACCP in rendang padang restaurant. This research used survey and direct interview methods with the owner to determine the design and implementation of HACCP. Based on the analysis, show that the formulation of the HACCP stages shows that the main points of Critical ingredients are spices and coconut milk, receipt and preparation of raw materials, preparation of equipment used, cooking process, storage, and distribution. Corrective action that can be taken is to return raw materials and provide advice to the seller and always clean. From the results of bacterial testing on rendang, it meets the requirements of SNI 7474:2009. Padang restaurant entrepreneurs are advised to choose suppliers of raw materials implement a food safety system and apply personal hygiene and food sanitation hygiene
Analysis of Combustion Temperature on Specific Fuel Consumption (SFC) of Diesel Engines Using B30 Fuel in the Long Term Performance Erwan Adi Saputro; Wiliandi Saputro
Nusantara Science and Technology Proceedings 3rd International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2022.2754

Abstract

The world's energy keeps continuing to increase, meanwhile, the fossil energy used creates emissions problems and long-term dependence. Therefore, it is necessary to diversify energy to new and renewable energy. Especially to replace fossil energy whose availability is reducing. One alternative energy that has the potential to continue to be developed is biodiesel. Indonesia is currently one of the largest palm oil-producing countries in the world with a total production of 40 million tons by 2020. Biodiesel can be used directly without having to modify the combustion chamber of a diesel engine. However, the use of biodiesel, especially B30 (30% biodiesel + 70% diesel mixture) which is currently used in Indonesia, must receive special attention for the effects if applied to diesel engines in the long term. Therefore, the purpose of this study is to analyze the use of B30 on the performance of the diesel engine produced with a test time of 200 hours of operation. This study uses an experimental method, with a loading using a 4000 Watt halogen lamp. Engine rotational speed is kept constant at 2200 RPM and measurement of fuel consumption per unit time using a burette. Fuel consumption was measured using a manual technique with a 20 ml capacity burette, while the time the engine spent fuel was measured using a stopwatch. Based on the test results, the average power and torque values ??produced by the B30 engine are 4.45 kW and 12.54 N.m. Meanwhile, the value of specific fuel consumption and average thermal efficiency produced is 0.28 kg/kW.hour and 29.43%. Performance changes in diesel engines can be influenced by several factors including the calorific value of the fuel and the viscosity value of the B30 fuel used.
Reducing Zinc and Chromium in Wastewater Treatment Biosolid Through Sulfuric Acid Extraction Mu’tassim Billah; Disty Nur Rohmah; Faisal Amri Sholahuddin; Renova Panjaitan; Kindriari Nurma Wahyusi; Retno Dewati
Nusantara Science and Technology Proceedings 3rd International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2022.2755

Abstract

The separation of heavy metals, zinc (Zn) and chromium (Cr), in biosolid waste can be carried out by an extraction process using H2SO4 as a solvent. The extraction process was carried out with a variation of time agitation and sulfuric acid concentration. The extracted cake was then analyzed using the atomic absorption spectrophotometry (AAS) method. The most effective reduction in Zn and Cr levels was obtained at 120 minutes and a solvent concentration of 1.5M with an efficiency of 98.80% and 97.89%, respectively.
Corrosion Control of Metal Alloy Using Inhibitor Synergy: Phospate – Carbohydrazide Fachrul Nurcholis; Aditya Irfansyah; Isni Utami; Lilik Suprianti
Nusantara Science and Technology Proceedings 3rd International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2022.2756

Abstract

Stainless steel is a kind of metal alloy that is widely used in industrial equipment. The problem faced by all metals that come into contact with corrosive medium is corrosion. Corrosion or metal deterioration can not be avoided since it is a spontaneous reaction between the metal with its environment. One method to control the corrosion of metal alloy is by adding the inhibitor into the medium. The addition of inhibitors in synergy is discussed. The addition of a phosphate inhibitor as a film-forming role on the metal surface is assisted by the addition of carbohydrazide components in controlling dissolved oxygen levels in seawater. The addition of inhibitors in synergy is expected to increase the efficiency of the inhibitor’s performance in a single work. This research aims to determine the best composition for phosphate and carbohydrazide inhibitors due to the effect of synergy in controlling the corrosion rate of metal alloys in seawater. The synthetic seawater medium was the 3.5% NaCl dilution prepared by diluting the NaCl crystal into the demineralized water. The phosphate inhibitor was added into the medium with various compositions (100, 200, 300, 400, and 500 ppm). Then, the carbohydrazide was added into the medium with the multiple compositions 5, 7.5, 10 and 15. The corrosion rate measurement was done by using Electrochemical Impedance Spectroscopy Instrument. The Stainless steel sample was prepared by cutting the stainless steel plate with a size 1cm x 1 cm and a thickness of around 2- 3 mm. The measurement process was done by putting the specimen in the working electrode and dipping into the medium with and without the inhibitors. The results show that the addition of inhibitor effectively decreases the corrosion rate. The best result is obtained when the ratio between phosphate and carbohydrazide is 100:10 ppm, which reduces the corrosion rate from 0.40128 mpy to 0.008 mpy
Plankton Diversity in a River Nearby Klotok Landfill, Kediri, East Java Restu Hikmah Ayu Murti; Thineza Ardea Pramesti; Isna Nugraha; Praditya Sigit Ardisty Sitogasa; Kabul Fadilah; Aussie Amalia; Muhammad Abdus Salam Jawwad
Nusantara Science and Technology Proceedings 3rd International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2022.2757

Abstract

Landfill management in Indonesia is mostly operated by open dumping as well as the Klotok’s Landfill at Klotok Village, Kediri City. This landfill has three lands, and the third landfill is currently actively operating. The pollution is like the occurrence of leaks in leachate storage tanks which is near the Klotok river. That situation can make the leachate enter the river and affect the physicochemical conditions of the water which have an impact on decreasing the diversity and abundance of plankton. The diversity of plankton species in aquatic ecosystems is often used as an indicator to determine the primary productivity of waters and the condition of the aquatic ecosystem, so this research was carried out to determine the diversity of plankton species in the Klotok river, so the quality of the water can be known. This research was conducted in the Klotok River, Kediri City, East Java. Samples were taken upstream of the Klotok River, near the leachate treatment Plant, and downstream of the Klotok River. Samples were taken as much as 21 liters by pouring method. The samples are poured into plankton nets. The result shows that plankton diversity in the water body near Klotok landfill is between 0,49 to 0,67, which indicates that the diversity index according to Shannon-Wiener is 0,49 where the species diversity is low, the number of individual species is low, the ecosystem is unstable, and the waters are degraded.

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