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ASTM A36 steel has relatively low hardness and corrosion resistance, making surface treatment necessary to improve its material properties. This study aims to determine the effect of temperature and holding time variations in the pack carburizing process on the hardness, corrosion rate, and microstructure of ASTM A36 steel. The pack carburizing process was carried out using coconut shell charcoal as the carburizing medium with temperature variations of 850°C, 900°C, and 950°C and holding times of 20, 40, and 60 minutes, followed by quenching in distilled water. Hardness testing was conducted using the Rockwell B scale (HRB) method, corrosion rate testing was performed according to the ASTM G31 method, and microstructural observations were carried out using Scanning Electron Microscopy (SEM). The results showed that increasing the temperature and holding time improved the hardness and corrosion resistance of ASTM A36 steel. The highest hardness value was obtained at a temperature of 950°C with a holding time of 60 minutes, reaching 114.1 HRB. Microstructural analysis revealed the formation of a martensitic phase on the specimen surface after the carburizing process.

One of the various salted egg products with smoking methods is smoked salted eggs which have a distinctive aroma and taste. This study aims to determine the effect of smoking and storage time  and its  interaction on  smoked salted  eggs  with on  physical  and  chemical  properties, total microbes as well. This research is experimental by using ducks eggs and a mixture of coconut shells and fibers, and rice husks as smoke fuel. The experimental design used is Randomized Complete Block Design (RCBD) with a 3x5 factorial pattern. As the first factor (P) is the smoking time which consists of P0= 0 hours, P1= 12 hours, P2= 15 hours while the second factor (H) is the storage time which consists of H0= 0 days, H1=7 days, H2= 14 days, H3= 21 days, and H4= 28 days. The variables observed were egg weight, albumen and yolk pH, moisture content, protein, and total microbial colony of smoked salted eggs. The results of the study were that the smoking time of 15 hours resulted in the lowest weight of smoked salted eggs (56.13g), while the storage time decreased the pH of albumen. Smoked salted duck eggs have a moisture content of 58.435-67.149%. The length of smoking increases the protein level. Salted duck eggs with a smoking time of 15 hours have the highest protein content, which is 15.39%. however, the duration of smoking and storage did not affect the total microbes of smoked salted eggs and there was no interaction between the duration of smoking and the duration of storage on the physical, chemical and total microbial properties.

This study comprehensively evaluates the quality of biomass briquettes produced from blends of coconut shell charcoal and sengon sawdust, using both carbonized and non-carbonized materials. Composite briquettes were fabricated with varying compositions and characterized through proximate analysis, calorific value, density, and burning rate measurements to determine their suitability as solid fuel. The results indicate that adding non-carbonized sawdust increases volatile matter content and burning rate but reduces the calorific value of the briquettes. In contrast, incorporating up to 10% carbonized sawdust significantly improves the calorific value to 6119.2 cal/g, approaching that of pure coconut shell charcoal (6352.2 cal/g), while maintaining a relatively high burning rate. Briquettes containing carbonized sawdust also exhibit low ash content, below 3%, and moisture content under 8%, meeting standard solid fuel quality requirements. These findings demonstrate that a strategic combination of carbonized and non-carbonized materials can produce hybrid biomass briquettes with optimized thermal performance, providing a promising, sustainable, and environmentally friendly alternative fuel for domestic and industrial applications.

Belawa Village, located in Lemahabang District, Cirebon Regency, West Java, is famous for the Labi-labi Belawa tourist attraction. This study aims to develop a sustainable tourism village at the Cikuya Tourist Attraction in Belawa Village. This model is expected to be an integrated solution to support the implementation of sustainable tourism. The research method used is descriptive qualitative, with quantitative data analysis. The results of the study show that the implementation of sustainable tourism in Cikuya is evident through environmental preservation and the conservation of the Belawa turtle habitat. Although the management is not yet optimal, there are practices of utilizing organic waste, such as chicken manure for animal feed and coconut shells for souvenirs, supporting the circular economy concept. Community participation in cultural activities also supports the social and cultural aspects of sustainable tourism, although it is still incidental and has not yet been programmed sustainably. However, the implementation of sustainable tourism in Cikuya is not yet fully optimal, despite having strong natural and conservation potential. Structural and operational barriers, such as accessibility, human resources, institutional governance, economy, socio-culture, and policy support, affect the effectiveness of applying sustainability principles.

The manufacturing industry in Indonesia has experienced significant growth. This increase has also impacted the demand for motorcycle spare parts. Currently, brake pads are composed of asbestos, which makes them prone to overheating and failure when reaching high friction temperatures. Therefore, an alternative brake pad material is an organic material mixed with coconut shell powder and bamboo fiber. This study aims to analyze the wear and hardness levels of motorcycle brake pads made from coconut shell powder and bamboo fiber. The study used varying ratios of coconut shell powder, bamboo fiber, and epoxy resin: 40:30:30, 35:35:30, and 30:40:30. Eighteen specimens were tested. Wear testing was performed using an Ogoshi Wear Tester, while hardness testing was performed using a Brinell hardness tester. The test results showed that the smallest wear rate on brake pads with variations of 40% coconut shell powder, 30% bamboo fiber and 30% epoxy resin was 0.001107984 mm3/kg.m. The highest hardness level was also in the variation of 40% coconut shell powder, 30% bamboo fiber and 30% epoxy resin at 63,0024 kg/. So it can be concluded that the greater the percentage of coconut shell powder and the smaller the percentage of bamboo fiber, the lower the wear rate. If the greater the percentage of coconut shell powder and the smaller the percentage of bamboo fiber, the higher the hardness level. So it can be concluded that a good brake pad variation is a variation of 40% coconut shell powder, 30% bamboo fiber and 30% epoxy resin.

The manufacturing industry in Indonesia has experienced significant growth. This increase has also impacted the demand for motorcycle spare parts. Currently, brake pads are composed of asbestos, which makes them prone to overheating and failure when reaching high friction temperatures. Therefore, an alternative brake pad material is an organic material mixed with coconut shell powder and bamboo fiber. This study aims to analyze the wear and hardness levels of motorcycle brake pads made from coconut shell powder and bamboo fiber. The study used varying ratios of coconut shell powder, bamboo fiber, and epoxy resin: 40:30:30, 35:35:30, and 30:40:30. Eighteen specimens were tested. Wear testing was performed using an Ogoshi Wear Tester, while hardness testing was performed using a Brinell hardness tester. The test results showed that the smallest wear rate on brake pads with variations of 40% coconut shell powder, 30% bamboo fiber and 30% epoxy resin was 0.001107984 mm3/kg.m. The highest hardness level was also in the variation of 40% coconut shell powder, 30% bamboo fiber and 30% epoxy resin at 63,0024 kg/. So it can be concluded that the greater the percentage of coconut shell powder and the smaller the percentage of bamboo fiber, the lower the wear rate. If the greater the percentage of coconut shell powder and the smaller the percentage of bamboo fiber, the higher the hardness level. So it can be concluded that a good brake pad variation is a variation of 40% coconut shell powder, 30% bamboo fiber and 30% epoxy resin.

This research aims to design a closed fish smoking device using coconut fiber as an energy source to smoke cursed fish or snakehead fish, which is different from traditional smoking equipment. This research was carried out in the tool making stage and the tool testing stage. This fish smoking tool modification is designed from an iron, aluminum frame and stainless steel rack. The open process of smoking fish at home has disadvantages such as unknown temperature and smoke, resulting in uneven maturity levels and longer smoking times. The research method was carried out by making tools and testing the tools. The time required for the process of smoking fish using this modified tool is around 50 to 60 minutes with the fuel amount being 2 kg of coconut husks and coconut shells with 150 ml of kerosene. This smoking tool is more efficient in carrying out smoking because the smoke is trapped in the drum tube, there is only one chimney so that the smoke is more easily absorbed by the fish and has a more distinctive characteristic in smoking.

This research optimises the production of quality charcoal briquettes using the Multi Factor Evaluation Process (MFEP) method to meet the need for sustainable alternative energy. The main raw material is coconut shells, which are cleaned, burned in iron drums, and sun-dried to produce quality charcoal. Quality evaluation was conducted on calorific value, moisture content, ash content, and compressive resistance. Findings showed significant improvement in the quality of briquetted charcoal after the application of MFEP, with higher calorific value, lower moisture and ash content, and better compressive resistance. This research supports energy efficiency, reduces emissions, and improves environmental sustainability and community welfare.

 This research aims to analyze the effect of storage duration on the quality of flying fish soaked in coconut shell liquid smoke. The main focus of the research includes testing water and phenol content, as well as evaluating the resistance of liquid smoke to sensory qualities, such as taste, aroma and texture of flying fish. The research used liquid smoke with varying concentrations of 0%, 3%, 5% and 7%, with a soaking time of 30 minutes. Data analysis was carried out using SPSS version 26 with the ANOVA test method. The results showed that the addition of liquid smoke with different concentrations had a significant influence on water content, phenol content and organoleptic parameters of flying fish.    

Kuliah Kerja Nyata (KKN) or Community Service Program is a student engagement initiative designed to apply academic knowledge and skills in real-world contexts. The KKN program in Lampuyang Village, Teluk Sampit District, Central Kalimantan, conducted from July 15 to August 29, 2024, focused on converting coconut shell waste into charcoal briquettes. Lampuyang Village possesses significant potential in coconut plantation, but the waste from coconut, such as shells and husks, is often underutilized. This KKN aimed to provide a solution by training the village’s youth in making charcoal briquettes, thereby enhancing their skills and creating new, environmentally friendly business opportunities. Through a Participatory Action Research (PAR) approach, the program actively involved the community at every stage, from observation, planning, implementation, to evaluation. As a result, the program raised awareness about the economic potential of coconut waste, reduced environmental impacts from open burning, and encouraged the youth to engage in local economic development. This initiative is expected to offer long-term benefits to Lampuyang Village’s community and strengthen the role of students as agents of social change.

This article aims to determine the role of Law of the Republic of Indonesia No. 32 of 2009 concerning environmental protection and management towards the environment in Tambo'o Village which is experiencing environmental damage and pollution. This article also examines the factors that hinder the implementation of environmental pollution sanctions due to coconut shell burning and the implementation of criminal sanctions for environmental pollution according to Law Number 32 of 2009. In this study, the author uses an empirical legal research method. Namely by directly observing the field to obtain data related to coconut shell burning in Tambo'o Village. This study uses a descriptive approach in analyzing the data obtained. This study was conducted with residents who were selected purposively (sampling). The results of this study indicate that the role of Law of the Republic of Indonesia No. 32 of 2009 concerning environmental protection and management towards the environment in Tambo'o Village has not run according to expectations. And the factors that hinder the implementation of sanctions are due to weak law enforcement and suboptimal law enforcement. Many complaints from residents about the condition of their environment that has been polluted by smoke produced from burning coconut shells and the perpetrators have never been sanctioned by the government because of the lack of community and government participation in reporting cases of environmental pollution around them. The resolution of the deliberation is not good and stops there.    

The potential of organic waste such as coconut husk and coconut shell charcoal as a source of organic fertilizer that can enhance plant growth and yield. With the aim of examining the effects of coconut husk and coconut shell charcoal (Cocos nucifera L) on the growth and yield of cucumber plants (Cucumis sativus L), this research utilized an experimental method by applying different doses of coconut husk and coconut shell charcoal to the cucumber plants. The results of the study indicate that the treatment with 200 grams of coconut husk and 200 grams of coconut shell charcoal (treatment A2) had the most significant impact on the growth of cucumber plants, showing a significant increase in the number of leaves, number of fruits, fruit length, and wet fruit weight compared to other treatments. The implications of this research are that the application of coconut husk and coconut shell charcoal can be an environmentally friendly alternative to enhance agricultural productivity, improve soil fertility, and serve as a basis for the development of more sustainable agricultural practices in the future.

The purpose of this study on the Role of Green Economy in Encouraging Entrepreneurial Innovation of MSME’s Selling Coconut Ice is to find out how to classify waste that can be processed into something that can be reused and waste that cannot be processed. Coconut ice sellers sometimes do not know how coconut waste can be processed into something that has economic value. Therefore, coconut ice sellers only sell coconut to be made into coconut ice with various variants by providing innovative flavors other than original such as palm sugar flavors, or using flavored syrups. With so many coconut ice sellers today, there is a large amount of coconut waste generated every day. Materials that sometimes cause waste in MSME entrepreneurs selling coconut ice are waste that is not used or discarded such as coconut shells, coconut fibers, syrup bottles, milk cans, and plastic (other waste). This is a problem for traders who have difficulty distributing waste so that it can be processed into something that can be used or useful and has economic value for waste that is reprocessed. To emphasize the environmentally friendly aspects of coconut waste and can increase the attractiveness for consumers to care about their environment regarding the waste. So from the conclusion of this research can emphasize, how important the green economy is in encouraging innovation regarding entrepreneurship in MSME’s for coconut ice sellers.

The main objective of the community service activity is to provide the partners skills on coconut waste processing technology to transform coconut waste into products with economic value. Through this transfer of technology activity, it is expected that new entrepreneurs will emerge. In addition, it is hoped that the targeted partners will be able to transfer their newly-gained skills to the neighboring communities, particularly to the Family Welfare Program (PKK) members and coconut farmer groups in Kohod village, Pakuhaji sub-district. The approaches utilized to solve the existing problems are transfer of technology method (science and technology) and entrepreneurship to generate value-added products. The activities of the Community Service Program are divided into three stages: preparation, implementation, and monitoring. The outputs of this activity are nata de coco, briquettes, and liquid smoke. All participants could follow the activities well. They were very inquisitive about the materials shown by the presenters. Follow-up activities were conducted after the participants partially implemented the knowledge presented by the Community Service Team. The purpose of the follow-up activities is to study the impact of this community service activity. As a follow-up, the participants were required to demonstrate the production process of nata de coco, liquid smoke, and briquettes from coconut shells. It is to ensure that the participants understand each stage in the waste processing of the products. Through the evaluation, it is found that in relation to coconut processing, the participants have shown improvement in their knowledge and skills. They have also realized that there are opportunities to increase their income. Around 85% of the participants responded positively to the knowledge and skills instilled by the Community Service Team.Keywords : nata de coco, liquid smoke, briquettes, coconut shells

This study aims to find sirompak music as a traditional Minangkabau music performance that uses gasian tangkorak as inspiration for making works. characteristic and gives rise to cobs/sirompak as the inspiration for saluang music. This type of research is qualitative with descriptive method. The research instrument is the researcher himself and is assisted by supporting instruments such as stationery and cameras. Data collection techniques were carried out by literature study, observation, interviews and documentation. Data analysis techniques are carried out by collecting data, describing data and concluding data. Based on the results of the study, it was shown that the traditional sirompak art which contained magical elements was still displayed in public places and with the same intent and purpose during the Animist era, it would cause disunity against families or neighbors, because of their intentions. and sirompak's aim was not good at that time. . After turning into a traditional art, there are elements of lyrical music and dance in this sirompak art, and the role of gasiang skulls in sirompak music is very influential in it because the hallmark of sirompak music itself is a top made of a human head skeleton. , but now the top has been replaced with the top made of coconut shells which are shaped in such a way as to be similar to the original.

The use of biomass as a renewable source for the development of bioenergy and biomaterials can also address the increasing needs of the community. Biomass is a more environmentally friendly alternative to oil and coal, which can replace non-renewable fuels. Biomass raw material with a high calorific value, is usually used as a mixing base or the main raw material in the manufacture of biobriquettes. The characteristics of briquettes made from coconut shell charcoal with starch adhesive are varied in dimensions and particle size of the charcoal. One of the adhesives that can be used to glue charcoal particles together to get compact briquettes is starch. This study aims to determine the effect of variations in the dimensions of charcoal and particle size used on the characteristics of briquettes made from coconut shell with starch adhesive. The method used was an experiment with Completely Randomized Design (CRD) testing three repetitions. The independent variables in this study were dimensional variations, namely cubes and pyramids, as well as variations in particle size using mesh 60, 80, and 100. The dependent variables in this study were the values of moisture content, ash content, destruction index, and heating value. From the results of testing a completely randomized design using ANOVA, it was found that the dimensions of the briquettes affected the ash content and flammability of the briquettes, while the particle size affected the moisture content, ash content, and flammability of the briquettes. Both dimensions and particle size have no effect on the briquette destruction index    

Minyak jelantah merupakan minyak yang dipakai secara berulang-ulang. Seringnya pemakaian minyak jelantah menyebabkan penurunan kualitas minyak seperti warna menjadi coklat dan timbulnya bau menyengat atau tengik yang berpotensi membahayakan kesehatan tubuh. Tujuan dari penelitian ini adalah mengidentifikasi potensi penambahan adsorben tempurung kelapa (Cocos nucifera) terhadap regenerasi minyak jelantah. Hasil penelitian ini didapatkan bahwa adsorben tempurung kelapa setelah dilakukan pengarangan dan aktivasi dapat meregenerasi minyak jelantah yang ditinjau dari berubahnya warna pada minyak jelantah yaitu menjadi lebih cerah atau kuning dan penurunan kadar asam lemak bebas atau FFA menurun hingga 75,73% dari kadar FFA minyak jelantah awal 1,03% menjadi 0,25%.

Along with the growing public awareness of personal and environmental health, lipa sabbe products with natural colors are increasingly popular. Natural dyes are advantageous because they do not need to be imported, are safe for human health during the manufacturing process, do not pollute the environment, and are safe. Although synthetic dyes are easier to use, they are harmful to health, produce hazardous waste, pollute the environment, and are made from imported materials. This study aims to determine the types of plants that can be used as natural dyes for lipa sabbe. Qualitative methods with literature studies sourced from journals, books, or other related scientific articles are used in this research. The results showed that natural dyes in lipa sabbe became one of the Science Learning Resources with natural dyes including extracts from cocoa shell waste, coconut fiber waste, oil palm shell waste, rambutan peel waste, mangosteen peel waste, guava leaf waste, mango leaf waste and avocado leaf waste is plantation waste that can be used as a natural lipa sabbe dye. The pigments in this material produce yellow, reddish brown, gray, and black colors.   Keywords: , ,.