Rancang Bangun Solar Dryer untuk Meningkatkan Kualitas Refuse Derived Fuels (RDF) sebagai Bahan Bakar Alternatif di Kiln Burner Industri Semen

To utilize the municipal solid waste (MSW), PT Semen Indonesia has a program to convert waste into three useful products. One of the product is named Refuse Derived Fuel (RDF). The RDF has claimed that it had a caloric value about 5178 kcal/kg. However, currently, RDF could not be used for the combustion process in the cement kiln since RDF has higher moisture content and lower caloric value. In this research, a solar dryer with greenhouse type is designed to reduce the moisture content. The performance is tested using two variations and compared to the conventional method. The variations are a solar dryer with one fan and with no fan. The general results show that variation with one fan has the highest drying rate among all. There is a significant reduction of moisture content after drying process using a solar dryer. The moisture content could be reduced to 16.25 % and 17 % using one fan and no fan, respectively. Furthermore, variation with 1 fan has higher solar dryer efficiency than that of one fan

PENDAMPINGAN PENGEMBANGAN USAHA UMKM MR UDANGKU DESA LUMPUR, GRESIK

Kegiatan pengabdian masyarakat merupakan salah satu bentuk kontribusi dari lembaga pendidikan dan tenaga akademik untuk memberikan manfaat langsung kepada masyarakat. Universitas Internasional Semen Indonesia (UISI) melalui program studi Manajemen Rekayasa telah melaksanakan kegiatan pengabdian masyarakat yang bertujuan untuk membantu pengembangan usaha UMKM MR Udangku di Kelurahan Lumpur, Gresik. Pengembangan atau inovasi terhadap suatu produk telah dilakukan pada pengmas sebelumnya dan menghasilkan inovasi olahan udang sebagai hasil tangkapan hasil laut terbesar di Kelurahan Lumpur. Produksi telah rutin dilakukan hingga terbentuk UMKM UdangKu. Dengan pemasaran yang dilakukan secara langsung dan juga melalui e-commerce. Namun, terdapat berbagai aspek yang perlu diperhatikan dalam pengembangan produk untuk meningkatkan kualitas, daya saing, dan keberlanjutan usaha. Metode yang digunakan pada pengembangan usaha UMKM MR Udangku yaitu HoQ (House of Quality) untuk Identifikasi Kualitas Produk, Pareto dan Fishbone Diagram untuk menguji Kualitas Produk, Pengembangan Izin Usaha untuk (NIB dan Halal) serta Manajemen Keuangan untuk menghitung HPP (Harga Pokok Penjualan). Hasil dari pendampingan pengembangan usaha ini adalah mengetahui peluang bisnis yang bisa dikembang, melakukan evaluasi dan peningkatan kualitas produk, mendapatkan NIB dan Sertifikasi Halal serta mengetahui HPP produk nugget udang

Prediction of recovery energy from ultimate analysis of waste generation in Depok City, Indonesia

Refuse derived fuel (RDF) is an environmentally friendly renewable fuel developed to reduce waste generation. RDF can consist of various kinds of waste such as paper and gardens. One of the critical parameters is the chemical element and calorific value. The purpose of this study was to determine the potential for waste reduction and the relationship of ultimate longevity in RDF to the calorific value. This study's paper and garden waste mixture were P0 (100% paper), P25 (75% paper and 25% garden), P50 (50% paper and 50% garden), P75 (25% paper and 75% garden), and P100 (100% garden). The calorific value of the mixture can reach 3.6-5.2 kWh/kg. Simultaneously the relationship of ultimate elements nitrogen (N), hydrogen (H), oxygen (O), and ash affects the heating value of RDF. Sampling the application in Depok City can reduce waste by 6.67%, with the potential for electrical energy from paper and garden wastes of 358,903.8 kWh and 48,681 kWh, respectively. This shows that this energy waste can supply 0.1% of the total daily electricity demand in Depok City

PENGEMBANGAN PRODUK HASIL TANGKAPAN PADA KELOMPOK ISTRI NELAYAN DESA LUMPUR, GRESIK

Lumpur Village, Gersik, is a coastal area that has a huge potential for marine products, and most of the population works as fishermen. Marine products are usually sold directly to middlemen, and only a small portion was processed. On the other hand, fishermen's wives could improve their economies by helping to process marine products and increase their value. Thus, the development of marine products needs to be carried out. The methods used to obtain suitable products are interviews, observation, market research, and financial feasibility analysis. Based on interviews and observations, Lumpur Village, Gresik has 25 kg/day of shrimp potential. Based on market research, the processed shrimp preferred by 32% of respondents are nuggets. The Shrimp nuggets business run by fishermen's wives will be using sales methods both direct and online. The financial feasibility analysis shows that the Net Present Value is positive, and the Payback Period is less than the project duration; hence, this business is feasible

Characteristics of Woody Cutting Waste Briquette with Paper Waste Pulp as Binder

The current research aimed to increase the calorific value of woody cutting waste briquette with paper waste pulp as binder. There were three different binder variation used in this study, they are 5 %, 10 %, and 15 %. To create a briquette, a cylindrical iron mold with diameter of 3.5 cm and height of 3 cm and a hydraulic press with 2 t power were applied. The physical characteristics of the combination woody waste briquette and paper waste pulp, such as moisture content, ash content, volatile matter and carbon fix were examined using proximate analysis. The calorific value of briquetted fuel was tested by bomb calorimeter. The combustion test was performed to determine the combustion characteristic of briquettes, for example initial ignition time, temperature distribution, and combustion process duration. The general result shows that the calorific value of briquette stood in the range of 4 876 kCal kg–1 to 4 993 kCal kg–1. The maximum moisture content of briquette was 5.32 %. The longest burning time was 105 min

Municipal Solid Waste to Energy: Palletization of Paper and Garden Waste into Refuse Derived Fuel

The purpose of this research was to process a mixture of paper waste and garden waste based on material flow analysis and to analyze its parameters based on water content, ash content, heating value, along with Thermogravimetry Analysis (TGA)/Derivative Thermogravimetry (DTG). The garden waste treatment process consists of shredding, drying with a rotary dryer, separator, and then shaving with a hammer mill. Paper waste only needs a shredder process. Then, the mixing process and pelletizing of paper waste as well as garden waste are carried out according to the variation (w/w) 100% paper (K100), 75% paper (K75), 50% paper (K50), 25% paper (K25), and 100% garden waste (K0). The water content ranged from 5.8 to 15.25%. From K0 to K100 samples, the ash content increased from 4.54 to 9.85%. A correlation of 0.9047 was found from samples K0 to K100. There was a correlation between increasing calorific value along with the mixture with paper waste. The caloric value in K0 to K100 increased from 13.11 to 19.03 MJ/kg. The TGA/DTG analysis reduced mass due to water evaporation, devolatilization, and carbonization processes