Wyniki wyszukiwania - BazTech

Ograniczanie wyników

2 Journal of Ecological Engineering

2 2023

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

Optimization of Particle Size and Ramie Fiber Ratio on Hybrid Bio Panel Production from Oil Palm Trunk as Thermal Insulation Materials

Mawardi Indra, Nurdin, Fakhriza, Rizal Samsul, Aprilia Sri, Faisal Muhammad, Jaya Ramadhansyah Putra

Journal of Ecological Engineering

2023

Vol. 24, nr 2

39--49

The abundant availability of waste oil palm trunks is one of the potential fibers for new thermal insulation materials. While focusing on the manufacturing of thermal insulation materials, the main points to be considered are particle size, reinforcement fiber ratio, and press durations, besides binders type and temperature. This study aimed to optimize the manufacturing process of hybrid bio panels based on oil palm trunks as thermal insulation material. The response surface methodology (RSM), with a Box-Behnken Design (BBD), was used to model and optimize the manufacturing process variables. A total of 17 hybrid bio panels were in operation and the independent variables used were particle size, ramie ratio, and press duration. The dependent variables were water absorption, thickness swelling, MOR, and thermal conductivity. The hybrid bio panel obtained under the optimum conditions was characterized by thermogravimetric analysis to observe thermal stability. On the basis of analysis of variance and the contour plot, it was discovered that the interaction between particle size and ramie fiber ratio was a significant variable to optimize hybrid bio panel manufacture. The thermal resistance and modulus of rupture of hybrid bio panels also improved with higher particle size and ramie fiber ratio. The optimum manufacturing process was obtained at OPT particle size of 0.248 mm, ramie fiber ratio of 19.775, and press duration of 25 min. This condition produces a thermal conductivity of 0.079 W/mK, modulus of rupture of 17.702 MPa, water absorption of 54.428%, and thickness swelling of 21.974%. In addition, the hybrid bio panel resulted in thermal stability of 341 °C.

Characteristics of Hybrid Biopellet based on Oil Palm Wood and Natural Activated Charcoal as a Renewable Alternative Energy Source

Mawardi Indra, Razali Mawardi, Zuhaimi Zuhaimi, Ibrahim Akhyar, Akadir Zaini, Razak Hanif, Nurlaili Nurlaili, Ginting Ariefin, Ismy Adi Saputra, Syarif Jenne

Journal of Ecological Engineering

2023

Vol. 24, nr 9

80--91

Oil palm wood is biomass waste with a high abundance of energy which has the potential to be used as a raw material in the production of biopellet as an alternative energy source. However, oil palm wood possesses low density and calorific value. This study aims to evaluate the characteristics of biopellet formed through the hybridization of oil palm wood and natural activated charcoal. The natural activated charcoal filler was made from coconut shell and tapioca starch was used as a binder at a ratio of 150 g. Hybrid biopellet were produced using a roller wood machine with varying amounts of natural activated charcoal content: 200 g, 300 g, and 400 g per kg of raw material. The quality of the hybrid biopellet was evaluated based on the SNI 8021-2014 standards, including density, moisture content, ash content, volatile matters, fixed carbon, and calorific value. The results show that the hybridization of natural activated charcoal significantly influences the quality of the biopellets. Overall, the characteristics of the hybrid biopellet have met the SNI 8021-2014 standards, except for the ash content. The HBC-400 hybrid biopellet type exhibited the highest quality, with a density of 0.886 g/cm3, moisture content of 7.33%, ash content of 2.22%, fixed carbon of 62.12%, and calorific value of 4822 Cal/g. Oil palm wood and natural activated charcoal-based hybrid biopellet have the potential to be used as a renewable alternative energy source.