A Preliminary Conceptual Design Approach of Food Waste Composter Design

To make morphological matrix based conceptual design more efficient, a systematic procedure which enables complete extraction of the feasible solution variants (concepts) is developed. The approach entails: functional decomposition, generation of alternative solution principles for each subfunction, formation of combinatorial solution variants chains, and 3D space matrix and multiobjective concept optimisation-based concept screening. The approach was tested using the conceptual design of river cleaning machine. 625 theoretical concepts are obtained from the morphological matrix. The concepts are screened to 114 feasible concepts and optimised to obtain a preliminary design concept. Consequently, the concept selected for the river cleaning machine is outstanding based on efficiency, manufacturability, repairability and cost.

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

An Approach to Solution Variants Screening in Morphological Matrix based Conceptual Design

Balogun¹,

Jalil²,

Taib³

2022

“…Pre-treatment of selected feedstock materials done by heat treatment method which is drying process. Drying feedstock material by oven at temperature 40 ⁰C within 1x24 hours 19,20) . These was done to reduce the water content inside feedstock material.…”

Section: Methodsmentioning

confidence: 99%

Effect of Ratio Composition and Particle Size to Pelletizing Combination Performance of MSW and Biomass Feedstocks

Siregar¹,

Nursani²,

Wiyono³

et al. 2021

The purpose of this study is to analyze the effect of ratio composition and particle size on pelletization of various feedstocks. The feedstock materials were used leaves, wood, junk waste, shells of coconut and combination of any kind of pure feedstock materials with composition ratio 75:25, 50:50 and 25:75. The feedstocks with highest calorific value crushed and filtered using variation of mesh (20,40,60,80,100 and 120mesh) before pressing in mold dies diameter 6.5mm using multiple pellet press at 70kg/cm 2 . The results showed that combination with wood results higher calorific value of feedstock, and larger particle size impact lower durability and lower density.

“…In anaerobic digestion whereas the process with the absence or limited supply of oxygen 13) , hydrogen is produced as a side-product in the acidogenic step but in a low yield. Dark fermentation was used to increase hydrogen production, although the implementation in commercial scale was still challenging 14).…”

Section: Introductionmentioning

confidence: 99%

Development of Bio-CSTR Design For Bio-H2 From POME As Renewable Fuel

Finalis¹,

Prasetyo²,

Rahmawati³

et al. 2022

Along with population growth and its activities, in business-as-usual approach, the energy needs to support these activities will be even greater. Up to this point, the fulfillment of energy sources is still dominated by fossil fuels. Therefore, innovation and technology development explore all potentials related to, especially, renewable fuel. Hydrogen (H2) is a potential energy carrier with an energy content 2.75 times higher energy than hydrocarbon fuels. Previous research using Palm Oil Mill Effluent (POME) as a raw material has been carried out on 2.5 dm3 and 40 dm3 scales. Based on these results, a scaling-up system was designed as a bio-Continuous Stirred Tank Reactor (CSTR) for the production of H2 from a capacity of 900 dm3 by modifying the existing reactor. The bio H2 production system was designed by considering the feed stream will flow from the bottom and stream up through high concentration activated sludge which will decompose the organic content in POME. POME flow up and out through the overflow pipe. Meanwhile, the biogas, H2 and CO2, will flow through the upper pipe and be channeled to the biogas holder. POME feeding is designed to inflow up laminar so that POME decomposition occurs gradually as indicated by the decreasing COD and BOD values at the bottom and overflow. The difference in COD and BOD concentrations in the bio-CSTR shows a positive effect on the 1 m 3 bio-CSTR. The bio CSTR was equipped with impellers in 4 different levels to maintain uniformity at each level. Thus the form of POME flow is laminar and non stagnant. The result showed COD decreased between the bottom and the overflow reached 5280 ppm. In addition, the pH only changes to a maximum of 0.1. Both data indicated that biological processes working well and do not influence the operational condition Novelty: This bio CSTR design for biogas H2 production is a modification of an existing bio H2 production system that uses POME as raw material and has a working volume of around 1 m3 (1000 liters). The previous system mixed with the bottom functioning on top by using circulation in the bioreactor. There hasn't been any decent data on H2 biogas production until recently. Modification of the H2 biogas production system is carried out by adding a stirring system that works in a laminar flow -non stagnant. Another added feature is the heating system for pretreatment, which can be used both for conditioning the seeding culture consortium biogas H2 and for the preparation of feeding into bio-CSTR. A diaphragm pump that can work for sludge is also included in the system. Currently, research on the maximum H2 biogas production is being carried out on a 2.5 liter scale 1). Novelty in this research is to design a bio CSTR on a scale of 1 m 3 which can also be utilized to produce H2 biogas from POME.