In this work, biochar produced from breadfruit leaves was utilized to remove the toxic Congo red dye. XRD, FTIR, and FESEM-EDX were implemented characterize biochar. Response surface methodology (RSM) Box-Behnken design (BBD) techniques used evaluate red’s optimum adsorption efficiency. The of studied by varying dye concentrations (5–50 mg/L), times (30–240 min), pH (6–9), dosages (0.5–2 g/100 mL). X-ray diffractometer results show that structure is amorphous. exhibited unbounded OH,...

The aim of the current study is to investigate combustion, performance, and emission characteristics a diesel engine adopting graphene nanoplatelets 10% <math xmlns="http://www.w3.org/1998/Math/MathML" id="M1"> <mi>v</mi> <mo>/</mo> </math> dimethyl carbonate as fuel additives in 30% biodiesel 70% blend. novel findings are documented subsequent sections. surface modification using lipophilic surfactant was used which gave highest stability samples main distinctive this research work....

Recent studies have examined the thermal stability and reliability of TiO2 nanofluid-based heat exchangers under long-term operation in solar water heating systems. This includes assessing nanoparticle sedimentation, agglomeration, degradation over time, as well their impact on transfer performance system reliability. In this study fluid flow characteristics TiO2-DI-H2O (deionized water) nanofluid used a shell tube exchanger with different baffle angles turbulent regimes were numerically...

Biodiesel has long been recognized as a viable alternative energy source. In order to enhance the quality, and performance of biodiesel-diesel fuel blends while reducing air pollution from combustion, additives must be employed. The present research aims focus on addition SiO2 novel nanoparticles (at concentration 30, 60, 90 mg/L) in ternary (TF) blend (75% Diesel+ 15% Sea Mango Methyl Ester (SMME15) + 10% iso-Butanol volume basis) determine engine performance, emission characteristics...

Plastic waste poses a significant challenge in Africa and around the world, with its volume continuing to increase at an alarming rate. In Africa, estimated 25–33% of daily is made up plastic, posing threat environment, marine life, human health. One potential solution this problem waste-to-energy recycling, such as pyrolysis, which involves conversion materials into oil, char, non-condensable gasses through thermochemical process absence oxygen. Given abundance continent’s energy...

Abstract This study presents an investigation into the valorization of Periwinkle Shell Powder (PSP) as a sustainable and cost-effective reinforcement material in AA6061 aluminum composites. The incorporation PSP enhances microstructural, thermal, mechanical properties AA6061, demonstrating its potential for improved performance sustainability. Microstructural analysis using Scanning Electron Microscopy (SEM) Energy Dispersive Spectroscopy (EDS) confirms uniform dispersion within matrix,...

Abstract In this investigation, Jatropha methyl ester (JME) [JME 20% (volume) + diesel 80% (volume)] was used to adjust the engine’s compression ratio (CR 16, 17, 17.5, and 18) fuel injection (IT) in range of 21–25 deg. crank angle (CA) steps 2 before top dead center (BTDC), identify emission profiles engine, where standard CR IT were 17.5 23 CA BTDC. The results reveal that CO UHC obtained be as low 0.03% vol at 75% load, CR18, IT25, 5 ppm full IT25 respectively. NO x rallied from 47 no...

This review explores the integration of Circular Economy (CE) principles in manufacturing, focusing on its potential to transform industrial practices by promoting sustainability, economic adaptability, and social welfare. As manufacturers face depletion natural resources growing environmental concerns, CE presents a regenerative model that prioritizes resource efficiency, waste reduction, closed-loop systems. The study provides detailed analysis current state adoption, outlining significant...

This paper elucidates the outcome of machining factors specifically cutting velocity, feed rate and depth cut on characteristics such as surface roughness tool-work interface temperature while turning cylindrical AISI 52100 steel alloy components in dry microlubrication conditions. The experiments are designed based Taguchi's L25(53) orthogonal array conducted an All Geared Lathe, simultaneously was observed using a K-type thermocouple subsequently, mathematical model developed for values...

Abstract The objective of this study is to analyse the effect tool-work interface temperature observed during turning AISI 4340 cylindrical steel components in three machining conditions, namely flooded, near-dry and dry conditions with separate CNMG-PEF 80 0 diamond finish Titanium Nitride (TiN) coated carbide cutting tool. parameters considered are velocity, feed rate depth cut. experiments were planned based on full factorial design (3 3 ) executed an All Geared Conventional Lathe. was...

This academic research is carried out to access the general awareness, mental state and difficulties among different age groups of students studying in various schools, colleges, or Universities during this lockdown period due COVID-19 crisis western regions Uganda. An aggregate 405 participated survey. Among them 253 are from rural regions, 59 semi-urban 93 urban regions. survey classified into three sections: first section spotlights perceptive level about crisis, second emphasizes final...

The objective of this research work is to manufacture lightweight aluminium cellular structure through stir casting and infiltration technique from base metal alloy A413. In technique, along with the molten foaming agent calcium carbonate (CaCO3) mixed different compositions, thorough mixing yielded foam in case compositions sodium chloride (NaCl) particles which act as a space holder fabrication foam. Properties such density, percentage porosity, compressive strength microstructure are...

In this research work, dimple texture tubes and silicon dioxide (SiO2) nanofluid were used to analyze the performance parameters of a solar water heater. For purpose, SiO2 was mixed with deionized (DI) using an ultrasonic dispersion device prepare nanofluids (SiO2/DI-H2O). The size nanoparticle in range 10-15 nm. Different volume concentrations nanoparticles 0.1% 0.5%, steps 0.1%, chosen carry out experiments. Apart from this, computational fluid dynamics (CFD) tool numerically affecting...

This paper elucidates the effect of near dry machining (NDM) on surface quality achieved during face milling AISI 1045 steel components using conventional emulsified mineral oil cutting fluid and prepared from eco-friendly non-edible unrefined oils such as castor oil, cottonseed neem oil. work was completed in a FANUC arrangement CNC vertical centre (VMC) with three TiN coated carbide inserts 0.4 mm nose radius adjusted into cutter 25 diameter. The parameters considered this investigation...

This work is to explicate the data collected during turning of AISI 1045 alloy steel components in near dry condition with emulsified cutting fluids prepared from cooking oils such as Palm oil and Peanut oil. The base are tested for its relative density, viscosity flash point following ASTM standards. Highly influencing factors identified experiments planned arranged using Taguchi's L27(35) orthogonal array, repeated reduce errors. quality aspect machined machining interface temperature...

This paper elucidates the effect of near dry machining (NDM) on surface quality achieved during face milling AISI 1045 steel components using conventional emulsified mineral oil cutting fluid and prepared from eco-friendly non-edible unrefined oils such as castor oil, cottonseed neem oil. work was completed in a FANUC arrangement CNC vertical centre (VMC) with three TiN coated carbide inserts 0.4 mm nose radius adjusted into cutter 25 diameter. The parameters considered this investigation...

This exploration is carried out to reveal the outcome of turning factors such as cutting velocity, depth cut and feed rate on surface roughness, mean force tool-work interface temperature cylindrical 655M13 steel alloy components. The experiments are designed based (33) full factorial design conducted a centre with Titanium Aluminium Nitride (TiAlN) layered carbide tool 0.8mm nose radius, simultaneously forces force, thrust tangential observed using calibrated devices. roughness turned parts...

This research aimed to characterize GNS and PWC biomass using thermal, combustion, FTIR, SEM, EDX downdraft gasifier in order assess the suitability for gasification. The experiment showed that VM of were 67.40 wt.% 71.88 wt.%, respectively. As a result high VM, vaporized before burns faster due oxidation state than GNS. Whereas FC, MC ash contents relatively compared PWC, which lead higher char deposit during calorific values obtained ~18.87 MJ/kg ~17.04 PWC. major decomposition peaks...