Characterization of Prototype Formulated Particleboards from Agroindustrial Lignocellulose Biomass Bonded with Chemically Modified Cassava Peel Starch

Kariuki, Stephen Warui; Wachira, Jackson Muthengia; Kawira, Millien; Leonard, Genson Murithi

doi:10.1155/2019/1615629

Cited by 11 publications

(6 citation statements)

References 66 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The works of other authors show that the performance properties of the boards created with starch binding material, especially the bending strength, can differ several times [17][18][19][20][32][33][34]. This is largely due to the density of the panels.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Development of High Strength Particleboards from Hemp Shives and Corn Starch

Rimkienė,

Vėjelis,

Kremensas

et al. 2023

Materials

View full text Add to dashboard Cite

In the current study, high-strength boards for the construction industry were developed from renewable natural resources, fibrous hemp shives, and corn starch. During the research, the influence of the composition of the mixture, the processing of raw materials, and technological parameters on the operational properties of the board were evaluated. The influence of the binding material and the water content on the properties of the molded boards was evaluated. It was established that the rational amount of starch is 15% of the mass of the shives, and the amount of water is 10%. It has been established that with the proper selection of the forming parameters of the board, it is possible to avoid internal disintegration of the structure due to the water vapor pressure, increase the bending strength, and ensure uniform sintering of the board throughout the entire volume. It was found that additional processing of hemp shives can increase bending strength by more than 40%. Furthermore, during the processing of shives by chemical means, soluble substances are washed out, which reduces the density and thermal conductivity of the shives. Selection of a rational level of compression allowed us to increase the bending strength of the boards by 40%. The assessment of all factors made it possible to obtain boards with a bending strength of 40 MPa. The additives used made it possible to reduce the water absorption of the boards up to 16 times and obtain non-flammable boards. The thermal conductivity of the resulting boards varied from 0.07 to 0.095 W/(m·K). The analysis of macrostructure and microstructure allowed us to evaluate the process of the formation of bonds between hemp shives.

show abstract

Section: Resultsmentioning

confidence: 99%

“…This is largely due to the density of the panels. In different research works [18,34,35], the density of boards usually ranges from 300 to 800 kg/m 3 . In our work, it was established that when the density is increased by 1.5 times, the strength increases by about 50%.…”

Section: Resultsmentioning

confidence: 99%

Development of High Strength Particleboards from Hemp Shives and Corn Starch

Rimkienė,

Vėjelis,

Kremensas

et al. 2023

Materials

View full text Add to dashboard Cite

show abstract

“…This enhancement can be attributed to the increased availability of active binding sites and surface area with rising CP dosage, allowing additional Cl − and TH adsorption (Zeng et al, 2020). The CP has abundant hydroxyl and carboxyl groups on its lignocellulosic structure, which can engage in ion exchange and electrostatic interactions with dissolved Cl − and Ca 2+/ Mg 2+ ions responsible for water hardness (Kariuki et al, 2019;Widiarto et al, 2019). Interestingly, TH reduction remained relatively high and constant across the dosage range.…”

Section: The Influence Of Cp Dosagementioning

confidence: 99%

Simultaneous removal of chloride and hardness from groundwater by cassava peel biosorption: Optimization and sorption studies

Nyangi

2023

Remediation Journal

View full text Add to dashboard Cite

In this study, activated carbon produced from cassava peel (CP) via carbonization at 400°C was utilized as a biosorbent for the removal of chloride (Cl−) and total hardness (TH) from groundwater. A response surface methodology (RSM) employing a Box–Behnken design (BBD) was implemented to optimize process parameters, including pH (3–10), biosorbent dosage (1–10 g), contact time (10–60 min), initial Cl− concentration (50–2000 mg/L), and initial TH concentration (40–900 mg/L). The biosorbent was applied in a batch reactor setup to evaluate its performance in removing Cl− and TH from groundwater under the optimized conditions. The experimental data showed good agreement with the model predictions, exhibiting R2 of 0.991 and 0.905 for Cl− and TH removal, respectively. The CP biosorbent removed Cl− (245 mg/L) and TH (321 mg/L) by 84% and 90%, respectively, under optimal conditions of 6.9 g CP dose, 19.6 min, and initial pH of 8.1. The sorption kinetics followed a pseudo‐second‐order, and the equilibrium data fit the Freundlich and Langmuir models to Cl− and TH, respectively. The removal of Cl− and TH exhibited maximum adsorption capacities (qm) of 31.25 and 6.57 mg/g for Cl− and TH, respectively. Overall, CP shows potential as an adsorbent for remediating groundwater containing Cl− and TH.

show abstract

“…e fabricated turbine was a direct drive turbine with a singlestage blade wheel system as shown in Figure 1. e turbine blades were synthesized from rice husks and cassava adhesive particle board which were encapsulated with 2 mm aluminium casing [19]. e particle boards were synthesized in a study on synthesis of particle boards without use of harmful formaldehyde chemical [20].…”

Section: Turbine Fabricationmentioning

confidence: 99%

Prototype Steam Turbine for Solar Power Production

Kawira

2020

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

Fabrication of a prototype direct drive steam turbine using locally available materials provides a means to supply power and process heat for off-grid areas, which are not accessible due to rugged terrain. The use of solar power technologies to provide clean power and heat will mitigate environmental pollution and global warming that are caused by combustion of fossil fuels and other carbon-based power sources. The energy density of fossil fuels is higher than that of nonconcentrated solar power, which makes them a better option compared to nonconcentrated solar power sources. The high cost of steam thermal turbines and the limited technical skills on utilization of local materials for steam turbine construction have hampered the realization of potential of producing both small- and large-scale power in Africa. The design of the single-stage blade wheel system solar thermal turbine was done using AutoCAD 2010. The blades were made from encapsulated rice husk particle boards, and the steam casing was made from 0.0015 galvanized black iron sheet. Compensation for more stages was done by sending the fluid exiting from the turbine into the solar collector for reheating. It was coupled to a single-phase generator and gearbox. The rotor was made of galvanized iron tube. The turbine’s average efficiency was obtained as 61.6% and average isentropic efficiency was 55.3%. The combined gearbox and generator approximate efficiency was 54.7%. Locally available heat transfer fluids were used for solar thermal collection. The prototype turbine was designed to produce 500 W of power. It had a heat rate ratio of 0.08. The turbine inlet conditions were as follows: average temperature of 112.8°C, average pressure of 2.7 × 105 Nm−2, average enthalpy of 3156 kJ/kg, and average steam flow rate of 243.3 kg/hr. Outlet conditions were as follows: outlet average temperature of 97.3°C, average steam flow rate of 102.0 kg/hr, average pressure of 1.20 × 105 Nm−2, and enthalpy of 2103 kJ/kg. With use of 6 M sodium chloride solution, the turbine inlet conditions were as follows: enthalpy of 3789.1 kJ/kg at a pressure of 3.0 × 105 Nm−2 and its enthalpy at exit was 2346.3 kJ/kg at a pressure of 1.05 × 105 m−2 which can provide process heat and power for off-grid areas.

show abstract

Characterization of Prototype Formulated Particleboards from Agroindustrial Lignocellulose Biomass Bonded with Chemically Modified Cassava Peel Starch

Cited by 11 publications

References 66 publications

Development of High Strength Particleboards from Hemp Shives and Corn Starch

Development of High Strength Particleboards from Hemp Shives and Corn Starch

Simultaneous removal of chloride and hardness from groundwater by cassava peel biosorption: Optimization and sorption studies

Prototype Steam Turbine for Solar Power Production

Contact Info

Product

Resources

About