Factors Affecting Carbonation Depth in Foamed Concrete Bricks for Accelerate CO2 Sequestration

Alshalif, Abdullah Faisal; Irwan, J. M.; Tajarudin, Husnul Azan; Othman, Norzila; Al-Gheethi, Adel; Shamsudin, Shazarel; Altowayti, Wahid Ali Hamood; Sabah, Saddam Abo

doi:10.3390/su131910999

Cited by 8 publications

(3 citation statements)

References 38 publications

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“…Three-Dimensional Surface and Contour Plots for Mn, Fe, and Zn Removal The Design Expert 13 software (version 13) was used to create three-dimensional (3D) surface response and contour plots in order to analyze the interaction correlations between independent factors and certain models' responses. The response surface models created to predict the removal of Mn, Fe, and Zn were considered reasonable in light of the findings [72].…”

Section: Removal Of Mn Fe and Zn Under Optimum Conditionsmentioning

confidence: 99%

Experimental and Modeling Study on the Removal of Mn, Fe, and Zn from Fiberboard Industrial Wastewater Using Modified Activated Carbon

et al. 2023

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In this work, the use of agricultural waste from oil palm petioles (OPP) as a raw material for the production of activated carbon (AC) and its characterization were examined. By soaking these chars in nitric acid (HNO3) and potassium hydroxide (KOH) at a 10% concentration, AC with favorable high-porosity carbons was generated. To maximize AC synthesis, the AC was pyrolyzed at 460, 480, and 500 °C temperatures for 20 min. Based on micrographs of formed pores and surface functional groups, 480 °C carbonization temperature on both chemical HNO3 and KOH was shown to be the best. The FTIR measurements reveal that chemical activation successfully transformed the raw material into AC. Moreover, FESEM micrographs show the pores and cavities of the prepared AC achieve a high surface area. This is further supported by BET results of HNO3 OPP AC and KOH OPP AC with surface areas of 883.3 and 372.4 m2/g, respectively, compared with the surface area of raw OPP of 0.58 m2/g. Furthermore, the tests were revealed by an optimization model, namely response surface methodology (RSM), using a central composite design (CCD) technique. The findings showed that all three parameters (pH, time, and dose) had a substantial impact on the removal of Zn, Fe, and Mn. Analysis of variance (ANOVA) and analytical error indicated that the models were accurate, with a low error value and a high R2 > 0.9. Remarkably, the good correlation between actual and predicted removal values showed that the modified activated carbon is a promising adsorbent for heavy metal removal from wastewater.

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Section: Removal Of Mn Fe and Zn Under Optimum Conditionsmentioning

confidence: 99%

Experimental and Modeling Study on the Removal of Mn, Fe, and Zn from Fiberboard Industrial Wastewater Using Modified Activated Carbon

et al. 2023

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“…Additional significant factors include the presence of CO2 gas in the atmosphere, temperature, water to cement ratio (w/c), composition of binder, degree of hydration over time, and relative humidity [15]. In contemporary times, the utilization of bacteria and microorganisms has been prevalent in expediting the carbonation process and enhancing the penetration acceleration procedure in concrete [16] [17]. The rate of carbonation acceleration in bio-concrete is contingent upon the enzymatic activity of bacteria, namely their production of urease and carbonic anhydrase enzymes, as well as their capacity for self-healing the pores inside the concrete [16] [18].…”

Section: Introductionmentioning

confidence: 99%

The use of coffee waste in bio-foamed concrete brick (B-FCB) to reduce the penetration of carbon dioxide (CO₂) into concrete

Alshalif,

Azril,

Irwan

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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The aim of this study was to examine the potential of coffee waste (CW) in reducing the carbonation of bio-foamed concrete brick (B-FCB). This study utilised coffee waste (CW) as an alternative material to replace cement, with different concentrations of 1%, 5%, and 10%. Furthermore, the utilisation of Bacillus tequilensis (B. tequilensis) was employed with the objective of achieving self-healing. A 2k factorial design was employed to perform a statistical analysis aiming to optimise the carbonation depth of B-FCB incorporating CW for a duration of 28 days. The experiment consisted of 11 runs. The performance of carbonation depth as response of this study was monitored with three main factors namely the density of concrete (D), coffee waste (CW), and B. tequilensis (B), respectively. The factors were bounded by upper and lower limits of 1300 kg/m3 and 1800 kg/m3, 1% and 10%, and 3x105 cell/ml and 3x107 cell/ml, respectively. The study established that the ideal carbonation depth was 8 mm, based on specific conditions as follow; 1300 kg/m3 of concrete D, 1% of CW and 3×105 cell/ml of B at 28 days. On the other hand, it was observed that the carbonation depth had a value of zero when the cement was replaced with 10% CW in runs 5, 6, 7, and 8. The empirical findings illustrate the effects of (CW) on reducing the level of carbonation in B-FCB, hence promoting its long-term sustainability.

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“…et al studied the relationship between foamed concrete density and compressive strength [16]. Abdullah Faisal Alshalif et al studied the effect of density and curing conditions on CO 2 isolation in foamed concrete brick, and the effect of bacterial self-healing and CO 2 bio-sealing on the strength of bio foamed concrete brick [17,18]. Yang S. et al studied the preparation and properties of low-density foamed concrete [19].…”

Section: Introductionmentioning

confidence: 99%

Effect of Maintenance and Water–Cement Ratio on Foamed Concrete Shrinkage Cracking

Shen

et al. 2022

Polymers

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This is a study on how to reduce shrinkage and improve crack resistance of foamed concrete. By selecting different curing temperatures and humidity, six different curing conditions were analyzed. The shrinkage deformation and maximum crack width of foamed concrete blocks with water–cement ratios of 0.4 and 0.5, under six curing conditions, were measured by a comparator and optical microscope, and the cracking time was recorded. The effects of curing temperature, humidity and water–cement ratio on the shrinkage and crack resistance of the foamed concrete were analyzed by comparing the experimental results of each group. We studied the primary and secondary order of the three factors affecting the drying shrinkage of foamed concrete. The results show that: temperature is the primary factor that changes the drying shrinkage performance of foamed concrete, followed by the water–cement ratio, and finally humidity. The interaction of these three factors is not obvious. The shrinkage of foamed concrete increases with the increase in temperature; increasing the humidity of curing can control the water loss rate of foamed concrete and reduce shrinkage. Lower humidity and higher temperature will make cracks appear earlier; with an increase in the water–cement ratio, the initial cracking time is shortened and the cracking property of foamed concrete is improved.

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Factors Affecting Carbonation Depth in Foamed Concrete Bricks for Accelerate CO2 Sequestration

Cited by 8 publications

References 38 publications

Experimental and Modeling Study on the Removal of Mn, Fe, and Zn from Fiberboard Industrial Wastewater Using Modified Activated Carbon

Experimental and Modeling Study on the Removal of Mn, Fe, and Zn from Fiberboard Industrial Wastewater Using Modified Activated Carbon

The use of coffee waste in bio-foamed concrete brick (B-FCB) to reduce the penetration of carbon dioxide (CO₂) into concrete

Effect of Maintenance and Water–Cement Ratio on Foamed Concrete Shrinkage Cracking

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Factors Affecting Carbonation Depth in Foamed Concrete Bricks for Accelerate CO2 Sequestration

Cited by 8 publications

References 38 publications

Experimental and Modeling Study on the Removal of Mn, Fe, and Zn from Fiberboard Industrial Wastewater Using Modified Activated Carbon

Experimental and Modeling Study on the Removal of Mn, Fe, and Zn from Fiberboard Industrial Wastewater Using Modified Activated Carbon

The use of coffee waste in bio-foamed concrete brick (B-FCB) to reduce the penetration of carbon dioxide (CO2) into concrete

Effect of Maintenance and Water–Cement Ratio on Foamed Concrete Shrinkage Cracking

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Product

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The use of coffee waste in bio-foamed concrete brick (B-FCB) to reduce the penetration of carbon dioxide (CO₂) into concrete