Response surface statistical optimisation of zeolite-X/silica by hydrothermal synthesis

Doumit, Philip; Clark, Malcolm W.; Yee, Lachlan H; Rose, Arthur W.

doi:10.1007/s10853-019-03913-x

Cited by 7 publications

(2 citation statements)

References 42 publications

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“…The morphology of SCBA chars and an example of the EDS spectrum of analyzed points on the surface of the SCBA particles are presented in Figure 2. The morphology of the SCBA was similar to that reported in previous works for this material [8,20,59,60]. Substantial quantities of Si were detected, besides C and O on the SCBA particles' surfaces (Figure 2b).…”

Section: Scba Propertiessupporting

confidence: 84%

Adding Value to Sugarcane Bagasse Ash: Potential Integration of Biogas Scrubbing with Vinasse Anaerobic Digestion

Garcia-Perez,

Ortiz-Ulloa,

Jara-Cobos

et al. 2023

Sustainability

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One of the byproducts of sugarcane bagasse combustion in sugarcane mills is sugarcane bagasse ash (SCBA), which contains up to ~40 mass% of organic matter. Currently, SCBA is partially used as a soil fertilizer. However, SCBA’s poor content of minerals, which are required by soils, restricts its use in soils, resulting in the disposal of large amounts of SCBA in landfills. Alternatively, SCBA has shown promise for some environmental applications such as wastewater treatment, but its use in gas cleaning deserves further study. The objective of this work was to assess the use of as-received SCBA to remove hydrogen sulfide (H2S) from biogas, thus, to add value to the ash. The experimental procedure consisted of passing biogas containing H2S through a column with SCBA and monitoring the H2S content inline by employing a gas chromatograph until the concentration of H2S, measured after the column, was ~10% of the original concentration. The breakthrough time of the SCBA adsorption curve was ~75% the breakthrough time observed with activated carbon, showing that SCBA could be a cheap alternative to commercial materials that are currently used for biogas scrubbing. This result could positively impact ethanol sugarcane mills that need to clean biogas produced from vinasses, as part of a strategy to integrate biogas production and cleaning operations using low-value residues (i.e., vinasses and ash). SCBA’s capacity for removing H2S from biogas results from the presence of K-compounds (e.g., K2SiO3 and K2Si2O5) on the ash’s surface and its relatively high porosity. Additionally, S-enriched SCBA (due to H2S retention) can expectedly be more beneficial to soils than directly adding the ash since S is an essential nutrient for the growth of plants.

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Section: Scba Propertiessupporting

confidence: 84%

Adding Value to Sugarcane Bagasse Ash: Potential Integration of Biogas Scrubbing with Vinasse Anaerobic Digestion

Garcia-Perez,

Ortiz-Ulloa,

Jara-Cobos

et al. 2023

Sustainability

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“…Experimentation was performed more efficiently with the stepwise approach used for zeolite-X and mesoporous TUD-1 silica, in which compact screening designs were employed upfront for factor selection, followed by more detailed designs for modelling the remaining few significant factors. 37,38 A holistic DoE strategy could have reduced the numbers of required trials further by re-using some of the treatments from the screening study for the optimisation by concatenating both designs. Additionally, it must be noted that all DoE studies constructed the regression models with the design factor levels, which might have differed slightly from the factor levels attained during the experiments.…”

Section: Introductionmentioning

confidence: 99%

Designing bioinspired green nanosilicas using statistical and machine learning approaches

Dewulf

Chiacchia

Yeardley

et al. 2021

Mol. Syst. Des. Eng.

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Characterization of Natural Zeolite and Determination of its Ion-exchange Potential for Selected Metal Ions in Water

Wangi,

Olupot,

Byaruhanga

et al. 2023

Environ. Process.

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Response surface statistical optimisation of zeolite-X/silica by hydrothermal synthesis

Cited by 7 publications

References 42 publications

Adding Value to Sugarcane Bagasse Ash: Potential Integration of Biogas Scrubbing with Vinasse Anaerobic Digestion

Adding Value to Sugarcane Bagasse Ash: Potential Integration of Biogas Scrubbing with Vinasse Anaerobic Digestion

Designing bioinspired green nanosilicas using statistical and machine learning approaches

Characterization of Natural Zeolite and Determination of its Ion-exchange Potential for Selected Metal Ions in Water

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