Kinetics of CaCO 3 precipitation in an anaerobic digestion process integrated with silicate minerals

Salek, S.S.; Bozkurt, Özge Deniz; Turnhout, A.G. Van; Kleerebezem, Robbert; Loosdrecht, M.C.M. van

doi:10.1016/j.ecoleng.2015.10.025

Cited by 14 publications

(6 citation statements)

References 37 publications

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“…Simplified models describe the process using a single chemical reaction equation, which combines equations (1), (2), and (3) (Cuthbert et al, 2013;Hommel et al, 2015Hommel et al, , 2016. More advanced models include geochemical speciation reactions of the different solute species often by using specific geochemical speciation software packages such as PHREEQC (Charlton & Parkhurst, 2011;Parkhurst & Appelo, 2013), Orchestra (Salek et al, 2016;Ubbink, 2013), or TOUGHREACT (Barkouki et al, 2011). Some of these models included precipitation kinetics, describing the nucleation and growth rate of CaCO 3 minerals (e.g., Barkouki et al, 2011, Ebigbo et al, 2012, Qin et al, 2016.…”

Section: Introductionmentioning

confidence: 99%

Assessing the Kinetics and Pore‐Scale Characteristics of Biological Calcium Carbonate Precipitation in Porous Media using a Microfluidic Chip Experiment

Kim

Mahabadi

Jang

et al. 2020

Water Resources Research

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Biomineralization through microbially or enzymatically induced calcium carbonate precipitation (MICP/EICP) by urea hydrolysis has been widely investigated for various engineering applications. Empirical correlations relating the amount of mineral precipitation to engineering properties like strength, stiffness, or permeability show large variations, which can be partly attributed to the pore‐scale characteristics of the precipitated minerals. This study aimed to gain insight into the precipitation kinetics and pore‐scale characteristics of calcium carbonate minerals through time lapse imaging of a transparent microfluidic chip, which was flushed 10 times with a reactive solution to stimulate EICP. An image processing algorithm was developed to detect the individual precipitated minerals and separate them from the grains and trapped air. Statistical analysis was performed to quantify the number and size distribution of precipitated minerals during each treatment cycle and the cumulative volume, surface area, bulk precipitation rate, nucleation rate, and supersaturation were calculated and compared with a simple numerical model and more complex theory on precipitation kinetics. The analysis showed that results were significantly affected by the assumed particle shape. The supersaturation, which controls the crystal nucleation and growth rates, was shown to be a function of the hydrolysis rate, the kinetic order and growth rate constant, and available surface area for mineral growth. Possible explanations for observed discrepancies between observations and theory, including diffusion limitations, the presence of inhibiting compounds, local pore clogging or observation bias, and limitations of the methodology, are discussed.

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Section: Introductionmentioning

confidence: 99%

Assessing the Kinetics and Pore‐Scale Characteristics of Biological Calcium Carbonate Precipitation in Porous Media using a Microfluidic Chip Experiment

Kim

Mahabadi

Jang

et al. 2020

Water Resources Research

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“…However, the cumulative hydrogen yield by adding ZnO and CuO was found to be higher compared to the control sample due to the enhanced hydrolysis of the feedstock during the initial period of digestion. The lower pH of the feedstock along with the lower ion activity of Ca 2+ and CO 3 2− results in lower hydrogen generation by adding CaCO 3 as an additive during the hydrogen fermentation [33]. Nevertheless, an increase in hydrogen generation compared to the control sample was observed by adding CaCO 3 due to the stimulated growth of hydrogenase caused by the release of ion during the acidi cation of the feedstock.…”

Section: Effect Of the Additives On Cumulative Hydrogen Yieldmentioning

confidence: 99%

“…Also, the toxic nature of the ions was responsible for the lower volatile fatty acid generation caused by the decreased hydrolysis of protein [18]. The addition of CaCO 3 causes less ion conductivity and lower pH which results in a lower concentration of hydrogen during the acidi cation [33]. Also the reduced ion activity of Ca 2+ and CO 3 2− leads to the lower rate of reaction during the hydrolysis.…”

Section: Effect Of the Additives On Hydrogen Concentrationmentioning

confidence: 99%

Effect of Various Potential Additives on Hydrogen Fermentation During the Co-Digestion of Food Waste and Cow Dung

Deheri¹,

Acharya²

2020

Preprint

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The effect of calcium peroxide (CaO2), zinc oxide (ZnO), copper oxide (CuO), and calcium carbonate (CaCO3) as additives during the anaerobic co-digestion of food waste and cow dung is experimentally investigated to enhance the hydrogen fermentation. The maximum concentration of hydrogen in the generated gas is found to be 26.43%, 21.67%, 17.64%, and 20.84% while the cumulative yield of hydrogen remains 114.1, 109.27, 104.87, and 107.38 mL g− 1 Total Solid (TS) with CaO2, ZnO, CuO, and CaCO3 respectively. The sample in which no additive is used (control) exhibits a maximum hydrogen concentration of 17% and a cumulative hydrogen generation of 101.57 mL g− 1 TS in the produced gas. Result reveals an enhancement in the hydrogen concentration up to 9.43% whereas the cumulative hydrogen yield is increased up to 11% with additives compared to the control sample. Overall the hydrogen fermentation can be significantly enhanced with the additives through the anaerobic co-digestion process.

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“…Moreover, this research also demonstrated that CO2 could be sequestrated in 278 the SAMBR by mineral carbonation. This offers an interesting option to remove CO2 from the 279 biogas and increase its calorific value (Salek et al, 2016). 280 281…”

Section: Change In Dissolved Ion Concentration In the Process 219mentioning

confidence: 99%

Inorganic fouling of an anaerobic membrane bioreactor treating leachate from the organic fraction of municipal solid waste (OFMSW) and a polishing aerobic membrane bioreactor

Trzcinski

Stuckey

2016

Bioresource Technology

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The treatment of leachate (Average TCOD=11.97 g/L, 14.4% soluble) from the organic fraction of municipal solid waste was investigated using a Submerged Anaerobic Membrane BioReactor (SAMBR), followed by an aerobic membrane bioreactor (AMBR) to polish this effluent. This paper investigated the exact nature and composition of the inorganic precipitate in each of the reactors in the process. The flux decreased due to precipitation of calcium as monohydrocalcite (CaCO3·H2O) containing traces of metals onto the SAMBR membrane because of high CO2 partial pressures. Precipitation of calcium in the AMBR was also observed due to a higher pH. In this case, phosphorus also precipitated with calcium in two different phases: the background layer contained calcium, oxygen, carbon and small amounts of phosphorus (2-6.7%), while flakes containing calcium, oxygen and higher amounts of phosphorus (10-17%) were probably hydroxyapatite (Ca5(PO4)3OH).

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Kinetics of CaCO 3 precipitation in an anaerobic digestion process integrated with silicate minerals

Cited by 14 publications

References 37 publications

Assessing the Kinetics and Pore‐Scale Characteristics of Biological Calcium Carbonate Precipitation in Porous Media using a Microfluidic Chip Experiment

Assessing the Kinetics and Pore‐Scale Characteristics of Biological Calcium Carbonate Precipitation in Porous Media using a Microfluidic Chip Experiment

Effect of Various Potential Additives on Hydrogen Fermentation During the Co-Digestion of Food Waste and Cow Dung

Inorganic fouling of an anaerobic membrane bioreactor treating leachate from the organic fraction of municipal solid waste (OFMSW) and a polishing aerobic membrane bioreactor

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