Tomato waste biochar in the framework of circular economy

Stylianou, Marinos; Terpsithea, Psichoula; Bennici, Simona; Dutournié, Patrick; Limousy, Lionel; Agapiou, Agapios; Papamichael, Iliana; Khiari, Besma; Jeguirim, Mejdi; Zorpas, Antonis A.

doi:10.1016/j.scitotenv.2023.161959

Cited by 18 publications

(5 citation statements)

References 56 publications

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“…A Spearman's correlation was performed to shed light on this subject and identified a strong, positive correlation between B. Bifidum and B. longum (rho = 0.82, q = 0.004) and a strong, negative correlation between B. adolescentis and B. pseudocatenulatum (rho = -0.56, q = 0.162), which may be due to interaction or cross-feeding between these species, yet it was noted that B. bifidum and B. pseudocatenulatum were not present in all donors. However, the Spearman's correlation between Bifidobacterium presented here provided insight into potential interdependency or exclusionary interactions of these species within a community setting, but the limited number of donors in this study (6) impeded the ability to draw definitive conclusions on this topic.…”

Section: Discussionmentioning

confidence: 98%

“…Tomatoes are one of the most popular vegetables across the globe, both in terms of cultivation and consumption [3,4]. One remarkable benefit of this agricultural product is the ability to process it into products that are both flavorful and stable at ambient temperatures for a long period of time [2,5,6]. The increased popularity of these products, coupled with the burden of waste disposal and need for nutritious components to feed a growing population, calls for novel strategies to utilize and/or repurpose tomato waste generated from processing [5,[7][8][9][10].…”

Section: Discussionmentioning

confidence: 99%

“…In the United States, tomatoes come in second to potatoes in the category of most consumed vegetable, they are the most popular canned vegetable, and the tomato-based products salsa and ketchup are the 1 st and 2 nd most popular condiments [3,4]. Although tomatoes are often eaten fresh, they are more commonly consumed as processed products, such as tomato puree, paste, or sauce, which can be used further to create a number of tomato-based dishes and prolongs shelf-life [2,5,6]. While this is advantageous to the consumer, tomato processing generates an estimated 5.4-9 million tons of waste a year, largely in the form of pomace containing the skins, some pulp, and tomato seeds, which is often discarded or used as an additive for animal feed [5,[7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Tomato seed extract promotes health of the gut microbiota and demonstrates a potential new way to valorize tomato waste

Firrman,

Narrowe,

Liu

et al. 2024

PLoS ONE

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The current effort to valorize waste byproducts to increase sustainability and reduce agricultural loss has stimulated interest in potential utilization of waste components as health-promoting supplements. Tomato seeds are often discarded in tomato pomace, a byproduct of tomato processing, yet these seeds are known to contain an array of compounds with biological activity and prebiotic potential. Here, extract from tomato seeds (TSE), acquired from pomace, was evaluated for their ability to effect changes on the gut microbiota using an ex vivo strategy. The results found that TSE significantly increased levels of the beneficial taxa Bifidobacteriaceae in a donor-independent manner, from a range of 18.6–24.0% to 27.0–51.6% relative abundance following treatment, yet the specific strain of Bifidobacteriaceae enhanced was inter-individually variable. These structural changes corresponded with a significant increase in total short-chain fatty acids, specifically acetate and propionate, from an average of 13.3 to 22.8 mmol/L and 4.6 to 7.4 mmol/L, respectively. Together, these results demonstrated that TSE has prebiotic potential by shaping the gut microbiota in a donor-independent manner that may be beneficial to human health. These findings provide a novel application for TSE harvested from tomato pomace and demonstrate the potential to further valorize tomato waste products.

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Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Tomato seed extract promotes health of the gut microbiota and demonstrates a potential new way to valorize tomato waste

Firrman,

Narrowe,

Liu

et al. 2024

PLoS ONE

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show abstract

“…Another noteworthy and essential material is biochar. Biochar (BC) is a biomaterial derived from various biomass sources [25,26], including forest residues, agricultural byproducts like tomato marc [27], waste tea leaves [28], and even algal waste [29]. Biochar production is more economical [30,31] and has less environmental impact than the production of activated carbon.…”

Section: Introductionmentioning

confidence: 99%

Nitrogen Removal from Landfill Leachate Using Biochar Derived from Wheat Straw

Igwegbe,

Kozłowski,

Wąsowicz

et al. 2024

Materials

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Landfill leachate (LLCH) disposal poses challenges due to high pollutant concentrations. This study investigates the use of biochar (BC) derived from wheat straw for nitrogen content reduction. Laboratory experiments evaluated BC’s adsorption capacity (qm) for nitrogen removal from ammonium chloride solution (NH4Cl) and LLCH, along with testing isotherm models. The results demonstrated that BC was more efficient (95.08%) than commercial activated carbon AC (93.11%), the blank, in adsorbing nitrogen from NH4Cl. This superior performance of BC may be attributed to its higher carbon content (57.74%) observed through elemental analysis. Lower results for BC/LLCH may be due to LLCH’s complex chemical matrix. The Langmuir isotherm model best described BC/NH4Cl adsorption (qm = 0.5738 mg/g). The AC/NH4Cl data also fitted into the Langmuir (R2 ˃ 0.9) with a qm of 0.9469 mg/g, and 26.667 mg/g (R2 ˂ 0.9) was obtained for BC/LLCH; the BC/LLCH also gave higher qm (R2 ˃ 0.9) using the Jovanovich model (which also follows Langmuir’s assumptions). The mean energy of the adsorption values estimated for the AC/NH4Cl, BC/NH4Cl, and BC/LLCH processes were 353.55, 353.55, and 223.61 kJ/mol, respectively, suggesting that they are all chemisorption processes and ion exchange influenced their adsorption processes. The Freundlich constant (1/n) value suggests average adsorption for BC/LLCH. The BC/LLCH data followed the Harkins–Jura model (R2: 0.9992), suggesting multilayered adsorption (or mesopore filling). In conclusion, biochar derived from wheat straw shows promising potential for landfill leachate remediation, offering efficient nitrogen removal capabilities and demonstrating compatibility with various adsorption models. This research also lays the groundwork for further exploration of other biochar-based materials in addressing environmental challenges associated with landfill leachate contamination.

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“…Thermal waste treatment leads to volume reduction and decomposition of potentially toxic organic matter as well as accumulation of volatile heavy metals (HM) in the municipal solid waste incineration (MSWI) fly ash (FA). The recovery of metals from the incineration residues prior to their deposition in landfills contributes valuably to the sustainable closure of material cycles in the sense of a circular economy (European Environment Agency, 2014; Stylianou et al, 2023). The MSWI FA thereby represents a secondary mining source (Tang et al, 2022), with the potential to substitute metals from primary raw material mining.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic model of MSWI flue gas cooling path: Effect of flue gas composition on heavy metal binding forms

et al. 2023

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In the context of circular economy and heavy metal (HM) recovery from municipal solid waste incineration (MSWI) fly ash (FA), detailed knowledge of HM binding forms is required for achieving higher extraction rates. The FA mineralogy is still poorly understood due to its low grain size and low metal concentration. To investigate the HM binding forms, a sophisticated thermodynamic reactive transport model was developed to simulate ash-forming processes. The stability of different binding forms was investigated at different flue gas conditions (varying ratios of HCl, SO2, O2) by simulating the gas cooling path in closed system and dynamic open system, where the gas composition is changing upon cooling due to precipitation of solids. The simulations predict that at flue gas conditions of molar ratio S/Cl < 1, Cu and Zn precipitate as oxides (and Zn silicates) at approximately 650°C. At temperatures <300°C, Zn, Cu, Pb and Cd are predicted to precipitate as easily soluble chlorides. In flue gas with molar ratio S/Cl > 1, the HM precipitate as less soluble sulphates. The results indicate that the less soluble HM fraction in the electrostatic precipitator ash represent oxides and silicates that formed in the boiler section but were transported to the electrostatic precipitator. The model provides insight into the physical–chemical processes controlling the metal accumulation in the flue gas and FA during the cooling of the flue gas. The obtained data serve as valuable basis for improving metal recovery from MSWI FA.

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Tomato waste biochar in the framework of circular economy

Cited by 18 publications

References 56 publications

Tomato seed extract promotes health of the gut microbiota and demonstrates a potential new way to valorize tomato waste

Tomato seed extract promotes health of the gut microbiota and demonstrates a potential new way to valorize tomato waste

Nitrogen Removal from Landfill Leachate Using Biochar Derived from Wheat Straw

Thermodynamic model of MSWI flue gas cooling path: Effect of flue gas composition on heavy metal binding forms

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