Wood biomass fly ash ameliorates acidic, low-nutrient hydromorphic soil &amp; reduces metal accumulation in maize

Ondrašek, Gabrijel; Zovko, Monika; Kranjčec, Filip; Savić, Radovan; Romić, Davor; Rengel, Zed

doi:10.1016/j.jclepro.2020.124650

Cited by 28 publications

(23 citation statements)

References 51 publications

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“…These biomass fly ashes, due to their high production and their physical and chemical characteristics, have been studied by different researchers for their valorisation. This research includes the reuse of these fly ashes as a partial substitute for cement [27], as an additive to concrete [28], for the production of geopolymers [29], for the improvement of soils low in nutrients [30], and even for nanotechnology [31].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Physical, Chemical, and Environmental Properties of Biomass Bottom Ash for Use as a Filler in Bituminous Mixtures

et al. 2021

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The road construction sector is one of the most raw material-intensive sectors in existence. As a result, it has a significant impact on the environment. For this reason, there are several research projects in which industrial by-products are used as raw materials. In turn, energy production from biomass combustion is considered to be one of the most promising energy sources. However, this type of energy produces a number of wastes that need to be treated, such as biomass bottom ash. This research evaluates the properties of biomass bottom ash for use as a filler in bituminous mixtures and quantifies the environmental advantages of its use. For this purpose, the chemical composition of the ashes was analysed and their properties were physically characterised to confirm their suitability as a filler. Subsequently, the advantages of its processing compared to limestone filler, lime, or cement were calculated with SimaPro software. The results showed acceptable properties of biomass bottom ash for use as a filler, as well as a drastic reduction in the environmental impact of its processing. In short, this research presents the basis for the development of further bituminous mixtures with biomass bottom ash, reducing the extraction of raw materials and avoiding landfill disposal.

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Section: Introductionmentioning

confidence: 99%

Evaluation of Physical, Chemical, and Environmental Properties of Biomass Bottom Ash for Use as a Filler in Bituminous Mixtures

et al. 2021

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“…Fly ash was derived from the combustion of deciduous hardwood chips, dominantly composed of oak (85%), hornbeam (10%), ash (3%) and some other species (2%) at the cogeneration biomass plant facility Viridas Biomass, Babina Greda, Croatia (45°11′N, 18°51′E; more in [28]; Table 1).…”

Section: Chemicals and Materialsmentioning

confidence: 99%

“…1 Schematic presentation of herbicide pathways in the agro-forest ecosystems after application in weed management, and chemical structure of terbuthylazine. Red line encompasses reforested area at the edge of the Spacva watershed, as one of the most significant pool of certified deciduous forest biomass for power plant facilities in Croatia (pesticides, heavy metals), bioashes have intensively been studied over the last decades and are recognised as valuable and eco-friendly resources in eco-/civil-engineering [24][25][26] and environmental remediation [27][28][29]. Additionally, in some EU countries such as Croatia, biomass power plant facilities are fuelled exclusively by virgin, certificated hardwood forest biomass (without admixtures such municipal bio-waste), generating bioash forms enriched in alkali minerals and macro-nutrients (Ca, Mg, K, P), but low in metal (Hg, Pb, Ni, Cr, Cd), carbon and sulfur content.…”

Section: Introductionmentioning

confidence: 99%

Hardwood fly ash as a low-C waste has strong potential to become a value-added sorbent for removal of the herbicide terbuthylazine from the aquatic matrix

Ondrašek

Kranjčec

Maltašić

et al. 2021

Biomass Conv. Bioref.

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Due to intensive activities in agriculture, forestry and transport sectors, certain active components of pesticides that are prone to leaching become emergent chemicals in aquatic systems. Terbuthylazine (TBA), as one of widely used broad-spectrum herbicides, has been recognized as relatively (e.g. vs atrazine) more hydrophobic and resistant to biodegradation, dissipates much more slowly in aquatic ecosystems and often exceeds the EU limit for drinking water (0.1 μg/L). The in-depth characterisation of fly ash (FA, from a cogeneration plant facility fuelled by deciduous hardwood chips) using advanced in situ approaches (scanning electron microscopy, X-ray diffraction) raised the hypotheses that developed nano-to-micro-structure and alkaline Ca/Mg/Si-enriched mineralogy of FA could be effectively exploited for removal of TBA from watercourses. Thus, the aim of study was to investigate dissipation dynamic and adsorption mechanism of TBA in aquatic media amended with FA. The results show that 48 h after addition of FA (1% w/v) to watercourse, TBA was completely removed from its initial level (250-fold higher than the EU limit for drinking water), while in the Control (without FA) treatment, TBA remained nearly 80% of its initial amount. The X-ray photoelectron spectral footprint of FA after 48-h exposure to TBA revealed a shift in peak position and intensity among O, Ca, K, Mg and Si, suggesting that their active sites likely participated in adsorption of TBA and its removal from the watercourse. Adsorption kinetics were clearly described by the pseudo-second order model (R 2 = 0.9997), assuming single-layer chemisorption as a rate-controlling mechanism, but multilayer physisorption and intra-pore diffusion could also be present. The equilibrium adsorption data fitted the best to the Langmuir isotherm model, confirming the spontaneous monolayer TBA-FA interaction with a mean maximum adsorption capacity of 84 mg/g FA (1% w/v) after 24-h contact time at 25 °C and pH 12. These results will contribute to formulation and development of novel FA-based polymers, targeted for purification of aquatic ecosystems loaded with TBA and similar compounds that represent threat to environmental and human health.

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“…Biomass fly ash has been analyzed by different researchers in order to find new utilization pathways [8]. The main research carried out is based on the use of biomass fly ash as a partial substitute for cement [8], as an additive in concrete [9], for the manufacture of geopolymers [10], as an element for soil improvement for agriculture (thanks to its chemical composition) [11], and even for nanotechnology [12]. In most cases, the results obtained were acceptable, and the reuse of a waste condemned to landfill was achieved.…”

Section: Introductionmentioning

confidence: 99%

Study of the Incorporation of Biomass Bottom Ash as a Filler for Discontinuous Grading Bituminous Mixtures with Bitumen Emulsion

et al. 2021

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Energy consumption, because of population development, is progressively increasing. For this reason, new sources of energy are being developed, such as that produced from the combustion of biomass. However, this type of renewable energy has one main disadvantage, the production of waste. Biomass bottom ash is a residue of this industry that currently has not much use. For this reason, this research evaluates its use as a filler in bituminous mixtures, since this sector also has a significant impact on the environment, as it requires large quantities of raw materials. With this objective, first, the physical and chemical properties of biomass bottom ashes were evaluated, verifying their characteristics for their use as filler. Subsequently, bituminous mixtures were conformed with biomass bottom ash as filler, and their physical and mechanical properties were analyzed through particle loss and Marshall tests. The results of these tests were compared with those obtained with the same type of mixture but with conventional and ophite aggregates. This study confirmed that biomass bottom ash was viable for use as a filler, creating mixtures with a higher percentage of bitumen, better mechanical behavior, and similar physical properties. In short, more sustainable material for roads was obtained with waste currently condemned to landfill.

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Wood biomass fly ash ameliorates acidic, low-nutrient hydromorphic soil & reduces metal accumulation in maize

Cited by 28 publications

References 51 publications

Evaluation of Physical, Chemical, and Environmental Properties of Biomass Bottom Ash for Use as a Filler in Bituminous Mixtures

Evaluation of Physical, Chemical, and Environmental Properties of Biomass Bottom Ash for Use as a Filler in Bituminous Mixtures

Hardwood fly ash as a low-C waste has strong potential to become a value-added sorbent for removal of the herbicide terbuthylazine from the aquatic matrix

Study of the Incorporation of Biomass Bottom Ash as a Filler for Discontinuous Grading Bituminous Mixtures with Bitumen Emulsion

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