Chemical and ecotoxicological properties of three bio-oils from pyrolysis of biomasses

Campisi, Tiziana; Samorì, Chiara; Torri, Cristian; Barbera, Giuseppe; Foschini, Anna; Kiwan, Alisar; Galletti, Paola; Tagliavini, Emilio; Pasteris, Andrea

doi:10.1016/j.ecoenv.2016.05.027

Cited by 17 publications

(13 citation statements)

References 31 publications

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“…However, weeds were not completely inhibited by PLM1.75 and PLM3.5 treatments and light and nutrient competition by weeds presumably reduced the yield as it remained below a typical yield of >3,000 g onion per m 2 in Finland (Uusitalo et al , 2018). Ecotoxicological risks of PL applied to soil have previously found to be small by Hagner (2013) and pyrolysis oils have recently been classified as readily biodegradable compounds by Campisi et al (2016). The risks caused by applying a thin layer of PLM with a PL concentration below 3.5% are therefore likely to be negligible in the soil environment.…”

Section: Discussionmentioning

confidence: 99%

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Efficiency of a novel biodegradable pyrolysis liquid‐amended mulch in weed control

et al. 2020

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Agrochemicals and plastics represent a burden on natural ecosystems and there is an urgent need to introduce alternative plant protection measures that have fewer negative impacts on the environment. Replacement of plastic mulches and synthetic pesticides with their biodegradable alternatives offers a way to decrease chemical residues. Pyrolysis liquids (PL) have been suggested as easily degradable and residuefree herbicides for agriculture. We tested the efficiency of PL (1%-10% of volume) containing peat mulch (PLM) in weed control under glasshouse and field conditions. We also estimated the length of the withdrawal period needed between PLM spreading and sowing/planting for crops and examined the light permeability and effects of PLM on soil temperature. In the glasshouse, the mulch amended with 5%-10% PL inhibited weed germination entirely. In the agricultural field, the number of weeds remained 44%-60% lower under PLM than under the control mulch. In a study performed in a city park, weed cover around the base of trees remained 64%-85% lower under PLM than without a mulch. However, a 7-21 d withdrawal period, depending on crop plant species, is needed to avoid injuring the crops. PLM inhibited sunlight effectively and the effects on soil heat sum across the growing season remained small.The weed-inhibiting effect of PLM is probably a result of both the PL compounds and the solid cover, formed by the sticky PL and peat fibres, which acts as a mechanical barrier. We conclude that the PLM is a promising alternative to plastic mulches. K E Y W O R D Spyrolysis acid, wood vinegar, slow pyrolysis, mulching, weed management | 183 HAGNER Et Al.

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Section: Discussionmentioning

confidence: 99%

“… a Determined by diluting 1 ml pyrolysis liquid into 10 ml H 2 O and recovering the water‐insoluble fraction using centrifugation. The aqueous supernatant was analysed by means of a Brix Refractiometer to obtain a fraction that represents the total amount of water‐soluble solutes (Campisi et al, 2016). …”

Section: Methodsmentioning

confidence: 99%

Efficiency of a novel biodegradable pyrolysis liquid‐amended mulch in weed control

et al. 2020

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“…Insecticidal activity has been reported for bio-oils produced by pyrolysis of tobacco leaves (Booker et al, 2010a,b), coffee grounds (Bedmutha et al, 2011), cellulose, hemicellulose, and lignin (Hossain et al, 2013), straw of canola, Brassica spp., (Suqi et al, 2014), residues of greenhouse tomato plants (Cáceres et al, 2015). Pyrolysis oils are known to be biodegradable (Hagner, 2013;Campisi et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Insecticidal activity of bio-oils and biochar as pyrolysis products and their combination with microbial agents against agrotis ipsilon (Lepidoptera: Noctuidae)

et al. 2018

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Pyrolysis technology for producing biochar and bio-oils can be used as a potential alternative to make biopesticides, which are urgently needed in integrated pest management (IPM). Insecticidal activity of three components of bio-oils: aqueous, organic and their mixture, was evaluated individually and with three different entomopathogens: the baculovirus Agrotis ipsilon nucleopolyhedrovirus (AgipMNPV), bacterium Bacillus thuringensis var. kurstaki (Bt) and fungus Beauveria bassiana (Bb) against black cutworm, Agrotis ipsilon (Hufnagel). The effect of alkaline conditions of spray-dried biochar was studied simultaneously with the microbial pathogens. Our bioassay results indicated that the organic bio-oil phase was the most active, causing 100% mortality after 24 h, when the median lethal toxicity values LC50s (mg/ml) were found. However, the bio-oil fractions applied alone tended to cause higher mortality of the exposed larvae than did either mix with the microbial agents. Also, the results revealed that maximum mortalities were found in spray-dried formulations made with biochar at pH 7.1. It was concluded that pyrolysis oils are effective insecticides, and biochar could be a useful additive in production and formulation of biopesticides. This interesting finding further promotes the use of pyrolysis bio-oils and biochar compounds as eco-friendly alternatives to replace conventional pesticides.

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“…Aserrín de mezquite (Campisi et al 2016) presentaron un análisis de aceites de pirólisis y la Tabla 2 resume tales resultados, donde puede compararse una abundancia relativa de los grupos identificados. Nuevamente, los fenoles, ácidos carboxílicos y aldehídos fueron los de mayor concentración, pero en distinta proporción.…”

Section: Aserrín De Pinounclassified

“…Tabla 2. Composición de Bioaceites de pirólisis (p/p % base seca) (Campisi et al 2016). 24 26 Es importante señalar que la abundancia no será la característica más importante para remover el oxígeno del bioaceite, sino que la baja reactividad de las moléculas más refractarias será la principal limitante de la desoxigenación.…”

Section: Aserrín De Pinounclassified

Estudio Cinético en las reacciones de hidrodesulfuración e hidrodesoxigenación con mezclas sintéticas para el co-procesamiento de Diesel

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Chemical and ecotoxicological properties of three bio-oils from pyrolysis of biomasses

Cited by 17 publications

References 31 publications

Efficiency of a novel biodegradable pyrolysis liquid‐amended mulch in weed control

Efficiency of a novel biodegradable pyrolysis liquid‐amended mulch in weed control

Insecticidal activity of bio-oils and biochar as pyrolysis products and their combination with microbial agents against agrotis ipsilon (Lepidoptera: Noctuidae)

Estudio Cinético en las reacciones de hidrodesulfuración e hidrodesoxigenación con mezclas sintéticas para el co-procesamiento de Diesel

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