Electrophotography toner adhesion on agro-industrial residue and invasive plant papers

Karlovits, Igor; Lavrič, Gregor; Kavčič, Urška; Zorić, Vladimir

doi:10.1080/01694243.2021.1894694

Cited by 11 publications

(4 citation statements)

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“…F. japonica is known for its participation in numerous ecosystem services [19][20][21][22]. However, as an invasive species, it causes significant structural and functional changes in urban and rural ecosystems [1][2][3][4][5][8][9][10].…”

Section: Discussionmentioning

confidence: 99%

“…japonica is also known for its numerous ecosystem services. The aerial or underground parts of F. japonica show insecticidal [17] and fungicidal potential [18], and have been successfully used in the production of medicine [19], biofuel [20], briquettes for heating [21], paper cellulose fibers [22], textile [23], and as carbon (C) adsorbent [24]. In some of these production processes, the aerial parts of the plant went unused and were disposed of in landfills, although these parts weigh more than half the total mass of the plants [12,19].…”

Section: Introductionmentioning

confidence: 99%

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Invasive Plants in Support of Urban Farming: Fermentation-Based Organic Fertilizer from Japanese Knotweed

et al. 2021

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In this study, fermentation-based organic fertilizer (OF) was produced from the aboveground parts of Fallopia japonica (Houtt.) Ronse Decr. The quantity of N in OF (17.2 kg t−1 fresh lactic-fermented OF) was higher than average in cattle farmyard manure, but on a comparable level to solid poultry and rabbit manure. The OF was applied on a field to evaluate its effect on Chinese cabbage. The applied nutrients with OF N159 were 159, 44 and 121 kg ha−1 for N, P, and K, respectively. The applied nutrients with OF N317 were 317, 38, and 200 kg ha−1 for N, P, and K, respectively. The average mass of marketable Chinese cabbage (Brassica pekinensis Rupr.) single heads ranged from 253 g with N0 treatment to 602 g with N317 treatment. The nutrient recovery efficiency REN,P,K was 37, 20, and 50% for N317 and 55, 48, and 77% for N159. The OF was found to be a suitable alternative to farmyard manure. Additionally, OF produced from F. japonica could complement existing approaches to limit the spread of invasive species in cities. Further research should focus on perennial crop rotations and cropping patterns, different soil types, and a greater variety of crops and consider the possible retention of urban farmers using fertilizer from invasive plants.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Invasive Plants in Support of Urban Farming: Fermentation-Based Organic Fertilizer from Japanese Knotweed

et al. 2021

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“…The United Nations Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services recently confirmed biotic invaders as significant biodiversity drivers of depletion. Innovation has enabled these fibre sources for papermaking 18 and printing substrates. 18,19 For example, in Slovenia, several invasive plant species are prevalent and locally form extensive stands.…”

Section: Introductionmentioning

confidence: 99%

“…Innovation has enabled these fibre sources for papermaking 18 and printing substrates. 18,19 For example, in Slovenia, several invasive plant species are prevalent and locally form extensive stands. They often establish in ruderal areas, along roads, in cities, or on construction sites, where the primary vegetation has been removed.…”

Section: Introductionmentioning

confidence: 99%

Chemical and enzymatic deinking efficiency of agricultural and industrial waste fiber‐based paper packaging

Sežun¹,

Karlovits²,

Kavčič³

2022

J Sci Food Agric

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BACKGROUND Deinking is an important part of paper recycling that involves the removal of ink particles from the paper fibres. This industrial process is important so that the fibres can be recirculated back into paper production, which enables better sustainability as fewer fresh fibres are needed. In this study, we examined five different alternative fibre materials from different agricultural residues and industrial processes for the pilot production of papers. Papers containing fibres from invasive plants (Japanese knotweed), dedicated crops (miscanthus, acacia), agricultural residues (tomato stems), and industrial waste (jute – fibres from coffee bags) were printed with water‐based flexo inks and deinked with two separate processes (chemical and enzymes). Mechanical (break and tensile index, breaking length) and optical properties (ISO whiteness, brightness and CIE L*a*b* values) were measured and ink elimination IR700 and deinking efficiency was calculated for the two deinking processes. RESULTS Enzymatic treatment improved the mechanical properties of deinked pulp in comparison with the classic chemical treatment. Mechanical strength for almost all papers increased slightly (breaking length up to 20% in tomato and jute), and the optical result (brightness) increased similarly for both processes due to the bleaching action of the colour‐shaded samples, whereas the deinking efficiency showed mixed results between chemical‑ and enzyme‐type deinking (with chemical achieving better elimination measured at 700 nm) in the typical range of ink elimination values (15–35%) for flexographic inks. This indicates further optimization of the deinking with enzymes is needed due to different alternative fibre compositions and variations of residues in the delignification processes. CONCLUSION Using a combination of adjusted enzymatic treatment as a precursor for deinking of paper‐based packaging materials sourced from alternative fibres showed promising results regarding mechanical properties, whereas the optical properties need to be improved with cellulase optimization or by using mixes of different enzymes. These kinds of paper materials printed with flexo inks were found to be successfully deinkable with the chemical ISO‐based deinking protocol. © 2022 Society of Chemical Industry.

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Flexo printability of agro and invasive papers

Karlovits¹,

Kavčič²

2022

Cellulose

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Electrophotography toner adhesion on agro-industrial residue and invasive plant papers

Cited by 11 publications

References 30 publications

Invasive Plants in Support of Urban Farming: Fermentation-Based Organic Fertilizer from Japanese Knotweed

Invasive Plants in Support of Urban Farming: Fermentation-Based Organic Fertilizer from Japanese Knotweed

Chemical and enzymatic deinking efficiency of agricultural and industrial waste fiber‐based paper packaging

Flexo printability of agro and invasive papers

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