Sorption of metal ions from aqueous solution to spruce bark

Su, Pingping; Granholm, Kim; Pranovich, Andrey; Harju, Leo; Holmbom, Bjarne; Ivaska, Ari

doi:10.1007/s00226-013-0562-7

Cited by 19 publications

(23 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Carbon is the main component in organic compounds such as cellulose, hemicellulose, and lignin, but also tannins, resins, pectins, and phenolic acids. The last two compounds are important in the adsorption process, whereas cellulose and lignin compounds should be pre-treated before use as adsorbents [ 6 ].…”

Section: Resultsmentioning

confidence: 99%

“…Poikolainen [ 88 ] found pine bark Fe and Mn contents of 30–84 mg Fe/kg and 35–64 mg Mn/kg, respectively. For comparison, Liu et al [ 6 ] found high Fe (141 mg/kg) and Mn (154 mg/kg) contents in pine bark. Aniszewska et al [ 74 ] found a high iron content of 1130 mg/kg in pine and spruce seeds.…”

Section: Resultsmentioning

confidence: 99%

“…Bark is a cheap and widely available by-product from both forestry and the pulp and wood industries. It may be used directly as a fuel source, soil, or mulching additive [ 5 ], and, to some extent, in the production of furniture particleboards [ 6 , 7 ]. It also has great potential as an effective and inexpensive sorbent for removing pollutants from water or wastewater or for gas purification [ 8 , 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Assessment of the Composition of Forest Waste in Terms of Its Further Use

et al. 2021

View full text Add to dashboard Cite

This paper presents the results of the analysis of the chemical composition and content of heavy metal contamination in forest logging residues, in order to assess the possibility for their further utilisation. The samples were divided into 9 groups, which included coniferous tree cones, wood, and other multi-species logging residues. The elementary composition, ash content, and calorific value were determined as energy use indicators for the samples. Additionally, the content of heavy and alkali metals, which may affect combustion processes and pollutant emissions, was tested. The high content of heavy metals may also disqualify these residues for other uses. The research shows that the test residues are suitable for energy use due to their high calorific value and low content of heavy metals. However, an increased ash content in some samples and the presence of alkali metals, causing high-temperature corrosion of boilers, may disqualify them as a potential fuel in the combustion process. The forest residues may be used in other thermal processes such as pyrolysis or gasification. A low content of heavy metals and a high content of organic matter permit the use of these residues for the production of adsorbents or composite materials.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Assessment of the Composition of Forest Waste in Terms of Its Further Use

et al. 2021

View full text Add to dashboard Cite

show abstract

“…These diffusion coefficients are significantly lower than what may be expected for other ions in wood, which are often several orders of magnitude higher, 10 −15 -10 −10 m 2 s −1 [51]. Thus, the unusually tight binding of Fe(III) to wood [52][53][54][55], is clearly slowing the diffusion. While there is scatter in the data and the diffusion lengths are ill-defined, it is clear that the diffusion of iron in the acetylated wood is not orders of magnitude lower than untreated wood as predicted if the mechanism by which acetylation inhibits brown rot decay is hindering diffusion [19].…”

Section: Resultsmentioning

confidence: 82%

“…If the value of the retention factor for iron(III) ions with wood is K > 100, then the observed D eff near 10 −16 m 2 s −1 could be expected. The chromatography literature using a wood stationary phase [52][53][54][55] suggests that a K of this magnitude for Fe(III) is not unreasonable.…”

Section: Discussionmentioning

confidence: 99%

The Effect of Acetylation on Iron Uptake and Diffusion in Water Saturated Wood Cell Walls and Implications for Decay

Zelinka

Houtman

Hirth

et al. 2020

Forests

View full text Add to dashboard Cite

Acetylation is widely used as a wood modification process that protects wood from fungal decay. The mechanisms by which acetylation protects wood are not fully understood. With these experiments, we expand upon the literature and test whether previously observed differences in iron uptake by wood were a result of decreased iron binding capacity or slower diffusion. We measured the concentration of iron in 2 mm thick wood sections at 0, 10, and 20% acetylation as a function of time after exposure to iron solutions. The iron was introduced either strongly chelated with oxalate or weakly chelated with acetate. The concentrations of iron and oxalate in solution were chosen to be similar to those found during brown rot decay, while the concentration of iron and acetate matched previous work. The iron content of oxalate-exposed wood increased only slightly and was complete within an hour, suggesting little absorption and fast diffusion, or only slight surface adsorption. The increase in iron concentration from acetate solutions with time was consistent with Fickian diffusion, with a diffusion coefficient on the order of 10−16 m2 s−1. The rather slow diffusion rate was likely due to significant binding of iron within the wood cell wall. The diffusion coefficient did not depend on the acetylation level; however, the capacity for iron absorption from acetate solution was greatly reduced in the acetylated wood, likely due to the loss of OH groups. We explored several hypotheses that might explain why the diffusion rate appears to be independent of the acetylation level and found none of them convincing. Implications for brown rot decay mechanisms and future research are discussed.

show abstract

Surface Absorption of 137Cs Through Tree Bark

Wang

2019

Radiocesium Dynamics in a Japanese Forest Ecosystem

View full text Add to dashboard Cite

Sorption of metal ions from aqueous solution to spruce bark

Cited by 19 publications

References 22 publications

Assessment of the Composition of Forest Waste in Terms of Its Further Use

Assessment of the Composition of Forest Waste in Terms of Its Further Use

The Effect of Acetylation on Iron Uptake and Diffusion in Water Saturated Wood Cell Walls and Implications for Decay

Surface Absorption of 137Cs Through Tree Bark

Contact Info

Product

Resources

About