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Effects of heating on composition, degree of darkness, and stacking nanostructure of soil humic acids.

The Science of the total environment

Katsumi N, Yonebayashi K, Okazaki M.
PMID: 26398447
Sci Total Environ. 2016 Jan 15;541:23-32. doi: 10.1016/j.scitotenv.2015.09.012. Epub 2015 Sep 19.

Wildfires and prescribed burning can affect both the quality and the quantity of organic matter in soils. In this study, we investigated qualitative and quantitative changes of soil humic substances in two different soils (an Entisol from a paddy...

Copper binding to soil fulvic and humic acids: NICA-Donnan modeling and conditional affinity spectra.

Journal of colloid and interface science

Xu J, Tan W, Xiong J, Wang M, Fang L, Koopal LK.
PMID: 27061366
J Colloid Interface Sci. 2016 Jul 01;473:141-51. doi: 10.1016/j.jcis.2016.03.066. Epub 2016 Apr 01.

Binding of Cu(II) to soil fulvic acid (JGFA), soil humic acids (JGHA, JLHA), and lignite-based humic acid (PAHA) was investigated through NICA-Donnan modeling and conditional affinity spectrum (CAS). It is to extend the knowledge of copper binding by soil...

Effect of biochar amendment on compost organic matter composition following aerobic composting of manure.

The Science of the total environment

Hagemann N, Subdiaga E, Orsetti S, de la Rosa JM, Knicker H, Schmidt HP, Kappler A, Behrens S.
PMID: 28892724
Sci Total Environ. 2018 Feb 01;613:20-29. doi: 10.1016/j.scitotenv.2017.08.161. Epub 2017 Sep 09.

Biochar, a material defined as charred organic matter applied in agriculture, is suggested as a beneficial additive and bulking agent in composting. Biochar addition to the composting feedstock was shown to reduce greenhouse gas emissions and nutrient leaching during...

Effect of soil fulvic and humic acid on binding of Pb to goethite-water interface: Linear additivity and volume fractions of HS in the Stern layer.

Journal of colloid and interface science

Xiong J, Koopal LK, Weng L, Wang M, Tan W.
PMID: 26164243
J Colloid Interface Sci. 2015 Nov 01;457:121-30. doi: 10.1016/j.jcis.2015.07.001. Epub 2015 Jul 02.

The effects of soil fulvic (JGFA) and humic acid (JGHA) on Pb binding to goethite were investigated with batch experiments and modeling. The CD-MUSIC and NICA-Donnan model could describe the Pb binding to, respectively, the binary Pb-goethite and Pb-HS...

Bacterial Exopolysaccharide mediated heavy metal removal: A Review on biosynthesis, mechanism and remediation strategies.

Biotechnology reports (Amsterdam, Netherlands)

Gupta P, Diwan B.
PMID: 28352564
Biotechnol Rep (Amst). 2016 Dec 23;13:58-71. doi: 10.1016/j.btre.2016.12.006. eCollection 2017 Mar.

Heavy metal contamination has been recognized as a major public health risk, particularly in developing countries and their toxicological manifestations are well known. Conventional remediation strategies are either expensive or they generate toxic by-products, which adversely affect the environment....

Nanofiltration and Tight Ultrafiltration Membranes for Natural Organic Matter Removal-Contribution of Fouling and Concentration Polarization to Filtration Resistance.

Membranes

Winter J, Barbeau B, Bérubé P.
PMID: 28671604
Membranes (Basel). 2017 Jul 02;7(3). doi: 10.3390/membranes7030034.

Nanofiltration (NF) and tight ultrafiltration (tight UF) membranes are a viable treatment option for high quality drinking water production from sources with high concentrations of contaminants. To date, there is limited knowledge regarding the contribution of concentration polarization (CP)...

Allochthonous matter: an important factor shaping the phytoplankton community in the Baltic Sea.

Journal of plankton research

Paczkowska J, Rowe OF, Schlüter L, Legrand C, Karlson B, Andersson A.
PMID: 28566797
J Plankton Res. 2017 Jan;39(1):23-34. doi: 10.1093/plankt/fbw081. Epub 2016 Nov 26.

It is well-known that nutrients shape phytoplankton communities in marine systems, but in coastal waters allochthonous dissolved organic matter (ADOM) may also be of central importance. We studied how humic substances (proxy of ADOM) and other variables influenced the...

Impact of agricultural management on bacterial laccase-encoding genes with possible implications for soil carbon storage in semi-arid Mediterranean olive farming.

PeerJ

Moreno B, Benitez E.
PMID: 27547563
PeerJ. 2016 Jul 21;4:e2257. doi: 10.7717/peerj.2257. eCollection 2016.

BACKGROUND: In this work, we aimed to gain insights into the contribution of soil bacteria to carbon sequestration in Mediterranean habitats. In particular, we aimed to use bacterial laccase-encoding genes as molecular markers for soil organic C cycling. Using...

Stability of nTiO2 particles and their attachment to sand: Effects of humic acid at different pH.

The Science of the total environment

Wu Y, Cheng T.
PMID: 26439650
Sci Total Environ. 2016 Jan 15;541:579-589. doi: 10.1016/j.scitotenv.2015.09.116. Epub 2015 Oct 03.

The fate and transport of nano-scale or micro-scale titanium dioxide particles (nTiO2) in subsurface environments are strongly influenced by the stability of nTiO2 and their attachment to sediment grains. nTiO2 may carry either positive or negative charges in natural...

Humic Substances Delay Aging of the Photosynthetic Apparatus of Chara hispida.

Journal of phycology

Pörs Y, Steinberg CE.
PMID: 27010001
J Phycol. 2012 Dec;48(6):1522-9. doi: 10.1111/jpy.12012. Epub 2012 Nov 07.

In freshwaters, dissolved humic substances (HSs) distinguish apparently HS-avoiding Charophytes from apparently HS-tolerant ones, but the underlying mechanisms so far remain obscure. In this contribution, we tested direct and indirect effects of HSs on Chara hispida (L.) Hartm. Using...

Abiotic reversible self-assembly of fulvic and humic acid aggregates in low electrolytic conductivity solutions by dynamic light scattering and zeta potential investigation.

The Science of the total environment

Esfahani MR, Stretz HA, Wells MJ.
PMID: 26282742
Sci Total Environ. 2015 Dec 15;537:81-92. doi: 10.1016/j.scitotenv.2015.08.001. Epub 2015 Aug 14.

The aggregation of humic substances and their interaction with filtration media (membranes, soils) has implications for our understanding of membrane fouling during water treatment, the facilitated transport of contaminants, and the transport of organic matter through the microbial loop....

Experimental evidence of incomplete fluorescence quenching of pyrene bound to humic substances: implications for Koc measurements.

Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology

Shirshin EA, Budylin GS, Grechischeva NY, Fadeev VV, Perminova IV.
PMID: 27279258
Photochem Photobiol Sci. 2016 Jul 06;15(7):889-95. doi: 10.1039/c6pp00052e.

Fluorescence quenching (FQ) is extensively used for quantitative assessment of partition coefficients (KOC) of polycyclic aromatic hydrocarbons (PAHs) to natural organic materials - humic substances (HS). The presence of bound PAHs with incompletely quenched fluorescence would lead to underestimation...

Showing 1 to 12 of 443 entries