MilliporeSigma
  • Home
  • Search Results
  • Characterization of nitrogen-rich biomaterial-derived biochars and their sorption for aromatic compounds.

Characterization of nitrogen-rich biomaterial-derived biochars and their sorption for aromatic compounds.

Environmental pollution (Barking, Essex : 1987) (2014-09-10)
Meng Zhang, Liang Shu, Xiaofang Shen, Xiaoying Guo, Shu Tao, Baoshan Xing, Xilong Wang
ABSTRACT

Biochars from nitrogen-rich biomaterials (i.e., α-amylase, chitin and zein) were produced at different temperatures (i.e. 170, 250, 350 and 450 °C) and characterized, and their sorption for phenanthrene, naphthalene and 1-naphthol was investigated. The organic carbon content normalized-sorption coefficient (Koc) of the tested compounds by biochars increased with increasing charring temperature, attributed to the reduction of O-containing polar moieties especially the O-alkyl components, and the newly created aromatic carbon domains. The N-heterocyclic ring structure formed during charring process may enhance π-π interactions between aromatics and the aromatic components in the resulting biochars. However, π-π interactions did not dominate sorption of aromatics by N-rich biochars. Sorption of the tested compounds by N-rich biochars was predominantly controlled by the hydrophobic interactions between these chemicals and the aromatic components in biochars. Both N- and O-containing polar moieties at the biochar surfaces negatively affected their sorption for aromatics.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Nitrogen, ≥99.998%
Supelco
Activated charcoal, puriss. p.a., powder
Supelco
Activated charcoal, suitable for GC
Supelco
Activated charcoal, powder
Sigma-Aldrich
Activated charcoal, suitable for cell culture, suitable for plant cell culture
Sigma-Aldrich
Phenanthrene, 98%
Supelco
Activated charcoal, for the determination of AOX, 50-150 μm particle size
Supelco
Phenanthrene, analytical standard, for environmental analysis
Carbon, foil, 50x50mm, thickness 0.5mm, flexible graphite, 99.8%
Carbon, foil, 150x150mm, thickness 1.0mm, flexible graphite, 99.8%
Carbon, foil, 150x150mm, thickness 0.25mm, rigid graphite, fine grain size, 99.95%
Carbon, foil, 250x250mm, thickness 1.0mm, flexible graphite, 99.8%
Carbon, foil, 300x300mm, thickness 0.2mm, flexible graphite, 99.8%
Carbon, foil, 150x150mm, thickness 0.2mm, flexible graphite, 99.8%
Carbon, foil, 150x150mm, thickness 0.5mm, rigid graphite, fine grain size, 99.95%
Carbon, foil, 150x150mm, thickness 1.0mm, rigid graphite, fine grain size, 99.95%
Carbon, foil, 25x25mm, thickness 0.125mm, rigid graphite, fine grain size, 99.95%
Carbon, foil, 150x150mm, thickness 0.5mm, flexible graphite, 99.8%
Carbon, foil, 12.5x12.5mm, thickness 0.125mm, rigid graphite, fine grain size, 99.95%
Carbon, rod, 150mm, diameter 2.0mm, graphite, 100%
Carbon, foil, 50mm disks, thickness 0.2mm, flexible graphite, 99.8%
Carbon, foil, 50x50mm, thickness 0.1mm, pyrolytic graphite, 99.99%
Carbon, rod, 300mm, diameter 25mm, graphite, 99.95%
Carbon, rod, 150mm, diameter 10.0mm, graphite, 100%
Carbon, foil, 50x50mm, thickness 5.0mm, rigid graphite, medium grain size, 99.5%
Carbon, tube, graphite, 150mm, outside diameter 6.35mm, inside diameter 3.15mm, wall thickness 1.6mm, 99.95%
Carbon, tube, graphite, 100mm, outside diameter 12.7mm, inside diameter 9.5mm, wall thickness 1.6mm, 99.95%
Carbon, foil, 6mm disks, thickness 0.2mm, flexible graphite, 99.8%
Carbon, foil, 50x50mm, thickness 0.2mm, flexible graphite, 99.8%
Carbon, rod, 150mm, diameter 13.0mm, graphite, 100%