Sulfur dioxide as a sulfur source in duckweeds (Lemna minor L.)

Chr. Brunold; K. H. Erismann

doi:10.1007/bf01940800

The Recovery of Sulfur Resource during Regeneration Process for the Hot Gas Desulfurization Sorbent

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.881-883.306 ◽

2014 ◽

Vol 881-883 ◽

pp. 306-309

Author(s):

Yan Hui Hu ◽

Shang Guan Ju ◽

Lei Yang ◽

Yu Kun Gao ◽

Hui Ling Fan

Keyword(s):

Sulfur Dioxide ◽

Elemental Sulfur ◽

Future Research ◽

Sulfur Source ◽

Catalyst Poisoning ◽

Important Goal ◽

Hot Gas ◽

Selective Catalytic Oxidation ◽

Hot Coal Gas ◽

Hot Gas Desulfurization

Recovery of sulfur source is an important goal of industrialization regeneration for hot coal gas desulfurization sorbent. The different sulfide forms of sulfur produced in regeneration atmosphere and the method for recovering of sulfur source are discussed in this paper. The regeneration exhausted gas of high temperature desulfurization sorbent mainly has several forms of sulfides: sulfur dioxide, hydrosulfide and elemental sulfur, sulfide form and regeneration atmosphere have a direct relationship. Recovering sulfur dioxide utilize the reduction of CO or ammonia, and recovering hydrosulfide use selective catalytic oxidation which is the desulfurization method for achieve prospects of industrialization, but there is catalyst poisoning in these methods. We point out that the direct recovery of elemental sulfur from different forms of sulfide will be the focus of future research.

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Synthesis of thiophosphates through a three-component reaction by using sulfur dioxide as the sulfur source

Organic Chemistry Frontiers ◽

10.1039/c7qo00634a ◽

2017 ◽

Vol 4 (11) ◽

pp. 2221-2225 ◽

Cited By ~ 21

Author(s):

Xinxing Gong ◽

Jiahao Chen ◽

Jianhe Liu ◽

Jie Wu

Keyword(s):

Sulfur Dioxide ◽

Visible Light ◽

Visible Light Irradiation ◽

Light Irradiation ◽

Sulfur Source ◽

Three Component Reaction

Generation of thiophosphates through a three-component reaction of diaryliodonium tetrafluoroborates, 1,4-diazabicyclo[2.2.2]octane-sulfur dioxide (DABCO·(SO2)2), and diarylphosphine oxides under visible light irradiation is described.

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The influence of sublethal concentrations of sulfur dioxide on morphology, growth and product yield of the duckweed Lemna minor L.

Oecologia ◽

10.1007/bf00361236 ◽

1976 ◽

Vol 23 (3) ◽

pp. 201-209 ◽

Cited By ~ 6

Author(s):

H. Fankhauser ◽

Chr. Brunold ◽

K. H. Erismann

Keyword(s):

Sulfur Dioxide ◽

Lemna Minor ◽

Product Yield ◽

Sublethal Concentrations

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Low temperature x-ray microanalysis of frozen-hydrated tobacco leaves

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100111537 ◽

1984 ◽

Vol 42 ◽

pp. 284-285

Author(s):

S. Edith Taylor ◽

Patrick Echlin ◽

May McKoon ◽

Thomas L. Hayes

Keyword(s):

Low Temperature ◽

Lemna Minor ◽

Root Tips ◽

Tobacco Leaves ◽

X Ray ◽

Whole Cells ◽

Carbon Coated ◽

The Right ◽

Beam Currents ◽

The University

Low temperature x-ray microanalysis (LTXM) of solid biological materials has been documented for Lemna minor L. root tips. This discussion will be limited to a demonstration of LTXM for measuring relative elemental distributions of P,S,Cl and K species within whole cells of tobacco leaves.Mature Wisconsin-38 tobacco was grown in the greenhouse at the University of California, Berkeley and picked daily from the mid-stalk position (leaf #9). The tissue was excised from the right of the mid rib and rapidly frozen in liquid nitrogen slush. It was then placed into an Amray biochamber and maintained at 103K. Fracture faces of the tissue were prepared and carbon-coated in the biochamber. The prepared sample was transferred from the biochamber to the Amray 1000A SEM equipped with a cold stage to maintain low temperatures at 103K. Analyses were performed using a tungsten source with accelerating voltages of 17.5 to 20 KV and beam currents from 1-2nA.

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Elemental Analysis of Phloem Tissue in Lemna Minor Root Tips

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s1431927600003470 ◽

1980 ◽

Vol 38 ◽

pp. 798-799

Author(s):

Patrick Echlin ◽

Thomas Hayes ◽

Clifford Lai ◽

Greg Hook

Keyword(s):

Vascular Tissue ◽

Lemna Minor ◽

Atomic Weight ◽

Companion Cell ◽

Root Tips ◽

Phloem Tissue ◽

Cell Stage ◽

Phloem Parenchyma ◽

Parenchyma Cells ◽

Xylem Element

Studies (1—4) have shown that it is possible to distinguish different stages of phloem tissue differentiation in the developing roots of Lemna minor by examination in the transmission, scanning, and optical microscopes. A disorganized meristem, immediately behind the root-cap, gives rise to the vascular tissue, which consists of single central xylem element surrounded by a ring of phloem parenchyma cells. This ring of cells is first seen at the 4-5 cell stage, but increases to as many as 11 cells by repeated radial anticlinal divisions. At some point, usually at or shortly after the 8 cell stage, two phloem parenchyma cells located opposite each other on the ring of cells, undergo an unsynchronized, periclinal division to give rise to the sieve element and companion cell. Because of the limited number of cells involved, this developmental sequence offers a relatively simple system in which some of the factors underlying cell division and differentiation may be investigated, including the distribution of diffusible low atomic weight elements within individual cells of the phloem tissue.

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