Structural Features and Fe(II)-Binding Capacities of Humic Acids from Reservoir Sediments Otsuka Keishi Nippon Steel Kankyo Engineering Co Ltd Fukushima Masami Division Of Sustainable Resources Engineering Graduate School Of Engineering Hokkaido University The mixture was effective not only for increasing Fe elution but also for extending the lifetime of the elution 4) The mechanism of Fe elution from the slag-compost fertilizer has also been investigated and proposed 5) Additionally we previously found that the structural features of humic substances are related to the iron-humate formation

Characterization and Cu sorption properties of humic acid

Humic acid (HA) derived from rice straw decomposed for 1 (HA-1) 3 (HA-3) 6 (HA-6) and 12 (HA-12) months was characterized by potentiometric titration and solid-state cross-polarization magic-angle spinning 13C nuclear magnetic resonance spectroscopy (CPMAS 13C NMR) The sorption of Cu on examined HA was investigated using a combination of batch sorption isothermal titration calorimetry

The results were used in the development of weathering steel alloys and to estimate the effects of subsequent changes in composition Data from these tests were analyzed statistically and a set of equations was derived that allow for the calculation of corrosion

Influences of humic acids on the catalytic oxidation of tetrabromobisphenol A (TBBPA) using iron(III)-porphyrin catalysts were investigated The TBBPA was difficult to be oxidized and dehalogenated by the catalysts compared to chlorinated phenols that had been investigated In the catalytic oxidation of TBBPA oxidative coupling reactions that can produce the oligomers were dominant In the

May 31 2012The most popular method of desulfurization is removal of sulfur from molten steel to the basic reducing slag Basic slag is a slag containing mainly basic oxides: CaO MgO MnO FeO A typical basic slag consists of 35-60% CaO + MgO 10-25% FeO 15-30% SiO 2 5-20% MnO Transition of sulfur from steel to slag may be presented by the chemical equation: [S] + (CaO) = (CaS) + [O]

materials and clay minerals and to assess the effect of calcium ions on this association by studying the different features of the humic-clay compounds using microscopic technique We aimed to (1) analyze the chemistry and visualize the surface structure of a humic-mineral composite based on SEM images (2) investigate the impact

Phosphorus in Steels – IspatGuru

Sep 18 2014Detrimental effects of P in steel include various forms of embrittlement which reduce the toughness and ductility The most familiar example in this category is the classic phenomenon of temper embrittlement in heat treated low alloy steels resulting from segregation of phosphorus and other impurities at prior austenite grain boundaries

Ryo Nishimoto Shigeki Fukuchi Guangxia Qi Masami Fukushima Tsutomu Sato Effects of surface Fe(III) oxides in a steel slag on the formation of humic-like dark-colored polymers by the polycondensation of humic precursors Colloids and Surfaces A: Physicochemical and Engineering Aspects 10 1016/jlsurfa 2012 11 032 418 (117-123) (2013)

cleaning effect with a low gas flowrate has also been widely utilized to remove inclusions An electromagnetic stirrer (hereafter EMS) can create an effective stirring in the melt while keeping the whole melt surface covered by the slag layer As a result of this feature the yield of alloy additions and steel cleanliness is high-

Effects of surface Fe(III) oxides in a steel slag on the formation of humic-like dark-colored polymers by the polycondensation of humic precursors Colloids and Surfaces A: Physicochemical and Engineering Aspects 2013 418 117-123 DOI: 10 1016/jlsurfa 2012 11 032

out Fe supply source a mixture of steelmaking slag and compost (humic wood chips) were laid underground in shoreline A certain amount of restoration of sea-weed beds has been confirmed at the locations for several years Quantitative deter-mination of trace amount of Fe in sea water is necessary to validate the effect of iron source

This cover image based on the article number 2000127 by Xiaojun Hu and co-worker shows the competitive oxidation of Fe-C melts by O 2 and CO 2 There are four reactions on the surface of Fe-C melts and the isotope gases of 18 O 2 and 13 CO 2 are used to distinguish the specific roles The mechanisms of competitive reaction can be deduced according to the composition change of various

Mar 26 2018Humic acids have an important impact on the distribution toxicity and bioavailability of hazardous metals in the environment In this study a synthetic humic-like acid (SHLA) was prepared by an abiotic humification process using catechol and glycine as humic precursors and a MnO2 catalyst The effect of physico-chemical conditions (ionic strength from 0 01 to 0 5 M NaNO3 pH from 4 to 8

Steel Slag - Asphalt Concrete INTRODUCTION Steel slag can be processed into a coarse or fine aggregate material for use in dense- and open-graded hot mix asphalt concrete pavements (1 2 3) and in cold mix or surface treatment applications (4) Proper processing of steel slag and special quality-control procedures are extremely important in selecting steel slag for use in asphalt paving mixes

Technical Report UDC 543 51 : 546 72 : 551 463

out Fe supply source a mixture of steelmaking slag and compost (humic wood chips) were laid underground in shoreline A certain amount of restoration of sea-weed beds has been confirmed at the locations for several years Quantitative deter-mination of trace amount of Fe in sea water is necessary to validate the effect of iron source

Jun 21 2015Tannery sludge contained plenty of organic matter and the organic substance stability had direct impact on its derived chars' utilization In this paper the stabilization of tannery sludge and the variation of humic acid-like (HAL) extracted by different methods were investigated in a magnetic stirring reactor under low temperature pyrolysis of 100–400 C

4 Code – The Code of Standard Practice for Steel Buildings and Bridges as published by the American Institute of Steel Construction Column – a structural element that usually carries its primary loads in compression or tension parallel its axis Column Base – usually a thick plate at the bottom of a column through which anchor bolts mechanically connect the column and transfer forces to the

Furthermore it was expected that the characteristic of the structure of humic substances were related to increase iron elution from steelmaking slag The mixture of steelmaking slag and humus materials was more effective not only for increasing iron concentration in seawater and but also for extending the life time of Fe elution

Jan 01 2012BOF steel slag is often classified as waste and is therefore inexpensive to source The purpose of the present study was to examine the effect of carbonated BOF steel slag (hereinafter referred to as "steel slag") on the transformation of humic precursors such as amino acids saccharides and phenols into humic-like acids (HLAs)

Effects of surface Fe(III) oxides in a steel slag on the formation of humic-like dark-colored polymers by the polycondensation of humic precursors Colloids and Surfaces A: Physicochemical and Engineering Aspects 2013 418 117-123

Jun 25 2020The effect of Al addition on the reaction between high‐manganese steel and top slag are experimentally studied After Al addition Al content in steel decreases Si increases greatly and Mn increases compared with that without Al addition Slag compositions change correspondingly Inclusion type transforms from MnO to MgO

Mar 26 2018Humic acids have an important impact on the distribution toxicity and bioavailability of hazardous metals in the environment In this study a synthetic humic-like acid (SHLA) was prepared by an abiotic humification process using catechol and glycine as humic precursors and a MnO2 catalyst The effect of physico-chemical conditions (ionic strength from 0 01 to 0 5 M NaNO3 pH from 4 to 8

Effect of steel slag on structural features of humic substances from compost samples of food processing residue XUEFEI TU Candidate for the Degree of Master Supervisor: Masami Fukushima Division of Sustainable Resources Engineering Introduction It was reported that formation of