Phase separation of borosilicate glass containing phosphorus

Ohtsuki, Y.; Sakida, Shinichi; Benino, Yasuhiko; Nanba, Tokuro

doi:10.1088/1757-899x/18/11/112022

Cited by 6 publications

(3 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The final product contains sufficiently low heavy metal content, and can be used as conventional chemical P fertilizer. While P recovery from iron slag is still a developing methodology [14], is it hoped that iron slag will be an important P resource because of its large P budget.…”

Section: Amount Of P In Non-utilized Resourcesmentioning

confidence: 99%

Phosphorus conventional use, reduction potential, and possibility of self-sufficiency during food and feed production in Japan

Mishima

Matsubae²,

Kimura

et al. 2013

WIT Transactions on Ecology and the Environment

View full text Add to dashboard Cite

Japanese agriculture uses huge amounts of phosphorus (P) for food and feed production. As a result, soil P fertility (soil test P, measured by the Truog method) has increased in the past 40 years. Because P is a limited, exhaustible resource, and agricultural P use should based on soil test P, effective use of P in agriculture is important. In this study, we estimated agricultural P flow and the possibility of chemical fertilizer reduction based on soil test P from one region's reduced input guidelines in 2000. Based on our estimation, chemical fertilizer application levels do not differ significantly over different soil test P levels. If chemical fertilizer application were cut based on soil test P, application could be reduced from 61.6 kg P ha -1 to 25.8 kg P ha -1 on average. Next, we estimated the non-utilized P resources in Japan. We focused on non-utilized livestock waste, food refuse, sewage sludge and iron slag as a promising P resource. The total P in these resources was estimated at 237 Gg P, comparable to conventional chemical fertilizer applications (276 Gg P), and enough self-sufficiency when chemical fertilizer application is reduced based on soil test P (115 Gg P). Reduction of the environmental impact (eutrophication potential) by reduced chemical fertilizer input would be from 973 to 776 in terms of index value and utilization of non-utilized P resource would be more worth for environmental issue.

show abstract

Section: Amount Of P In Non-utilized Resourcesmentioning

confidence: 99%

Phosphorus conventional use, reduction potential, and possibility of self-sufficiency during food and feed production in Japan

Mishima

Matsubae²,

Kimura

et al. 2013

WIT Transactions on Ecology and the Environment

View full text Add to dashboard Cite

show abstract

“…In particular, Japan completely depends on imports for phosphorous resources, and hence phase separation is expected to be used as a phosphorous recycling method. The author's research group is currently investigating the distribution of phosphorous during the phase separation of borosilicate glasses, and it is revealed that phosphorous distribution is greatly influenced by Al 24) and Ti. 25) It is consequently suggested that the P, Ti and Al distributions shown in Fig.…”

Section: Development Of Chemical Recycling Process Of Wastesmentioning

confidence: 99%

Characterization of glasses based on basicity

Nanba

2011

J. Ceram. Soc. Japan

View full text Add to dashboard Cite

Basicity is defined as an electron donating ability of a material, and hence, an oxide material containing oxide ions with high electron density is regarded to be in high basicity. It has been demonstrated that basicity can be evaluated by binding energy of core level electrons, which is measured by X-ray photoelectron spectroscopy. Based on the experimental results obtained from a large number of oxide glasses, correlations among basicity, O1s binding energy, structure and properties of glasses have been investigated. In the present paper, some of the research outcomes are introduced.

show abstract

“…In the previous study, 4) phosphorus distribution associated with phase separation was investigated by using a simplified ternary Na 2 OB 2 O 3 SiO 2 system, and the effect of Al 2 O 3 addition was also examined. As the result, it was revealed that Al 2 O 3 promoted distribution of phosphorus into SiO 2 -rich phase.…”

Section: Introductionmentioning

confidence: 99%

Effect of additives on the distribution of phosphorus associated with phase separation of borosilicate glasses

Benino

Ohtsuki

Sakida

et al. 2012

J. Ceram. Soc. Japan

View full text Add to dashboard Cite

Sodium borosilicate glasses containing phosphorus were prepared, and the effect of Al 2 O 3 and TiO 2 addition on the distribution behavior of phosphorus atoms associated with the phase separation was investigated. After heat treatment, a phase separation by the spinodal decomposition was commonly confirmed by SEM observation. In the additive-free sample, phosphorus was preferentially distributed into B 2 O 3 -rich phase after the phase separation, and after adding Al 2 O 3 or TiO 2 , the amount of phosphorus distributed into SiO 2 -rich phase increased. It was also suggested that TiO 2 had a stronger influence on the phosphorus distribution into SiO 2 -rich phase than Al 2 O 3 . 31 P MAS-NMR revealed that most of phosphorus atoms in the additivefree glass were present in PO 4 units consisting of two terminal oxide ions, and the terminal oxide ions decreased and increased after the additions of Al 2 O 3 and TiO 2 , respectively. It was suggested that this structural change brought about a change in the distribution of phosphorus.

show abstract

Phase separation of borosilicate glass containing phosphorus

Cited by 6 publications

References 5 publications

Phosphorus conventional use, reduction potential, and possibility of self-sufficiency during food and feed production in Japan

Phosphorus conventional use, reduction potential, and possibility of self-sufficiency during food and feed production in Japan

Characterization of glasses based on basicity

Effect of additives on the distribution of phosphorus associated with phase separation of borosilicate glasses

Contact Info

Product

Resources

About