Effect of Non-ionic Reagent Adsorption on Zeta Potential of Fine Coal Particles

Zeki AKTAŞ

Makale detayları

Effect of Non-ionic Reagent Adsorption on Zeta Potential of Fine Coal Particles

Yazarlar:

Zeki AKTAŞ

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Chemistry 2000 Vol.24 Issue 2, pp.117-130

Belge Tipi:

Makale

Yayın Tarihi:

1/2000

Belge Dili:

Türkçe

Document ID (Org No.):

2000730281

Sıklık:

İki Aylık

eISSN:

1303-6130

pISSN:

1300-0527

Özet:

 

The -5 mm size fractions of two low rank British coals were used in zeta potential measurements. The electrophoretic behaviour was described by the Helmholtz-Smoluchowski equation. The non-ionic reagents used for the adsorption tests were of diacetone alcohol and 2-ethyl hexanol. Zeta potentials of both coals at various pHs were significantly different in the absence of the non-ionic reagents. Negligible variations were observed on the zeta potential curves of both coal particles in the presence of the non-ionic reagents used. It was concluded that the pH of coal particles in slurry is a principle parameter controlling the value of zeta potentials. As the zeta potential for Bickershaw coal particles was zero at about pH 5, the point of zero zeta potential was not observed for Rawdon coal particles. This is attributed to the functionality and the extent of oxidation of the coal surface.

 

The -5 mm size fractions of two low rank British coals were used in zeta potential measurements. The electrophoretic behaviour was described by the Helmholtz-Smoluchowski equation. The non-ionic reagents used for the adsorption tests were of diacetone alcohol and 2-ethyl hexanol. Zeta potentials of both coals at various pHs were significantly different in the absence of the non-ionic reagents. Negligible variations were observed on the zeta potential curves of both coal particles in the presence of the non-ionic reagents used. It was concluded that the pH of coal particles in slurry is a principle parameter controlling the value of zeta potentials. As the zeta potential for Bickershaw coal particles was zero at about pH 5, the point of zero zeta potential was not observed for Rawdon coal particles. This is attributed to the functionality and the extent of oxidation of the coal surface.

Makale detayları

Effect of Non-ionic Reagent Adsorption on Zeta Potential of Fine Coal Particles

Yazarlar: Zeki AKTAŞ

Yayıncı: TUBITAK

Dergi: Turkish Journal of Chemistry 2000 Vol.24 Issue 2, pp.117-130

Belge Tipi: Makale

Yayın Tarihi: 1/2000

Belge Dili: Türkçe

Document ID (Org No.): 2000730281

Sıklık: İki Aylık

eISSN: 1303-6130

pISSN: 1300-0527

Sayı

Yazarlar:

Zeki AKTAŞ

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Chemistry 2000 Vol.24 Issue 2, pp.117-130

Belge Tipi:

Makale

Yayın Tarihi:

1/2000

Belge Dili:

Türkçe

Document ID (Org No.):

2000730281

Sıklık:

İki Aylık

eISSN:

1303-6130

pISSN:

1300-0527