Adsorption of anionic and cationic dyes on biochars, produced by hydrothermal  carbonization of waste biomass: effect of surface functionalization and ionic  strength

Ezgi ÇAĞLAR; Yusuf Osman DONAR; Ali SINAĞ; İbrahim BİROĞUL; Selva BİLGE; Kivanç AYDINCAK; Oleksii PLIEKHOV

Makale detayları

Adsorption of anionic and cationic dyes on biochars, produced by hydrothermal carbonization of waste biomass: effect of surface functionalization and ionic strength

Yazarlar:

Ezgi ÇAĞLAR | Yusuf Osman DONAR | Ali SINAĞ | İbrahim BİROĞUL | Selva BİLGE | Kivanç AYDINCAK | Oleksii PLIEKHOV

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Chemistry 2018 Vol.42 Issue 1, pp.86-99

Belge Tipi:

Makale

Yayın Tarihi:

1/2018

Belge Dili:

Türkçe

Document ID (Org No.):

2000726242

Sıklık:

İki Aylık

eISSN:

1303-6130

pISSN:

1300-0527

Özet:

 

In this work, surface-functionalization agents and various salts as auxiliaries were used to improve the  adsorption capacity of biochars produced via hydrothermal carbonization of glucose, cellulose, and hazelnut shell. The  effect of surface functionalization with different acids and bases as well as neutral salts on the adsorption of methylene  blue and methyl orange was investigated using Boehm titration, Fourier transform infrared spectroscopy, and X-ray  photoelectron spectroscopy techniques. Surface functionalization of biochars leads to an increase in the number of  oxygen-containing functional groups on the surface, thus increasing the adsorption capacity. To probe the influence of  ionic strength on the adsorption process, three auxiliaries, namely potassium chloride, cetyltrimethylammonium bromide,  and sodium bicarbonate, were examined. The increase in total electrolyte concentration signicantly affected the pH of  the solution and as a result electrostatic interactions between dyes and biochars. Dye adsorption capacities reached 234.57  mg/g for methylene blue and 306.13 mg/g for methyl orange in the presence of cellulose-based and NaOH-functionalized  biochar and glucose-based H2SO4-functionalized biochar, respectively.

Makale detayları

Adsorption of anionic and cationic dyes on biochars, produced by hydrothermal carbonization of waste biomass: effect of surface functionalization and ionic strength

Yazarlar: Ezgi ÇAĞLAR | Yusuf Osman DONAR | Ali SINAĞ | İbrahim BİROĞUL | Selva BİLGE | Kivanç AYDINCAK | Oleksii PLIEKHOV

Yayıncı: TUBITAK

Dergi: Turkish Journal of Chemistry 2018 Vol.42 Issue 1, pp.86-99

Belge Tipi: Makale

Yayın Tarihi: 1/2018

Belge Dili: Türkçe

Document ID (Org No.): 2000726242

Sıklık: İki Aylık

eISSN: 1303-6130

pISSN: 1300-0527

Sayı

Yazarlar:

Ezgi ÇAĞLAR | Yusuf Osman DONAR | Ali SINAĞ | İbrahim BİROĞUL | Selva BİLGE | Kivanç AYDINCAK | Oleksii PLIEKHOV

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Chemistry 2018 Vol.42 Issue 1, pp.86-99

Belge Tipi:

Makale

Yayın Tarihi:

1/2018

Belge Dili:

Türkçe

Document ID (Org No.):

2000726242

Sıklık:

İki Aylık

eISSN:

1303-6130

pISSN:

1300-0527