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Uptake of Cr3+ from aqueous solution by lignite-based humic acids

Bioresource Technology · Kasım 2008

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YÖKSİS Kayıtları
Uptake of Cr3 from aqueous solution by lignite based humic acids
Bioresource Technology · 2008 SCI
Prof. Dr. GÜLŞİN ARSLAN →
YÖKSİS ISSN Eşleşmesi

Bu dergide (ISSN eşleşmesi) kurumun 12 kaydı bulundu.

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Synthesis of β-cyclodextrin and starch based polymers for sorption of azo dyes from aqueous solutions
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Uptake of Cr3 from aqueous solution by lignite based humic acids
2008 ISSN: 09608524 SCI
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Makale Bilgileri

Dergi Bioresource Technology
ISSN09608524
Yayın TarihiKasım 2008
Cilt / Sayfa99 · 7597-7605
DOI10.1016/j.biortech.2008.02.007
Scopus ID2-s2.0-45449094773
Özet Humic acid (HA) produced from brown coal, a relatively abundant and inexpensive material is currently being investigated as an adsorbent to remove toxic metals from aqueous solution. The influence of five parameters (contact time, solution pH, initial metal concentration, temperature and amount of adsorbent) on the removal at 20 ± 1 °C was studied. HAs were prepared from lignites by using alkaline extraction, sedimentation and acidic precipitation. Adsorption equilibrium was achieved in about 60 min for Cr3+ ion. The Langmuir adsorption isotherm was used to describe observed sorption phenomena. The maximum adsorption capacity of 0.17 mmol for Ilgi{dotless}n (HA1), 0.29 mmol for Beysehir (HA2) and 0.18 mmol Ermenek (HA3) and 0.17 mmol of Cr3+/g for activated carbon (AC) was achieved, respectively at pH of 4.1. More than 84% of Cr3+ was removed by HA2, 54% by HA3 and 51% by HA1 and 50% by AC from aqueous solution. The adsorption was strongly dependent on pH but independent of ionic strength and metal ions. The adsorption of Cr3+ was higher between pH 4.1 and 5.1 for all HAs and maximum sorption was observed at pH 4.1. The rise in temperature caused a slight decrease in the value of the equilibrium constant (Kc) for the sorption of Cr3+ ion. Complex mechanisms including ion exchange, complexation and adsorption and size exclusion are possible for sorption of Cr3+ ion on HAs. © 2008 Elsevier Ltd. All rights reserved.

Yazarlar (2)

1
Gulsin Arslan
2
E. Pehlivan

Anahtar Kelimeler

Adsorption Chromium Humic acid Natural product

Kurumlar

Selçuk Üniversitesi
Selçuklu Turkey
Scimago Dergi (ISSN Eşleşmesi)
Bioresource Technology
Q1
SJR Skoru2,395
H-Index383
YayıncıElsevier Ltd
ÜlkeUnited Kingdom
Bioengineering (Q1)
Environmental Engineering (Q1)
Medicine (miscellaneous) (Q1)
Renewable Energy, Sustainability and the Environment (Q1)
Waste Management and Disposal (Q1)
Dergi sayfasına git

Metrikler

46
Atıf
2
Yazar
4
Anahtar Kelime

Sistemimizdeki Yazarlar

GA
GÜLŞİN ARSLAN
Prof. Dr.

Hızlı Erişim

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