Removal of copper from aqueous solution using red mud

Nadaroğlu, Hayrünnisa; Kalkan, Ekrem; Demir, Nazan

doi:10.1016/j.desal.2009.09.138

Cited by 181 publications

(89 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The Langmuir isotherm model describes mono-layer adsorption on homogeneous surface with no interaction between adjacent adsorbed adsorbates. 17 The Langmuir isotherm is written as:…”

Section: Resultsmentioning

confidence: 99%

Evaluation of Loess Capability for Adsorption of Total Nitrogen (T-N) and Total Phosphorous (T-P) in Aqueous Solution

Kim¹,

Ryoo

Hong³

et al. 2014

Bulletin of the Korean Chemical Society

View full text Add to dashboard Cite

The aim of the present study is to explore the possibility of utilizing loess for the adsorption of total phosphorous (T-P) and total nitrogen (T-N) in water. Batch adsorption studies were performed to evaluate the influences of various factors like initial concentration, contact time and temperature on the adsorption of T-P and T-N. The adsorption data showed that loess is not effective for the adsorption of T-N. However, loess exhibited much higher adsorption capacity for T-P. At concentration of 1.0 mg L, approximately 97% of T-P adsorption was achieved by loess. The equilibrium data were fitted well to the Langmuir isotherm model. The pseudo-second-order kinetic model appeared to be the better-fitting model because it has higher R 2 compared with the pseudo-first-order and intra-particle kinetic model. The theoretical adsorption equilibrium q e,cal from pseudo-second-order kinetic model was relatively similar to the experimental adsorption equilibrium q e,exp . The thermodynamic parameters such as free energy ΔG, the enthalpy ΔH and the entropy ΔS were also calculated.

show abstract

“…The Langmuir isotherm model describes mono-layer adsorption on homogeneous surface with no interaction between adjacent adsorbed adsorbates. 17 The Langmuir isotherm is written as:…”

Section: Resultsmentioning

confidence: 99%

Evaluation of Loess Capability for Adsorption of Total Nitrogen (T-N) and Total Phosphorous (T-P) in Aqueous Solution

Kim¹,

Ryoo

Hong³

et al. 2014

Bulletin of the Korean Chemical Society

View full text Add to dashboard Cite

show abstract

“…Existem diversas alternativas tecnológicas para remoção desses metais em efluentes industriais, como: precipitação, filtração por membrana, troca iônica, eletrólise e adsorção (NADAROGLU et al, 2010). Entre as técnicas utilizadas atualmente para a remoção de metais, destaca-se a adsorção, pois ela tem se mostrado mais eficiente e de fácil manipulação (WANG et al, 2008).…”

Section: Introductionunclassified

“…Entre eles, está a lama vermelha (LV), para a adsorção de metais (GUPTA et al, 2001;LOPEZ et al, 1998;NADAROGLU et al, 2010;SAHU et al, 2011;SANTONA et al, 2006;SMIČIKLAS et al, 2013;2014;VACLAVIKOVA et al, 2005;WANG et al, 2008). Todavia, até o presente momento, não foram encontrados relatos científicos do uso da anidrita como adsorvente de metais.…”

Section: Introductionunclassified

Adsorção de Cd 2+, Ni 2+ e Zn 2+ em soluções aquosas usando anidrita e lama vermelha

Conceição

Pichinelli

Silva

et al. 2017

Eng. Sanit. Ambient.

View full text Add to dashboard Cite

RESUMO Vários minerais e resíduos industriais têm sido estudados para uso como adsorvente, entre eles a lama vermelha e a anidrita. A lama vermelha é um resíduo insolúvel gerado em grande quantidade durante o processamento da bauxita. A anidrita é um sulfato de cálcio (CaSO4) cristalizado sob a forma rômbica e usada como matéria-prima na indústria. Nesta investigação, a capacidade de adsorção de Cd2+, Ni2+ e Zn2+ pela anidrita e pela lama vermelha foi avaliada usando isotermas de adsorção de Langmuir e Freundlich. Os materiais empregados apresentaram adsorção ≥75±1% para todos os metais em soluções aquosas com concentração de 0,5 mmol.25 mL-1. As isotermas baseadas no modelo de Langmuir foram as mais apropriadas para descrever o fenômeno de remoção de Cd2+, Ni2+ e Zn2+ para a anidrita e a lama vermelha, com valores de capacidade máxima de adsorção de 0,47 e 0,51 mmol.g-1 para o Cd2+, 1,18 e 1,56 mmol.g-1 para o Ni2+ e 0,84 e 1,47 mmol.g-1 para o Zn2+, respectivamente. Esses valores foram superiores a outros valores exibidos por materiais empregados como adsorventes descritos em estudos prévios.

show abstract

“…Red mud (RM) is a waste residue formed after the caustic digestion of bauxite during the production of alumina. It has been studied as a coagulant for removal of pollutants, such as AsO 3À 4 [20], H 2 S [21], NO À 3 [22], PO 3À 4 , Cu 2+ [23], Zn 2+ , Ni 2+ , and CrO 2À 4 [24] from aqueous solution, for it is mainly composed of fine-grained particles containing aluminum oxide, iron oxide, silica, titanium oxides, and hydroxides. RM is unsuitable for direct application due to the high dosage, alkalinity, and low efficiency, although it was found to be good phosphorus-removing medium.…”

Section: Desalination and Water Treatmentmentioning

confidence: 99%

Phosphorus removal from domestic sewage by adsorption combined photocatalytic reduction with red mud

Zeng¹,

Xia²,

Dandan³

et al. 2013

Desalination and Water Treatment

View full text Add to dashboard Cite

A B S T R A C TPhosphorus removal from domestic sewage by adsorption combined photocatalytic reduction with raw and modified red mud (RM) was studied in this paper. The results indicated that RM dosage, reaction time, stirring rate, phosphorus concentration, and initial pH of solution (pH i ) were the main factors to effect on phosphorus removal. It was found that the phosphorus removal efficiency of modified red mud (RM-m) under the photocatalytic test conditions was higher than only by adsorption process, while raw red mud (RM-raw) showed no significant difference under the two conditions. With initial phosphorus concentration 8.26 mg/L, reaction time 60 min, stirring rate 200 r/min, under the adsorption and photocatalytic test conditions, the optimum dosage and pH i of both RM-raw and RM-m were 1.8 g/L and 4.0, respectively, and the corresponding phosphorus removal of RM-raw and RM-m were 90.18 and 91.70%, respectively. The optimum amount of RM-m under the two conditions were 1.6 and 1.5 g/L, respectively, the optimal pH i 3.0, correspondingly, the phosphorus removal could reach high up to 94.30 and 99.96%, respectively.

show abstract

Removal of copper from aqueous solution using red mud

Cited by 181 publications

References 43 publications

Evaluation of Loess Capability for Adsorption of Total Nitrogen (T-N) and Total Phosphorous (T-P) in Aqueous Solution

Evaluation of Loess Capability for Adsorption of Total Nitrogen (T-N) and Total Phosphorous (T-P) in Aqueous Solution

Adsorção de Cd 2+, Ni 2+ e Zn 2+ em soluções aquosas usando anidrita e lama vermelha

Phosphorus removal from domestic sewage by adsorption combined photocatalytic reduction with red mud

Contact Info

Product

Resources

About