Immobilisation of TiO<sub>2</sub><b>-</b>nanoparticles on sewage sludge and their adsorption for cadmium removal from aqueous solutions

El-Deen, S. E. A. Sharaf; Zhang, Fu-Shen

doi:10.1080/17458080.2015.1047419

Cited by 37 publications

(8 citation statements)

References 51 publications

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“…The XRD pattern of SSC indicated the structure of activated carbon with some graphite. The other peaks in the XRD pattern could be attributed to the silica and other minerals in the SSC structure (Sharaf El‐Deen & Zhang, ; Tu, Tian, Kong, & Xiong, ). As shown, the characteristic peaks of ZnO and TiO 2 nanoparticles in the XRD pattern of SSC/TiO 2 /ZnO were gradually decreased which could be attributed to the low agglomeration of TiO 2 /ZnO nanocomposite on the SSC surface as described by SEM image of SSC/TiO 2 /ZnO nanocomposite.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of sewage sludge‐based carbon/TiO₂/ZnO nanocomposite adsorbent for the removal of Ni(II), Cu(II), and chemical oxygen demands from aqueous solutions and industrial wastewater

Khosravi

Mehrdadi

Bidhendi

et al. 2019

Water Environment Research

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The removal of heavy metal ions and organic materials from wastewater due to their toxicity is necessary. In the present study, the titanium dioxide/zinc oxide (TiO2/ZnO) nanocomposite has been coated on the sewage sludge carbon (SSC) surface and its application was investigated for the adsorption of Ni(II), Cu(II), and chemical oxygen demands (COD) reduction from aqueous solutions and industrial wastewaters in Eshtehard, Iran. The effect of adsorption parameters in a single system such as TiO2/ZnO ratio, TiO2/ZnO concentration, pH, adsorbent dosage, contact time, ionic strength, temperature, and initial concentrations of Ni(II), Cu(II), and COD was investigated on the adsorption capacity of synthesized SSC/TiO2/ZnO adsorbent. The pseudo‐second order and Redlich–Peterson isotherm models were best described the kinetic and equilibrium data of Ni(II), Cu(II), and COD sorption. The maximum monolayer sorption capacities of Ni(II), Cu(II), and COD were found to be 62.3, 75.1, and 1,120.3 mg/g, respectively. The central composite design was used to investigate the interaction effects of pH and initial concentrations of Ni(II), Cu(II), and COD on the simultaneous removal of Ni(II), Cu(II), and COD from aqueous solutions in a ternary system. The potential of synthesized SSC/TiO2/ZnO adsorbent was investigated for Ni(II), Cu(II), and COD adsorption from industrial wastewaters of Iran. Practitioner points The novel sewage sludge carbon/TiO2/ZnO adsorbent was synthesized. Adsorption of Ni(II), Cu(II), and chemical oxygen demands (COD) from industrial wastewaters was investigated. Maximum Ni(II), Cu(II), and COD sorption capacities were 62.3, 75.1, and 1,120.3 mg/g. Simultaneous removal of Ni(II), Cu(II), and COD was investigated in a ternary system.

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Section: Resultsmentioning

confidence: 99%

Synthesis of sewage sludge‐based carbon/TiO₂/ZnO nanocomposite adsorbent for the removal of Ni(II), Cu(II), and chemical oxygen demands from aqueous solutions and industrial wastewater

Khosravi

Mehrdadi

Bidhendi

et al. 2019

Water Environment Research

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“…Several researches prepared activated carbon in TiO 2 /activated carbon composite from different raw materials and applied it for the removal of methyl orange dye and Cd. Sharaf El-Deen & Zhang [ 23 ] prepared TiO 2 /sewage sludge (TS) as biomass material and found that the adsorption removal of Cd was 74%. Modified fly ash was used for the preparation of TiO 2 /activated carbon and used for the removal of 82% Cd from polluted solution [ 18 ].…”

Section: Resultsmentioning

confidence: 99%

“…TiO 2 /sludge exhibited a high photocatalytic oxidation efficiency (more than 90%) of tartrazine compared with naked TiO 2 (less than 20%) due to the synergy effect of sewage sludge.Several researches prepared activated carbon in TiO 2 /activated carbon composite from different raw materials and applied it for the removal of methyl orange dye and Cd. Sharaf El-Deen & Zhang[23]…”

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confidence: 99%

Adsorption and photocatalysis for methyl orange and Cd removal from wastewater using TiO ₂ /sewage sludge-based activated carbon nanocomposites

2017

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Nanocomposite TiO2/ASS (TiO2 nanoparticle coated sewage sludge-based activated carbon) was synthesized by the sol-gel method. The changes in surface properties of the TiO2/ASS nanocomposite were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and X-ray fluorescence. The prepared TiO2/ASS nanocomposite was applied for simultaneous removal of methyl orange dye (MO) and Cd2+ from bi-pollutant solution. The factors influencing photocatalysis (TiO2 : ASS ratios, initial pollutant concentrations, solution pH, nanocomposite dosage and UV irradiation time) were investigated. The results revealed that high removal efficiency of methyl orange dye (MO) and Cd2+ from bi-pollutant solution was achieved with TiO2/ASS at a ratio (1 : 2). The obtained results revealed that degradation of MO dye on the TiO2/ASS nanocomposite was facilitated by surface adsorption and photocatalytic processes. The coupled photocatalysis and adsorption shown by TiO2/ASS nanocomposite resulted in faster and higher degradation of MO as compared to MO removal by ASS adsorbent. The removal efficiency of MO by ASS adsorbent and TiO2/ASS (1 : 2) nanocomposite at optimum pH value 7 were 74.14 and 94.28%, respectively, while for Cd2+ it was more than 90%. The experimental results fitted well with the second-order kinetic reaction.

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“…Other studies reported the photocatalytic degradation of dyes using TiO 2 /solid support composites (Chiou et al., 2008; Mahmoodi & Arami, 2009; Nikazar et al., 2008; Rashed et al., 2017; Sharaf El‐Deen & Zhang, 2016). Rhodamine‐B (RB) is one of the water‐soluble xanthines class dyes.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic degradation of Rhodamine‐B dye using composite prepared from drinking water treatment sludge and nano TiO₂

Rashed

Taher

Fadlalla³

2021

Environmental Quality Mgmt

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In this study, composite Sludge adsorbent (ASN)/TiO2 was prepared from the drinking water treatment sludge ASN (activated with nitric acid) and nanoparticle TiO2 by the sol‐gel method, followed by using it to remove Rhodamine‐B (RB) dye from polluted water. The prepared composite was characterized by transmission electron microscopy, X‐ray fluorescence spectrometry, X‐ray diffraction, and surface area N2‐adsorption/desorption analysis. Photocatalytic degradation of RB dye was investigated by UV and UV/hydrogen peroxide (H2O2) irradiation. Parameters such as composite dosage, initial dye concentration, UV irradiation time, and solution pH were applied to obtain the optimum conditions for high RB dye degradation. The results showed that the highest RB dye degradation (96.7%) was using a 2:1 ratio of ASN/TiO2. High degradation of dye was achieved within 4 h at pH 7, 50 ppm dye concentration, and 0.125 g/50 ml composite dose. The maximum degradation of RB dye using the prepared composite under UV irradiation with H2O2 (99.85%) was higher than that with UV irradiation only (96.85%). The rate of the dye photocatalytic degradation followed the first‐order kinetics.

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Immobilisation of TiO₂-nanoparticles on sewage sludge and their adsorption for cadmium removal from aqueous solutions

Cited by 37 publications

References 51 publications

Synthesis of sewage sludge‐based carbon/TiO₂/ZnO nanocomposite adsorbent for the removal of Ni(II), Cu(II), and chemical oxygen demands from aqueous solutions and industrial wastewater

Synthesis of sewage sludge‐based carbon/TiO₂/ZnO nanocomposite adsorbent for the removal of Ni(II), Cu(II), and chemical oxygen demands from aqueous solutions and industrial wastewater

Adsorption and photocatalysis for methyl orange and Cd removal from wastewater using TiO ₂ /sewage sludge-based activated carbon nanocomposites

Photocatalytic degradation of Rhodamine‐B dye using composite prepared from drinking water treatment sludge and nano TiO₂

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Immobilisation of TiO2-nanoparticles on sewage sludge and their adsorption for cadmium removal from aqueous solutions

Cited by 37 publications

References 51 publications

Synthesis of sewage sludge‐based carbon/TiO2/ZnO nanocomposite adsorbent for the removal of Ni(II), Cu(II), and chemical oxygen demands from aqueous solutions and industrial wastewater

Synthesis of sewage sludge‐based carbon/TiO2/ZnO nanocomposite adsorbent for the removal of Ni(II), Cu(II), and chemical oxygen demands from aqueous solutions and industrial wastewater

Adsorption and photocatalysis for methyl orange and Cd removal from wastewater using TiO 2 /sewage sludge-based activated carbon nanocomposites

Photocatalytic degradation of Rhodamine‐B dye using composite prepared from drinking water treatment sludge and nano TiO2

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Immobilisation of TiO₂-nanoparticles on sewage sludge and their adsorption for cadmium removal from aqueous solutions

Synthesis of sewage sludge‐based carbon/TiO₂/ZnO nanocomposite adsorbent for the removal of Ni(II), Cu(II), and chemical oxygen demands from aqueous solutions and industrial wastewater

Synthesis of sewage sludge‐based carbon/TiO₂/ZnO nanocomposite adsorbent for the removal of Ni(II), Cu(II), and chemical oxygen demands from aqueous solutions and industrial wastewater

Adsorption and photocatalysis for methyl orange and Cd removal from wastewater using TiO ₂ /sewage sludge-based activated carbon nanocomposites

Photocatalytic degradation of Rhodamine‐B dye using composite prepared from drinking water treatment sludge and nano TiO₂