Removal of Toxic Metal Ions in Water by Photocatalytic Method

Wahyuni, Endang Tri; Aprilita, Nurul Hidayat; Hatimah, Husnul; Wulandari, Asri; Mudasir, Mudasir

doi:10.9734/acsj/2015/13807

Cited by 45 publications

(59 citation statements)

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“…While at pH 9 and 11 the corresponding removal of Cu (II) is 90 and 92%, respectively. The present results agree well with the findings of [17,5].…”

Section: Effect Of Ph On the Photocatalytic Removalsupporting

confidence: 94%

Removal of Cr (VI) and Cu (II) Ions from Synthetic Wastewater by Solar Photocatalytic Reactor

Abid¹,

Mahmood²,

Hamza³

et al. 2018

ETJ

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Abstract-Heavy metal ions in wastewater have promoted increasing concern on environmental and health risks. The present work was devoted to investigate the feasibility of utilizing solar light to degrade Cr (VI) and Cu (II) ions in synthetic wastewater. The effect of the key process parameters on the quality of product was studied by varying the pH (3,5,7,9,and 11), H2O2 (50, 100, 200, and 300 mg/L) and TiO2 loading (0.9, 1.3, and 1.7

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“…While at pH 9 and 11 the corresponding removal of Cu (II) is 90 and 92%, respectively. The present results agree well with the findings of [17,5].…”

Section: Effect Of Ph On the Photocatalytic Removalsupporting

confidence: 94%

Removal of Cr (VI) and Cu (II) Ions from Synthetic Wastewater by Solar Photocatalytic Reactor

Abid¹,

Mahmood²,

Hamza³

et al. 2018

ETJ

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“…This can be attributed to two main factors namely; the precipitation of the metal ions at basic medium and the structure of the photocatalyst at different pH medium. At pH 1 -4, TiO 2 surface is a mixture of TiOH 2 + and TiOH [5]. Increasing the pH from 1 -4 gives an increase in the fraction of TiOH; TiOH is entirely found at pH 5 -8 and from pH 8 -14, the TiO 2 surface is predominantly TiO - [5].…”

Section: Effect Of Ph On Photoreduction Of Metalsmentioning

confidence: 98%

“…At pH 1 -4, TiO 2 surface is a mixture of TiOH 2 + and TiOH [5]. Increasing the pH from 1 -4 gives an increase in the fraction of TiOH; TiOH is entirely found at pH 5 -8 and from pH 8 -14, the TiO 2 surface is predominantly TiO - [5]. At alkaline medium, metal ions precipitate out of the solution to form their respective hydroxides and oxides.…”

Section: Effect Of Ph On Photoreduction Of Metalsmentioning

confidence: 99%

A Study on the Photocatalytic Reduction of Some Metal Ions in Aqueous Solution Using UV- Titanium Dioxide System

Ekwere

Horsfall

Otaigbe

2019

IRJPAC

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“…The removal of heavy metals from water is vital for human life and also for aqueous organism due to their adverse health effects. Several processes such as coagulation/flocculation, oxidation/precipitation, adsorption/biosorption, electrochemical processes, ion-exchange, bioremediation, floatation, evaporation, photocatalysis and membrane technology can be used for the removal of heavy metals (Barakat, 2011;Bestawy et al, 2012;Blöcher et al, 2003;Gunatilake, 2015;Wahyuni et al, 2015). Among these methods, adsorption/biosorption is one of the preferred methods due to its easy application, cost effectiveness, high efficiency, regeneration capacity, easy recovery and sludge-free operation (Amuda et al, 2007;Aremu et al, 2002;Gautam et al, 2014;Kadirvelu et al, 2001;Karadag, 2008;Koubaissy et al, 2014;Vaghetti et al, 2009;Zhang et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Potential Use of Hazelnut Processing Plant Wastes as a Sorbent for the Simultaneous Removal of Multi-Elements From Water

Dede

2019

Mühendislik Bilimleri Ve Tasarım Dergisi

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In this paper, the effects of pH (1.5-8.0), initial element concentration (0.5 to 20 mg L −1 .) and sorbent dosage (1-20 g L-1) were investigated on the potential use of hazelnut processing plant wastes, hazelnut shell (SH) and hazelnut skin (SK), for the simultaneous removal of Al, Cr, Cu, Cd, Pb, As and Fe from water. The surface morphology of the sorbents, elemental analysis, FTIR, SEM-EDS and BET analysis were performed and specific surface areas of the sorbents were found as 0.676 m 2 g-1 (for SH) and 0.768 m 2 g-1 (for SK). The results showed that surfaces of both sorbents are rough, contains pores that allow to entrap heavy metals and functional groups such as carboxylic acid, phenolic compounds, etc. to which the heavy metal ions can attach. While the optimum pH was determined as 5.0 for all elements in both sorbent systems, the percent removal of heavy metal increased with increase in initial heavy metal concentration up to 8 mg L-1 (except cadmium for SH and copper and cadmium for SK). While optimum sorbent dosage was obtained 10 g L-1 for SH sorbent, increase of sorbent amount led to a decrease of the percentage of removal for SK. Adsorption models were used for the mathematical description of adsorption equilibrium and isotherm constants were evaluated at room temperature (22 ± 2 •C). The adsorption equilibrium data were fitted well to Langmuir and Langmuir-Freundlich models in most cases and showed favorable adsorption behavior

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Removal of Toxic Metal Ions in Water by Photocatalytic Method

Cited by 45 publications

References 0 publications

Removal of Cr (VI) and Cu (II) Ions from Synthetic Wastewater by Solar Photocatalytic Reactor

Removal of Cr (VI) and Cu (II) Ions from Synthetic Wastewater by Solar Photocatalytic Reactor

A Study on the Photocatalytic Reduction of Some Metal Ions in Aqueous Solution Using UV- Titanium Dioxide System

Potential Use of Hazelnut Processing Plant Wastes as a Sorbent for the Simultaneous Removal of Multi-Elements From Water

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