Removal capacity of water plant alum sludge for phosphorus in aqueous solutions

Kim, Jae Gon; Kim, Jung Hyun; Moon, Hi-Soo; Chon, Chul-Min; Ahn, Joo Sung

doi:10.3184/095422902782775344

Cited by 64 publications

(10 citation statements)

References 11 publications

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“…Therefore, this will decrease the resistance to mass transfer and increase the mass transfer rate, resulting of easy passage of the adsorbate molecules through the particles and entering easily to the pores. These results agree with that obtained by (Kim et al, 2003a;Maruf et al, 2006, Sarmad, 2009.…”

Section: Fixed Bed Experiments: (I) Effect Of Initial Dye Concentrationsupporting

confidence: 93%

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Removal of Dyes From Textile Effluent by Adsorption Onto Oven Dried Alum Sludge

Salman

2010

jcoeng

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The present study deals with the removal of dyes from the effluent of the state company for cotton textile industries located at Al-Khadmya by using oven dried alum sludge (ODS) as adsorbent. Two different dyes; Direct black and solar brown are studied. Alum sludge was collected from Al-Qadisiya water treatment plant; it was heated in an oven at 105°C for 24 hours, then cooled at room temperature and crushed to produce particle sizes of 1.18-2.36 and 4-4.75 mm. Batch and fixed bed mode were used. In batch experiments the effect of oven dried alum sludge weight on adsorption process and equilibrium isotherm were studied by using 15-125 g/l of oven dried alum sludge for direct black and 15-175 g/l for solar brown, with constant initial dyes concentration of 10 mg/l and constant particle size of 4-4.75 mm. Batch kinetics experiments showed that equilibrium time was about 12-14 days. The three models Freundlich, Langmuir and Freundlich-Langmuir gave good fitting for the adsorption capacity. In the fixed bed isothermal adsorption column, the effect of initial dye concentration (Co), particle size, influent flow rate (Q) and bed depth (H) were studied. The results showed that the oven dried alum sludge was effective in adsorbing dyes with removal efficiency ranged between 90% to 92%.

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Section: Fixed Bed Experiments: (I) Effect Of Initial Dye Concentrationsupporting

confidence: 93%

“…The increase in the removal percentage of each dye is due to the greater availability of adsorption sites or surface area of adsorbent. An identical trend was observed by other investigations (Kim et al, 2003a andMaruf et al, 2006).…”

Section: (Ii) Effect Of Mass Of Oven Dried Alum Sludge On the Adsorpt...supporting

confidence: 91%

Removal of Dyes From Textile Effluent by Adsorption Onto Oven Dried Alum Sludge

Salman

2010

jcoeng

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“…also found that dried alum residuals were a better media for phosphorus adsorption than other waste materials, including blast furnace slag, cement kiln dust and bone char. Kim et al (2003), Dayton et al (2003), and Razali et al (2007) showed that air-dried residuals were suitable for adsorbing phosphorus over a range of pH levels and phosphorus species. Phosphorus removal using air-dried residual solids was also investigated by Ippolito et al (2003).…”

Section: Introductionmentioning

confidence: 97%

“…Other phosphorus adsorption studies commonly used WTRSs with particle sizes of , 1.25 mm to ,2.00 mm (Dayton et al 2003;Kim et al 2003;Dayton & Basta 2005;Makris et al 2005;) for adsorption on WTRSs. Additionally, Huang & Chiswell (2000) found similar phosphate removal when comparing WTRSs of a particle size of 2.8 mm and a particle size of 0.5-1.0 mm.…”

Section: Introductionmentioning

confidence: 99%

Phosphorus adsorption on water treatment residual solids

Gibbons

Mortula

Gagnon

2009

Journal of Water Supply: Research and Technology-Aqua

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The treatment and disposal of water treatment plant residual solids has become an increasingly important environmental priority for drinking water utilities. This study examines water treatment residual solids (WTRSs) from four North American water treatment plants to determine the role that coagulant types play in phosphate adsorption by the residual solids. In total, two alum residual solids (one solid from a plant that has a raw water with low alkalinity and one solid from a plant that has a raw water with high alkalinity), one lime residual solid and one ferric residual solid were used in batch adsorption experiments with deionized water at a pH of 6.2^0.2 and secondary municipal wastewater effluent at a pH of 6.8. Langmuir isotherm modeling showed that ferric residuals had the highest adsorptive capacity for phosphate (Q max ¼ 2,960 mg/kg), followed by lime (Q max ¼ 1,390 mg/kg) and alum (Q max ¼ 1,110 mg/kg and 1,030 mg/kg) for adsorption experiments with P-spiked deionized water. Of the two alum residuals, the residual with a higher weight percent of metal oxides had a higher adsorptive capacity. The ferric residuals were less affected by competing species in the wastewater effluent, while the lime and alum residuals had a higher rate of phosphate removal from the deionized water compared to the wastewater effluent. Overall, ferric water treatment residuals were the best adsorbent for phosphate adsorption, followed by lime and alum residuals.

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“…At lower pH, the phosphate ion adsorption performance would be restricted, since H 3 PO 4 is not active in ion exchange with hydroxyl groups on the PET20 surface. In contrast, at higher pH, the competition between OH − and the phosphate ion adsorption was strong, indicated by a decreased amount of adsorbed phosphate with increasing solution pH [3,56].…”

Section: Effect Of Solution Ph On the Adsorption Of Phosphate Ions Onmentioning

confidence: 98%

Granulation of Cobalt-containing Nickel Hydroxide with Polyethylene Terephthalate and its Phosphate Ion Adsorption Capability

Ogata

Toda²,

Otani³

et al. 2017

J. of Wat. & Envir. Tech.

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In this study, nickel hydroxide containing cobalt as a co-precipitation hydroxide (NiCo91) was granulated with a binder (polyethylene terephthalate, PET) and characterized (scanning electron microscopy, specific surface area, amount of hydroxyl groups, and surface pH). In addition, the phosphate ion adsorption capability of the granulated adsorbent was evaluated by examining the effects of contact time and solution pH, analysis of adsorption isotherms, and a desorption study. It was confirmed that NiCo91 calcined at 270°C could be granulated using a PET binder. The specific surface area (32 m 2 /g) and hydroxyl group amount (0.19 mmol/g) of PET20S (20% binder content and < 500 μm particle diameter) were greater than those of other adsorbents. The amount of the adsorbed phosphate ions was greater for PET20S than that for other adsorbents, indicating that the adsorbent surface properties were related to the adsorption of phosphate ions. The phosphate ions adsorbed onto PET20S could be desorbed by different concentrations of sodium hydroxide, and at least three-fold increase in adsorption/desorption onto PET20S could be obtained. The results show that PET20S is highly promising as a renewable adsorbent of phosphate ions from aqueous solutions.

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Removal capacity of water plant alum sludge for phosphorus in aqueous solutions

Cited by 64 publications

References 11 publications

Removal of Dyes From Textile Effluent by Adsorption Onto Oven Dried Alum Sludge

Removal of Dyes From Textile Effluent by Adsorption Onto Oven Dried Alum Sludge

Phosphorus adsorption on water treatment residual solids

Granulation of Cobalt-containing Nickel Hydroxide with Polyethylene Terephthalate and its Phosphate Ion Adsorption Capability

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