Removal of Cadmium (II) by Low Cost Adsorbents

Bhattacharya, A. K.; Venkobachar, C.

doi:10.1061/(asce)0733-9372(1984)110:1(110)

Cited by 393 publications

(156 citation statements)

References 13 publications

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“…The rate constants were determined by considering the linear portion of adsorption kinetics data as entire data range did not fall in a straight line. Similar trend was observed by other researchers while studying cadmium adsorption onto various low-cost adsorbents [9] and biosorbents. [10] Results show that the adsorption rate varied considerably with grain size of waste activated carbon employed.…”

Section: Kinetic Studysupporting

confidence: 88%

Performance Evaluation of Waste Activated Carbon on Atrazine Removal from Contaminated Water

Ghosh

Philip

2005

Journal of Environmental Science and Health, Part B

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In this study, the potential of spent activated carbon from water purifier (Aqua Guard, India) for the removal of atrazine (2 chloro-4 ethylamino-6-isopropylamino-1, 3, 5 triazine) from wastewaters was evaluated. Different grades of spent activated carbon were prepared by various pretreatments. Based on kinetic and equilibrium study results, spent activated carbon with a grain size of 0.3-0.5 mm and washed with distilled water (designated as WAC) was selected for fixed column studies. Batch adsorption equilibrium data followed both Freundlich and Langmuir isotherm. Fixed bed adsorption column with spent activated carbon as adsorbent was used as a polishing unit for the removal of atrazine from the effluent of an upflow anaerobic sludge blanket (UASB) reactor treating atrazine bearing domestic wastewater. Growth of bacteria on the surface of WAC was observed during column study and bacterial activity enhanced the effectiveness of adsorbent on atrazine removal from wastewater.

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Section: Kinetic Studysupporting

confidence: 88%

Performance Evaluation of Waste Activated Carbon on Atrazine Removal from Contaminated Water

Ghosh

Philip

2005

Journal of Environmental Science and Health, Part B

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“…A number of 250 ml bottles were filled with 100 ml of P solutions at four different P concentrations (5,15,30, and 60 mg L -1 ), and 1 g of the alum sludge was added to each bottle. The mixture was then agitated at 200 rpm on the rotary shaker.…”

Section: Kinetics Of P-adsorption By the Alum Sludgementioning

confidence: 99%

Equilibrium and kinetic analysis of phosphorus adsorption from aqueous solution using waste alum sludge

Babatunde

Zhao

2010

Journal of Hazardous Materials

127

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Excess phosphorus (P) in wastewaters promotes eutrophication in receiving waterways. A cost-effective method such as use of novel low-cost adsorbents for its adsorptive removal would significantly reduce such impacts. Using batch experiments, the intrinsic dynamics of P adsorption by waste alum sludge (an inevitable by-product of drinking water treatment plants)was examined. Different models of adsorption were used to describe equilibrium and kinetic data, calculate rate constants and determine the adsorption capacity. demonstrates that alum sludge -hitherto thought of as undesirable waste, can be used as novel adsorbent for P removal from wastewater through various applications, thus offsetting a portion of the disposal costs while at the same time improving water quality in sensitive watersheds.

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“…Those include bacteria [1], yeasts [2], bark [3], fungi [4], agricultural by-products [5], coconut shell [6], marine algae [7], moss peat [8] and aquatic mosses [9,10].…”

Section: Introductionmentioning

confidence: 99%

Cadmium(II) and zinc(II) adsorption by the aquatic moss Fontinalis antipyretica: effect of temperature, pH and water hardness

2004

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The biosorption of cadmium(II) and zinc(II) ions onto dried Fontinalis antipyretica, a widely spread aquatic moss, was studied under different values of temperature, initial pH and water hardness. The equilibrium was well described by Langmuir adsorption isotherms. Maximum biosorption capacity of cadmium was independent on temperature and averaged 28.0 mg g À1 moss, whereas for zinc, capacity increased with temperature, from 11.5 mg g À1 moss at 5 C to 14.7 mg g À1 moss at 30 C. Optimum adsorption pH value was determined as 5.0 for both metal ions. Cadmium uptake was unaffected by the presence of calcium ions, but zinc sorption was improved when water hardness increased from 101.1 to 116.3 mg CaCO 3 l À1 . Inversely, as hardness increases, the competition with calcium ions strongly reduces the affinity of the biosorbent for zinc.

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Removal of Cadmium (II) by Low Cost Adsorbents

Cited by 393 publications

References 13 publications

Performance Evaluation of Waste Activated Carbon on Atrazine Removal from Contaminated Water

Performance Evaluation of Waste Activated Carbon on Atrazine Removal from Contaminated Water

Equilibrium and kinetic analysis of phosphorus adsorption from aqueous solution using waste alum sludge

Cadmium(II) and zinc(II) adsorption by the aquatic moss Fontinalis antipyretica: effect of temperature, pH and water hardness

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