Metal ion removal from aqueous solution using physic seed hull

Mohammad, Masita; Maitra, Saikat; Ahmad, Naveed; Bustam, Mohammad Azmi; Sen, Tushar Kanti; Dutta, Binay K.

doi:10.1016/j.jhazmat.2010.03.014

Cited by 102 publications

(58 citation statements)

References 42 publications

(76 reference statements)

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“…C e , is same as above; b, K, and n are isotherm constants obtained from the slopes and intercepts. The Dubinin-Radushkevich isotherm which describes adsorption on both homogenous and heterogeneous surfaces [24] is shown in the following equation:…”

Section: Biosorption Proceduresmentioning

confidence: 99%

“…This was determined by equilibrating the sorbent-sorbate mixture containing 500 mg/L of Pb 2+ at pH values between 3 and 7. pH is an important biosorption parameter because it affects the activities of functional groups present on the surface of the biosorbent which are responsible for adsorption, and affects competitive adsorption of ions to sorption sites [7,24,26]. Thus, various biosorbents have various optimum sorption pH for different metals.…”

Section: Effect Of Ph On Adsorptionmentioning

confidence: 99%

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Mechanism of Pb2+ removal from aqueous solution using a nonliving moss biomass

Olu-Owolabi

Diagboya

Ebaddan

2012

Chemical Engineering Journal

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This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues.Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited. a b s t r a c tBiosorption of lead (II) ions onto raw biomass of the moss plant Barbula lambarenensis has been studied using the batch equilibrium adsorption method. Equilibrium isotherms, kinetics and thermodynamic parameters have been evaluated. The FT-IR analysis showed that likely functional groups responsible for the adsorption are carboxyl, carbonyl, amides and hydroxyl groups. The pH for optimum adsorption is 5.0. Equilibrium data fit well to the Langmuir isotherm. The estimated maximum adsorption capacity was found to be 62.50 mg/g at 298 K and 90.91 mg/g at 323 K. The kinetic data obeyed the pseudo-second-order model. The free energy changes (DG o ) are positive and the reaction is exothermic with decreased randomness at the sorbent/solution interface. Taking into account its good adsorption capacity, ease of sample treatment, as well as availability, the biomass of B. lambarenensis is a promising cost-effective biosorbent for Pb 2+ removal from aqueous environment.

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Section: Biosorption Proceduresmentioning

confidence: 99%

Section: Effect Of Ph On Adsorptionmentioning

confidence: 99%

Mechanism of Pb2+ removal from aqueous solution using a nonliving moss biomass

Olu-Owolabi

Diagboya

Ebaddan

2012

Chemical Engineering Journal

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“…Various physical, chemical and biological methods, including adsorption, biosorption coagulation and flocculation, advanced oxidation, ozonation, membrane filtration and liquid-liquid extraction, have been widely used for the treatment of dye-bearing wastewater [2,[6][7][8]. Adsorption is a very effective separation technique and is considered to be superior to other techniques for water treatment in terms of initial cost, simplicity of design, ease of operation and resilience to toxic substances [9,10]. Although adsorption technologies are well established, a significant limitation is the cost of adsorbent materials.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of methylene blue from aqueous solution using untreated and treated (Metroxylon spp.) waste adsorbent: equilibrium and kinetics studies

et al. 2016

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Background (Metroxylon spp.) waste is an inexpensive and abundantly available material with the characteristics of a good adsorbent for treating dye from wastewater. We studied the effectiveness of alkali and acid modification in enhancing the adsorption capacity of sago waste. The untreated and treated adsorbent was characterized by FTIR, elemental analysis and BET surface area. The capacity of each adsorbent to adsorb MB was evaluated at different pH values, adsorbent dosage and initial dye concentrations and contact time. Results According to the results obtained, alkali treatment more than doubled the sorption capacity of sago waste by increasing the porosity, surface area and number of adsorption sites. The alkali-treated material also adsorbed significantly more than many known biosorbents. The effects of the initial concentration of methylene blue, solution pH and adsorbent dosage on methylene blue removal are reported. Equilibrium data were best represented by the Langmuir isotherm model with adsorption capacities of 83.5, 212.8 and 36.82 mg/g for untreated, potassium hydroxide-treated and phosphoric acid-treated sago wastes, respectively. The kinetics of adsorption were best described by a pseudo-second-order model (R 2 = 0.999). Conclusions The alkali treatment of sago waste demonstrates the use of a low-cost agricultural waste and a simple modification process to produce an effective adsorbent for removing cationic dye from wastewater.

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“…All of these methods have their own advantages and disadvantages. However, adsorption process is considered to be a very effective physical separation technique in wastewater treatment in terms of simplicity of design, ease of operation and insensitivity to toxic substances provided adsorbents are locally available with little or no value [4][5][6][7]. The current research seeks various cost effective sustainable alternative to commercial activated carbon adsorbents therefore, research has been grown into this direction since last decades.…”

Section: Introductionmentioning

confidence: 99%

Review on Dye Removal from Its Aqueous Solution into Alternative Cost Effective and Non-Conventional Adsorbents

Dawood¹,

Sen

2013

Journal of Chemical and Process Engineering

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Dyes are complex organic compounds which are used by various industries to colour their products. These dyes are purged from various industrial sources such as textile, cosmetic, paper, leather, rubber and printing industries. Wastewater effluents contain dyes which may cause potential hazards to the environment. Some of these dyes are toxic, carcinogenic and can cause skin and eye irritation. Therefore, many researchers have been studied the effectiveness of dyes removal from aqueous solution by different separation methods. Different separation techniques have been used for the treatment of dye-bearing wastewater such as adsorption, coagulation/flocculation, advanced oxidation technologies, ozonation, and membrane-filtration, aerobic and anaerobic degradation. All dye separation techniques have their own limitation in terms of design, operation efficiency and total cost. This review paper provides extensive literature information about dyes, its classification and toxicity together with various treatment methods into dye adsorption characteristics of several non-conventional cost effective sustainable adsorbents. The mechanism and the effects of various physio-chemical process parameters on dye adsorption are presented here.

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Metal ion removal from aqueous solution using physic seed hull

Cited by 102 publications

References 42 publications

Mechanism of Pb2+ removal from aqueous solution using a nonliving moss biomass

Mechanism of Pb2+ removal from aqueous solution using a nonliving moss biomass

Adsorption of methylene blue from aqueous solution using untreated and treated (Metroxylon spp.) waste adsorbent: equilibrium and kinetics studies

Review on Dye Removal from Its Aqueous Solution into Alternative Cost Effective and Non-Conventional Adsorbents

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