Adsorption of copper and zinc from aqueous solutions by using natural clay

Veli, Sevil; Alyüz, Bilge

doi:10.1016/j.jhazmat.2007.04.109

Cited by 446 publications

(252 citation statements)

References 19 publications

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“…Heavy metals released by a number of industrial processes are some of the major pollutants in soil and water resources [2]. Main industrial sources of pollution include electroplating, battery and mining industries discharging a variety of toxic metals such as lead, copper, nickel, zinc and cadmium [3,4]. Heavy metals are toxic and environmentally harmful substances; they have accumulating characteristics in nature as they cannot be degraded.…”

Section: Introductionmentioning

confidence: 99%

“…Heavy metals are toxic and environmentally harmful substances; they have accumulating characteristics in nature as they cannot be degraded. Accumulation of these metals in human body causes brain, skin, pancreas and heart diseases [4,5]. Heavy metal pollution is therefore, a serious problem and this has led to the development of new and improved methods for treating wastewaters [6].…”

Section: Introductionmentioning

confidence: 99%

“…Adsorption, ion exchange, chemical settling and reverse osmosis are the most frequently preferred methods. Among them, adsorption receives considerable interest with high efficiency in heavy metal removal [4]. Different materials have been utilized for heavy metals removal from wastewaters.…”

Section: Introductionmentioning

confidence: 99%

“…Different materials have been utilized for heavy metals removal from wastewaters. They include bacteria [1], algae [3], clay materials [4,11,12], chitosan [13] and animal bi-products [14]. Cellulosic materials that have been used include wheat bran [2], pine sawdust [5], sour orange [6], sugar beet pulp [15] and maize cob [16].…”

Section: Introductionmentioning

confidence: 99%

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Sorption of Heavy Metal Ions (Cu2+ and Cd2+) From Simulated and Industrial Wastewaters Using Sugarcane Biomass

Opeolu

Fatoki

2017

Eco-Tech

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The widespread use of heavy metals in different manufacturing processes has resulted in their presence in the air, soil and aquatic ecosystems. Many manufacturing processes release their effluents into nearby streams and rivers due to non-availability of waste treatment technologies in the developing world. Industrialization has therefore been reported to be a major anthropogenic source of these elements and their compounds waterbodies. Conventional methods that are currently being used in the developed world (such as chemical precipitation, ultra-filtration, reverse osmosis, etc) are expensive and so, unaffordable to small-scale businesses prevalent in developing economies. The need for alternative, cheaper and available technologies therefore, cannot be over-emphasized. This study attempted to remove heavy metals (Cu 2+ and Cd 2+ ) from simulated and industrial (paint and textile) wastewaters using sugarcane biomass. A synthetic resin (Chelex) was used as control. Batch sorption experiments were conducted to assess the influence of contact time, adsorbent dose, adsorbate concentration, pH, agitation speed, temperature and particle size. Increases in the parameters (except particle size) gave corresponding increases in percentage adsorption of both metals. Optimal temperature for adsorption was achieved at 50 o C above which adsorption declined considerably. Experimental data for Cu 2+ and Cd 2+ fitted well into freundlich and langmuir isotherms. In textile effluent, 100% adsorption was achieved for both metals using sugarcane biomass in contrast to 89% and 91% for Cu 2+ and Cd 2+ respectively in chelex, a synthetic resin. Similarly, adsorption was 100% for both metals using the biosorbent. Sugarcane biomass may therefore be utilized for water and wastewater remediation in the developing world. Its biodegradability gives comparative advantage over alternative synthetic and expensive resins since its disposal will be more environmentally friendly.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Sorption of Heavy Metal Ions (Cu2+ and Cd2+) From Simulated and Industrial Wastewaters Using Sugarcane Biomass

Opeolu

Fatoki

2017

Eco-Tech

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“…The environmental protection Agency (EPA) determines the maximum contamination levels of iron and manganese by 0.3 mg/L and 0.4 mg/L respectively, due to their health effects. Various physicochemical methods have been used to remove and adjust the heavy metals in drinking water [19][20][21][22][23] , ion exchange 24 . The adsorption process is one of the most popular technologies due to its effective and economic properties 25,26 .…”

Section: Introductionmentioning

confidence: 99%

Effect of Acid Activation on Adsorption of Iron and Manganese Using Libyan Bentonite Clay

2017

Chem Sci Trans

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Abstract:The pollution by heavy metals currently is becoming a big challenge and a concern for the water quality and also for the environment in general. Some metal ions are toxic even if their concentration is very low and their toxicity increases with accumulation in water and soils. Several industrial wastewater streams may contain heavy metals such as, Pb, Cr, Cd, Ni, Fe, Mn as well as Zn, As, Hg, Cu and Ag. The clays have been extensively utilized for the removal of heavy metals from aqueous solutions. The aim of this research work was to prepare acid activated bentonite clay by using H 2 SO 4 and C 2 H 4 O 2 as acid chemical reagents. The adsorption capacity of natural and acid activated bentonite clay with iron and manganese was also investigated. The removal of two heavy metals was studied at 25 °C. Both modified forms showed higher adsorption efficiency than the natural clay. Moreover, the empirical values were evaluated according to the Freundlich isotherms that are generally used to describe the adsorption processes. The heavy metal-clay adsorption phenomena can be illustrated on the basis of the interaction between surface functional group of silicates (clay) and the metal ions. It is deduced that clay can be used as a low cost adsorbent and locally available for the removal of heavy metals, especially in the developing countries.

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Nanocellulose as a Millennium Material with Enhancing Adsorption Capacities

Mahfoudhi

Boufi

2016

Biodegradable and Biobased Polymers for Environmental and Biomedical Applications

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Adsorption of copper and zinc from aqueous solutions by using natural clay

Cited by 446 publications

References 19 publications

Sorption of Heavy Metal Ions (Cu2+ and Cd2+) From Simulated and Industrial Wastewaters Using Sugarcane Biomass

Sorption of Heavy Metal Ions (Cu2+ and Cd2+) From Simulated and Industrial Wastewaters Using Sugarcane Biomass

Effect of Acid Activation on Adsorption of Iron and Manganese Using Libyan Bentonite Clay

Nanocellulose as a Millennium Material with Enhancing Adsorption Capacities

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