Removal of Zn(II) ions from aqueous media on thermal activated sawdust

Nacu, Gabriela; Bulgariu, Dumitru; Popescu, Maria-Cristina; Harja, Maria; Juravle, Doru Toader; Bulgariu, Laura

doi:10.1080/19443994.2015.1128366

Cited by 16 publications

(6 citation statements)

References 32 publications

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“…Thus, the fly ash from power plants may be recycled in various fields as stabilization of soils, fertilization of soil, and production of geopolymers. Some works reported its efficient use as a cheap adsorption material for water purification [38].…”

Section: Adsorbents For Pollutant Removalmentioning

confidence: 99%

Eco-friendly Nano-adsorbents for Pollutant Removal from Wastewaters

Harja¹,

Ciobanu²

2020

Handbook of Nanomaterials and Nanocomposites for Energy and Environmental Applications

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Major changes of the environment are caused by the presence of pollutants in air, soil, and wastewaters. From these, a major attention is accorded to the industrial wastewaters, because can contain simultaneous different types of pollutants such as heavy metals, anions, dyes, phenols, pesticides, drugs, etc. For wastewater treatment, consecrated methods such as adsorption, photocatalysis, membrane separation, etc. can be used, adsorption being considered one of the most favorable techniques. In the last years, an increase in interest was observed in nanoadsorbent materials with low cost. Ecofriendly nano-adsorbents include the materials obtained from industrial wastes, agricultural sources, and by-products, recognized as low-cost sources. These nano-adsorbents, obtained by "green technologies," have adsorption capacities, comparable to the expensive adsorbents (modified chitosan, activated carbon, complex inorganic composites, etc.).

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Section: Adsorbents For Pollutant Removalmentioning

confidence: 99%

Eco-friendly Nano-adsorbents for Pollutant Removal from Wastewaters

Harja¹,

Ciobanu²

2020

Handbook of Nanomaterials and Nanocomposites for Energy and Environmental Applications

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“…Activated carbon (AC) generally refers to carbonaceous materials fabricated from various carbon-rich sources, such as wood, lignite, coal and coconut shells [1]. Activated carbons can be produced from these materials by carbonization process.…”

Section: Introductionmentioning

confidence: 99%

Current Progress on the Surface Chemical Modification of Carbonaceous Materials

2019

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Carbon-based materials is considered one of the oldest and extensively studied research areas related to gas adsorption, energy storage and wastewater treatment for removing organic and inorganic contaminants. Efficient adsorption on activated carbon relies heavily upon the surface chemistry and textural features of the main framework. The activation techniques and the nature of the precursor have strong impacts on surface functionalities. Consequently, the main emphasis for scientists is to innovate or improve the activation methods in an optimal way by selecting suitable precursors for desired adsorption. Various approaches, including acid treatment, base treatment and impregnation methods, have been used to design activated carbons with chemically modified surfaces. The present review article intends to deliver precise knowledge on efforts devoted by researchers to surface modification of activated carbons. Chemical modification approaches used to design modified activated carbons for gas adsorption, energy storage and water treatment are discussed here.

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“…[6][7][8][9] In recent years, many researchers have been attracted to cheap adsorbents. [8][9][10][11][12][13][14][15] The use of activated carbon has been introduced as a widely used method for sulfate removal due to its efficiency and easy usage. 6 Any carbon material can be used to produce activated carbon.…”

Section: Introductionmentioning

confidence: 99%

“…6 Any carbon material can be used to produce activated carbon. Up to now, several studies have been conducted using activated carbon derived from agricultural wastes such as peanut crust, nuts shell, tamarind shell, peanut shell, 16 rice bran, rice hulls, banana peel, orange peel, apple peel, hazelnut, walnut shell, tree's leaf and bark, oak essence, cane bagasse, corn, wheat bran, sawdust, sunflower stem, grape stem, modified algae, alfalfa and mustard [13][14][15][17][18][19][20][21][22][23][24][25][26][27] for the removal of pollutants from wastewater.…”

Section: Introductionmentioning

confidence: 99%

Sulfate Ion Removal From Water Using Activated Carbon Powder Prepared by Ziziphus Spina-Christi Lotus Leaf

Rahmati

Yeganeh

Esmaeili

2019

ACSi

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In this paper, the adsorption potential of activated carbon prepared by Ziziphus spina-christi lotus leaf for the removal of sulfate from aqueous solution was investigated. To this end, the effect of different parameters such as pH, contact time, temperature, adsorbent concentration, and initial sulfate ion concentration was investigated. The results indicated that the highest adsorption efficiency (84.5%) was obtained at pH 6, adsorbent concentration of 5 g/L, sulfate ion concentration of 20 ppm, 65 min and temperature of 45 °C. Also, the adsorption equilibrium study showed that the adsorption process follows the Langmuir isotherm model with the maximum adsorption capacity of 9.3 mg/g. In addition, the thermodynamic study showed that the adsorption process on the activated carbon surface was spontaneous. Moreover, the adsorption process was exothermic accompanied by a decrease in irregularity. Furthermore, the adsorption kinetic study indicated that the adsorption process follows the pseudo-second-order kinetic model.

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Removal of Zn(II) ions from aqueous media on thermal activated sawdust

Cited by 16 publications

References 32 publications

Eco-friendly Nano-adsorbents for Pollutant Removal from Wastewaters

Eco-friendly Nano-adsorbents for Pollutant Removal from Wastewaters

Current Progress on the Surface Chemical Modification of Carbonaceous Materials

Sulfate Ion Removal From Water Using Activated Carbon Powder Prepared by Ziziphus Spina-Christi Lotus Leaf

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