Distinctive sorption mechanisms of 4-chlorophenol with black carbons as elucidated by different pH

Shih, Yang-hsin; Su, Yu; Ho, Ren-yu; Su, Po-Hsin; Yang, Chenming

doi:10.1016/j.scitotenv.2012.06.050

Cited by 21 publications

(10 citation statements)

References 34 publications

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“…It has been reported that the adsorption capacity of the biochar is 10-1000 times more than other type of carbon adsorbents due to its surface area, porosity and surface functional groups [9,10]. Various studies have been reported in the literature on the use of biochar as an adsorbent for the treatment of effluent containing various toxic pollutants like phenol [11], atrazine [12], 4-chlorophenol [13], naphthalene [14] and polycyclic aromatic hydrocarbons [15]. Since the disposal of the exhausted adsorbent limits its practical applications, it is desirable to desorb the adsorbate from the adsorbent to increase the life of the adsorbent.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous adsorption and dechlorination of pentachlorophenol from effluent by Ni–ZVI magnetic biochar composites synthesized from paper mill sludge

Devi

Saroha

2015

Chemical Engineering Journal

143

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Section: Introductionmentioning

confidence: 99%

Simultaneous adsorption and dechlorination of pentachlorophenol from effluent by Ni–ZVI magnetic biochar composites synthesized from paper mill sludge

Devi

Saroha

2015

Chemical Engineering Journal

143

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“…After reaching the equilibrium during the sorption experiment, the solution was filtered through a 0.22-μm nylon membrane. The 2,4-DCP concentrations were analyzed by high performance liquid chromatography (HPLC, Perkin Elmer Flexar-15, PerkinElmer Inc., Waltham, USA) with a UV detector equipped with a reverse phase column, 4.6 mm × 150 mm XDB-C18 column (Agilent Technologies Inc., Santa Clara, USA) (Shih et al 2012;Lou et al 2013).…”

Section: Sorption Experimentsmentioning

confidence: 99%

“…It is extensively used to control insects and weeds globally (Peng et al 2016). The excessive use of chlorophenols leads to the pollution of surface water, underground water, air, and agricultural fields (Shih et al 2012;Xiao et al 2016). Vlastos et al (2016) reported that 2-chlorophenol (only one Cl element) with the concentrations up to 1 μg mL -1 could cause chronic toxicity to microbes and fish.…”

Section: Introductionmentioning

confidence: 99%

“…The BC contains various functional groups and microcellular structures, which enhances its efficiency to remove and remediate various organic and inorganic pollutants (Lou et al 2012;Cui et al 2016). Many studies have reported that biochar is an efficient adsorbent for the remediation of various organic pollutants, such as phenol , 4-chlorophenol (Shih et al 2012), and polycyclic aromatic hydrocarbons (Oleszczuk et al 2012). Devi and Saroha (2015) reported that modified biochar was efficient to adsorb pentachlorophenol (PCP) from water.…”

Section: Introductionmentioning

confidence: 99%

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Renewable Material-derived Biochars for the Efficient Removal of 2,4-Dichlorophen from Aqueous Solution: Adsorption/Desorption Mechanisms

et al. 2017

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This study investigated the efficiency of peanut hull (PBC), bush branch (BBC), Spartina alterniflora (SBC), and rape straw (RBC) in removing 2,4-dichlorophen (2,4-DCP) from an aqueous solution. The 2,4-DCP removal efficiency of the four kinds of biochars (BCs) increased in the order BBC > PBC > SBC > RBC. The adsorption process was affected by the pH, contact time, temperature, BC's particle size, and dosage. Based on the results of Fourier transform infrared spectrometry (FTIR) and scanning electron microscope (SEM), the adsorption mechanism of 2,4-DCP was associated with the functional groups and the microtissue and structure of BCs. Furthermore, the organic components of the BCs played an essential role during the adsorption process of the 2,4-DCP. The remediation of organic pollutants by BCs is a complicated process that is characterized by the physical-chemical reaction between the two components (organic pollutants and BCs).

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“…The value DS 0 > 0 indicates an increase in randomness at the interface between solid and liquid during the adsorption [39]. As listed in Table 3, the values of DG 0 are positive, which indicates that the reaction requires a small amount of energy.…”

mentioning

confidence: 94%

Adsorption of Rhodamine B onto a yellow–brown soil: Kinetics, thermodynamics, and role of soil organic matter

Huang

Zhang

2015

Env Prog and Sustain Energy

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The environmental behavior of organic pollutants in soils depends on their adsorption properties onto soils. In this article, the adsorption process of Rhodamine B (RhB) from an aqueous solution onto a yellow-brown soil in Central China was studied. The isotherms and the kinetic data of the RhB adsorption onto the soil were well approached by the Freundlich isotherm model (R 2 > 0.999) and the pseudo-secondorder kinetic model (R 2 > 0.99). The adsorption process of RhB onto the soil was endothermic and increased temperature was conducive to the adsorption process. The adsorption percentage of RhB onto the soil decreased with increasing pH in the range from 2.32 to 10.96. With an increase in the ratio of soil to water, the desorption rate of RhB in the soil clearly decreased. Soil organic matter is the main contribution to RhB adsorption onto the soil. A possible complex mechanism of the adsorption was suggested on the basis of concurrent operation of electrostatic attraction, and hydrogen and chemical bonding forces.

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Distinctive sorption mechanisms of 4-chlorophenol with black carbons as elucidated by different pH

Cited by 21 publications

References 34 publications

Simultaneous adsorption and dechlorination of pentachlorophenol from effluent by Ni–ZVI magnetic biochar composites synthesized from paper mill sludge

Simultaneous adsorption and dechlorination of pentachlorophenol from effluent by Ni–ZVI magnetic biochar composites synthesized from paper mill sludge

Renewable Material-derived Biochars for the Efficient Removal of 2,4-Dichlorophen from Aqueous Solution: Adsorption/Desorption Mechanisms

Adsorption of Rhodamine B onto a yellow–brown soil: Kinetics, thermodynamics, and role of soil organic matter

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