Adsorption behavior of bisphenol A on sediments in Xiangjiang River, Central-south China

Zeng, Guangming; Zhang, Chang; Huang, Guohe; Yu, Jiahui; Wang, Qin; Li, Jianbing; Xi, Beidou; Liu, Hongliang

doi:10.1016/j.chemosphere.2006.04.013

Cited by 114 publications

(73 citation statements)

References 39 publications

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“…Thus, the amount of RB5 on the solid phase will decrease when approaching equilibration. The same phenomenon was observed in Bisphenol A adsorption on sediments [35]. …”

Section: Effects Of the Shaking Speed On The Bentonite Clay Capacity supporting

confidence: 78%

Adsorptive Removal of Reactive Black 5 from Wastewater Using Bentonite Clay: Isotherms, Kinetics and Thermodynamics

2015

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Abstract:The studies of the kinetics and isotherms adsorption of the Reactive Black 5 (RB5) onto bentonite clay were explored in a batch study in a laboratory. The maximum RB5 adsorption conditions of bentonite clay were optimized such as shaking speed (100 rpm), temperature (323 K), pH (10), contact time (40 min), initial dye concentration (170 mg·L −1 ), and particle size (177 µm). The adsorbent surface was characterized using Fourier Transform Infrared Spectroscopy spectroscopy. The mechanisms and characteristic parameters of the adsorption process were analyzed using two parameter isotherm models which revealed the following order (based on the coefficient of determination): Harkin-Jura RB5 dye in the solution, respectively. Moreover, based on the values of standard enthalpy, Gibbs free energy change, and entropy, bentonite clay showed dual nature of exothermic and endothermic, spontaneous and non-spontaneous as well as increased and decreased randomness at solid-liquid interface at 303-313 K and 313-323 K temperature, respectively.

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“…Thus, the amount of RB5 on the solid phase will decrease when approaching equilibration. The same phenomenon was observed in Bisphenol A adsorption on sediments [35]. …”

Section: Effects Of the Shaking Speed On The Bentonite Clay Capacity supporting

confidence: 78%

Adsorptive Removal of Reactive Black 5 from Wastewater Using Bentonite Clay: Isotherms, Kinetics and Thermodynamics

2015

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“…The Freundlich parameter (K f ) can be used as a relative indicator of adsorption capacity. Zeng et al (2006) confirmed that in the case of BPA, it increases with the increasing organic carbon content in the sediment. K f values are also very high in the case of BPA adsorption to activated carbon, e.g.…”

Section: Adsorption Experimentssupporting

confidence: 68%

“…Parameter n is used as indicator of whether adsorption remains constant (n = 1) or decreases with increasing solute concentration (n \ 1). In our case, it was less than 1 suggesting a low adsorption capacity (Zeng et al 2006). Langmuir model has been applied as well (Bansal and Goyal 2005), but correlation between C e /q e and q e was even lower (r 2 = 0.0237-0.1291).…”

Section: Adsorption Experimentsmentioning

confidence: 50%

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The relevance of bisphenol A adsorption during Fenton’s oxidation

Gotvajn

Bistan

Tišler

et al. 2013

Int. J. Environ. Sci. Technol.

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The aim of this research was to assess the efficiency of Fenton's oxidation for degradation of endocrine disruptor bisphenol A (BPA) with emphasis on extent of accompanying adsorption. Adsorption on the waste sludge resulting from the Fenton's oxidation could represent a significant impact on the final removal efficiency of BPA. Fenton's oxidation was accomplished at two concentrations of BPA (0.228 and 22.8 mg L ). In addition to changing concentrations of BPA and sludge, the adsorption process was also influenced by parameters such as temperature, pH and contact time. Adsorption isotherms were determined. Oxidation and adsorption were monitored by gas chromatography combined with mass spectrum. It has been confirmed that BPA is not completely oxidized in Fenton's oxidation, because it is adsorbed to formed waste ferric sludge and thus necessary precautions for sludge deposition must be observed.

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“…Hunan Province is rich in non-ferrous metals, with high levels of mining, mineral processing, and smelting, contributing to the high concentrations distributed in the midstream and downstream region of XR [18,[43][44][45]. In addition, many large cities, such as Xiangtan, Zhuzhou, and Changsha, are also located in the midstream and downstream regions of XR [46]. This urbanization and mineral utilization might explain the high concentration of heavy metals in the sediment of XR.…”

Section: Discussionmentioning

confidence: 99%

Assessment of Heavy Metal Pollution in the Sediment of the Main Tributaries of Dongting Lake, China

Chen

Zheng

et al. 2018

Water

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Heavy metal pollution in sediment is one of the most serious problems in water bodies, including rivers, which can cause secondary pollution when environmental conditions change. In this study, surface sediment samples collected from the four main tributaries of Dongting Lake (i.e., Xiangjiang River (XR), Zishui River (ZR), Yuanjiang River (YR), and Lishui River (LR)) were analyzed for concentrations of Zn, Cr, Cu, As, Cd, and Pb. The spatial distribution, source, and potential ecological risk of these metals were determined. The results suggest a great spatial heterogeneity of heavy metals in the sediment of the studied rivers. Heavy metals had highest concentrations in the sediment of XR, especially midstream and downstream. A principal component analysis (PCA) and correlation analysis indicated that Cd and As were mainly from industrial wastewater and mineral mining, Cr came from natural process and agricultural activities, and Zn and Cu potentially from both. Pb was originated from atmospheric deposition and river inflow transportation. According to the geo-accumulation index (I geo ), enrichment factor (EF), and risk index (RI) assessment, heavy metals pollution was highest in the sediment of XR, and Cd was the main pollutant in the sediment of XR, presenting considerable potential ecological risk. This may contribute to heavy metal pollution in Dongting Lake. This paper provides a reference for the aquatic environmental management of heavy metals in Dongting Lake area and its tributaries.

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Adsorption behavior of bisphenol A on sediments in Xiangjiang River, Central-south China

Cited by 114 publications

References 39 publications

Adsorptive Removal of Reactive Black 5 from Wastewater Using Bentonite Clay: Isotherms, Kinetics and Thermodynamics

Adsorptive Removal of Reactive Black 5 from Wastewater Using Bentonite Clay: Isotherms, Kinetics and Thermodynamics

The relevance of bisphenol A adsorption during Fenton’s oxidation

Assessment of Heavy Metal Pollution in the Sediment of the Main Tributaries of Dongting Lake, China

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