Adsorption of Heavy Metals by Adsorbents from Food Waste Residue

FAN, X.D.; ZHANG, X.K.

doi:10.12783/issn.1544-8053/12/s1/22

Cited by 12 publications

(8 citation statements)

References 20 publications

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“…Although these technologies have been extensively paid much attention, the high cost, huge energy consumption, or the production of considerable toxic waste hamper their application (Mohan and Pittman 2006). Adsorption separation, as one high-efficiency and high-cost-effective treatment technology, is widely applied in the heavy metals removal from aqueous solution (Wang et al 2013;Fan and Zhang 2015).…”

Section: Introductionmentioning

confidence: 99%

Effective Removal of Copper (II) and Cadmium (II) by Adsorbent Prepared from Chitosan-modified Magnetic Biochar

Song¹,

Yang²,

Cao³

2016

JRST

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A novel chitosan-modified magnetic biochar composite (CC-Fe) was synthesized by embedding Fe 2 O 3 and assembling chitosan in two-step. The properties of CC-Fe were characterized systematically by elemental analysis, Brunauer-Emmett-Teller (BET) surface area, scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), and batch sorption processes. The prepared adsorbent composite was comprised of magnetic particulates of Fe 2 O 3 and multifunctional group, and thus exhibited high sorption capability to remove copper (II) or cadmium (II) from waste water. For both copper (II) and cadmium (II), CC-Fe demonstrated a higher sorption capability (98% and 97%) than the non-chitosan magnetic biochar (11% and 7%). The sorption experimental results showed that the composite is a potential sorbent to remove copper (II) and cadmium (II). Due to its excellent magnetic characteristic, the heavy metal-laden CC-Fe could be isolated again from treated solution and reused after the desorption treatment. The functional groups of CC-Fe made efforts to the removal of heavy metals.

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Section: Introductionmentioning

confidence: 99%

Effective Removal of Copper (II) and Cadmium (II) by Adsorbent Prepared from Chitosan-modified Magnetic Biochar

Song¹,

Yang²,

Cao³

2016

JRST

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“…Huang [11] studied the influence of barrier consolidation on transport coefficients, and gave a three-dimensional transport model based on mixture theory for describing the liners that involve circular defects in the geomembrane. Fan et al [12] draw a conclusion that the adsorption of heavy metals presented an order of Cu 2+ > Pb 2+ > Zn 2+ > Cd 2+ . According to large-scale three-dimensional numerical simulation, Wei [13] researched contaminant migration in groundwater and evaluated the scope of groundwater pollution.…”

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confidence: 99%

A Three-Dimensional Model Coupled Mechanical Consolidation and Contaminant Transport

Zhang¹,

Fang²

2016

JRST

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Contaminant transport is a common process for a waste disposal site, which is a practical concern in geo-environmental field. It is essential to study the contaminant transport behavior in impermeable clay liner. Considering the anisotropy of a clay barrier in permeability, a three-dimensional model coupled mechanical consolidation and contaminant transport is developed for simulation of contaminant transport through a deforming porous medium. This is based on the combination of Biot's theory and the theory of contaminant transport. Meanwhile, porosity is viewed as a coupling parameter. The influence of soil consolidation deformation and permeability anisotropy on contaminant transport can thus be determined reasonably. Transport equations are solved by using the finite-element software COMSOL Multiphysics. A parametric study has moreover been conducted to understand the influence of contaminant source types and adsorption modes, including constant contaminated source, attenuation contaminated source, linear adsorption, Freundlich adsorption, Langmuir adsorption. The simulation results indicate that the permeability anisotropy has a negligible effect on contaminant transport, adsorption modes have a significant impact on transport depth and range, and the concentration distribution of contaminant with different contaminated source types have showed a marked difference.

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“…These differences might have been caused by differences of biological uptake, adsorption, etc. [30,31,32] but more studies are needed.…”

Section: Resultsmentioning

confidence: 99%

Modifications of Concentrations of Plant Macronutrient Ions in Digestate from Anaerobic Digestion during Nitrification Processes

Takemura¹,

Endo²,

Shibuya³

et al. 2016

JRST

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ABSTRACT:The goal of this study was to establish a system for converting digestate from anaerobic digestion processes into liquid fertilizer for soilless culture. Modifications of concentrations of plant macronutrient ions during nitrification processes were investigated with digestate from a simulated municipal organic waste. Concentrations of phosphate and calcium ions in the nitrified digestate increased; the rates of increase were 15.3 mg L -1 d -1 and 17.6 mg L -1 d -1 , respectively. Moreover, concentrations of macronutrient ions, except for magnesium, in the nitrified digestate were similar to those in a standard nutrient solution that is commonly applied to soilless culture.

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Adsorption of Heavy Metals by Adsorbents from Food Waste Residue

Cited by 12 publications

References 20 publications

Effective Removal of Copper (II) and Cadmium (II) by Adsorbent Prepared from Chitosan-modified Magnetic Biochar

Effective Removal of Copper (II) and Cadmium (II) by Adsorbent Prepared from Chitosan-modified Magnetic Biochar

A Three-Dimensional Model Coupled Mechanical Consolidation and Contaminant Transport

Modifications of Concentrations of Plant Macronutrient Ions in Digestate from Anaerobic Digestion during Nitrification Processes

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