Removal of copper ions from aqueous solution using low temperature biochar derived from the pyrolysis of municipal solid waste

Hoslett, John; Ghazal, Heba; Ahmad, Darem; Jouhara, Hussam

doi:10.1016/j.scitotenv.2019.04.085

Cited by 97 publications

(30 citation statements)

References 74 publications

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“…Biochar produced at higher temperatures usually presents higher surficial area and porosity (BIRAR, 2014;SHAABAN et al, 2013), which contributes to the retention of organic and inorganic contaminants (BEESLEY et al, 2011). The mechanisms of heavy metals retention are complex and involve surface complexation, electrostatic interactions and cation exchange (HOSLETT et al, 2019). Besides the charge related surface effects, biochar is usually alkaline and has a liming effect that can cause significant metal precipitation (ALMAROAI et al, 2014).…”

Section: Biochars Characterizationmentioning

confidence: 99%

Coffee Waste Biochar: Characterization and Zinc Adsorption From Aqueous Solution

Sertoli

Carnier

Abreu

et al. 2019

C.Sci.

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The final disposal of organic wastes has become a major challenge with increasing industrialization and population growth. Coffee wastes are examples of this, thus the conversion of these biomasses into biochar through pyrolysis could provide economic and environmental benefits, such as remediation of heavy metal polluted water. Therefore, in this work, biochar produced at 700 °C from spent coffee grounds and coffee parchment were evaluated for Zn removal from aqueous solution. Batch adsorption tests were performed with six Zn concentrations and four replicates for each material. The desorption process was performed sequentially with a pH 4.9 buffer acetic acid solution. Langmuir and Freundlich isotherms were fitted to the adsorption data using non-linear models. Batch adsorption tests showed that the adsorption was strongly dependent on biochar properties. Biochar prepared from coffee parchment was more effective at Zn binding, showing the highest adsorption capacity (0.792 mg g<sup>-1</sup>). Nevertheless, both biochars bounded Zn strongly and the adsorption process was not easily reversed.

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Section: Biochars Characterizationmentioning

confidence: 99%

Coffee Waste Biochar: Characterization and Zinc Adsorption From Aqueous Solution

Sertoli

Carnier

Abreu

et al. 2019

C.Sci.

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“…The results are listed in Table . The PAG adsorption capacity for Cu(II) was higher than that of almost all listed existing adsorbent materials (9.50–214 mg g −1 ) . However, these existing adsorbent materials were usually difficult to prepare owing to the complex and expensive synthesis process required.…”

Section: Resultsmentioning

confidence: 99%

A facilely synthesized polyanionic gel adsorbent with high adaptability and new adsorption effects for purification of Cu(II)‐containing wastewater

Song

Bai

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND: Cu(II)-containing wastewater causes serious pollution of the water environment. Adsorption is one of the most commonly used water purification methods, with the selection of suitable adsorbents being the key factor. This motivates the development of new efficient adsorbents to purify Cu(II)-containing wastewater. RESULTS:A highly adaptable polyanionic gel (PAG) was synthesized by the facile crosslinking copolymerization of acrylic acid (AA) and triallylmethylammonium chloride (TAMAC) at 65 ∘ C for 0.5 h, followed by a simple neutralization treatment, avoiding the inconvenience of the complex and expensive preparation process required to prepare existing adsorbents. When first used as an adsorbent material, PAG achieved highly efficient purification of a wide concentration range of 10-2000 mg L −1 Cu(II)-containing wastewater. The PAG adsorption capacity for Cu(II) was 222.2 mg g −1 , which was higher than the values of selected existing adsorbent materials (9.50-214 mg g −1 ), and PAG had the advantages of being eco-friendly, facilely obtained and regenerable. Also, PAG maintained stable adsorption ability even when the adsorption temperature varied from 30 to 50 ∘ C. Moreover, a series of new adsorption effects were first observed as the key factors for PAG adsorption to achieve high adaptability.CONCLUSION: Generally, considering the comprehensive performances, PAG would have higher adaptability in the efficient purification of different concentrations and different temperatures of Cu(II)-containing wastewater. It would thus have better application in different water environments and be regarded as a better adsorbent alternative.

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“…Biochar adsorbents can be produced by the pyrolysis of different carbonaceous precursor materials such as sea weed, paper pulp/sludge, sugarcane bagasse, and mixed municipal discarded material (MMDM) (Ahmed et al, 2019;Chaukura et al, 2017;Lyu et al, 2018;Sumalinog et al, 2018). Studies evaluated the sorptive capacities of biochar concerning various pollutants including toxic heavy metals such as copper, lead, cadmium (Hoslett et al, 2019;Rechberger et al, 2019;Trakal et al, 2016), metalloids such as arsenic (Wongrod et al, 2019), and both biological and non-biological organic pollutants (Ren et al, 2018;Sasidharan et al, 2016;Zhang et al, 2017). Many of these studies display the positive characteristics of char for varied contaminant removal/sorption from aqueous solutions.…”

Section: J O U R N a L P R E -P R O O Fmentioning

confidence: 99%

Removal of methylene blue from aqueous solutions by biochar prepared from the pyrolysis of mixed municipal discarded material

Hoslett

Ghazal

Mohamad

et al. 2020

Science of The Total Environment

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135

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Removal of copper ions from aqueous solution using low temperature biochar derived from the pyrolysis of municipal solid waste

Cited by 97 publications

References 74 publications

Coffee Waste Biochar: Characterization and Zinc Adsorption From Aqueous Solution

Coffee Waste Biochar: Characterization and Zinc Adsorption From Aqueous Solution

A facilely synthesized polyanionic gel adsorbent with high adaptability and new adsorption effects for purification of Cu(II)‐containing wastewater

Removal of methylene blue from aqueous solutions by biochar prepared from the pyrolysis of mixed municipal discarded material

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