Megamerger of biosorbents and catalytic technologies for the removal of heavy metals from wastewater: Preparation, final disposal, mechanism and influencing factors

Huang, Danlian; Li, Bo; Ou, Jing; Xue, Wenjing; Li, Jing; Li, Zhihao; Li, Tao; Chen, Sha; Deng, Rui; Guo, Xueying

doi:10.1016/j.jenvman.2019.109879

Cited by 82 publications

(29 citation statements)

References 214 publications

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“…Owing to the presence of these groups on the surface, PEFS attracts positively charged metal ions via electrostatic interactions and ion exchange methods. Finally, after these interactions, with the entrapping of metal ions in the PEFS surface, the complexation occurs, which is hypothesized via -COO and -OH interactions with Pb(II) and Cd(II) [ 38 , 39 , 40 , 41 ]. These functional groups, mainly the carboxyl and hydroxyl groups, get deprotonated at pH > pHpzc and the metal ions (Pb 2+ and Cd 2+ ) form complexes with the anionic form of these groups, resulting in the enhanced biosorption of the PEFS surface [ 32 , 42 ].…”

Section: Resultsmentioning

confidence: 99%

Utilization of Phyllanthus emblica fruit stone as a Potential Biomaterial for Sustainable Remediation of Lead and Cadmium Ions from Aqueous Solutions

et al. 2022

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In the present work, an effort has been made to utilize Phyllanthus emblica (PE) fruit stone as a potential biomaterial for the sustainable remediation of noxious heavy metals viz. Pb(II) and Cd(II) from the aqueous solution using adsorption methodology. Further, to elucidate the adsorption potential of Phyllanthus emblica fruit stone (PEFS), effective parameters, such as contact time, initial metal concentration, temperature, etc., were investigated and optimized using a simple batch adsorption method. It was observed that 80% removal for both the heavy metal ions was carried out within 60 min of contact time at an optimized pH 6. Moreover, the thermodynamic parameters results indicated that the adsorption process in the present study was endothermic, spontaneous, and feasible in nature. The positive value of entropy further reflects the high adsorbent–adsorbate interaction. Thus, based on the findings obtained, it can be concluded that the biosorbent may be considered a potential material for the remediation of these noxious impurities and can further be applied or extrapolated to other impurities.

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Section: Resultsmentioning

confidence: 99%

Utilization of Phyllanthus emblica fruit stone as a Potential Biomaterial for Sustainable Remediation of Lead and Cadmium Ions from Aqueous Solutions

et al. 2022

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“…When the pH of the solution was adjusted from 5.80 to 2.00 with HNO 3 , the photocatalytic degradation efficiency decreased to 62.07% since TC molecules exist in the form of cationic species (pH < 3.3) and zwitterionic species (3.3 < pH < 7.68) . Therefore, as the pH of the solution decreased, the content of H 3 O + in the solution gradually increased and competed with TC for the active sites of the catalytic reaction, resulting in the decrease of photocatalytic degradation efficiency . Additionally, the degradation efficiency decreased when preliminary pH increased from 6.02 to 6.99 with NaOH solution.…”

Section: Resultsmentioning

confidence: 99%

PDI Supermolecule-Encapsulated 3D BiVO₄ toward Unobstructed Interfacial Charge Transfer for Enhanced Visible-Light Photocatalytic Activity

Chen

Huang

et al. 2021

J. Phys. Chem. C

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The construction of a heterojunction photocatalyst as an effective method to enhance the charge separation has attracted great attention from researchers. Herein, a novel BiVO4/self-assembled perylene diimide (BiVO4/PDIsa) organic supermolecule photocatalyst was successfully constructed via an in situ electrostatic assembling method. Various characterization methods were employed to systematically study the phase structure, morphology, and photoelectrochemical properties of BiVO4/PDIsa. Among the different ratios of composites, the 20%BiVO4/PDIsa exhibited the optimal photocatalytic activity under visible-light irradiation, and its degradation efficiency for tetracycline (TC) could reach 81.75% within 30 min. In addition, the corresponding TC degradation rate constant was 0.0545 min–1, which was 1.69 times and 3.61 times that of the pure PDIsa and BiVO4, respectively. Subsequently, the radical trapping experiments and electron spin response (ESR) test indicated that 1O2, •O2 –, and h+ were the primary reactive species in the photocatalytic process. Importantly, the efficient electron migration path and photocatalytic mechanism of the catalyst were inferred by experimental study and density functional theory (DFT) calculations. In brief, this work provides a promising approach in designing an inorganic–organic Z-scheme heterojunction photocatalyst for environmental remediation.

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“…There are several methods for desorption of metals from sorbent surfaces, one of which uses inorganic acids such as: HCl, HNO 3 , and H 2 SO 4 , which recover bound metals via proton exchange [9,112]. However, they can damage the surface of the biosorbent to some extent, causing a reduction in its biosorption capacity.…”

Section: Desorption Of Biosorbentmentioning

confidence: 99%

“…Therefore, biowaste can be used as a product to achieve zero waste production. Bioprocesses using waste materials of different types, such as waste from agricultural production [7][8][9], food industry [10,11], paper, wood processing [12,13], or fisheries [14][15][16] are of increasing interest due to sustainability initiatives. Biosorbents are produced using biomaterials in their natural form or with improved pollutant removal properties.…”

Section: Introductionmentioning

confidence: 99%

Towards a Circular Economy: Analysis of the Use of Biowaste as Biosorbent for the Removal of Heavy Metals

Madeła

Skuza

2021

Energies

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Industrial human activity has led to the release of substantial amounts of heavy metals into the environment. Contamination of water with heavy metals such as lead, cadmium, copper, zinc, chromium, or nickel represents a serious problem. As part of the circular economy, it is appropriate to use biowaste from agriculture, fisheries, and the timber industry as biosorbents. In this literature review, the potential of using these biowaste groups as biosorbents for metal removal is presented. This biowaste is characterized by the presence of carboxyl, hydroxyl, carbonyl, amide, amine, sulfydryl, and other groups on their surface, which form complexes and chelates with metals present in water. Biosorption seems to be a potential alternative to conventional technologies for removing or recovering heavy metals from water or wastewater, which are uneconomical and generate additional waste. The paper demonstrates that harnessing the potential of biowaste to remove metals is beneficial to the environment as they can solve the problem of incineration and realise recycling that meets the circular economy. Although the choice of a suitable biosorbent for the removal of a particular metal involves a lot of research, the high biosorption efficiency, low cost, and renewability justify their use.

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Megamerger of biosorbents and catalytic technologies for the removal of heavy metals from wastewater: Preparation, final disposal, mechanism and influencing factors

Cited by 82 publications

References 214 publications

Utilization of Phyllanthus emblica fruit stone as a Potential Biomaterial for Sustainable Remediation of Lead and Cadmium Ions from Aqueous Solutions

Utilization of Phyllanthus emblica fruit stone as a Potential Biomaterial for Sustainable Remediation of Lead and Cadmium Ions from Aqueous Solutions

PDI Supermolecule-Encapsulated 3D BiVO₄ toward Unobstructed Interfacial Charge Transfer for Enhanced Visible-Light Photocatalytic Activity

Towards a Circular Economy: Analysis of the Use of Biowaste as Biosorbent for the Removal of Heavy Metals

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Megamerger of biosorbents and catalytic technologies for the removal of heavy metals from wastewater: Preparation, final disposal, mechanism and influencing factors

Cited by 82 publications

References 214 publications

Utilization of Phyllanthus emblica fruit stone as a Potential Biomaterial for Sustainable Remediation of Lead and Cadmium Ions from Aqueous Solutions

Utilization of Phyllanthus emblica fruit stone as a Potential Biomaterial for Sustainable Remediation of Lead and Cadmium Ions from Aqueous Solutions

PDI Supermolecule-Encapsulated 3D BiVO4 toward Unobstructed Interfacial Charge Transfer for Enhanced Visible-Light Photocatalytic Activity

Towards a Circular Economy: Analysis of the Use of Biowaste as Biosorbent for the Removal of Heavy Metals

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Product

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PDI Supermolecule-Encapsulated 3D BiVO₄ toward Unobstructed Interfacial Charge Transfer for Enhanced Visible-Light Photocatalytic Activity