Kinetic and equilibrium studies on bioadsorption of copper and lead by water hyacinth (<i>Eichhornia crassipes</i>) plant powder

Hazarika, Linton; Shah, Kishor Kr.; Baruah, Gitali; Bharali, Ranjan Kr.

doi:10.1002/vjch.202200138

Cited by 3 publications

(3 citation statements)

References 41 publications

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“…Continuous treatment systems with fixed biomass have been used to purify water by exposing it to cellulose. This novel method yields reliable results and could be implemented in industries that contaminate water resources with their effluents [7][8][9][10]. Continuous systems are economical and easy to construct, as they are made with recycled materials [11].…”

Section: Introductionmentioning

confidence: 96%

The Design of a Sustainable Industrial Wastewater Treatment System and The Generation of Biohydrogen from E. crassipes

Sayago

2024

Polymers

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Water scarcity is a significant global issue caused by the prolonged disregard and unsustainable management of this essential resource by both public and private bodies. The dependence on fossil fuels further exacerbates society’s bleak environmental conditions. Therefore, it is crucial to explore alternative solutions to preserve our nation’s water resources properly and promote the production of biofuels. Research into the utilization of E. crassipes to remove heavy metals and generate biofuels is extensive. The combination of these two lines of inquiry presents an excellent opportunity to achieve sustainable development goals. This study aims to develop a sustainable wastewater treatment system and generate biohydrogen from dry, pulverized E. crassipes biomass. A treatment system was implemented to treat 1 L of industrial waste. The interconnected compartment system was built by utilizing recycled PET bottles to generate biohydrogen by reusing the feedstock for the treatment process. The production of biological hydrogen through dark fermentation, using biomass containing heavy metals as a biohydrogen source, was studied. Cr (VI) and Pb (II) levels had a low impact on hydrogen production. The uncontaminated biomass of E. crassipes displayed a significantly higher hydrogen yield (81.7 mL H2/g glucose). The presence of Cr (IV) in E. crassipes leads to a decrease in biohydrogen yield by 14%, and the presence of Pb (II) in E. crassipes leads to a decrease in biohydrogen yield of 26%. This work proposes a strategy that utilizes green technologies to recover and utilize contaminated water. Additionally, it enables the production of bioenergy with high efficiency, indirectly reducing greenhouse gases. This strategy aligns with international programs for the development of a circular economy.

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Section: Introductionmentioning

confidence: 96%

The Design of a Sustainable Industrial Wastewater Treatment System and The Generation of Biohydrogen from E. crassipes

Sayago

2024

Polymers

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“…Water hyacinth (Eichornia crassipes) has been used as a biosorbent for heavy metal removal [19][20][21][22][23][24][25]. Roots and stems are parts of water hyacinth widely used as a biosorbent [19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

“…Roots and stems are parts of water hyacinth widely used as a biosorbent [19][20][21][22]. Only a few studies reported the utilization of water hyacinth leaf as a biosorbent [23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Biosorption of Cu(II) Ions by Water Hyacinth Leaf Powder: Process Performance, Kinetics, and Biosorption Isotherm

Ratnawati,

Prasetyaningrum,

Hargono

et al. 2024

Period. Polytech. Chem. Eng.

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The water hyacinth leaf powder (WH) was used to adsorb Cu(II) from wastewater. The WH was modified through sulfuric acid (A-WH) and sodium hydroxide (B-WH) treatments. The biosorption was studied with various initial pH, initial Cu(II) concentrations, and biosorp-tion time. The results show that the biosorption capacities of the biosorbents increase with the initial Cu(II) concentration. The optimum pH for the biosorption was 7.5, 7.0, and 7.5 for the WH, A-WH, and B-WH, respectively. The SEM images of the raw and treated WH revealed that alkali treatment could remove lignin more than the acid treatment, leaving more macropores in the B-WH than in the A-WH. The acid and alkali treatments to the WH leaf increase the biosorption capacity of the WH for Cu (II). The pseudo-second-order kinetic model can represent the dynamic behavior of the biosorption better than the pseudo-first-order model. The Langmuir model is better than the Freundlich model for describing the biosorption isotherm. The maximum biosorption capacities of the biosorbents predicted by the Langmuir model were 14.92 mg g−1, 18.32 mg g−1, and 23.27 mg g−1 for WH, A-WH, and B-WH, respectively.

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Triggering antibacterial activity of a common plant by biosorption of selected heavy metals

Kováčová,

Bodnár Yankovych,

Augustyniak

et al. 2024

J Biol Inorg Chem

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The presented study proposes an efficient utilization of a common Thymus serpyllum L. (wild thyme) plant as a highly potent biosorbent of Cu(II) and Pb(II) ions and the efficient interaction of the copper-laden plant with two opportunistic bacteria. Apart from biochars that are commonly used for adsorption, here we report the direct use of native plant, which is potentially interesting also for soil remediation. The highest adsorption capacity for Cu(II) and Pb(II) ions (qe = 12.66 and 53.13 mg g−1, respectively) was achieved after 10 and 30 min of adsorption, respectively. Moreover, the Cu-laden plant was shown to be an efficient antibacterial agent against the bacteria Escherichia coli and Staphylococcus aureus, the results being slightly better in the former case. Such an activity is enabled only via the interaction of the adsorbed ions effectively distributed within the biological matrix of the plant with bacterial cells. Thus, the sustainable resource can be used both for the treatment of wastewater and, after an effective embedment of metal ions, for the fight against microbes. Graphical abstract

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Kinetic and equilibrium studies on bioadsorption of copper and lead by water hyacinth (Eichhornia crassipes) plant powder

Cited by 3 publications

References 41 publications

The Design of a Sustainable Industrial Wastewater Treatment System and The Generation of Biohydrogen from E. crassipes

The Design of a Sustainable Industrial Wastewater Treatment System and The Generation of Biohydrogen from E. crassipes

Biosorption of Cu(II) Ions by Water Hyacinth Leaf Powder: Process Performance, Kinetics, and Biosorption Isotherm

Triggering antibacterial activity of a common plant by biosorption of selected heavy metals

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