Physicochemical properties of non-living water hyacinth (<i>Eichhornia crassipes</i>) and lesser duckweed (<i>Lemna minor</i>) and their influence on the As(V) adsorption processes

Romero-Guzmán, Elizabeth Teresita; Reyes-Gutiérrez, Lázaro Raymundo; Marín-Allende, M. J.; González-Acevedo, Zayre I.; Olguin-Gutierrez, M. T.

doi:10.1080/02757540.2013.772589

Cited by 23 publications

(11 citation statements)

References 36 publications

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“…These peaks are characteristic of carboxyl and amide groups, which evidently playing an important role in dye uptake. In another study, the carboxyl and amide groups were identified as the biosorption sites for arsenic ions on the cell wall of Lemna minor [53]. In the current contribution, the vibration frequency at 1155-1078 cm -1 decreased after AO74 biosorption, probably caused by a modification in the polysaccharide structure of the plant cell wall or the removal of the Si-O and/or phosphate group (the latter prompted by the acidic pH used for biosorption).…”

Section: Biosorption and Desorption Cyclesmentioning

confidence: 55%

“…It is likely that the extreme pH conditions involved in removing (pH 2) and subsequently eluting (pH 12) AO74 caused a loss of some biosorption sites. 1078 cm -1 to the C-O-C and -OH vibration of polysaccharides [20,50,53]. The latter bands can also be assigned to the Si-O bond and to the phosphate groups commonly occurring in aquatic biomass [37].…”

Section: Biosorption and Desorption Cyclesmentioning

confidence: 99%

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Biosorptive removal of acid orange 74 dye by HCl-pretreated Lemna sp.

et al. 2020

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Acid orange 74 (AO74) is a chromium-complex monoazo acid dye widely used in the textile industry. Due to being highly toxic and non-biodegradable, it must be removed from polluted water to protect the health of people and the environment. The aim of this study was twofold: to evaluate the biosorption of AO74 from an aqueous solution by utilizing HCl-pretreated Lemna sp. (HPL), and to examine dye desorption from the plant material. The maximum capacity of AO74 biosorption (64.24 mg g-1) was reached after 4 h at the most adequate pH, which was 2. The biosorption capacity decreased 25% (to 48.18 mg g-1) during the second biosorption/desorption cycle and remained essentially unchanged during the third cycle. The pseudo-second-order kinetics model concurred well with the experimental results of assays involving various levels of pH in the eluent solution and distinct initial concentrations of AO74. NaOH (0.01 M) was the best eluent solution. The Toth isotherm model best described AO74 biosorption equilibrium data. FTIR analysis confirmed the crucial role of HPL proteins in AO74 biosorption. SEM-EDX and CLSM techniques verified the effective biosorption/desorption of the dye during the three cycles. Therefore, HPL has potential for the removal of AO74 dye from wastewaters.

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Section: Biosorption and Desorption Cyclesmentioning

confidence: 55%

Section: Biosorption and Desorption Cyclesmentioning

confidence: 99%

Biosorptive removal of acid orange 74 dye by HCl-pretreated Lemna sp.

et al. 2020

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“…Some studies have shown that the solution pH was associated with the surface charge of adsorbents, the degree of ionization, and the different ionic forms of heavy metals in solution, all of which affected the heavy metal adsorption process (Zhao et al, 2010;Romero-Guzman et al, 2013). Removal efficiencies at different pH may be attributed to one or more of the factors.…”

Section: Discussionmentioning

confidence: 99%

Adsorption of Fe(II) Solution by Sugarcane Bagasse and Activated Carbon Prepared from Sugarcane Bagasse

Sawasdee¹,

Watcharabundit²

2019

CMUJNS

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Fe(II) contaminant in groundwater is one of the most important in the environmental pollutions as it affects the taste, esthetic quality of the water and turns the color of the water to red-brown. Moreover, when Fe(II) contaminate in large amounts, it is harmful to health. The objective of this study was to evaluate the performance of Fe(II) removal in aqueous solution by the low-cost adsorbents namely, sugarcane bagasse (SB) and activated carbon prepared from sugarcane bagasse (ACSB). The two adsorbents were characterized by BET, FTIR, SEM, and XRF. The adsorption behavior of SB and ACSB for Fe(II) in aqueous solution was investigated as the function of pH (1-5), contact time (5-360 min), initial Fe(II) concentration (50-250 mg/L), and temperature (20-40 o C). The adsorption data were analyzed by isotherm and kinetic models. The experimental equilibrium data were best fitted with the Langmuir isotherm model and the maximum monolayer adsorption capacity values were 39.52 and 131.57 mg/g for the SB and the ACSB respectively. The kinetic adsorption data were found to fit well with the pseudo-second-order kinetic and intraparticle diffusion models. Thermodynamic analysis results showed that the adsorption of Fe(II) was spontaneous and endothermic in nature, and was controlled by physical mechanism. In summary, the findings suggested that SB and ACSB were efficient adsorbents, and ACSB showed higher removal of Fe(II) from aqueous solution.

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“…The dried duckweed biomass shows a porous structure with free spaces. In addition, duckweed possess diverse functional groups, namely carboxyl, amide, thiol and hydroxyl, which can be a potential binder for heavy metals, like arsenic and lead [82,83]. The adsorption capacity of dried duckweed biomasses is listed in Table 3.…”

Section: Non-living/dried Duckweed Biomassmentioning

confidence: 99%

Duckweed: a model for phytoremediation technology

Kaur

Kanwar

2021

Holist. approach environ.

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The Lemnaceae or duckweed family comprises 37 species of smallest and simplest flowering plants. Duckweeds have a fast growth rate, can survive under a wide range of temperature and pH conditions and are easy to maintain and harvest which makes them an excellent candidate for bioremediation of wastewaters. The main objective of the present review is to extend an appreciation for the potential of living and non-living biomass of duckweed in remediating waters contaminated with heavy metals. Along with showing the detailed mechanism of phytoremediation by duckweed, the paper also discusses the enhancement of duckweed phytoremediation by the integration of transgenic technology. Furthermore, the paper explores other applications of duckweed specifically as fuel, animal feed, in human nutrition, in medicine and as a life support system. Apart from this, various disposal mechanisms for harvested duckweed have been analysed. Current understanding of removal efficiencies of several contaminants by employing duckweed is limited mainly to laboratory experiments. More concentrated and persistent efforts to develop efficient approaches for the genetic transformation of duckweeds can expand the development and utilization of duckweeds.

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Physicochemical properties of non-living water hyacinth (Eichhornia crassipes) and lesser duckweed (Lemna minor) and their influence on the As(V) adsorption processes

Cited by 23 publications

References 36 publications

Biosorptive removal of acid orange 74 dye by HCl-pretreated Lemna sp.

Biosorptive removal of acid orange 74 dye by HCl-pretreated Lemna sp.

Adsorption of Fe(II) Solution by Sugarcane Bagasse and Activated Carbon Prepared from Sugarcane Bagasse

Duckweed: a model for phytoremediation technology

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