scholarly journals Eichhornia crassipes (Mart.) Solms (natural or carbonized) as biosorbent to remove pollutants in water

2021 ◽  
Vol 3 (8) ◽  
Author(s):  
Herbert de P. Lima ◽  
Yvan J. O. Asencios

AbstractThe prolific aquatic herb Eichhornia crassipes considered a pest in many countries can cause damage such as obstruction of water flows and impair the locomotion of fishing boats. However, E. crassipes is renewable, inexpensive, and widely available in nature, and its ability to adsorb recalcitrant pollutants with mutagenic and carcinogenic properties, including synthetic dyes and heavy metals, has been extensively studied by the scientific community. This review paper analyzes previous reports concerning the use of E. crassipes (in the natural and carbonized form) as an adsorbent for heavy metal cations and textile dye. The adsorptive capacity of E. crassipes, the best conditions (adsorbent dosage, pH, and temperature) for the removal of these pollutants, the mechanism of adsorption, and the comparison between natural and carbonized forms (advantages and disadvantages) are discussed. All the results revised in this review indicated that the use of E. crassipes (and its carbon derived) as adsorbent is promising and is an excellent material to be applied in the water treatment. It could be used in the actual technologies for the treatment of contaminated water by heavy metals and textile dyes; however, more studies need to be made on scale-up, economy projects, and related issues, to be finally implemented in wastewater treatment plants.

2011 ◽  
Vol 39 (2) ◽  
pp. 135 ◽  
Author(s):  
Erzsebet BUTA ◽  
Laura PAULETTE ◽  
Tania MIHĂIESCU ◽  
Mihai BUTA ◽  
Maria CANTOR

Many plants are capable of accumulating heavy metals (called hyperacumulators), one of which is the water hyacinth Eichhornia crassipes Mart. The roots of this water plant naturally absorb pollutants, including heavy metals such as Pb, Hg, Zn, Co, Cd, and Cu and can be used for wastewater treatment. The aim of this study was to assess the influence of heavy metals on growth and development of water hyacinth and to determinate the uptake capacity of heavy metals of this species. It was evaluated for its effectiveness in reducing pollution potential in wastewater. From the combination of experimental factors 11 variants resulted. The results showed that Eichhornia absorbed a high quantity of Pb (504 mg/kg dry matter) and Cu (561 mg/kg dry matter) in their roots. More Cu accumulated in the root compared to Pb. The level of Zn absorption was lower in roots (84 mg/kg dry matter) and also in stem plus leaves (51 mg/kg dry matter). A high quantity of Cd (281 mg/kg dry matter) was removed from stem plus leaves of Eichhornia while the level of Co was very low (45 mg/kg dry matter). Regarding the growth and development of this plant it was found that in tanks with Pb plants had a better development and had flowers also, and in the case of Cd, Co, Cu at a double dose of maximum admissible limits, the plants died and the growing period was shorter.


2017 ◽  
Vol 3 (5) ◽  
pp. 208
Author(s):  
Wahyu Irawati ◽  
Adolf Jan Nexson Parhusip ◽  
Nida Sopiah ◽  
Juniche Anggelique Tnunay

<p>Phytoremediation is a bioremediation process using plants and microorganisms to extract, sequester, or detoxify heavy metals. <em>Eichhornia crassipes </em>[(Mart.) Solms] is a well-known phytoremediating plant that has the ability to remove heavy metals from water by accumulating them in their tissues. <em>Acinetobacter </em>sp. IrC1 and <em>Acinetobacter </em>sp. IrC2 are copper resistant bacteria isolated from industrial waste in Rungkut, Surabaya. The aim of this research was to study the effect of <em>Acinetobacter </em>sp. IrC1 and <em>Acinetobacter </em>sp. IrC2 inoculation in copper phytoremediation process using <em>Eichhornia crassipes</em>. Bacterial isolate with colony form unit of 10<sup>8 </sup>was inoculated into the rhizosphere of <em>Eichhornia crassipes </em>in water containing 10 mL · L<sup>–1 </sup>and 20 mL · L<sup>–1</sup> copper. Copper removal in contaminated water and copper accumulation in the plant roots was analyzed using atomic absorption spectrophotometer. The results showed that inoculation treatment enhanced the potency of the plant to reduce copper from  94 % concentration level in the medium without bacterial inoculation to 98.3 % and 97 % in medium inoculated with <em>Acinetobacter </em>sp. IrC1 and <em>Acinetobacter </em>sp. IrC2, respectively. <em>Eichhornia crassipes </em>inoculated with <em>Acinetobacter </em>sp. IrC1 accumulated up to six fold higher copper concentrations in roots compared with un-inoculated controls. The roots of <em>Eichhornia crassipes</em> accumulated 596 mg · kg<sup>–1</sup>and 391 mg · kg<sup>–1</sup> in medium containing 5 mL · L<sup>–1</sup> and 10 mL · L<sup>–1</sup> copper without inoculation, while, the upper part of the plants accumulated up to 353 2.5 mg · kg<sup>–1</sup> and 194 1.5 mg · kg<sup>–1</sup> in medium inoculated with <em>Acinetobacter</em> sp. IrC1, respectively. The findings of the study indicated that <em>Acinetobacter </em>sp. IrC1 and <em>Acinetobacter </em>sp. IrC2 can improve the phytoremediation potential of <em>Eichhornia crassipes</em>.</p>


Author(s):  
Seroor Atalah Khaleefa Alia ◽  
Dr. Mohammed Ibrahimb ◽  
Hussein Ali Hussein

Adsorption is most commonly applied process for the removal of pollutants such as dyes and heavy metals ions from wastewater. The present work talks about preparing graphenic material attached sand grains called graphene sand composite (GSC) by using ordinary sugar as a carbon source. Physical morphology and chemical composition of GSC was examined by using (FTIR, SEM, EDAX and XRD). Efficiency of GSC in the adsorption of organic dyes from water was investigated using reactive green dye with different parameters such as (ph, temperature, contact time and dose). Adsorption isotherm was also studied and the results showed that the maximum adsorption capacity of dye is 28.98 mg/g. This fast, low-cost process can be used to manufacture commercial filters to treat contaminated water using appropriate engineering designs.


Chemosphere ◽  
2007 ◽  
Vol 66 (2) ◽  
pp. 353-361 ◽  
Author(s):  
Jiayin Dai ◽  
Muqi Xu ◽  
Jiping Chen ◽  
Xiangping Yang ◽  
Zhenshan Ke

2021 ◽  
Vol 897 ◽  
pp. 109-115
Author(s):  
Sri Martini ◽  
Kiagus Ahmad Roni ◽  
Dian Kharismadewi ◽  
Erna Yuliwaty

This review article presents the usage of various animal bones such as chicken bone, fish bone, pig bone, camel bone, and cow bone as reliable biosorbent materials to remove heavy metals contained in contaminated water and wastewater. The sources and toxicity effects of heavy metal ions are also discussed properly. Then specific insights related to adsorption process and its influential factors along with the proven potentiality of selected biosorbents especially derived from animal bone are also explained. As the biosorbents are rich in particular organic and inorganic compounds and functional groups in nature, they play an important role in heavy metal removal from contaminated solutions. Overall, after conducting study reports on the literature, a brief conclusion can be drawn that animal bone waste has satisfactory efficacy as effective, efficient, and environmentally friendly sorbent material.


2017 ◽  
Vol 162 ◽  
pp. 958-972 ◽  
Author(s):  
Sabolč Pap ◽  
Tatjana Šolević Knudsen ◽  
Jelena Radonić ◽  
Snežana Maletić ◽  
Saša M. Igić ◽  
...  

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