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Use of Eichhornia Crassipes as a Bioadsorbent for the Removal of Methyl Orange and Methylene Blue Present in Residual Solutions

Hernández-Origel Carlos David, Patiño-Saldivar Laura, Salazar-Hernández Mercedes, Ardila Alba Nelly, Talavera-López Alfonso, Hernánez-Soto Rosa, Hernández José Alfredo

Journal of Ecological Engineering

2022

Vol. 23, nr 9

193--211

The textile industry is very important because its products are widely used by society, however, this activity has a great contribution to the contamination of water resources due to its effluents that contain large amounts of colorants, among which is the blue of methylene (MB) and methyl orange (MO) that can cause damage to the health of living being. For this reason the present study concerned the removal of these dyes by adsorption using Eichhornia Crassipes (Water lily) with different treatments. The results show that the chemisorption removal process using two sites per dye molecule having an exothermic nature for the water-treated lily and for the NaOH-treated lily is endothermic. The maximum adsorption capacities of 228.9 mg/g for MB (60 °C) and 155.38 mg/g (30 °C) for MO with the NaOH treatment were achieved. The SEM analysis shows that there are significant changes in the surface due to the treatments. The XRD patterns indicate that with the pretreatment with NaOH the crystallinity of WL increases while the treatment with water maintains the presence of amorphous cellulose. In the FTIR spectra, the bands corresponding to different functional groups such as lignin, cellulose and hemicellulose that participate in the adsorption of both dyes are observed.

Biosorption of heavy metals - modern and cheap method of polluted wastewater treatment

Kita G., Skoblewski P.

Zeszyty Naukowe. Chemia Spożywcza i Biotechnologia / Politechnika Łódzka

2010

Z. 74

99-105

The article is a literature review. It shows the drawbacks of traditional wastewater treatment, heavy metal polluted wastewater in particular. The dangers of heavy metal poisoning have been reported together with main sources of pollution. The current studies on bioadsorbents and techniques involving biomass were presented.

Praca jest przeglądem literatury przedmiotu. Przedstawia wady tradycyjnych metod oczyszczania ścieków z metali ciężkich, przede wszystkim, ścieków zanieczyszczonych tymi metalami. Wykazano szkodliwość zatruć metalami ciężkimi, wraz z głównymi źródłami zanieczyszczeń. Przedstawiono aktualny stan nauki na temat bioadsorbentów i technik wykorzystujących biomasę.

Bioadsorpcja jonów ołowiu na wybranych złożach bioadsorbentów. Studia literaturowe

Nastaj J., Hnat A.

Przemysł Chemiczny

2008

T. 87, nr 8

844-849