Comparative Study of Two Organic Wastes as Adsorbents in the Treatment of Water Rich in Nitrogen Compounds

• Published in: Water (Basel) Vol. 15; no. 5; p. 876
• Main Authors: Neulls, Thais Fernandes, Gouveia, Paulo Leonardo Santos, da Silva Pereira, Carlos Drielson, Souza, Camilla Stephane Dias, Chaves, Fernanda Nayr Sena, Souza, Isabela Nascimento, Tavarez, Rudys Rodolfo de Jesus, Aliança, Amanda Silva dos Santos, Gonçalves, Maria Cláudia, Gomes, Wolia Costa, da Silva, Darlan Ferreira, Silva, Maria Raimunda Chagas, Silva, Fabrício Brito, Lima, Álvaro Silva, Gomes, Edelvio de Barros, Miranda, Rita de Cássia M. de
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 01-03-2023
• Subjects: Adsorbents; adsorption biomass; Adsorptivity; Algae; Analysis; Aquatic ecosystems; Biomass; Chitosan; Comparative studies; Design of experiments; Effluent treatment; Effluents; Electric properties; Electrical conductivity; Electrical resistivity; Environmental impact; Eutrophication; Experimental design; Laboratories; Lagoons; Nitrates; Organic materials; Organic wastes; pineapple crown; Plant biomass; Public health; Purification; Sanitation; Sewage; Spectrum analysis; Substrates; treatment; Turbidity; Wastewater treatment; Water quality; Brazil; Philippines
• DOI: 10.3390/w15050876
• EISSN: 2073-4441

Background: The objective of this work was to propose the treatment of the wastewater from Laguna da Jansen using adsorptive processes of residues of pineapple crown and shrimp chitosan. Methods: Residual substrates were distributed in 11 Erlenmeyers, and 250 mL of residual pond water were added; the solution was incubated under agitation at the times and amounts established by the Experimental Design (DCCR). After this period, analyses of pH, electrical conductivity, turbidity, nitrate, and nitrite, morphological analyses by SEM, and structural analyses by FTIR and XRD were performed. Results: The FTIR and SEM results showed that the biomass presented active chemical groups and a morphology rich in pores. The experimental design showed that the substrate content was the variable that influenced the lagoon effluent treatments for both tested biomasses; however, when observing the specific values of the response variables, the vegetable adsorbent was more efficient with the conditions of 15g of substrate and 30 days of process. Conclusion: Plant biomass is more efficient in the treatment of effluents rich in organic materials. It can be used in treatment plants as an alternative for the removal of toxic compounds present in wastewater and effluents.