Enhancing the Biosorption Capacity of Macrocystis pyrifera: Effects of Acid and Alkali Pretreatments on Recalcitrant Organic Pollutants Removal DOI Open Access

Magdalena Varas,

Jorge Castro-Rojas, Loretto Contreras‐Porcia

et al.

International Journal of Molecular Sciences, Journal Year: 2025, Volume and Issue: 26(7), P. 3307 - 3307

Published: April 2, 2025

The effects of acid and alkali pretreatments on the physicochemical textural properties Macrocystis pyrifera were evaluated to assess its potential for removing recalcitrant organic pollutants from aquatic systems. Untreated (UB), acid-pretreated (ACPB), alkali-pretreated (ALPB) seaweed biomass characterized using SEM, FTIR-ATR, N2 adsorption-desorption, potentiometric titrations. Adsorption isotherms kinetic studies, methylene blue (MB) as a model pollutant, conducted evaluate removal performance. All biosorbents exhibited Langmuir behavior, with maximum adsorption capacities 333 mg g-1 189 526 (ALPB). FTIR-ATR SEM analyses revealed that pretreatment increased abundance hydroxyl, carboxylate, sulfonated functional groups cell walls, along greater porosity surface roughness, resulting in enhanced MB adsorption. In contrast, exposure carboxylic, amine, amide groups, reducing electrostatic interactions. energy values further supported this, while intra-particle diffusion indicated two-step process involving onto surface, followed by into internal pores. These findings highlight application pyrifera-based treatment wastewater containing pollutants.

Language: Английский

Assessment of solar photocatalytic wastewater disinfection and microcontaminants removal by modified-allophane nanoclays based on TiO2, Fe and ZnO at laboratory and pilot scale DOI
Jorge Castro-Rojas, M.A. Rao, Ilaria Berruti

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 157894 - 157894

Published: Nov. 1, 2024

Language: Английский

Citations

4
Enhancing the Biosorption Capacity of Macrocystis pyrifera: Effects of Acid and Alkali Pretreatments on Recalcitrant Organic Pollutants Removal DOI Open Access

Magdalena Varas,

Jorge Castro-Rojas, Loretto Contreras‐Porcia

et al.

International Journal of Molecular Sciences, Journal Year: 2025, Volume and Issue: 26(7), P. 3307 - 3307

Published: April 2, 2025

The effects of acid and alkali pretreatments on the physicochemical textural properties Macrocystis pyrifera were evaluated to assess its potential for removing recalcitrant organic pollutants from aquatic systems. Untreated (UB), acid-pretreated (ACPB), alkali-pretreated (ALPB) seaweed biomass characterized using SEM, FTIR-ATR, N2 adsorption-desorption, potentiometric titrations. Adsorption isotherms kinetic studies, methylene blue (MB) as a model pollutant, conducted evaluate removal performance. All biosorbents exhibited Langmuir behavior, with maximum adsorption capacities 333 mg g-1 189 526 (ALPB). FTIR-ATR SEM analyses revealed that pretreatment increased abundance hydroxyl, carboxylate, sulfonated functional groups cell walls, along greater porosity surface roughness, resulting in enhanced MB adsorption. In contrast, exposure carboxylic, amine, amide groups, reducing electrostatic interactions. energy values further supported this, while intra-particle diffusion indicated two-step process involving onto surface, followed by into internal pores. These findings highlight application pyrifera-based treatment wastewater containing pollutants.

Language: Английский

Citations

0