Results 31 to 40 of about 6,237 (184)

The effect of calcium and magnesium on the aggregation of a purple phototrophic bacteria mixed consortium

open access: yesJournal of Chemical Technology &Biotechnology, EarlyView.
Abstract BACKGROUND An essential aspect of applying Purple Phototrophic Bacteria (PPB) technology for wastewater treatment is the biomass separation from the aqueous phase. Ca2+ and Mg2+ have been used to enhance the aggregation of different biological matrices. In this paper, the effect of Ca2+ and Mg2+ on the aggregation of a mixed culture of PPB was
Jairo M Carrillo‐Osorio   +1 more
wiley   +1 more source

The biosorption potential of modified bottle gourd shell for phosphate: Equilibrium, kinetic and thermodynamic studies [PDF]

open access: yesChemical Industry and Chemical Engineering Quarterly, 2018
In order to preserve the environment and prevent the occurrence of eutrophication, a new quaternary ammonium biosorbent based on the bottle gourd (Lagenaria vulgaris) shell (QALVS) was prepared and characterized in the present study.
Marković-Nikolić Dragana Z.   +5 more
doaj   +1 more source

Modeling the effect of salts in single and binary biosorption of acid dyes by residual diatomaceous earth for sustainable treatment of textile wastewaters

open access: yesChemical Engineering Journal Advances, 2023
Biosorption is a well known technology for the reduction of the hazardous nature of textile wastewaters. However, its efficiency and mechanisms should be evaluated on complex conditions to be properly applied.
Matheus Araújo Semião   +2 more
doaj   +1 more source

Removal of pharmaceuticals from municipal wastewater using a powdered activated carbon‐supplemented moving bed membrane bioreactor

open access: yesJournal of Chemical Technology &Biotechnology, EarlyView.
Abstract BACKGROUND The new European Union Wastewater Directive 2024/3019 requires upgrading sewage treatment plants to achieve 80% removal of micropollutants. This study aimed to compare different Powdered Activated Carbon dosing strategies within a hybrid Moving Bed‐Membrane Bioreactor (PAC‐MB‐MBR) system, to evaluate its performance and to study the
Athanasia Iliopoulou   +8 more
wiley   +1 more source

Remoção de níquel de soluções aquosas em batelada e em coluna utilizando a alga marinha marrom Sargassum filipendula - DOI: 10.4025/actascitechnol.v29i2.695

open access: yesActa Scientiarum: Technology, 2008
The nickel(II) biosorption capacity of the Sargassum filipendula brown marine algae was studied in the batch mode. The biosorption study involved the determination of equilibrium data of the nickel-biomass system, considering the influence of the ...
Araceli Aparecida Seolatto   +5 more
doaj   +1 more source

Plasma‐Enabled Simultaneous Synthesis and Nano‐Anchoring of TiO2−x Nanolayers on Mesoporous Bio‐Silica for Effective Photodegradation of Tetramethylammonium Hydroxide

open access: yesSusMat, EarlyView.
A defect‐rich TiO2−x nanolayer was simultaneously synthesized and nano‐anchored on a mesoporous bio‐silica (diatomite) through a rapid, low‐temperature atmospheric‐pressure plasma process in aqueous media. The optimized TiO2−x/bio‐silica composite (DE 700) exhibits oxygen vacancies, an anatase–rutile heterointerface, broad solar‐spectrum absorption ...
Ali M. Abou‐Elanwar   +14 more
wiley   +1 more source

Equilibrium and kinetic studies of Cd²⁺ biosorption by the brown algae Sargassum fusiforme. [PDF]

open access: yesPLoS ONE, 2014
A fundamental investigation of the biosorption of Cd2+ from aqueous solution by the edible seaweed Sargassum fusiforme was performed under batch conditions.
Hui-Xi Zou   +4 more
doaj   +1 more source

Hungarian and Indonesian rice husk as bioadsorbents for binary biosorption of cationic dyes from aqueous solutions: A factorial design analysis

open access: yesHeliyon, 2023
The wastewater of the dye industry can be characterized by a complex chemical composition and consists of numerous dyes. Bioadsorbents are increasingly applied for the biosorption of dyes because they are inexpensive and environmentally friendly.
Hadid Sukmana   +6 more
doaj   +1 more source

Biosorption of Cadmium by Fucus spiralis [PDF]

open access: yesEnvironmental Chemistry, 2004
Environmental Context. Conventional processes for the removal of heavy metals from wastewaters generally involves chemical precipitation of metals (changing the pH) followed by a period to allow the metal precipitates to settle and be separated. These processes are inefficient when the metals are at a low concentration and still demand handling and ...
Cordero, Bruno   +3 more
openaire   +2 more sources

Photocatalytic and Biotechnological Strategies for Remediation of Persistent Organic Pollutants: Mechanisms, Toxicity, and Antimicrobial Perspectives

open access: yesEnvironmental Toxicology, EarlyView.
ABSTRACT Persistent organic pollutants (POPs) pose significant ecological and human health risks due to their persistence, bioaccumulation, toxicity, and global distribution. Conventional remediation methods are often inadequate for achieving complete mineralization, demonstrating the need for advanced and substantial approaches.
Viola O. Okechukwu   +2 more
wiley   +1 more source

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