This study evaluates the effect of polymer molecular weight and charge density, algogenic organic matter (AOM), and salt concentration on harvesting efficiency of marine microalgae. Aluminum chloride (AlCl3), chitosan, and five synthetic cationic polymers of different molecular weights and charge density levels were used as flocculation agents. Polymer flocculation of marine microalgae was most efficient when using the highest charge density polymer (FO4990). The flocculant dosage irrespectively of the agent chemistry and charge density was affected by the amount of AOM secreted into the culture media. The presence of AOM increased the amount of required flocculant 7-fold when using synthetic cationic polymers; 10-fold with chitosan; and ~3-fold with AlCl3. Salt concentration of 5 or 35 g/L NaCl alone did not significantly affect removal efficiency, indicating that AOM were the main cause for the increased flocculant dosage requirement. The synthetic cationic polymer (FO4990) was the least expensive flocculation agent.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.biortech.2013.05.125 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Cyano-Bridged Bimetallic Polymer Network-Derived PdFe Intermetallic for Aqueous Rechargeable Zinc-Air Batteries.
ACS Appl Mater Interfaces
January 2025
Functional Materials and Electrochemistry Lab, Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India.
The rational design and synthesis of bifunctionally active and durable oxygen electrocatalysts have garnered significant attention for electrochemical energy conversion and storage. Intermetallic nanostructures are particularly promising for these applications due to their unique catalytic properties and exceptional durability. In this study, we present a fascinating synthetic approach for the direct synthesis of a bifunctional oxygen electrocatalyst based on nitrogen-doped carbon-encapsulated ordered PdFe (o-PdFe@NC) intermetallic, using a cyano-bridged bimetallic single-source precursor tailored for aqueous rechargeable zinc-air batteries (ZABs).
View Article and Find Full Text PDFSimple A-D-A Nonfullerene Acceptors for Efficient Binary Bulk Heterojunction Organic Solar Cells.
ACS Appl Mater Interfaces
January 2025
Département de chimie, Université de Sherbrooke, Sherbrooke, Québec J1K 2R1, Canada.
Two new nonfused ring nonfullerene electron acceptors, NFAs, (dicarbazolyl)bis(2-(3-oxo-2,3-dihydro-1-inden-1-ylidene)malononitrile) () and -(2-(5,6-fluoro-3-oxo-2,3-dihydro-1-inden-1-ylidene)malononitrile) (), thus exhibiting an A-D-A motif, were synthesized and characterized. As thin films, they exhibit the lowest energy absorption signature near 540 nm, extending down to ∼700 nm. This band is due to an intramolecular charge transfer process from the (nonfused dicarbazoyl; ) moiety to the malononitrile-based units () based on density functional theory calculations (DFT), which are also corroborated by time-dependent DFT (TDDFT) computations.
View Article and Find Full Text PDFDeep-learning-enhanced modeling of electrosprayed particle assembly on non-spherical droplet surfaces.
Soft Matter
January 2025
Department of Mechanical and Aerospace Engineering, University at Buffalo, Buffalo, NY 14260, USA.
Monolayer assembly of charged colloidal particles at liquid interfaces opens a new avenue for advancing the additive manufacturing of thin film materials and devices with tailored properties. In this study, we investigated the dynamics of electrosprayed colloidal particles at curved droplet interfaces through a combination of physics-based computational simulations and machine learning. We employed a novel mesh-constrained Brownian dynamics (BD) algorithm coupled with Ansys® electric field simulations to model the transport and assembly of charged particles on a non-spherical droplet surface.
View Article and Find Full Text PDFAn all-vanadium-based lithium-ion full battery with hierarchical yolk-shell structure electrodes.
Nanoscale
January 2025
College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
An all-vanadium-based lithium-ion full battery is successfully assembled with hierarchical micro-nano yolk-shell structures VO and VO as the cathode and anode, which were obtained through a facile solvothermal method with heat treatment under different atmospheres. When used as the cathode of the lithium-ion battery, the hierarchical micro-nano yolk-shell VO demonstrated higher capacities than bulk VO, commercial LiFePO, and LiNiCoMnO cathodes at various current densities. The all-vanadium-based lithium-ion full battery shows good cycle performance at 0.
View Article and Find Full Text PDFDefect-assisted surface modification of a g-CN@WC heterostructure for tetracycline degradation: DFT calculations, degradation pathways, and nematode-based ecological assessment.
Nanoscale
January 2025
School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, South Korea.
Eliminating hazardous antibiotics from aquatic environments has become a major concern in recent years. Tetracycline (TC) compounds pose a challenge for the selective degradation of harmful chemical groups. In this study, we successfully designed carbon vacancies in a gCN@WC (GW) heterostructure for the effective removal of TC pollutants under visible light.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!