4.7 Article

Inactivation of harmful algal bloom by an environmentally friendly photocatalyst under photo-Fenton-like degradation process br

Related references

Note: Only part of the references are listed.
Article Chemistry, Physical

Divalent metal release and antimicrobial effects of layered double hydroxides

Jazia Awassa et al.

Summary: Resistance to antimicrobial agents is a major problem causing social and economic losses. The use of LDHs as antibacterial materials can reduce the risk of bacterial infections and antibacterial resistance. Among the LDHs studied, Zn-II-Al-III LDHs showed the best release effect.

APPLIED CLAY SCIENCE (2022)

Article Environmental Sciences

Graphene-based ZnCr layered double hydroxide nanocomposites as bactericidal agents with high sonophotocatalytic performances for degradation of rifampicin

Tannaz Sadeghi Rad et al.

Summary: The ZnCr LDH/rGO nanocomposite showed high efficiency in sonophotocatalytic degradation of rifampicin, with hydroxyl radicals, superoxide anion radicals, and generated holes playing a crucial role. A possible degradation mechanism was proposed based on intermediates.

CHEMOSPHERE (2022)

Article Engineering, Environmental

Removal of Microcystis aeruginosa by natural pyrite-activated persulfate: Performance and the significance of iron species

Xiaoxian Zheng et al.

Summary: This study investigated the feasibility of removing Microcystis aeruginosa by using ubiquitous natural pyrite to activate persulfate. The results showed that the reactive oxygen species generated during the activation process played a key role in facilitating the destabilization of algae cells and the continuous formation of oxidation layers on pyrite surface favored coagulation. The study highlighted the dual role of iron species as both catalyst and coagulant for algae removal, demonstrating the high efficiency and cost-effectiveness of using pyrite/persulfate system.

CHEMICAL ENGINEERING JOURNAL (2022)

Review Engineering, Environmental

Fe-based metal organic frameworks (Fe-MOFs) for organic pollutants removal via photo-Fenton: A review

Chunyan Du et al.

Summary: Organic pollutants have caused irreversible damage to ecosystems worldwide. Fe-MOFs, as a promising catalyst, have excellent performance in the photo-Fenton process and can be used for the treatment of organic pollutants in water.

CHEMICAL ENGINEERING JOURNAL (2022)

Article Environmental Sciences

Fe2.5Co0.3Zn0.2O4/CuCr-LDH as a visible-light-responsive photocatalyst for the degradation of caffeine, bisphenol A, and simazine in pure water and real wastewater under photo-Fenton-like degradation process

Arezou Fazli et al.

Summary: This study synthesized a sustainable composite for the degradation of caffeine, bisphenol A, and simazine. The composite of Fe2.5Co0.3Zn0.2O4 and copper chromium layered double hydroxide (CuCr-LDH) showed the best performance in the photo-Fenton-like process. Under optimal conditions, the composite efficiently decomposed over 90% of the pollution mixture.

CHEMOSPHERE (2022)

Article Green & Sustainable Science & Technology

A novel technology using iron in a coupled process of moderate preoxidation-hybrid coagulation to remove cyanobacteria in drinking water treatment plants

Yan Jin et al.

Summary: This study invented an iron-based coupled process of moderate preoxidation-hybrid coagulation, which effectively removes cyanobacterial cells and metabolites and alleviates filter unit fouling. It provides a better alternative for cyanobacterial removal in drinking water treatment plants.

JOURNAL OF CLEANER PRODUCTION (2022)

Article Acoustics

Study on a novel omnidirectional ultrasonic cavitation removal system for Microcystis aeruginosa

Hao-Ren Feng et al.

Summary: Microcystis aeruginosa, a harmful alga, can produce toxins that are extremely toxic to the liver. Ultrasonic cavitation has been considered as an effective method for removing Microcystis aeruginosa. However, current commercial ultrasonic algae removal systems require complex design and consume high energy. To address this, a novel omnidirectional ultrasonic cavitation removal system is proposed, which simplifies the configuration and reduces energy consumption. Experimental results show that the proposed system effectively damages the algal cells and achieves high removal rates.

ULTRASONICS SONOCHEMISTRY (2022)

Review Environmental Sciences

Removal of harmful algae in natural water by semiconductor photocatalysis- A critical review

Harshavardhan Mohan et al.

Summary: Harmful algal blooms (HABs) are a global problem caused by human activities such as eutrophication and climate change. Photocatalysis has been identified as the most promising solution for removing HABs, with advantages over other methods.

CHEMOSPHERE (2022)

Article Engineering, Environmental

Facilitating harmful algae removal in fresh water via joint effects of multi-species algicidal bacteria

Lei He et al.

Summary: This study successfully enriched multi-species algicidal bacteria and utilized light shading of fillers to significantly inhibit harmful algae blooms. High-throughput sequencing revealed the enrichment of algicidal bacteria, with Bacillus and Pseudomonas playing crucial roles in the algicidal process.

JOURNAL OF HAZARDOUS MATERIALS (2021)

Article Engineering, Environmental

Cubic cobalt and zinc co-doped magnetite nanoparticles for persulfate and hydrogen peroxide activation towards the effective photodegradation of Sulfalene

Arezou Fazli et al.

Summary: Cubic cobalt and zinc doped magnetite nanocatalysts were synthesized and used for activation of hydrogen peroxide and persulfate under UVA irradiation, showing good performance in degrading Sulfalene in water. The integration of Fe2.5Co0.3Zn0.2O4 improved activation efficiency, leading to 67% SFL degradation in real wastewater.

CHEMICAL ENGINEERING JOURNAL (2021)

Article Chemistry, Physical

Lead-free perovskite Cs2AgBiBr6@g-C3N4 Z-scheme system for improving CH4 production in photocatalytic CO2 reduction

Yingying Wang et al.

Summary: In this study, a Z-scheme system based on lead-free perovskite Cs2AgBiBr6 and g-C3N4 was developed for superior CH4 production in photocatalytic CO2 reduction. The system demonstrated high stability and improved CH4 selectivity, providing a promising strategy for regulating product selectivity in CO2 reduction reactions.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

Article Chemistry, Physical

Morphology controlled synthesis of α-Fe2O3-x with benzimidazole-modified Fe-MOFs for enhanced photo-Fenton-like catalysis

Wenkai Xu et al.

Summary: Surface structure engineering plays a crucial role in enhancing the photo-Fenton-like catalytic performance of alpha-Fe2O3-based photocatalysts. The rod-like alpha-Fe2O3-x material exhibited the highest activity for methylene blue degradation, attributed to its large surface area, high Fe2+ and oxygen vacancies concentrations. Density functional theory calculations confirmed that both Fe2+ ions and oxygen vacancies facilitate the dissociation of H2O2 to produce hydroxyl radicals for the degradation of organic dyes.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

Review Green & Sustainable Science & Technology

Inactivation of harmful algae using photocatalysts: Mechanisms and performance

Xinghou He et al.

Summary: Harmful algal blooms in water have become more frequent due to severe eutrophication and extreme climate. Photocatalysis is seen as an effective method for inactivating harmful algae. Recent research has focused on understanding the basic mechanisms and modifying techniques of photocatalytic materials for deactivating algae. The performance of various photocatalysts in terms of chlorophyll-a and cyanobacteria removal have been evaluated based on quantitative metrics such as quantum yields, space time yields, and figures of merit.

JOURNAL OF CLEANER PRODUCTION (2021)

Article Energy & Fuels

High performance magnetically recoverable Fe3O4 nanocatalysts: fast microwave synthesis and photo-fenton catalysis under visible-light

Gabriela Zanchettin et al.

Summary: A rapid and efficient method using microwave solvothermal treatment was developed to synthesize magnetically recoverable Fe3O4 nanocatalysts active under visible light. The synthesized nanoparticles showed improved magnetic properties and excellent activity for the degradation of reactive azo dye MO and tetracycline in a short period of time. The catalyst could be rapidly recovered through the application of an external magnetic field.

CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION (2021)

Article Engineering, Environmental

Efficient integration of plasmonic Ag/AgCl with perovskite-type LaFeO3: Enhanced visible-light photocatalytic activity for removal of harmful algae

Gongduan Fan et al.

Summary: The novel plasmonic Ag/AgCl@LaFeO3 (ALFO) photocatalyst showed enhanced photocatalytic activity in controlling harmful algal blooms (HABs) under visible light. ALFO-20% demonstrated higher light absorption capacity and lower electron-hole recombined rate compared to pure LaFeO3 and Ag/AgCl. Furthermore, ALFO-20% efficiently removed chlorophyll a from HABs, altered algae cell membrane permeability and morphology, disrupted photosynthesis and antioxidant systems, reducing secondary pollution and preventing HAB recurrence.

JOURNAL OF HAZARDOUS MATERIALS (2021)

Article Engineering, Environmental

Microcystis aeruginosa removal by peroxides of hydrogen peroxide peroxymonosulfate and peroxydisulfate without additional activators

Zhihao Chen et al.

Summary: This study demonstrates that PMS is promising in controlling HAB, effectively lasting for a longer period in realistic algae-contaminated natural water compared to H2O2. The findings suggest that PMS technology can be a useful tool for better management and treatment of algae-contaminated water.

WATER RESEARCH (2021)

Article Chemistry, Physical

Synthesis of a magnetically separable LDH-based S-scheme nano-heterojunction for the activation of peroxymonosulfate towards the efficient visible-light photodegradation of diethyl phthalate

Arezou Fazli et al.

Summary: A stable and S-scheme Fe3O4@CuCr-LDH nanocomposite was synthesized and showed enhanced photocatalytic activity for the degradation of DEP. The composite also displayed magnetic recoverability and maintained high catalytic efficiency under optimized physicochemical conditions, without causing secondary pollution to the environment. The analysis indicated low leaching of Fe, Cr, and Cu ions, demonstrating the potential for practical application in water treatment.

APPLIED SURFACE SCIENCE (2021)

Article Environmental Sciences

Chromium and cerium co-doped magnetite/reduced graphene oxide nanocomposite as a potent antibacterial agent against S. aureus

Tannaz Sadeghi Rad et al.

Summary: The study synthesized magnetite modified by Cr and co-modified by Cr and Ce, along with rGO-based nanocomposites, showing proper magnetic behavior, high porosity, and vast specific surface area. The samples exhibited high antibacterial performance against Staphylococcus aureus, with enhanced efficacy through co-doping of cerium and integration with rGO nanosheets, confirmed by SEM and AFM analyses. The plausible S. aureus inactivation mechanism of the samples was disclosed.

CHEMOSPHERE (2021)

Article Environmental Sciences

Removal of harmful algal blooms in freshwater by buoyant-bead flotation using chitosan-coated fly ash cenospheres

Xiaotong Zou et al.

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2020)

Article Environmental Sciences

Toxicity assessments of acrylamide in aquatic environment using two algae Nitzschia closterium and Scenedesmus quadricauda

Wenjing Xu et al.

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2020)

Article Materials Science, Multidisciplinary

Synthesis and characterization of magnetic zinc-copper ferrites: Antibacterial activity, photodegradation study and heavy metals removal evaluation

Monica Araceli Camacho-Gonzalez et al.

MATERIALS CHEMISTRY AND PHYSICS (2019)

Article Environmental Sciences

Influence of multi-walled carbon nanotubes on the toxicity and removal of carbamazepine in diatom Navicula sp.

Tengda Ding et al.

SCIENCE OF THE TOTAL ENVIRONMENT (2019)

Article Green & Sustainable Science & Technology

Removal of diatom Nitzschia sp cells via ozonation process catalyzed by martite nanoparticles

Alireza Khataee et al.

JOURNAL OF CLEANER PRODUCTION (2018)

Article Environmental Sciences

Effect of filtration rate on coal-sand dual-media filter performances for microalgae removal

Nour-Eddine Sabiri et al.

ENVIRONMENTAL TECHNOLOGY (2017)

Article Chemistry, Physical

Oxidative degradation of aniline and benzotriazole over PAC@FeIIFe2IIIO4: A recyclable catalyst in a heterogeneous photo-Fenton-like system

Mehdi Ahmadi et al.

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY (2017)

Article Materials Science, Multidisciplinary

Green synthesis of colloidal silver nanoparticles through electrochemical method and their antibacterial activity

Dao Tri Thuc et al.

MATERIALS LETTERS (2016)

Article Engineering, Biomedical

Bright field microscopic cells counting method for BEVS using nonlinear convergence index sliding band filter

Dong Sui et al.

BIOMEDICAL ENGINEERING ONLINE (2014)

Article Engineering, Environmental

Chemical disinfection with H2O2 - The proposal of a reaction kinetic model

Marina J. Flores et al.

CHEMICAL ENGINEERING JOURNAL (2012)

Article Chemistry, Multidisciplinary

Comparison of algal removal by coagulation with clays and Al-based coagulants

Jia-Qian Jiang et al.

SEPARATION SCIENCE AND TECHNOLOGY (2008)