An in-situ approach to cyanobacterial harmful algal blooms degradation of microcystin-LR cyanotoxins using TiO2 photocatalysts coated on nylon mesh supports

نویسندگان

چکیده

Dispersed and immobilized photocatalytic titanium dioxide (TiO2) nanoparticles were investigated for the removal of microcystin-LR (MC-LR) cyanotoxin in water. TiO2 concentrations (0.25 g/L, 0.025 0.0025 0 g/L) compared to coated on nylon net supports uncoated nets determine MC-LR degradation performance. Adsorption onto dispersed was tested 1 h prior ultraviolet (UV) light exposure, maximum adsorption observed 1%. With UV 0.25 g/L degraded by 99% over a 2-hour time period, while did not cause significant removal. spray 2x, 5x, 8x with Nafion-TiO2 composite stability, where 2x lacked attachment stability 5x net. testing resulted 0% 13% adsorption, respectively. The removed 96%, 64%, 10% UV, indirect no exposure 2 h. fit pseudo first-order kinetics, rate constants k = 0.0375 min-1 0.0264 nets, Overall, study indicated photocatalysts are comparable provide an immobilization approach in-situ nanoparticles.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Cyanobacterial Harmful Algal Blooms: Chapter 38: Integrating Human and Ecological Risk Assessment: Application to the Cyanobacterial Harmful Algal Bloom Problem

Environmental and public health policy continues to evolve in response to new and complex social, economic and environmental drivers. Globalization and centralization of commerce, evolving patterns of land use (e.g., urbanization, deforestation), and technological advances in such areas as manufacturing and development of genetically modified foods have created new and complex classes of stress...

متن کامل

Occurrence of Cyanobacterial Harmful Algal Blooms Workgroup report.

Appreciation is given to all those whose efforts made the production of this book possible. Thanks are due to the editors, Anthony Fristachi, US Environmental Protection Agency, Office of Research and Development, Cincinnati, Ohio and Jim Sinclair, PhD, US Environmental Protection Agency. Thanks are also due to Dr. Jeffrey Johansen of John Carroll University for his review and revisions to the ...

متن کامل

Sentinel Animals in a One Health Approach to Harmful Cyanobacterial and Algal Blooms.

People, domestic animals, and wildlife are all exposed to numerous environmental threats, including harmful algal blooms (HABs). However, because animals exhibit wide variations in diet, land use and biology, they are often more frequently or heavily exposed to HAB toxins than are people occupying the same habitat, making them sentinels for human exposures. Historically, we have taken advantage...

متن کامل

Cyanobacterial Harmful Algal Blooms: Chapter 2: A Synopsis of Research Needs Identified at the Interagency, International Symposium on Cyanobacterial Harmful Algal Blooms (ISOC- HAB)

Evidence indicates that the incidence of cyanobacterial harmful algal blooms (CHABs) is increasing in spatial extent and temporal frequency worldwide. Cyanobacterial blooms produce highly potent toxins and huge, noxious biomasses in surface waters used for recreation, commerce, and as drinking water sources. The Interagency, International Symposium on Cyanobacterial Harmful Algal Blooms (ISOC-H...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Journal of environmental chemical engineering

سال: 2022

ISSN: ['2213-2929', '2213-3437']

DOI: https://doi.org/10.1016/j.jece.2022.108301