Compact device for in situ ultraviolet-visible spectrophotometric measurement of photocatalytic kinetics

Article Chemistry, Analytical

Low-Cost Photoreactor to Monitor Wastewater Pollutant Decomposition

Alberto Ruiz-Flores et al.

Summary: Water quality is a crucial indicator of human environmental impact, and its control is vital to prevent irreversible damage. The growth of the chemical industry has led to the development of new compounds, such as dyes and medicines, resulting in recalcitrant pollutants in wastewater and drinking water. This study presents a laboratory-scale photoreactor prototype that can decompose colored pollutants using photocatalysis, along with a software application for monitoring and managing the degradation process. The device utilizes Arduino as a low-cost monitoring system and has shown the ability to accelerate the photodegradation reaction.

SENSORS (2023)

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Article Engineering, Environmental

Comparing the efficiency of solar water treatment: Photovoltaic-LED vs compound parabolic collector photoreactors

Miguel Martin-Somer et al.

Summary: This study examines how to optimize the efficiency of solar light utilization in various UV-based photochemical water treatment processes. The use of sunlight in compound parabolic collector (CPC) photoreactors is compared to using solar energy for electricity generation in photovoltaic (PV) power systems that power LED lighting sources. Seven different solar processes were investigated for chemical oxidation and bacterial inactivation. The results showed that the most efficient process for oxidation of chemicals is PV-UVC LED+H2O2, while the most efficient process for bacterial inactivation is PV-UVC LED+H2O2. The study highlights the need to evaluate the optimal approach in reactor engineering for water-energy applications, considering the current and future improvements in PV and LED technology.

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING (2023)

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Review Materials Science, Multidisciplinary