Banca de DEFESA: ANGELINA FRANCISCA KULIAKITA JOSÉ

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : ANGELINA FRANCISCA KULIAKITA JOSÉ
DATE: 29/01/2026
TIME: 09:00
LOCAL: meet.google.com/dfg-erzp-dwq
TITLE:

Study of the Efficiency and Kinetics of a Solar Pasteurizer in the Decontamination of Groundwater.

KEY WORDS:

Solar pasteurization; Water quality; Inactivation kinetics; Water treatment; Sustainability.

PAGES: 61
BIG AREA: Engenharias
AREA: Engenharia Sanitária
SUMMARY:

Access to safe drinking water remains a major challenge in regions with limited sanitation infrastructure. In this context, solar water pasteurization emerges as a sustainable, low-cost and easily applicable alternative for water treatment. This study aimed to evaluate the thermal efficiency and microbial inactivation kinetics of a solar pasteurizer applied to groundwater decontamination. The experiments were conducted using a solar pasteurization system operating by natural circulation, with monitoring of temperature, solar irradiance and microbiological parameters. The results showed that the system was able to raise water temperature to values between 65 °C and 68 °C, achieving complete inactivation of Escherichia coli. Kinetic analysis indicated first-order behavior, with an average logarithmic reduction of 2.15 and a decimal reduction time of approximately 84 minutes. Thermal efficiency ranged from 7.9% to 8.9%, proving sufficient for effective pasteurization. The findings confirm that solar pasteurization is a viable, sustainable and efficient technology for decentralized water treatment, especially in regions with high solar incidence. The results demonstrated that the solar pasteurizer was able to raise the water temperature to levels adequate for microbiological inactivation, promoting a significant reduction in microbial load. Kinetic analysis indicated a direct relationship between thermal exposure time and the rate of microorganism inactivation. It is concluded that solar pasteurization presents high potential as an alternative technology for the treatment of groundwater, contributing to the improvement of water quality and the promotion of public health in vulnerable communities.

COMMITTEE MEMBERS:
Externa à Instituição - EDIVÂNIA SOUZA DE LIMA VASCONCELOS
Interno - MARCUS METRI CORREA
Presidente - ***.296.924-** - MARILDA NASCIMENTO CARVALHO - UNICAP