RESUMO
Textile industry wastewater containing toxic dyes and high COD poses environmental hazards and requires treatment before discharge. This study addresses the challenge of treating complex textile wastewater using a novel integrated system. The system combines sedimentation, screening, adsorption, and an optimized solar photo-Fenton process to provide a sustainable treatment solution. A novel parabolic collector with a larger absorber tube diameter enhances solar radiation utilization at lower catalyst concentrations. This design is versatile, treating all types of wastewaters, especially those that contain colors, smells, solid and suspended materials, in addition to its importance for the treatment of difficult substances that may be present in industrial and sewage wastewaters that are difficult to dispose of by traditional treatment methods. Multivariate experiments optimized key photo-Fenton parameters (pH, catalyst dose, etc.) achieving significant pollutant removal (85% COD, 82% TOC, complete color) under specific conditions (pH 3, 0.2 g/L Fe(II), 1 mL/L H2O2, 40 °C and 100 L/h flow rate after 60 min irradiation). Kinetic modeling revealed second-order reaction kinetics, and multivariate regression analysis led to the development of models predicting treatment efficiency based on process factors. The key scientific contributions are the integrated system design combining conventional and advanced oxidation technologies, novel collector configuration for efficient utilization of solar radiation, comprehensive process optimization through multivariate experiments, kinetic modeling and predictive modeling relating process factors to pollutant degradation. This provides an economical green solution for textile wastewater treatment and reuse along with useful design guidelines. The treatment methodology and modeling approach make valuable additions for sustainable management of textile industry wastewater.
RESUMO
PURPOSE: To evaluate the level of awareness and knowledge about glaucoma among Jordanians and determine the relationship between glaucoma knowledge and selected variables. METHODS: This was a descriptive and cross-sectional study conducted at a central hospital. Face-to-face interviews were performed to obtain sociodemographic data and information about glaucoma from Jordanian participants attending different outpatient clinics of Jordan University Hospital (JUH). A convenient sample of 488 participants aged 16 years and above were recruited. Consent form was signed by each participant before starting the interview. RESULTS: The mean age of the study population was 45.71 ± 15.44 years, ranging 16 to 89 years. There were 163 (33.4%) females and 325 (66.6%) males. 81.6% of participants had heard of glaucoma. Only 34.2% of participants defined glaucoma correctly. 52.4% of participants had a low level of knowledge about glaucoma. The main source of information was from family members, relatives, and friends (66.6%); however, this source inversely influenced the level of knowledge. CONCLUSIONS: The results of this study indicate a high level of awareness of glaucoma among Jordanians but low-to-average knowledge about it. Health education programs should be activated at all levels of health- and eye-care services to increase knowledge about glaucoma and prevent the irreversible loss of vision due to the second main cause of blindness worldwide.
