Company Filing History:
Years Active: 2007-2017
Title: Innovations of Juu-En Chang
Introduction
Juu-En Chang is a notable inventor based in Tainan, Taiwan. He has made significant contributions to the field of materials science and environmental engineering. With a focus on synthesizing advanced materials and wastewater treatment technologies, Chang holds 2 patents that reflect his innovative approach to solving complex problems.
Latest Patents
One of his latest patents is a method of synthesizing copper selenide powder. This invention relates to a hot-injection method where a proper amount of a reducing agent is added to a mixed solution of copper cationic and selenium anionic solutions. The mixed solution is maintained at a temperature of 230°C for 40 minutes to obtain copper selenide powder. The resulting powder can be synthesized by adjusting the amount of the reducing agent added to the solution.
Another significant patent is the integrated technology in the sequential treatment of organics and heavy metal ions in wastewater. This invention addresses the challenges posed by low biodegradable organics and heavy metal ions found in wastewater from surface finishing processes. The treatment involves oxidizing low biodegradable organics using a Fenton process at a pH of 2 to 5 and a temperature of 20°C to 100°C. Subsequently, heavy metal ions are treated using a ferrite process at a pH of 8 to 12 and the same temperature range. This integrated technology is advantageous for improving wastewater treatment efficiency and product quality.
Career Highlights
Juu-En Chang is affiliated with National Cheng Kung University, where he contributes to research and development in his areas of expertise. His work has garnered attention for its practical applications in both industrial and environmental contexts.
Collaborations
Chang has collaborated with notable colleagues, including Hung-Ta Chen and Min-Shing Tsai, to advance research in his field. Their combined efforts have led to innovative solutions that address pressing environmental challenges.
Conclusion
Juu-En Chang's contributions to the fields of materials science and environmental engineering exemplify the impact of innovative thinking on real-world problems. His patents reflect a commitment to advancing technology for better environmental management and material synthesis.