Wolfgang Kummer

Title: Wolfgang Kummer: Innovator in Molybdenum Recovery and Calixarenes

Introduction

Wolfgang Kummer is a notable inventor based in Goslar, Germany. He has made significant contributions to the field of materials science, particularly in the recovery of molybdenum and the development of calixarenes. With a total of 8 patents to his name, Kummer's work has had a substantial impact on industrial processes.

Latest Patents

One of Kummer's latest patents focuses on the recovery of molybdenum from molybdenum-bearing sulfide materials through bioleaching. This innovative method involves contacting the material with a leaching solution containing iron compounds and specific microorganisms. The process is carefully controlled to optimize the molar ratio of dissolved ferric iron to dissolved molybdenum. Kummer's research indicates that high concentrations of ferric iron enhance the growth of iron-oxidizing microorganisms, allowing for efficient bioleaching of molybdenite. The maximum dissolution rates achieved in his experiments vary based on reactor configurations, with significant rates observed in both agglomerated materials and stirred reactors. Ultimately, his method can achieve up to 89% removal of molybdenum from the sulfide material.

Another significant patent by Kummer involves the production and use of calix[4]arenes, which are capable of effectively binding alkali metal ions such as sodium and potassium. This invention highlights the versatility of calixarenes in transporting these ions across phase boundaries, showcasing their potential applications in various chemical processes.

Career Highlights

Throughout his career, Wolfgang Kummer has worked with prominent companies, including H.C. Starck GmbH & Co. KG and Bayer Aktiengesellschaft. His experience in these organizations has contributed to his expertise in materials science and innovation.

Collaborations

Kummer has collaborated with notable colleagues, including Ulrich Krynitz and Mathias Benz. These partnerships have likely enriched his research and development efforts, leading to groundbreaking advancements in his field.

Conclusion

Wolfgang Kummer's contributions to the recovery of molybdenum and the development of calixarenes demonstrate his innovative spirit and commitment to advancing materials science. His patents reflect a deep understanding of chemical processes and their industrial applications.