Renewable Resource‐Based Lubricating Greases from Natural and Synthetic Sources: Insights and Future Challenges

Abstract

Greases enhance most mechanical equipment in terms of joint performance and operation age by reducing friction and wear. However, they are also considered a dangerous source of soil and water pollution because of their synthetic nature. Renewable resource-based materials are a safe and environmentally friendly solution. In the present work, a comprehensive study is conducted to evaluate the performance of existing synthetic and biodegradable greases. This work also provides insights into existing literature and presents ideas for future development through general recommendations regarding the use of renewable resource-based ingredients as a replacement for traditional synthetic materials in conventional greases.

An Environmentally Friendly Nb–P–Si Solid Catalyst for Acid-Demanding Reactions

“…Esterification of fatty acids with high boiling polyalcohols is a potentially valuable reaction for industry because the esters formed can be used as biolubricants. 41 Alternatively, esterification of fatty acids with methanol can be used to produce biodiesel. A great number of heterogeneous catalysts have been proposed for these reactions.…”

The Grease Formulation Using Waste Substances from Palm Oil Refinery and Other Industrial Wastes: A Review

“…MoS 2 is more efficient and economical than graphite in Li, Ca, Na and Li-Ca grease due to its fewer wear properties. In recent years, environmental concerns have necessitated focusing on renewable resource-based components for grease composition (Abdulbari et al, 2015). Thus, recycling waste cooking oil and SBE, which are disposed of freely after expensive treatment into the environment, will be a good option to address environmental issues such as greenhouse gas emissions, odour pollution and non-biodegradable.…”