Mak, S.L.; Wu, M.Y.T.; Chak, W.Y.; Kwong, W.K.; Tang, W.F.; Li, C.H.; Lee, C.C.; Li, C.Y. A Review of the Feasibility of Producing Polylactic Acid (PLA) Polymers Using Spent Coffee Ground. Sustainability2023, 15, 13498.
Mak, S.L.; Wu, M.Y.T.; Chak, W.Y.; Kwong, W.K.; Tang, W.F.; Li, C.H.; Lee, C.C.; Li, C.Y. A Review of the Feasibility of Producing Polylactic Acid (PLA) Polymers Using Spent Coffee Ground. Sustainability 2023, 15, 13498.
Mak, S.L.; Wu, M.Y.T.; Chak, W.Y.; Kwong, W.K.; Tang, W.F.; Li, C.H.; Lee, C.C.; Li, C.Y. A Review of the Feasibility of Producing Polylactic Acid (PLA) Polymers Using Spent Coffee Ground. Sustainability2023, 15, 13498.
Mak, S.L.; Wu, M.Y.T.; Chak, W.Y.; Kwong, W.K.; Tang, W.F.; Li, C.H.; Lee, C.C.; Li, C.Y. A Review of the Feasibility of Producing Polylactic Acid (PLA) Polymers Using Spent Coffee Ground. Sustainability 2023, 15, 13498.
Abstract
Coffee is one of the most popular beverages in the world. Annual coffee consumption continues to increase, but at the same time, it generates a large amount of spent coffee grounds from the brewing process, that arises environmental problems. An appropriate solution to manage these spent coffee grounds becomes crucial. Our project aims to discuss the feasibility of utilizing the spent coffee ground to synthesize polylactic acid as a recycling application for spent coffee ground. This paper will discuss the properties and potential recycling applications of spent coffee grounds, the brief production process of polylactic acid, and the potential process for converting spent coffee ground to lactic acid. From our review, it is feasible to utilize spend coffee ground as the primary sources for lactic acid production by bacteria fermentation, and further produce bioplastics, polylactic acids by ring-opening polymerization. Possible ways to improve the yield and corresponding cost analysis are also discussed.
Keywords
recycling of spent coffee grounds; lactic acid production; polylactic acid
Subject
Engineering, Industrial and Manufacturing Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
