Mon, Jun 24, 2024 page3

• Barista finds success in recycled coffee beans

  SUSTAINABILITY Coffee grounds have traditionally been used as fertilizer, but this entrepreneur has created a business by recycling them into mosquito repellent

  • Staff writer, with CNA
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  A Changhua City barista has found commercial success by turning used coffee grounds into recycled products.

  Aside from brewing coffee with the beans grown by his parents atop the city’s Baguashan (八卦山), barista Chang Chih-min (張智閔) also sells merchandise like mosquito repellent incense, charcoal, soaps and even tea made from the skins of coffee cherries in his cafe.

  Chang’s parents began growing coffee more than 10 years ago thanks to a program started by the Changhua City Farmers’ Association to help pineapple, longan berry and lychee farmers switch to new crops.

  

  Barista Chang Chih-min processes coffee grounds in an undated photograph in Changhua City.

  Photo courtesy of Chang Chih-min

  After opening Chang Coffee to help his parents sell their new crop, he said he soon found that the coffee industry was wasteful in how it used resources.

  He said he started looking into sustainable recycling practices after seeing the massive amounts of coffee grounds that were the byproducts of his business.

  As coffee beans are often the only commodity farmers need to harvest, the rest of the fruit is usually thrown away, Chang said.

  The coffee business is also energy intensive he said, adding that coffee beans require a lot water to be cleaned before use, and brewing consumes a lot of electricity and heat.

  Chang started looking into the possibility of using all that the coffee fruit has to offer, with the aim of making his business greener and more sustainable.

  Traditionally in Taiwan, coffee grounds are sometimes reused as fertilizer or deodorizer Chang said.

  However, studies from other countries show that that coffee grounds have insect-repelling qualities that have yet to be commercially explored, he added.

  The study prompted Chang to explore business opportunities in reusing ground coffee. He eventually teamed up a former classmate who helped him design mosquito-repellent incense made from used coffee grounds.

  After much trial and error, they tweaked their recipe and launched their mosquito-repelling incense, which is now sold as incense coils.

  Chang said the popularity and commercial success of the repellent encouraged him to dive further into sustainable recycling and create other merchandise made from coffee byproducts such as soaps and charcoal.

  “Converting coffee grounds into charcoal, through pyrolysis takes just a day, while traditional wood would require a month or so,” he said. “Drastically reducing the time for pyrolysis means a reduction in energy consumption. In addition, using coffee soaps could cut handwashing time by one-third, which also means a one-third reduction in water consumption.”

  With the success of his incense, Chang said local supermarket and convenience store chains had shown interest in carrying his products.

  In the spirit of his sustainable lifestyle, he said he is trying to develop solid fuel sticks made from used coffee grounds.

  Once he creates the product, he said coffee ground processing plants would be able to recycle it to power their operations, thus achieving self-sustainability, which Chang called the ultimate goal of sustainable recycling.
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