Category: Sustainability News (Page 7 of 63)

Every year, the Office of Sustainability makes a tremendous effort during Orientation to teach as many incoming students, staff, and faculty as possible about Tufts’ sustainability commitments and initiatives, its waste management practices, sustainable commuting options, and more. We also try to reduce the University’s carbon footprint by making as many Orientation events as possible zero-waste, ensuring that materials are either recycled or composted. 

This year was no exception. Throughout Orientation, the OOS made presentations on sustainability at Tufts to a total of 511 new students, faculty, and staff across our many graduate schools, including the Dental School, the Friedman School, the Fletcher School, the Sackler School of Biomedical Sciences and the Cummings School of Veterinary Medicine, to name a few. In addition, the OOS trained 220 Tufts Dining employees on proper recycling rules to ensure they were well-informed to sort recyclables, compostables, and trash in the kitchens and cafes. 

The OOS also tabled at events for a wide range of programs offered at Tufts. We reached about 500 new students by speaking directly with them at events held by their respective schools. Two hundred of these students were new first-year students. The remaining 300 were graduate students from the Tufts School of Medicine, the Graduate School of Engineering, the Fletcher School, and Urban & Environmental Policy & Planning, among others.

At all our various tabling events, the OOS distributed a total of 1,340 informational brochures on sustainability issues ranging from recycling, to biking, to sustainable commuting to Tufts’ many campuses. The most widely distributed and seemingly the most popular were the Eco-Maps, which identify the locations of important sustainability landmarks on the Medford/Somerville campus, such as recycling and compost bin locations, bike racks, hydration stations, and even a geothermal heat pump. You can find an interactive Eco-Map that spans all Tufts campuses here, and online versions of our other brochures here.  

In addition to spreading awareness about sustainability at Tufts, the OOS worked to make Orientation itself more sustainable by diverting waste from landfills. Throughout the week, 34 students made 16 events zero-waste, meaning all waste accumulated was either recycled or composted. This effort diverted waste from landfills/incinerators from 14,000 meals. From these 14,000 meals, 232 bags of compost and 72 bags of recycling were collected. 

Additionally, twenty of our Eco-Reps met and educated residents as they were moving into their dorms. The OOS also created seven new educational Move-In recycling signs and OOS workers collected 192 pounds of Move-In-related plastic film to be recycled into plastic benches through Trex.

Last May during Move-Out, the OOS diverted three tractor-trailer loads of reusable items from the waste stream and worked with the non-profit GradBag to clean, test and organize them into another Back-to-School Sale. Incoming students served by the FIRST Resource Center, a community for first-generation, low-income, and undocumented students, were able to choose items first and without cost. About 75 of these students took advantage of these free goods to outfit their dorm rooms and collect winter clothing and other school supplies.

The remaining items were sold back to returning students and staff on Labor Day. Several offices and organizations also benefitted from the recovered items: 

• Tufts Mountain Club received sleeping bags and pads
• Tufts Sports Medicine was given various crutches, braces, and weights
• 233 items totaling 90 pounds of dishes were returned to Tufts Dining
• Around 300 books were donated to More than Words, a job training and youth development program that employs Boston’s most vulnerable youth in their bookselling business
• Non-perishable food donations were given to Project Soup, a Somerville food pantry
• All current textbooks were offered to the FIRST Resource Center for low-income, first-generation and undocumented students to use. 

All in all, it was a very successful Move-In and Orientation Week for sustainability at Tufts. The OOS will continue to work to make more Orientation events zero-waste and to reuse as many items donated from Move-Out as possible to divert this waste from landfills. We will also work throughout the year on publicizing and monitoring Tufts’ sustainability initiatives—this is just the beginning!  

Blog post written by exiting Programs Intern, Celia Bottger.

On Friday, August 2, Eco-Ambassadors visited Jordan Dairy Farms Heifer Facility in Spencer, MA to learn about organics to energy anaerobic digestion. Jordan Dairy Farms partners with Vanguard Renewables, a company that engineers and operates anaerobic digesters, to repurpose food waste and manure as bedding and fertilizer. The trip demonstrated how closing the waste cycle can be cost effective and energy efficient.

Inputs: Vanguard Renewables’ food industry customers, including manufacturers, breweries, and grocery stores, send their depackaged food waste to Jordan Dairy Farms. The farm receives about 120 tons of food waste each day, between five and ten truckloads. The food waste is added to the first anaerobic digester, along with manure produced by the farm’s cows.

What Happens: Incoming organic waste is filtered for plastic and other solid contaminants, then mixed with waste already inside the first digester. The methanogens, or digesting bacteria, can only survive a 0.5 degree temperature change in a period of 12 hours, so convection keeps the mixture at a steady 104 degrees. Waste air passes through three successive filters– cedar chips, activated carbon, and carbon– to eliminate odors.

After five days in the first digester, the mixture is transferred to the second digester, where it will spend 25 days. The organic waste is mixed at various heights throughout the digester to ensure uniform temperature and pH. 200 different sensors monitor the digester at all times. The biogas produced in the second digester is about 65% methane, with some carbon dioxide and hydrogen sulfide. The gas is captured in two membranes stretched above the digester.

Outputs: The gas is sent to a combustion engine connected to a generator, producing one megawatt of power every hour. The liquid is extracted from the digested waste and becomes organic fertilizer for crops, while the leftover solids become soft, dry bedding for cows. As part of their partnership, Vanguard Renewables shares all digestion products with Jordan Dairy Farms.

Vanguard Renewables operates five anaerobic digesters on small, family dairy farms across Massachusetts, and receives food waste from 65% of Massachusetts food manufacturers. Anaerobic digestion diverts organic waste from the landfill and reduces greenhouse gas emissions from said waste by more than 85%. Anaerobic digestion shows that renewable technologies both protect the environment and stimulate the economy.

Composting is a great way to divert waste from the landfill, fertilize local gardens and agriculture, and increase awareness of food waste. However, during the hot and humid summer months, unpleasant smells and pesky bugs can discourage even the most committed composters. The following tips help address common summer composting problems.

1. Store food scraps in the fridge or freezer

Does your compost pile up faster than you can take it out? Try keeping it in the fridge or freezer between collection days, if you are on a curbside pick up program, or until you can take it to your regular drop-off site. The cooler temperatures slow decomposition, reducing odors. Designate a food storage container or a reusable, sealable plastic bag for compost. Just don’t forget about your compost in the fridge or freezer!

2. No fridge space? Use a smaller compost bin and empty it daily

In our office, we switched from collecting compost in a 2 gallon bucket to a re-purposed sugar dish. It fills up fast so we take it out daily, instead of once a week. Taking turns makes this sound much less daunting! Plus, our food scraps don’t have time to get smelly, and the ants and fruit flies stay away. We will switch back to the larger bin when temperatures cool. Almost anything can be used as a compost bin, just make sure it has a lid and doesn’t leak.

3. Set a trap for fruit flies and gnats

Pesky fruit flies and gnats invading your kitchen space? Try trapping them in a jar or glass with a mixture of equal parts apple cider vinegar, dish soap, and water. You can make a funnel out of paper and tape it to the container so it points down, but does not get wet. Fruit flies will be attracted to the sweet smells and fly down into the jar, but they won’t be able to get back out!  Read the full instructions here.

4. Change out the compost bag or liner more often

Every three to four days, or when your compost starts to get smelly, replace the bag or liner in your compost container. You can put the old food scraps in a new bag, transfer them to the fridge or freezer, or keep them outside in a cool, dry place until collection day or until you can bring the scraps offsite. Try setting a recurring reminder on your phone to change the compost liner. 

5. Clean out the bin after emptying it

It only takes a few minutes to wash out your compost bin with soap and water. You can even wipe it out with spray cleaner and a rag. Cleaning your bin gets rid of any spills or leaks that might build up and cause odors. Make sure to let the bin dry before putting a new bag or liner in!

6. Add paper towels, napkins, and coffee grounds

Remember that compost is more than just food scraps! Adding paper towels and napkins to your compost absorbs liquids, and adding coffee grounds decreases unpleasant odors. Tea bags will also work if you’re not a coffee drinker. All paper towels and napkins can be composted, even bleached paper.

7. Bring the entire bin outside

If you use a compostable bag as a bin liner and it leaks, bring your kitchen bin outside and transfer the contents of the bag there. This way you avoid dripping smelly liquid everywhere. To avoid leaks, try double bagging, or line your compost bin with a BioBag and paper towels. While the bin is outside, you can even take the opportunity hose it out and let it dry in the sun.