May 12-13 Brian

My name is Brian C.  I came from Taiwan, and , I am currently majored in chemical engineering. I am extremely interested in renewable energy which is the reason I am on this program.

May 9

Our abroad group airline reservation to Stockholm was canceled 10 hours before departure; the abroad group was broken into 5 groups, the majority of the abroad group us split into 2 groups arriving separately on 11th. Dr. Hodge’s group who arrived on early (May 11th) went to the museum Vasa and scout out Gamla Stan the location that we will be visiting tomorrow, after the rest of the group member have arrived, the entire abroad group was exhausted after arriving at the hostel.

passing out

Mario passing out while working on blog post.

May 12

The group has a breakfast in the hostel cafeteria, the food provided was different from most US hostels, our breakfast mostly consist of a sandwich components, ham, cheese, bread, tomato etc. The most interesting thing in the cafeteria was the fresh orange juice squeezing machine, it was delicious.

After breakfast, the entire group went to Gamla Stan, The town was set up during the 1300 century. There are about 3000 people living in the old city today. Most buildings are from the 1700 and 1800 century. (2010) afterwards for a quick tour, until noon, Gamla Stan is the old town of Stockholm consists of multiple monuments and museum, souvenir shops. It was a great tour however we had to meet up with Bjorn Cederquist the designer of GlashusEtt at noon.

Ganla Stan

me in a picture at Gamla Stan

We arrived at Hammarby Sjostad GlashusEtt, an eco friendly building, The building is build out of glass windows, present a clean and futuristic look. Multiple special designs are also implemented into the building, solar panel generator, Hydrogen fuel cell, automatic blinder, vacuum sewage system, rain water collector.


picture of GlashusEtt (2002)


design description of GlashusEtt (2002)

Bjorn Cederquist, the city planner of the neighborhood, gave us a presentation focusing on the Hammarby neighborhood, mainly talking about how the planning requires multiple authorities from the government, designer, investor and the people in hammarby. The strict government policy and active design planning re

sults in an extremely well organized city with modern eco-friendly design, where people in the city can enjoy a suburban life style.


neighborhood of Hammarby Sjostad


sidewalk of Hammarby Sjostad neighborhood.


weird bridge design in Hammarby Sjostad neighborhood, high power lights are installed on the bottom of the bridge, the bridge its self is light up by the reflectors installed on top of the bridge, capturing light reflected from the river.


apartment building around Hammarby Sjostad neighborhood.


After the presentation the group rushes back to the hostel, collect our luggage and start our overnight journey on a train to Lulea.

May 13

We attend the biomass gasification of methanol production lecture by Thomas Ekbom, lecture was pretty interesting, Thomas provide us with a prize for answering some questions in the lecture. The lecture talks about the advantage of methanol and slowly work its way into the production method of methanol, then into the challenges that the methanol face as a fuel in both marketing perspective and production difficulties. Thomas ends the lecture with another challenge, this time Thomas have us split into 2 groups, the questions were consist of off topic material, it was a lot of fun.

After the lecture, our group had lunch at a Swedish buffet right beside a beautiful lake. Dr. Hodge showed us around the Liquid hot water pretreatment lab, liquid hot water pretreatment of wood chip to extract hemi-cellulose, which is a polymer similar to cellulose, however  the polymer include xylanglucuronoxylanarabinoxylanglucomannan, and xyloglucan sticking out of cellulose chain (2014), which makes it much easier for the enzyme to digest to produce glucose. The wood chips are fitted into a pressure cooking cylinder, and then it was heated up to 170 deg C in the autoclave for 2 hours and 30 minutes. Processes with pictures are shown down below.

liquid hot water pretreatment  step 1

step 1. transfer wood chips to pressure container.

liquid hot water pretreatment

step 2 pack wood chip to 2/3 of the pressure container.

liquid hot water pretreatment

step 3. add 100ml of water to the pressure container..

liquid hot water pretreatment

step 4. cap the pressure container seal it tight with wrench.

liquid hot water pretreatment

step 5. place pressure container into 170 deg C autoclave.


liquid hot water pretreatment

step 6. slowly cool the container with water, and gently open with wrench.

During the 2 and a half hour wait, we went to a conference room to work on our blog update, while  Dr. Hodge give us a brief lecture on the liquid hot water pretreatment along with the gasification and the final biofuel synthesis process.


Nick studying hard

biofuel synthesis

Dr. Hodge’s biofuel synthesis flowchart.


After the long day of lectures and tour, we went back to the cabin and cook our selves some delicious Swedish meatball pasta, layback and play card games until sunsets.

1. Svenska, S. p. (2006). The Old Town is Stockholm’s original area. Lulea, Sweden: R.E.G. Retrieved May 14, 2014, from

2.Tengbom. (2002). Glass House One/GlashusEtt. Hammarby Sjöstad, Stockholm, Sweden: Author. Retrieved May 15, 2014, from

3. Properties of Saturated Steam – SI Units. (n.d.). In Retrieved May 15, 2014, from

4.Structural comparison to cellulose (2014, February 9). In Hemicellulose. Retrieved May 14, 2014, from


3 responses to “May 12-13 Brian

  1. After touring Hammarby Sjostad, I found it very interesting that the city has so many people on board with using renewable energy. They care about making their city environmentally friendly and have high standards for themselves. The city is very innovative and it implements various experimental forms of renewable energy to help reduce their carbon footprint. Even though Bjorn Cederquist said all of the experimental equipment is not always successful, they are not afraid to try new things when it comes to renewable energy. I think in the United States we should try to have more of a positive attitude about renewable energy similar to Sweden.

    • I agree, the US should definitly start working on renewable energy, but there are just not enough people care and willing to invest on these changes.

    • I 100% agree, eventhough the US produces the most renewable energy, it only count towards a small percentage of the total energy usage. Also people and government in the US doesnt support renewable energy, as it requires investment and will damage the sales large coal supplier, and also food prices, as we currently uses crops to produce ethanol.

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )


Connecting to %s