{"id":12951,"date":"2015-01-09T16:18:34","date_gmt":"2015-01-09T21:18:34","guid":{"rendered":"https:\/\/blogarchive.utc.edu\/news\/?p=12951"},"modified":"2015-01-12T11:16:16","modified_gmt":"2015-01-12T16:16:16","slug":"engineering-students-grow-edible-plants-fish-aquaponics-system","status":"publish","type":"post","link":"https:\/\/blogarchive.utc.edu\/news\/2015\/01\/engineering-students-grow-edible-plants-fish-aquaponics-system\/","title":{"rendered":"Engineering students grow edible plants, fish, in aquaponics system"},"content":{"rendered":"

\"engr-2014-aquaponics-lab-28\"<\/a>People who live in developing countries sometimes don\u2019t grow their food the old fashioned way.\u00a0 Instead, their food comes donated in a great big fish tank–an aquaponics system where the fish feed the plants, and the humans harvest fruit, veggies, and fish.<\/p>\n

\"Aquaponics<\/a>A group of UTC engineering students in a senior interdisciplinary design class successfully built a small scale freshwater automated aquaponics system with an innovative automated water changing system; \u00a0instrumentation installed to measure nitrates, nitrites, ammonia, and pH balance; a pumping system; a swirl and sand filter to remove solid waste from the tank; and several different methods of growing plants.\u00a0 Mechanical, industrial, and electrical engineering students were all part of this team.<\/p>\n

\u201cI love everything about this project!\u201d exclaimed Christy Rigsby, mechanical engineering major who will graduate in May and the student project manager for the group.\u00a0 \u201cThis method takes one-eighth of the water normal farming does to be successful.\u201d<\/p>\n

The system features three aquaponic raft vegetation racks.\u00a0 A sump pump delivers nutrients into the vegetation bed feed line.\u00a0 Plants in a basket are partially submerged while the upper part of the basket rests above the water line.\u00a0 Duckweed, a secondary food source for the fish, is grown in a bin fed with waste water after it\u2019s been run through a filter.\u00a0 \u00a0A media bed uses an ebb and flow technique–water is pumped from the sump tank, until a bell siphon is activated.\u00a0 Then the bed drains rapidly back into the sump tank.<\/p>\n

While the swirl and sand filter separates solids, the breakdown of the solids helps nourish the plants.\u00a0 As the project continues, the hope is when the solids are captured, they can be dried in a small field and later sold for fertilizer.<\/p>\n

Ultimately, the goal of this ongoing project is to feed planted vegetation solely with the fish waste products. Tilapia, chosen because it could be densely packed in the 125-gallon tank, have grown from a quarter of an inch in September to six inches.\u00a0 The rapidly growing plants have yielded bell peppers, Jalapenos, Swiss chard, lettuce, and tomatoes for students to taste.\u00a0 This smaller tank offers some intriguing possibilities for growing edible plants in a home or office setting.<\/p>\n

\"Aquaponics<\/a>Rigsby has enjoyed working on the system so much she changed her focus in mechanical engineering from energy to machine, because she enjoys studying flow rates.\u00a0 She has been an intern with Tuftco and plans to pursue a master\u2019s degree.\u00a0 As project manager in her UTC design class, Rigsby organized and delegated. Students Andrew Boring, Dennis Doyle, Anthony Escandon, Jackson McKissick, and Michael Jambon also worked with Rigsby.<\/p>\n

\u201cI like to be in charge,\u201d she said with confidence.<\/p>\n

She says she\u2019s learned a lot in engineering classes she described as \u201cjust the right size\u201d with professors who are approachable.<\/p>\n

\u201cWe learn a lot more at UTC because we aren\u2019t afraid to ask questions,\u201d she explained.\u00a0 \u201cWe really are a big, happy family.\u201d \u00a0Rigsby recently married her husband Garrett, a UTC computer science major.\u00a0 Rigsby is also the daughter of two UTC computer science alumni, dad James Coleman \u201984 and mom Rebecca Coleman, \u201989.<\/p>\n

Anthony Escandon, who served as the student lead mechanical engineer for this project, was responsible for fluid flow analysis, sizing of plumbing and valves, writing code for virtual instrumentation, and data collection.\u00a0 The class was taught by Dr. Trevor Elliott and Dr. Ed McMahon.\u00a0 Elliot said Escandon\u2019s interest in the project was obvious–he basically lived in the lab.<\/p>\n

\u201cOur professors at UTC gave us a broad idea of what we could do for our project.\u00a0 They let us take the initiative, so they let us take the project where we wanted it to go.\u00a0 If we had not had that freedom, it wouldn\u2019t have been as fun or turned out as well,\u201d Escandon explained.<\/p>\n

Escandon graduated from UTC in December.\u00a0 He will begin work in spring 2015 at Florida Institute of Technology engineering master’s program, where he has earned a partial scholarship.<\/p>\n

He\u2019s has come a long way from his days in high school, when his family moved several times.\u00a0 He dropped out of school in 11th<\/sup> grade, got his GED, and then returned to his California roots.\u00a0 It took him several years to find his way to his family\u2019s Tennessee construction company, where he worked for several years. In 2009, he enrolled at Chattanooga State where he spent three years, and then transferred to UTC to study mechanical engineering.<\/p>\n

\u201cThe classes were harder than they were at Chattanooga State,\u201d Escandon explained.\u00a0 \u201cI decided I would also go to school during the summer, and over time, I gained more and more confidence.\u00a0 The professors here are great,\u201d he said.<\/p>\n

Now 30 years old, Escandon looks forward to studying in Florida.\u00a0 His research interests focus on offshore renewable energy, specifically ocean thermal energy conversion.\u00a0 The temperature differential between surface and deep water can be used to generate electricity, a new field of technology.<\/p>\n

\u201cIt\u2019s always been in the back of my mind to delve into ocean engineering,\u201d Escandon said. \u201cWhen I was younger and lived I California, my family had a drive to get to the beach.\u00a0 It\u2019s always been someplace special to me.\u201d<\/p>\n","protected":false},"excerpt":{"rendered":"

People who live in developing countries sometimes don\u2019t grow their food the old fashioned way.\u00a0 Instead, their food comes donated in a great big fish tank–an aquaponics system where the fish feed the plants, and the humans harvest fruit, veggies, and fish. A group of UTC engineering students in a senior interdisciplinary design class successfully… <\/p>\n

Continue Reading <\/span><\/a><\/span><\/p>\n","protected":false},"author":294,"featured_media":12955,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","_ef_editorial_meta_date_first-draft-date":"","_ef_editorial_meta_paragraph_assignment":"","_ef_editorial_meta_checkbox_needs-photo":"","_ef_editorial_meta_number_word-count":"","_ef_editorial_meta_checkbox_slider":"","_ef_editorial_meta_checkbox_featurette":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[59,661],"tags":[],"class_list":{"0":"post-12951","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-college-of-engineering-and-computer-science","8":"category-students","9":"entry"},"yoast_head":"\nEngineering students grow edible plants, fish, in aquaponics system | UTC News Archive: Jul 2007 - 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