Featured Research

from universities, journals, and other organizations

Floating Iris Plants May Help Clean Fishery Wastewater

Date:
February 10, 2009
Source:
USDA/Agricultural Research Service
Summary:
The feasibility of using floating vegetation to remove nutrients from fishery wastewater is being tested by scientists.

Irises can filter nutrients out of a fishery's wastewater so the water can be returned to ponds for reuse. Of the plant species tested on floating mats in fishery wastewater, iris plants, shown here, grew best.
Credit: Photo by Robert Hubbard

The feasibility of using floating vegetation to remove nutrients from fishery wastewater is being tested by Agricultural Research Service (ARS) scientists.

Related Articles


The researchers' long-term goal is to develop a system to treat the wastewater, return it to ponds for reuse, and use the nutrients to produce biomass or plant material. The floating mats act as filters to remove the nutrients from the water.

The study participants are soil scientist Robert K. Hubbard at the ARS Southeast Watershed Research Laboratory, in Tifton, Ga.; plant geneticist William Anderson and plant pathologist Jeffrey P. Wilson at the ARS Crop Genetics and Breeding Research Unit, both in Tifton; and University of Georgia animal science associate professors Gary Burtle and Larry Newton, also in Tifton.

Wastewater from the fish-production ponds is pumped into 340-gallon aquaculture tanks. Each tank has a 10-foot-square floating mat on which the vegetation grows.

The first objective is to find plant species that grow well in fishery wastewater. Twelve different plant species are currently being tested: St. Augustine grass, Tifton 85 bermudagrass, common bermudagrass, canna lilies, iris, bamboo, bulrush, cattail, bordergrass, napiergrass, reeds, and maidencane. According to Hubbard, the iris is the best performer so far.

The second part of the study--set to begin in the spring of 2009--will determine the effects of the vegetation on water quality and the amount of nutrients removed when plant biomass is harvested.

The plant material will be harvested on an as-needed basis and the plant tissue analyzed for nitrogen, phosphorus, and potassium. Harvested plant material has several potential uses: It can be transplanted, used as feedstock for energy production, or composted and used as a soil amendment.


Story Source:

The above story is based on materials provided by USDA/Agricultural Research Service. Note: Materials may be edited for content and length.


Cite This Page:

USDA/Agricultural Research Service. "Floating Iris Plants May Help Clean Fishery Wastewater." ScienceDaily. ScienceDaily, 10 February 2009. <www.sciencedaily.com/releases/2009/01/090131124137.htm>.
USDA/Agricultural Research Service. (2009, February 10). Floating Iris Plants May Help Clean Fishery Wastewater. ScienceDaily. Retrieved December 17, 2014 from www.sciencedaily.com/releases/2009/01/090131124137.htm
USDA/Agricultural Research Service. "Floating Iris Plants May Help Clean Fishery Wastewater." ScienceDaily. www.sciencedaily.com/releases/2009/01/090131124137.htm (accessed December 17, 2014).

Share This


More From ScienceDaily



More Plants & Animals News

Wednesday, December 17, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

When You Lose Weight, This Is Where The Fat Goes

When You Lose Weight, This Is Where The Fat Goes

Newsy (Dec. 17, 2014) Can fat disappear into thin air? New research finds that during weight loss, over 80 percent of a person's fat molecules escape through the lungs. Video provided by Newsy
Powered by NewsLook.com
Rover Finds More Clues About Possible Life On Mars

Rover Finds More Clues About Possible Life On Mars

Newsy (Dec. 17, 2014) NASA's Curiosity rover detected methane on Mars and organic compounds on the surface, but it doesn't quite prove there was life ... yet. Video provided by Newsy
Powered by NewsLook.com
Ivory Trade Boom Swamps Law Efforts

Ivory Trade Boom Swamps Law Efforts

Reuters - Business Video Online (Dec. 17, 2014) Demand for ivory has claimed the lives of tens of thousands of African elephants and now a conservation report says the illegal trade is overwhelming efforts to enforce the law. Amy Pollock reports. Video provided by Reuters
Powered by NewsLook.com
Uphill Battle to Tackle Indonesian Shark Fishing

Uphill Battle to Tackle Indonesian Shark Fishing

AFP (Dec. 17, 2014) Sharks are hauled ashore every day at a busy market on the central Indonesian island of Lombok, the hub of a booming trade that provides a livelihood for local fishermen but is increasingly alarming environmentalists. Duration: 00:42 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins