Featured Research

from universities, journals, and other organizations

Simulating Pharmaceutical And Personal Care Product Transport

Date:
May 19, 2009
Source:
American Society of Agronomy
Summary:
Pharmaceuticals and personal care products (PPCPs) carried in biosolids (i.e., treated sewage sludge) may reach surface waters or groundwater when these materials are applied as fertilizer to agricultural land. During the high flow conditions created by land application of liquid municipal biosolids (LMB) the residence time of solutes in soil macropores may be too short for sorption equilibration which increases the risk for leaching.

Pharmaceuticals and personal care products (PPCPs) carried in biosolids (i.e., treated sewage sludge) may reach surface waters or groundwater when these materials are applied as fertilizer to agricultural land. During the high flow conditions created by land application of liquid municipal biosolids (LMB) the residence time of solutes in soil macropores may be too short for sorption equilibration which increases the risk for leaching.

Physically based solute transport simulation models are widely used in environmental risk assessment for pesticides. These models may also be applicable for PPCPs when their physical and chemical properties and soil dissipation characteristics are available. However, these models do not account for non-equilibrium sorption in soil macropores. The model MACRO is one of the models used in environmental risk assessments for pesticides and may have potential as an environmental risk assessment tool for PPCPs.

A group of scientists from the Swedish University of Agricultural Sciences, the Swiss Federal Institute for Aquatic Science and Technology, Agriculture and Agri-food Canada, and Trent University, Canada, evaluated the MACRO model and an updated version of MACRO which included non-equilibrium sorption in macropores using data from experiments on the transport of three PPCPs (atenolol, carbamazepine, and triclosan), the nicotine metabolite cotinine, and the strongly sorbing dye rhodamine WT applied in LMB. The study was financed by grants from the European Union (ERAPharm, project no. 511135) as well as Health Canada, the AAFC GAPs program, and the Ontario Ministry of Agriculture and Rural Affairs, Nutrient Management Joint Research Program. Results from the study were published in the May-June issue of the Journal of Environmental Quality.

Results showed that the MACRO model could not reproduce the measured rhodamine WT concentrations in drain discharge. The updated version resulted in better fits to measured data for both PPCP and rhodamine WT concentrations. However, it was not possible to simulate all compounds using the same set of hydraulic parameters, which indicates that the model does not fully account for all relevant processes.

Mats Larsbo, one of the authors of the article, stated that “Our results show that non-equilibrium sorption in macropores has a large impact on simulated solute transport for reactive compounds contained in LMB. This process should be considered in solute transport models that are used for environmental risk assessments for such compounds”.

The identification of key model processes, such as non-equilibrium sorption in macropores, is an important step in the development of better tools for environmental risk assessment for PPCPs. However, further field studies and model evaluations are needed to establish under which conditions this process plays an important role.


Story Source:

The above story is based on materials provided by American Society of Agronomy. Note: Materials may be edited for content and length.


Journal Reference:

  1. Larsbo, Mats, Lapen, David R., Topp, Edward, Metcalfe, Chris, Abbaspour, Karim C., Fenner, Kathrin. Simulation of Pharmaceutical and Personal Care Product Transport to Tile Drains after Biosolids Application. Journal of Environmental Quality, 2009; 38 (3): 1274 DOI: 10.2134/jeq2008.0301

Cite This Page:

American Society of Agronomy. "Simulating Pharmaceutical And Personal Care Product Transport." ScienceDaily. ScienceDaily, 19 May 2009. <www.sciencedaily.com/releases/2009/05/090519134829.htm>.
American Society of Agronomy. (2009, May 19). Simulating Pharmaceutical And Personal Care Product Transport. ScienceDaily. Retrieved September 17, 2014 from www.sciencedaily.com/releases/2009/05/090519134829.htm
American Society of Agronomy. "Simulating Pharmaceutical And Personal Care Product Transport." ScienceDaily. www.sciencedaily.com/releases/2009/05/090519134829.htm (accessed September 17, 2014).

Share This



More Health & Medicine News

Wednesday, September 17, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

President To Send 3,000 Military Personnel To Fight Ebola

President To Send 3,000 Military Personnel To Fight Ebola

Newsy (Sep. 16, 2014) President Obama is expected to send 3,000 troops to West Africa as part of the effort to contain Ebola's spread. Video provided by Newsy
Powered by NewsLook.com
Obama Orders Military Response to Ebola

Obama Orders Military Response to Ebola

AP (Sep. 16, 2014) Calling the Ebola outbreak in West Africa a potential threat to global security, President Barack Obama is ordering 3,000 U.S. military personnel to the stricken region amid worries that the outbreak is spiraling out of control. (Sept. 16) Video provided by AP
Powered by NewsLook.com
UN: 20,000 Could Be Infected With Ebola by Year End

UN: 20,000 Could Be Infected With Ebola by Year End

AFP (Sep. 16, 2014) Nearly $1.0 billion dollars is needed to fight the Ebola outbreak raging in west Africa, the United Nations say, warning that 20,000 could be infected by year end. Duration: 00:40 Video provided by AFP
Powered by NewsLook.com
Obama: Ebola Outbreak Threat to Global Security

Obama: Ebola Outbreak Threat to Global Security

AP (Sep. 16, 2014) President Obama is ordering U.S. military personnel to West Africa to deal with the Ebola outbreak, which is he calls a potential threat to global security. (Sept. 16) Video provided by AP
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:
from the past week

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