TY - JOUR
T1 - FATE, ECO-TOXICOLOGICAL CHARACTERISTICS, AND TREATMENT PROCESSES APPLIED TO WATER POLLUTED WITH GLYPHOSATE: A CRITICAL REVIEW
T2 - A critical review
AU - Villamar-Ayala, Cristina Alejandra
AU - Carrera-Cevallos, Jeanette Verónica
AU - Vasquez-Medrano, Ruben
AU - Espinoza-Montero, Patricio Javier
N1 - Publisher Copyright:
© 2019, © 2019 Taylor & Francis Group, LLC.
PY - 2019/3/25
Y1 - 2019/3/25
N2 - Glyphosate is the most widely used active ingredient of Glyphosate Based Herbicides (GBHs), and which has environmental mobility towards water by its physicochemical characteristics. These properties determine its low availability in living organisms (log K ow < 0), which is increased by the presence of co-adjuvant activators in GBHs and its biodegradation (metabolites). Eco-toxicological studies have determined that glyphosate affects to several aquatic trophic-levels (freshwater/marine environments), being more toxics GBHs. Therefore, its potential environmental risk has promoted the development of conventional (biological and physicochemical) and non-conventional (Advanced-Oxidation-Processes or AOPs, combined processes) treatment strategies. Biological processes will generate incomplete degradation (metabolites generation), and variable removal efficiencies (25–99%). Physicochemical processes will be efficient (approx. 90%) but transferring the glyphosate from water to the adsorbent material (dangerous waste generation). Currently, AOPs will arise as a rapid (minutes) and effective alternative for glyphosate removal (>90%), depending on operational conditions, and without generation of intermediate metabolites. Moreover, new strategies (electrochemical) will avoid the hazardous waste production. Other combined processes (biological + physicochemical) will also reach glyphosate efficiencies removal above 90% but needing large spaces. However, their physical characteristics would make them feasible to be applied in agricultural areas.
AB - Glyphosate is the most widely used active ingredient of Glyphosate Based Herbicides (GBHs), and which has environmental mobility towards water by its physicochemical characteristics. These properties determine its low availability in living organisms (log K ow < 0), which is increased by the presence of co-adjuvant activators in GBHs and its biodegradation (metabolites). Eco-toxicological studies have determined that glyphosate affects to several aquatic trophic-levels (freshwater/marine environments), being more toxics GBHs. Therefore, its potential environmental risk has promoted the development of conventional (biological and physicochemical) and non-conventional (Advanced-Oxidation-Processes or AOPs, combined processes) treatment strategies. Biological processes will generate incomplete degradation (metabolites generation), and variable removal efficiencies (25–99%). Physicochemical processes will be efficient (approx. 90%) but transferring the glyphosate from water to the adsorbent material (dangerous waste generation). Currently, AOPs will arise as a rapid (minutes) and effective alternative for glyphosate removal (>90%), depending on operational conditions, and without generation of intermediate metabolites. Moreover, new strategies (electrochemical) will avoid the hazardous waste production. Other combined processes (biological + physicochemical) will also reach glyphosate efficiencies removal above 90% but needing large spaces. However, their physical characteristics would make them feasible to be applied in agricultural areas.
KW - Eco-toxicity
KW - environmental mobility
KW - glyphosate
KW - metabolites/co-adjuvant
KW - treatment process
KW - water
UR - http://www.scopus.com/inward/record.url?scp=85063393270&partnerID=8YFLogxK
U2 - 10.1080/10643389.2019.1579627
DO - 10.1080/10643389.2019.1579627
M3 - Article
AN - SCOPUS:85063393270
SN - 1064-3389
JO - Critical Reviews in Environmental Science and Technology
JF - Critical Reviews in Environmental Science and Technology
ER -
