Risk assessment and the adsorptive removal of some pesticides from synthetic wastewater: a review

Abstract

Background The need for environmental protection and remediation processes has been an increasing global concern. Pesticides are used as biological agents, disinfectants, antimicrobials, and also in a mixture of some chemical substances. Their modes of application are through selective dispensing and attenuation processes which act upon any pest that compete with the production, processing, and storage of foods and also in agricultural commodes. The pests might comprise weeds, insects, birds, fish, and microbes. Main body Pesticides are commonly found in water surface, landfill leachate, ground water, and wastewater as pollutant. An overview of recently studied adsorption processes for the pesticide elimination from polluted water has been reported in this study utilizing activated carbon, clay materials, biomass materials, metal organic frame work, graphene, and carbon-based materials as well as agricultural wastes as adsorbents. The risk assessment and cost analysis of adsorbents were also provided. Conclusion Evidences from literature recommend modified adsorbent and composite materials to have a prospective use in pesticide removal from wastewater. The adsorption data obtained fitted into different isotherm and kinetic models and also the thermodynamic aspect have been discussed. Graphical abstract

The Influence of Anthropogenic Activities on the Concentration of Pesticides, Physicochemical and Microbiological Properties in the Chumbao River, Andahuaylas, Perú

“…Then, it is transported to groundwater by leaching and to surface water by runoff. A phenomenon that is also influenced by the slope of the land; i.e., the volume of water falling to the ground and the topography of the cultivation area are two of the factors that play an important role in the risk of contamination of water resources by pesticides [8], [9].…”

Biopolymer‐Nanocomposite Hybrid Materials as Potential Strategy to Remove Pesticides in Water: Occurrence and Perspectives

“…[4,10] Globally, pesticide use has increased 1.5-fold in the last three decades. [1,6,8,11] Approximately 2 million tons of pesticides are used annually in global agricultural activities. [7] Countries with the highest consumption of these agrochemicals include Japan, Brazil, United States, Argentina, Canada, Italy, Thailand, France, India, and China.…”

“…[21] In some cases, pesticides may also be considered as persistent and mobile organic compounds, because they can easily evade the treatment processes used for contaminated water, consequently threatening drinking water quality. [6,21] Persistent organic pollutants (POPs) have the characteristic of long half-life, enabling their accumulation in various living organisms and in the wider environment. Examples of POPs include aldrin, chlordane, lindane, and DDT, among many others.…”

“…However, although the use of pesticides brings important benefits, including reduced crop damage and, consequently, increased food quality and quantity, these substances have detrimental effects on the environment. [5][6][7] One of the negative effects of the use of chemical pesticides in agricultural systems is the impact on water resources, [1,7] depending on factors including the nature of the compound used, the mode of application, and climatic variations. [1,7] The low degradability of pesticides enables them to accumulate in the soil or to be transported to surface water and groundwater, causing further environmental damage.…”

Equilibrium Isotherms and Kinetics Modelling for an Efficient Removal of 4-Chloro-2-Methoxyphenol From Aqueous Solution Using Optimal Activated Carbon

“…Additionally, they are toxic and have carcinogenic features (8,9) One of the most valuable and effective control technologies for wastewater treatment is adsorption (10)(11)(12)(13)(14)(15)(16)(17). Activated carbon (AC) is the best practical adsorbent due to its easy operation as well as good adsorption capacity (18)(19)(20)(21). ACs are considered adsorbents as a result of their adaptable exterior properties which are broadly applied for a wide range of industries (12,19,(22)(23)(24).…”