Optimization of profenofos organophosphorus pesticide degradation by zero-valent bimetallic nanoparticles using response surface methodology

Won

2020

IJERPH

This study investigates how the non-thermal plasma (NTP) process leads to advanced oxidation of sewage using response surface methodology. For environmentally viable and efficient operation of the NTP process, temperature and contact time were selected as two important independent variables. Their impacts on the performance were tested following an experimental design to figure out optimal operating conditions. Based on obtained treatment efficiency, statistically optimized conditions were derived by using an approach adapting the central composite design. Results show that coupling 40 °C of temperature and 4 h of contact time demonstrate optimal performance for total chemical oxygen demand (TCOD, 59%) and total suspended solids (85%), respectively. This implies that NTP may present efficient particulate destruction leading to organic solids dissolution. Statistical analysis reveals that the contact time shows more significant dependency than the temperature on the advanced oxidation of TCOD, possibly due to dissolved organic material. For total nitrogen removal, on the contrary, the optimal efficiency was strongly related to the higher temperature (~68 °C). This work provides an inroad to considering how NTP can optimally contribute to better oxidation of multiple pollutants.

Section: Resultsmentioning

confidence: 99%

Optimized Pretreatment of Non-Thermal Plasma for Advanced Sewage Oxidation

Won

2020

IJERPH

Comp Rev Food Sci Food Safe

“…Recently, MOFs, an emerging class of porous polymers, have been examined extensively because of their excellent properties (Britt, Tranchemontagne, & Yaghi, 2008; Glover, Peterson, Schindler, Britt, & Yaghi, 2011; Mansouriieh et al., 2019). Generally, the adsorption capacity increases when the surface area increases.…”

Section: Metal–organic Frameworkmentioning

confidence: 99%

“…Pesticides are synthetic compounds that are broadly used in farming, herding, forestry, parks, industrial sites, turfs, sports fields, and educational facilities. The generated pollutants generally span across a class of contaminants that are created because of the utilization of herbicides, fungicides, insecticides, molluscicides, rodenticides, bactericides, miticides, nematocides, and acaricide wood preservatives (Bogdanov, 2006; Fard & Barkdoll, 2019; Foo & Hameed, 2010; Kumar et al., 2018; Mansouriieh, Sohrabi, & Khosravi, 2019; Marican & Duran‐Lara, 2018). Common pesticides are classified according to chemical structure, which can be divided into organophosphorus, organochlorines, carbamates, chlorophenols, and synthetic pyrethroids (George & Shukla, 2011; Hamza, Iorhemen, & Tay, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…However, these farmers do not know of the potential adverse impact on ecosystems and humans (Niu & Cai, 2011; Zhang, Yang, Wang, Wang, & Wang, 2016). Long‐term exposure to food that has been polluted with pesticides can also have detrimental effects on humans (Dhaka et al., 2019; Mansouriieh et al., 2019). Several pesticides can inhibit acetylcholinesterase activity in the nervous system that results in dyspnea and neuromuscular transmission impairment owing to its highly acute toxicological effects (Duran‐Lara et al., 2015; Mansouriieh et al., 2019).…”

Section: Introductionmentioning

confidence: 99%

“…Long‐term exposure to food that has been polluted with pesticides can also have detrimental effects on humans (Dhaka et al., 2019; Mansouriieh et al., 2019). Several pesticides can inhibit acetylcholinesterase activity in the nervous system that results in dyspnea and neuromuscular transmission impairment owing to its highly acute toxicological effects (Duran‐Lara et al., 2015; Mansouriieh et al., 2019). Additionally, various other symptoms have also been caused, which include lacrimation and perspiration, headaches, abdominal pain, vomiting and nausea, coma, and seizures.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Metal–organic framework for the extraction and detection of pesticides from food commodities

Wang

et al. 2020

Pesticide residues in food matrices, threatening the survival and development of humanity, is one of the critical challenges worldwide. Metal–organic frameworks (MOFs) possess excellent properties, which include excellent adsorption capacity, tailorable shape and size, hierarchical structure, numerous surface‐active sites, high specific surface areas, high chemical stabilities, and ease of modification and functionalization. These promising properties render MOFs as advantageous porous materials for the extraction and detection of pesticides in food samples. This review is based on a brief introduction of MOFs and highlights recent advances in pesticide extraction and detection through MOFs. Furthermore, the challenges and prospects in this field are also described.

The Bioremediation Capacity of Sphingomonas melonis for Methomyl‐Contaminated Soil Media: RSM Optimization and Biochemical Assessment by Dreissena polymorpha

et al. 2022

The bioremediation capacity of S. melonis for methomyl investigated with RSM. Oxidative stress and neurotoxic response determined in D. polymorpha. COD and TOC levels were measured. GSH, MDA levels and CAT, SOD, AChE activities in D. polymorpha exposed to before (group A) and after (group B) bioremediated media during 24 and 96 h were tested by using ELISA kit. AchE activity was decreased 24th h but increased during 96th h in group B compared with group A (p<0.05). MDA levels and CAT activities were decreased during 24 h and 96 h in group B compared with group A (p<0.05). GSH levels were increased during 24 h and 96 h in group B compared with group A (p<0.05). SOD activity did not show a significant change in group B (p<0.05). Methomyl could be effectively remediated by S. melonis and CAT, AChE activities and GSH, TBARS levels of D. polymorpha are useful biomarkers for evaluating the bioremediation capacity.