Zein/EDTA/chlorophyll/nano-clayBiocomposite Sorbent; Studying Physicochemical Properties and Ability to Remove Industrial Wastewater Contaminants

2021 ◽  
Author(s):  
Farrokh Asadzadeh ◽  
sajad pirsa
Keyword(s):  
Tensile Strength ◽  
Wastewater Treatment ◽  
Physicochemical Properties ◽  
Industrial Wastewater ◽  
Electrostatic Interactions ◽  
Water Solubility ◽  
Nitrate Removal ◽  
Water Hardness ◽  
Good Effect ◽  
Total Hardness

Abstract In this study, a composite biosorbent of zein/ethylene diamine tetraacetic acid /chlorophyll/nano-clay (Ze/EDTA/Chl/Clay) was prepared. Thickness, mechanical properties (tensile strength and strength to breaking point), ability to reduce water hardness, water solubility, water absorption, antioxidant activity and moisture content of prepared biosorbent were studied. SEM, FTIR, XRD and TGA techniques were used to investigate the physicochemical properties and structure of the prepared biosorbent. Optimal biosorbent was selected using statistical methods and used to remove chemical contaminants from industrial wastewater in Urmia (Iran). For this purpose, total heavy metals (THM), total hardness, nitrate, nitrite, COD and BOD, TDS and salinity of industrial wastewater before and after biosorbent treatment were investigated. The results confirmed the homogeneous and cohesive structure of different zein adsorbents. FTIR results showed physical and electrostatic interactions between composite components. Nanoclay increased the thermal stability of the biosorbent. Chlorophyll and EDTA increased the biosorbent ability to absorb water and reduce the total hardness of the water. Clay nanoparticles increased the tensile strength of the biosorbent and chlorophyll and EDTA increased the biosorbent ductility. Under optimal wastewater treatment conditions, Ze/EDTA/Chl/Clay biosorbent was recognized as the best adsorbent. The use of ultrasound in wastewater treatment had a good effect. Under optimal conditions, 57.5% of THM and 67% of nitrate were removed from the wastewater. By comparing the ability of chlorophyll-containing biosorbents (Ze/Chl and Ze/EDTA/Chl/Clay) to remove nitrite and nitrate, it was found that these biosorbents have a very high selectivity in nitrate removal compared to nitrite.

RESEARCH AND EVALUATE TREATMENT EFFICIENCY ON TAPIOCA PROCESSING INDUSTRIAL WASTEWATER BY AEROBIC BIOFILTER TECHNOLOGY WITH VARIOUS MATERIALS

2010 ◽  
Vol 13 (3) ◽  
pp. 54-66
Author(s):  
Phuong Thi Thanh Nguyen ◽  
Phuoc Van Nguyen ◽  
Anh Cam Thieu
Keyword(s):  
Wastewater Treatment ◽  
Industrial Wastewater ◽  
Utilization Rate ◽  
Organic Loading ◽  
Treatment Efficiency ◽  
Research Results ◽  
Loading Rates

This study was performed to evaluate the efficiency of tapioca processing wastewater treatment using aerobic biofilter with variety of biofilter media: coir, coal, PVC plastic and Bio - Ball BB15 plastic. Research results in the lab demonstrated all four aerobic biofilter models processed can treated completely N and COD which COD reached 90-98% and N reached 61-92%, respectively, at the organic loading rates in range of 0.5, 1, 1.5 and 2 kgCOD/m3.day. The results identified coir filter was the best in four researched materials with removal COD and specific substract utilization rate can reach 98%, and 0.6 kg COD/kgVSS.day. Research results open the new prospects for the application of the cheap materials, available for wastewater treatment.

APPLICATION OF THE FLOCCULATION PROCESS IN THE INDUSTRIAL WASTEWATER TREATMENT

2016 ◽  
Vol 15 (3) ◽  
pp. 521-526
Author(s):  
Narcis Barsan ◽  
Mariana Turcu ◽  
Emilian Mo.negu.u ◽  
Mihaela Dascalu ◽  
Dana Chitimus ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Industrial Wastewater ◽  
Industrial Wastewater Treatment ◽  
Flocculation Process

Physicochemical Characterization and Antinociceptive Effect of β-cyclodextrin/Lippia pedunculosa Essential Oil in Mice

2018 ◽  
Vol 18 (9) ◽  
pp. 797-807 ◽  
Author(s):  
Paula dos Passos Menezes ◽  
Francielly de Oliveira Araujo ◽  
Tatianny Araujo Andrade ◽  
Igor Araujo Santos Trindade ◽  
Heitor Gomes de Araujo-Filho ◽  
...  
Keyword(s):  
Essential Oil ◽  
Physicochemical Properties ◽  
Water Solubility ◽  
Therapeutic Potential ◽  
Biological Activities ◽  
Antinociceptive Effect ◽  
Physicochemical Characterization ◽  
Good Tool ◽  
Main Challenge ◽  
Higher Temperature

Background: Some research studies have shown that Lippia pedunculosa essential oil (EOLP) has interesting biological activities. However, its low water solubility is the main challenge to achieve its therapeutic potential. In this context, Cyclodextrins (CDs) have been widely used in order to overcome this problem due to your capability to improve the physicochemical properties of drugs. Objective: In this perspective, the main goal of this study was to investigate how the improvement of the physicochemical properties of inclusion complexes (EOLP and β-CD) enhance the antinociceptive effect in mice. Methods: To achieve that, we prepared samples by Physical Mixture (PM), Paste Complexation (PC) and Slurry Complexation (SC) methods, followed by their physicochemical characterization. In addition, it was evaluated if the use of β-CD enhances the antinociceptive effect of EOLP in mice. Results: The analysis showed that rotundifolone (72.02%) was the major compound of EOLP and we found out based on DSC results that β-CD protected it from oxidation. In addition, TG techniques demonstrated that the best inclusion methods were PC and SC, due to their greater weight loss (10.8 and 11.6%, respectively) in the second stage (171-312°C), indicating that more complexed oil was released at the higher temperature than oil free. Other characteristics, such as changes in the typical crystalline form, and reduced particle size were observed by SEM and laser diffraction, respectively. The SC was the most effective complexation method, once the presence of rotundifolone was detected by FTIR. Based on that, SC method was used in all mice tests. In this regard, the number of paw licks was reduced for both compounds (all doses), but EOLP was more effective in reducing the nociceptive behavior. Conclusion: Therefore, CDs seem not to be a good tool to enhance the pharmacological properties of EOs rich in peroxide compounds such as rotundifolone.

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