Evaluation of techniques for the remediation of antibiotic-contaminated water using activated carbon

2020 ◽  
Vol 5 (4) ◽  
pp. 743-756 ◽  
Author(s):  
Kiran P. Shejale ◽  
Dharmveer Yadav ◽  
Harshala Patil ◽  
Sumit Saxena ◽  
Shobha Shukla
Keyword(s):  
Activated Carbon ◽  
Environmental Pollutants ◽  
Terrestrial Ecosystems ◽  
Contaminated Water ◽  
Antibiotic Resistant ◽  
Important Group ◽  
Low Concentrations ◽  
Global Concern

Antibiotics have emerged as an important group of environmental pollutants and attracted global concern due to their persistent influence on aquatic and terrestrial ecosystems even at low concentrations and evolution of antibiotic-resistant superbug.

Utilization of fruit processing industry waste as green activated carbon for the treatment of heavy metals and chlorophenols contaminated water

2017 ◽  
Vol 162 ◽  
pp. 958-972 ◽  
Author(s):  
Sabolč Pap ◽  
Tatjana Šolević Knudsen ◽  
Jelena Radonić ◽  
Snežana Maletić ◽  
Saša M. Igić ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Activated Carbon ◽  
Contaminated Water ◽  
Processing Industry ◽  
Industry Waste ◽  
Fruit Processing

scholarly journals Cardiovascular Effects of PCB 126 (3,3’,4,4’,5-Pentachlorobiphenyl) in Zebrafish Embryos and Impact of Co-Exposure to Redox Modulating Chemicals

2019 ◽  
Vol 20 (5) ◽  
pp. 1065 ◽  
Author(s):  
Elisabet Teixidó ◽  
Marta Barenys ◽  
Ester Piqué ◽  
Joan Llobet ◽  
Jesús Gómez-Catalán
Keyword(s):  
Oxidative Stress ◽  
Developmental Toxicity ◽  
Environmental Pollutants ◽  
Cardiovascular Effects ◽  
Zebrafish Embryos ◽  
Oxidative Potential ◽  
Antioxidant Genes ◽  
Aryl Hydrocarbon ◽  
Low Concentrations ◽  
Pericardial Edema

The developing cardiovascular system of zebrafish is a sensitive target for many environmental pollutants, including dioxin-like compounds and pesticides. Some polychlorinated biphenyls (PCBs) can compromise the cardiovascular endothelial function by activating oxidative stress-sensitive signaling pathways. Therefore, we exposed zebrafish embryos to PCB126 or to several redox-modulating chemicals to study their ability to modulate the dysmorphogenesis produced by PCB126. PCB126 produced a concentration-dependent induction of pericardial edema and circulatory failure, and a concentration-dependent reduction of cardiac output and body length at 80 hours post fertilization (hpf). Among several modulators tested, the effects of PCB126 could be both positively and negatively modulated by different compounds; co-treatment with α-tocopherol (vitamin E liposoluble) prevented the adverse effects of PCB126 in pericardial edema, whereas co-treatment with sodium nitroprusside (a vasodilator compound) significantly worsened PCB126 effects. Gene expression analysis showed an up-regulation of cyp1a, hsp70, and gstp1, indicative of PCB126 interaction with the aryl hydrocarbon receptor (AhR), while the transcription of antioxidant genes (sod1, sod2; cat and gpx1a) was not affected. Further studies are necessary to understand the role of oxidative stress in the developmental toxicity of low concentrations of PCB126 (25 nM). Our results give insights into the use of zebrafish embryos for exploring mechanisms underlying the oxidative potential of environmental pollutants.

Activated carbon impregnation with ag and cu composed nanoparticles for escherichia coli contaminated water treatment

2019 ◽  
Vol 97 (9) ◽  
pp. 2408-2418 ◽  
Author(s):  
Flávia Sayuri Arakawa ◽  
Quelen Letícia Shimabuku‐Biadola ◽  
Simone de Lima Bazana ◽  
Marcela Fernandes Silva ◽  
Benício Alves de Abreu Filho ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Activated Carbon ◽  
Water Treatment ◽  
Contaminated Water

scholarly journals Ecofriendly Approach for Treatment of Heavy-Metal-Contaminated Water Using Activated Carbon of Kernel Shell of Oil Palm

Materials ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2627
Author(s):  
Rabia Baby ◽  
Mohd Zobir Hussein
Keyword(s):  
Heavy Metal ◽  
Activated Carbon ◽  
Oil Palm ◽  
Metal Ion ◽  
Agricultural Waste ◽  
Palm Kernel ◽  
Significant Risk ◽  
Contaminated Water ◽  
Ion Adsorption ◽  
Metal Ion Adsorption

Heavy metal ion contamination in water poses a significant risk to human health as well as to the environment. Millions of tons of agricultural wastes are produced from oil palm plantations which are challenging to manage. In this study, we converted palm kernel shells (PKS) from a palm oil plantation into activated carbon (AC) having a surface area of 1099 m2/g using phosphoric acid as an activator. The prepared material was characterized using BET, XRD, Raman, FESEM and FTIR analyses. The AC was applied for the treatment of heavy-metal-contaminated water, and different parameters; the pH, adsorbent dosage, contact time and metal ion concentrations were varied to determine the optimal conditions for the metal ion adsorption. Different kinetic models; the zeroth, first-order and second-order, and Freundlich and Langmuir isotherm models were used to determine the mechanism of metal ion adsorption by the AC. Under the optimized conditions, Cr6+ and Pb2+ were removed completely, while Zn2+ and Cd2+ were more than 80% removed. This is a greener approach in which an agricultural waste, PKS is converted into a useful product, activated carbon and subsequently applied for the treatment of heavy metal-contaminated water.

scholarly journals Toxicity Studies of Ametryne to Land and Aquatic Organisms

2017 ◽  
Vol 6 (1) ◽  
pp. 8
Author(s):  
Ana Paula Justiniano Régo ◽  
Ederio Dino Bidoia ◽  
Cassiana Maria Reganhan-Coneglian
Keyword(s):  
Seed Germination ◽  
Root Growth ◽  
Test Organism ◽  
Aquatic Organisms ◽  
Terrestrial Ecosystems ◽  
Toxic Effects ◽  
Eruca Sativa ◽  
Daphnia Similis ◽  
Low Concentrations ◽  
Bodies Of Water

The ametryne herbicide is largely used on sugar cane plantation in Brazil. It is persistent in the environment and can be found in bodies of water, impacting the aquatic and terrestrial ecosystems. Generally, in crops are applied mixtures of herbicides in order to obtain a higher success in combating weeds. This study evaluated the toxicity only of ametryne herbicide, without mixture with other herbicides, in order to quantify only the degree of dangerousness. This work evaluated the toxicity of ametryne to one aquatic test organism (Daphnia similis) and two land test organism (Eruca sativa and Lactuca sativa). Immobility of D. similis was evaluated in the presence of ametryne. Influences of ametryne on seed germination and root growth of E. sativa and L. sativa were evaluated. Even at low concentrations (5.00 mg/L), ametryne caused toxic effects on the mobility of D. similis, and 0.25 g/L caused toxic effects on the seeds. Root growth and the percentage of inhibition showed greater sensitivity to ametryne compared with seed germination. Thus, ametryne resulted in toxic effects to the analyzed organisms, which may bring damage to both aquatic and terrestrial ecosystems.

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