scholarly journals EQUILIBRIUM STUDIES IN ADSORPTION OF HEAVY METALS USING MODIFIED GRANULAR ACTIVATED CARBON

2020 ◽  
Vol 13 (04) ◽  
pp. 2302-2307
Author(s):  
Y. K. Meshram ◽  
R. U. Khope ◽  
P. P. Chahande
Keyword(s):  
Heavy Metals ◽  
Activated Carbon ◽  
Granular Activated Carbon ◽  
Equilibrium Studies

scholarly journals The Effect of Granular Activated Carbon and Biochar on the Availability of Cu and Zn to Hordeum sativum Distichum in Contaminated Soil

Plants ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 841
Author(s):  
Marina Burachevskaya ◽  
Saglara Mandzhieva ◽  
Tatiana Bauer ◽  
Tatiana Minkina ◽  
Vishnu Rajput ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Activated Carbon ◽  
Spring Barley ◽  
Granular Activated Carbon ◽  
Total Content ◽  
Metal Compounds ◽  
Significant Difference ◽  
High Sorption ◽  
Living Organisms ◽  
Cu And Zn

The presence of heavy metals in the soil could impose serious problems on soil-plant systems due to the accumulation of heavy metals in plants. Even vital elements such as Cu and Zn have a toxic effect in the case of excessive intake by living organisms. The present work aimed to investigate the content of loosely bound (exchangeable, complexed, and specifically sorbed) compounds of Cu and Zn and their availability to spring barley (Hordeum sativum distichum) in contaminated Haplic Chernozem soil under the conditions of a model experiment (five approximate permissible concentrations (APC) and 10 APC of metal). Changes in the bioavailability of the metals upon application of carbon sorbents were observed. An increase in loosely bound metal compounds has been shown under conditions of soil contamination with metals (up to 57% of the total content). The increase in the availability of Cu in the soil was mainly due to the formation of complexed metal forms with organic matter (up to 17%). The availability of Zn was found to be associated with an increase in exchangeable (up to 21%) and specifically sorbed compounds (up to 27%). Granular activated carbon (GAC) and biochar have high sorption properties. A decrease in the content of loosely bound compounds of metals was established, especially in the most mobile forms such as exchangeable and complexed forms. The introduction of sorbents into the soil opened up a new venue for binding heavy metals in situ, eventually leading to a decrease in their bioavailability. The inactivation of Cu and Zn in the soil upon the application of sorbents led to a decrease in metal absorption by spring barley. The highest efficiency of biochar application was established at a dose of 2.5% and 5% in soil contaminations of 5 APC and 10 APC of Cu or Zn. The efficiency of the use of sorbents was more influenced by the dose of application than by the type of sorbent. There was no significant difference between biochar and GAC. Stabilization and inactivation of metals may improve soil fertility and plant growth.

Application of Carbonaceous Materials to Phenol Removal from Aqueous Solution by Adsorption

2012 ◽  
Vol 164 ◽  
pp. 297-301 ◽  
Author(s):  
Wei Fang Dong ◽  
Li Hua Zang ◽  
Qing Chao Gong ◽  
Cun Cun Chen ◽  
Cai Hong Zheng ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Adsorption Capacity ◽  
Petroleum Coke ◽  
Granular Activated Carbon ◽  
Powdered Activated Carbon ◽  
Maximum Adsorption Capacity ◽  
Phenol Removal ◽  
Carbonaceous Materials ◽  
Solution Ph ◽  
Equilibrium Studies

Low cost carbonaceous materials were evaluated for their ability to remove phenol from wastewater. The effects of adsorbents dosage, contact time and maximum adsorption capacity were investigated for granular activated carbon, powdered activated carbon, petroleum coke and multi-walled carbon nanotube (MWNT). Equilibrium studies were conducted in 50mg/L initial phenol concentration, solution pH of 5 and at temperature of 23°C. The results showed the adsorption process was fast and it reached equilibrium in 3 h. Petroleum coke and MWNT had poor adsorption which could reach the removal efficiency of phenol with 43.18% and 36.64% respectively. The granular activated carbon possessed good adsorption ability to phenol with 96.40% at the optimum dosage 5g and optimum time 90min.The powdered activated carbon was an effective adsorbent with a maximum adsorption capacity of 42.32 mg/g.

Graphene, electrospun membranes and granular activated carbon for eliminating heavy metals, pesticides and bacteria in water and wastewater treatment processes

The Analyst ◽  
2018 ◽  
Vol 143 (23) ◽  
pp. 5629-5645 ◽  
Author(s):  
Piumie Rajapaksha P. ◽  
Aoife Power ◽  
Shaneel Chandra ◽  
James Chapman
Keyword(s):  
Heavy Metals ◽  
Wastewater Treatment ◽  
Activated Carbon ◽  
Granular Activated Carbon ◽  
Water And Wastewater Treatment ◽  
Safe Water ◽  
Treatment Processes ◽  
Electrospun Membranes ◽  
Water And Wastewater

The availability of safe water has a significant impact on all parts of society, its growth and sustainability, both politically and socioeconomically.

Removal of heavy metals from landfill leachate using zero valent iron and granular activated carbon

2018 ◽  
Vol 41 (4) ◽  
pp. 498-510 ◽  
Author(s):  
Stefania Bilardi ◽  
Paolo Salvatore Calabrò ◽  
Rosa Greco ◽  
Nicola Moraci
Keyword(s):  
Heavy Metals ◽  
Activated Carbon ◽  
Landfill Leachate ◽  
Granular Activated Carbon ◽  
Zero Valent Iron ◽  
Removal Of Heavy Metals

scholarly journals Phenol adsorption onto coffee waste - granular activated carbon: kinetics and equilibrium studies in aqueous solutions

2017 ◽  
Vol 90 ◽  
pp. 231-240 ◽  
Author(s):  
María de la Luz Díaz de León-Garza ◽  
Eduardo Soto-Regalado ◽  
Margarita Loredo-Cancino ◽  
Felipe de Jesús Cerino-Cordova ◽  
Refugio Bernardo García-Reyes ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Aqueous Solutions ◽  
Granular Activated Carbon ◽  
Equilibrium Studies ◽  
Phenol Adsorption ◽  
Coffee Waste

Immobilized biofilms on granular activated carbon for removal and accumulation of heavy metals from contaminated streams

1998 ◽  
Vol 38 (8-9) ◽  
pp. 197-204 ◽  
Author(s):  
J. A. Scott ◽  
A. M. Karanjkar
Keyword(s):  
Heavy Metals ◽  
Activated Carbon ◽  
Mine Tailings ◽  
Metal Uptake ◽  
Granular Activated Carbon ◽  
Industrial Wastes ◽  
Organic Residues ◽  
Dump Site ◽  
Contaminated Streams

Biofilms consisting of a matrix of exopolysaccharide and microorganisms developed over granular activated carbon (GAC) enhance metal uptake from solution several times more than that achieved by GAC alone. By specifically employing GAC, there is also the opportunity of developing biofilm/GAC systems that can both entrap metals and also adsorb, and ultimately degrade, polluting organic residues such as pesticides. Targets for this type of process could be dump site leachates, mine tailings and other industrial wastes. The conditions under which the biofilm is developed, including pH and temperature have, therefore, been studied in terms of subsequent influence on metal bisorption.

Sign in / Sign up

Export Citation Format

Share Document