Rapid removal of heavy metal ions from aqueous solutions by low cost adsorbents
نویسنده:
, , , , , ,سال
: 2012
چکیده: In the present investigation, different agricultural solid wastes
namely: eggplant hull (EH), almond green hull (AGH), and walnut shell (WS),
that are introduced as low cost adsorbents, were used for the removal of heavy
metals (cobalt, strontium and mercury ions) from aqueous solutions. Activation
process and/or chemical treatments using H2O2 and NH3 were performed
on these raw materials to increase their adsorption performances. The
effectiveness of these adsorbents was studied in batch adsorption mode under a
variety of experimental conditions such as: different chemical treatments,
various amounts of adsorbents, initial metal-ion concentrations, pH of
solutions, contact times, and solution temperatures. High metal adsorption
efficiencies were achieved for all cases only in the first two to three minutes of
adsorbents’ contact time.
Maximum adsorption capacity of AGH sorbent for cobalt and EH for
mercury were found to be 45.5 mg/g and 147.06 mg/g, respectively. The
adsorption capacity of mercury for WS was also obtained as 151.5 and 100.9
mg/g for two different treated sorbents.
namely: eggplant hull (EH), almond green hull (AGH), and walnut shell (WS),
that are introduced as low cost adsorbents, were used for the removal of heavy
metals (cobalt, strontium and mercury ions) from aqueous solutions. Activation
process and/or chemical treatments using H2O2 and NH3 were performed
on these raw materials to increase their adsorption performances. The
effectiveness of these adsorbents was studied in batch adsorption mode under a
variety of experimental conditions such as: different chemical treatments,
various amounts of adsorbents, initial metal-ion concentrations, pH of
solutions, contact times, and solution temperatures. High metal adsorption
efficiencies were achieved for all cases only in the first two to three minutes of
adsorbents’ contact time.
Maximum adsorption capacity of AGH sorbent for cobalt and EH for
mercury were found to be 45.5 mg/g and 147.06 mg/g, respectively. The
adsorption capacity of mercury for WS was also obtained as 151.5 and 100.9
mg/g for two different treated sorbents.
کلیدواژه(گان): Environment,Heavy metals,Removal,Low cost adsorbents
کالکشن
:
-
آمار بازدید
Rapid removal of heavy metal ions from aqueous solutions by low cost adsorbents
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| contributor author | علی احمدپور | en |
| contributor author | طاهره روحانی بسطامی | en |
| contributor author | معصومه طهماسبی | en |
| contributor author | Mohammad Zabihi | en |
| contributor author | Ali Ahmadpour | fa |
| contributor author | Tahereh Rohani Bastami | fa |
| contributor author | Masoumeh Tahmasbi | fa |
| date accessioned | 2020-06-06T13:11:24Z | |
| date available | 2020-06-06T13:11:24Z | |
| date issued | 2012 | |
| identifier uri | https://libsearch.um.ac.ir:443/fum/handle/fum/3345197?locale-attribute=fa | |
| description abstract | In the present investigation, different agricultural solid wastes namely: eggplant hull (EH), almond green hull (AGH), and walnut shell (WS), that are introduced as low cost adsorbents, were used for the removal of heavy metals (cobalt, strontium and mercury ions) from aqueous solutions. Activation process and/or chemical treatments using H2O2 and NH3 were performed on these raw materials to increase their adsorption performances. The effectiveness of these adsorbents was studied in batch adsorption mode under a variety of experimental conditions such as: different chemical treatments, various amounts of adsorbents, initial metal-ion concentrations, pH of solutions, contact times, and solution temperatures. High metal adsorption efficiencies were achieved for all cases only in the first two to three minutes of adsorbents’ contact time. Maximum adsorption capacity of AGH sorbent for cobalt and EH for mercury were found to be 45.5 mg/g and 147.06 mg/g, respectively. The adsorption capacity of mercury for WS was also obtained as 151.5 and 100.9 mg/g for two different treated sorbents. | en |
| language | English | |
| title | Rapid removal of heavy metal ions from aqueous solutions by low cost adsorbents | en |
| type | Journal Paper | |
| contenttype | External Fulltext | |
| subject keywords | Environment | en |
| subject keywords | Heavy metals | en |
| subject keywords | Removal | en |
| subject keywords | Low cost adsorbents | en |
| journal title | International Journal of Global Environmental Issues | fa |
| pages | 318-331 | |
| journal volume | 12 | |
| journal issue | 2 | |
| identifier link | https://profdoc.um.ac.ir/paper-abstract-1032530.html | |
| identifier articleid | 1032530 |