scholarly journals PHYSICO-CHEMICAL AND SURFACE CHARACTERISATION OF A RENEWABLE LOW-COST BIOSORBENT FOR THE UPTAKE OF HEAVY METAL IONS FROM AQUEOUS SOLUTION

2018 ◽  
Author(s):  
JOHN O. ODIYO ◽  
JOSHUA N. EDOKPAYI
Keyword(s):  
Aqueous Solution ◽  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Low Cost ◽  
Surface Characterisation ◽  
Physico Chemical

scholarly journals Insights into the Recent Use of Modified Adsorbents in Removing Heavy Metal Ions from Aqueous Solution

2021 ◽  
Vol 12 (2) ◽  
pp. 1884-1898
Keyword(s):  
Aqueous Solution ◽  
Heavy Metal ◽  
Metal Ions ◽  
Metal Ion ◽  
Heavy Metal Ions ◽  
Metal Removal ◽  
Low Cost ◽  
Ion Concentration ◽  
Future Research ◽  
Batch Tests

Natural water gets contaminated with heavy metal ions because of industrial effluents' discharge into the aquatic environment. As these heavy metal ions cause various health hazards, they should be removed from the aqueous solution. Heavy metal ion concentration in the aqueous solution is very less, so conventional metal removal and recovery processes cannot be applied here. The adsorption method is a great alternative to all these processes as it is a cost-effective and easy method. The use of natural, low-cost materials as adsorbents is eco-friendly also. However, metal uptake capacity of low-cost materials is very less. So, modification is required for low-cost materials to increase their efficiency. In the present review, different modification procedures adopted by different researchers have been discussed. Different low-cost materials used are sawdust, fruit and vegetable wastes, soil, minerals, etc. The modifying agents are heat, acids, bases, and other chemicals. Nevertheless, most of the studies are limited to batch tests only. Future research should be carried out on the extension of batch tests to column study for the large-scale treatment of contaminated water, and the cost of modification procedures and their impact on the environment should also be assessed.

scholarly journals Preparation of Activated and Non-Activated Carbon from Conocarpus Pruning Waste as Low-Cost Adsorbent for Removal of Heavy Metal Ions from Aqueous Solution

BioResources ◽  
2015 ◽  
Vol 11 (1) ◽  
Author(s):  
Ahmed H. El-Naggar ◽  
Abdalwahab K. R. Alzhrani ◽  
Mahtab Ahmad ◽  
Adel R. A. Usman ◽  
Dinesh Mohan ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Heavy Metal ◽  
Activated Carbon ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Low Cost

Metakaolin Based Geopolymer from Thailand as an Adsorbent for Adsorption of Multi- and Mono- Cations from Aqueous Solution

2018 ◽  
Vol 777 ◽  
pp. 245-250 ◽  
Author(s):  
Sujitra Onutai ◽  
Takaomi Kobayashi ◽  
Parjaree Thavorniti ◽  
Sirithan Jiemsirilers
Keyword(s):  
Aqueous Solution ◽  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Raw Materials ◽  
Low Cost ◽  
Good Alternative ◽  
Amorphous Structure ◽  
Bet Surface Area ◽  
Metakaolin Geopolymer

Waste management and water quality are two main problems nowadays. Geopolymer material has efficiency for adsorbing the ions from wastewater. In this research, the metakaolin based geopolymer was studied and used as an adsorbent to remove heavy metal ions. Moreover, the factors which affect adsorption process of heavy metals on geopolymer materials were investigated. The kaolin as used in this research was from Thailand. The metakaolin geopolymer was synthesized by mixed raw materials with an alkaline solution. The metakaolin geopolymer was washed and sieved through 100 mesh. The produced metakaolin geopolymer powder was used as an adsorbent. The XRD results showed a highly amorphous structure in obtained metakaolin geopolymer. Moreover, the BET surface area of metakaolin and geopolymer particles were 9.83 m2/g and 20.36 m2/g, respectively. The parameters of adsorbent amount, initial pH, time of shaking, temperature and initial metal ions concentration on the removal potential of geopolymer were studied. In addition, the multi-and mono-cations solution were demonstrated to compare the efficiency of each heavy metal ions. The results showed that the amount of Pb2+, Cu2+, Cd2+, and Ni2+ions adsorbed onto metakaolin geopolymer increased with an increasing contact time, pH, temperature and amount of geopolymer. It is concluded that Pb2+, Cu2+, Cd2+, and Ni2+ions in aqueous solution are efficiently removed by metakaolin geopolymer which could be applied as a low cost and good alternative for wastewater treatment.

Comparative Bio-sorption of Cadmium and Nickel Ions from Aqueous Solution onto Fibers of Date Palm using Fluidized Bed Column

2019 ◽  
Vol 70 (5) ◽  
pp. 1507-1512
Author(s):  
Baker M. Abod ◽  
Ramy Mohamed Jebir Al-Alawy ◽  
Firas Hashim Kamar ◽  
Gheorghe Nechifor
Keyword(s):  
Aqueous Solution ◽  
Heavy Metal ◽  
Metal Ions ◽  
Fluidized Bed ◽  
Removal Efficiency ◽  
Heavy Metal Ions ◽  
Date Palm ◽  
Operating Conditions ◽  
Initial Concentration ◽  
Bed Height

The aim of this study is to use the dry fibers of date palm as low-cost biosorbent for the removal of Cd(II), and Ni(II) ions from aqueous solution by fluidized bed column. The effects of many operating conditions such as superficial velocity, static bed height, and initial concentration on the removal efficiency of metal ions were investigated. FTIR analyses clarified that hydroxyl, amine and carboxyl groups could be very effective for bio-sorption of these heavy metal ions. SEM images showed that dry fibers of date palm have a high porosity and that metal ions can be trapped and sorbed into pores. The results show that a bed height of 6 cm, velocity of 1.1Umf and initial concentration for each heavy metal ions of 50 mg/L are most feasible and give high removal efficiency. The fluidized bed reactor was modeled using ideal plug flow and this model was solved numerically by utilizing the MATLAB software for fitting the measured breakthrough results. The breakthrough curves for metal ions gave the order of bio-sorption capacity as follow: Cd(II)]Ni(II).

scholarly journals Biodegradable composite adsorbents of modified cellulose and chitosan to remove heavy metal ions from aqueous solution

2021 ◽  
pp. 100119
Author(s):  
Md Hafezur Rahaman ◽  
Md Ataul Islam ◽  
Md Monjurul Islam ◽  
Md Aminur Rahman ◽  
Nur SM. Alam
Keyword(s):  
Aqueous Solution ◽  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Biodegradable Composite ◽  
Composite Adsorbents ◽  
Modified Cellulose

scholarly journals Rapid removal of heavy metal ions from aqueous solutions by low cost adsorbents

2012 ◽  
Vol 12 (2/3/4) ◽  
pp. 318 ◽  
Author(s):  
Ali Ahmadpour ◽  
Tahereh Rohani Bastami ◽  
Masumeh Tahmasbi ◽  
Mohammad Zabihi
Keyword(s):  
Heavy Metal ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Low Cost ◽  
Rapid Removal

Chelating magnetic copolymer composite modified by click reaction for removal of heavy metal ions from aqueous solution

2016 ◽  
Vol 289 ◽  
pp. 286-295 ◽  
Author(s):  
Songwut Lapwanit ◽  
Thanida Trakulsujaritchok ◽  
Piyaporn Na Nongkhai
Keyword(s):  
Aqueous Solution ◽  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Click Reaction

Removal of heavy metal ions from aqueous solution using Populus nigra sawdust-based activated carbon

2021 ◽  
Vol 221 ◽  
pp. 239-251
Author(s):  
Syed Muhammad Salman ◽  
Fouzia Kamal ◽  
Muhammad Zahoor ◽  
Muhammad Wahab ◽  
Durr e Shahwar ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Heavy Metal ◽  
Activated Carbon ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Populus Nigra

Effective removal of heavy metal ions by attapulgite supported sulfidized nanoscale zerovalent ironfrom aqueous solution

2022 ◽  
pp. 128192
Author(s):  
Minzhang Chen ◽  
Hui Xu ◽  
Yajuan Zhang ◽  
Xuefang Zhao ◽  
Yong Chen
Keyword(s):  
Aqueous Solution ◽  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Effective Removal
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