Optimization of synthesis condition for carboxymethyl cellulose-based hydrogel from rice straw by microwave-assisted method and its application in heavy metal ions removal

2017 ◽  
Vol 93 (2) ◽  
pp. 413-425 ◽  
Author(s):  
Noppadol Panchan ◽  
Chalida Niamnuy ◽  
Peerapan Dittanet ◽  
Sakamon Devahastin
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Rice Straw ◽  
Carboxymethyl Cellulose ◽  
Heavy Metal Ions ◽  
Synthesis Condition ◽  
Microwave Assisted ◽  
Heavy Metal Ions Removal ◽  
Microwave Assisted Method ◽  
Metal Ions Removal

Husbandry waste derived coralline-like composite biomass material for efficient heavy metal ions removal

2021 ◽  
pp. 125408
Author(s):  
Yanchen Zhu ◽  
Xin Wang ◽  
Zilong Li ◽  
Yunxiang Fan ◽  
Xujing Zhang ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Heavy Metal Ions Removal ◽  
Metal Ions Removal

Preparation and characterization of cellulose-based adsorbent and its application in heavy metal ions removal

2019 ◽  
Vol 206 ◽  
pp. 837-843 ◽  
Author(s):  
Jian Wang ◽  
Min Liu ◽  
Chao Duan ◽  
Jianpeng Sun ◽  
Yaowei Xu
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Heavy Metal Ions Removal ◽  
Metal Ions Removal

scholarly journals Nanocelllulose Based Adsorbents for Heavy Metal Ions Removal

2021 ◽  
Author(s):  
Rongrong Si ◽  
Daiqi Wang ◽  
Yehong Chen ◽  
Dongmei Yu ◽  
Qijun Ding ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Ions ◽  
Metal Ion ◽  
Heavy Metal Ions ◽  
High Performance ◽  
Advanced Technologies ◽  
Good Biocompatibility ◽  
Heavy Metal Ions Removal ◽  
Metal Ions Removal

Abstract Heavy metal ion pollutions are of serious threat for our human health, and advanced technologies on removal of heavy metal ions in water or soil are in the focus of intensive research worldwide. Nanocellulose based adsorbents are emerging as an environmentally friendly appealing materials platform for heavy metal ions removal as nanocellulose has higher specific surface area, excellent mechanical properties and good biocompatibility. In this review, we briefly compare the differences of three kinds of nanocellulose and their preparation method. Then we cover the most recent work on nanocellulose based adsorbents for heavy metal ions removal, and present an in-depth discussion of the modification technologies for nanocellulose in assembling high performance heavy ions adsorbent process. By introducing functional groups, such as amino, carboxyl, phenolic hydroxyl, and thiol, the nanocellulose based adsorbents not only remove single heavy metal ions through ion exchange, chelation/complexation/coordination, electrostatic attraction, hydrophobic actions, binding affinity and redox reactions, but also can selectively adsorb multiple heavy ions in water. Finally, some challenges of nanocellulose based adsorbents for heavy metal ions are also prospected. We anticipate that the review supplies some guides for nanocellulose based adsorbents applied in heavy metal ions removal field.

scholarly journals Modified ion exchange jackfruit seeds resin for removal of selected trace heavy metal ions from aqueous solution

2021 ◽  
Vol 2 (2) ◽  
pp. 84-92
Author(s):  
S N Ndung’u ◽  
E W Nthiga ◽  
R N Wanjau
Keyword(s):  
Heavy Metal ◽  
Ion Exchange ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Active Sites ◽  
Ion Exchange Resin ◽  
Standard Entropy ◽  
Environmentally Sustainable ◽  
Heavy Metal Ions Removal ◽  
Metal Ions Removal

Water is essential for every life processes. However, its quality is deteriorating every day due to the recent industrial advancements. Anthropogenic processes such as industrialization, mining and agricultural activities have led to alarming discharge of heavy metal ions to the aquatic bodies. This possess a greater threat to human, animal and the entire ecosystem wellbeing. Accumulation of heavy metal ions in drinking water beyond permissible limits is detrimental to human health. Therefore, their removal is paramount. Conventional remediation techniques have been employed but have remained expensive and not universally appropriate. This has therefore spurred research interests in the use of adsorption techniques from locally available materials as an environmentally sustainable alternative. Jackfruit seeds are discarded as wastes of a Jackfruit and can be utilized as an ion exchange resin in heavy metal ions removal from wastewater. The present study involved application of previously prepared raw and modified Jackfruit seed resins to study thermodynamics of copper (II), lead (II) and cadmium (II) ions adsorption from synthetic water. FTIR results showed presence of functional groups in raw and modified resins as important sites for studying thermodynamics of adsorption of copper (II), lead (II) and cadmium (II) ions. Thermodynamic data showed that standard Gibb’s free energy () values for all metals were negative indicating that adsorption process was feasible and favourable. Standard enthalpy change (), standard entropy () and activation energy () were positive (> 40 kJ mol-1) and in the order lead (II) > copper (II) > cadmium (II). This confirmed adsorption of copper (II), lead (II) and cadmium (II) ions onto both raw and modified resins was predominated by chemical interactions between the metal ions and the resin active sites. This was confirmed by very low values of sticking probability (S*). The findings indicated that ion exchange Jackfruit seeds resin is promising for heavy metal ions removal from wastewater in an optimized temperature controlled system.

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