Study on the Copper Ion Removal from Water by Adsorption

2014 ◽  
Vol 1010-1012 ◽  
pp. 876-879
Author(s):  
Li Bo Liu ◽  
Li Zhang ◽  
Wei Ming Gong
Keyword(s):  
Copper Ions ◽  
Adsorption Property ◽  
Low Cost ◽  
Copper Ion ◽  
Oyster Shell ◽  
Adsorptive Capacity ◽  
Ion Removal ◽  
Oyster Shell Powder ◽  
Addition Amount ◽  
Shell Powder

The feasibility of using oyster shell powder for the removal of Cu2+ from aqueous solutions was investigated employing an adsorption technique. Oyster shell powder with different size was prepared. Its adsorption property to copper ions was studied. It was found that in an aqueous medium of pH 7.0, the adsorptive capacity of copper ions increased gradually with the increase of adsorption time, the addition amount of oyster shell powder and decrease of particle size. Compared with other treatment methods, this method has advantages of simple process, low cost, good treatment effect, it has a good application prospect.

scholarly journals Oyster Shell Powder, Zeolite and Red Mud as Binders for Immobilising Toxic Metals in Fine Granular Contaminated Soils (from Industrial Zones in South Korea)

2021 ◽  
Vol 18 (5) ◽  
pp. 2530
Author(s):  
Cecilia Torres-Quiroz ◽  
Janith Dissanayake ◽  
Junboum Park
Keyword(s):  
Toxic Metals ◽  
Red Mud ◽  
Contaminated Soils ◽  
Low Cost ◽  
Oyster Shell ◽  
Artificial Soil ◽  
Contaminated Sites ◽  
Metal Mine ◽  
Oyster Shell Powder ◽  
Shell Powder

Low-cost absorbent materials have elicited the attention of researchers as binders for the stabilisation/solidification technique. As, there is a no comprehensive study, the authors of this paper investigated the performance of Oyster shell powder (OS), zeolite (Z), and red mud (RM) in stabilising heavy metals in three types of heavy metal-contaminated soils by using toxicity characteristic leaching procedure (TCLP). Samples were collected from surroundings of an abandoned metal mine site and from military service zone. Furthermore, a Pb-contaminated soil was artificially prepared to evaluate each binder (100× regulatory level for Pb). OS bound approximately 82% of Pb and 78% of Cu in real cases scenario. While Z was highly effective in stabilizing Pb in highly polluted artificial soil (>50% of Pb) at lower dosages than OS and RM, it was not effective in stabilising those metals in the soils obtained from the contaminated sites. RM did not perform consistently stabilising toxic metals in soils from contaminated sites, but it demonstrated a remarkable Pb-immobilisation under dosages over than 5% in the artificial soil. Further, authors observed that OS removal efficiency reached up to 94% after 10 days. The results suggest that OS is the best low-cost adsorbent material to stabilize soils contaminated with toxic metals considered in the study.

The effect of oyster shell powder on the extension of the shelf life of tofu

2007 ◽  
Vol 103 (1) ◽  
pp. 155-160 ◽  
Author(s):  
Young Soon Kim ◽  
Yang Mun Choi ◽  
Dong Ouk Noh ◽  
Seung Yong Cho ◽  
Hyung Joo Suh
Keyword(s):  
Shelf Life ◽  
Oyster Shell ◽  
Oyster Shell Powder ◽  
Shell Powder

Rendering polypropylene biocomposites antibacterial through modification with oyster shell powder

Polymer ◽  
2019 ◽  
Vol 160 ◽  
pp. 265-271 ◽  
Author(s):  
Chi-Hui Tsou ◽  
Chin-San Wu ◽  
Wei-Song Hung ◽  
Manuel Reyes De Guzman ◽  
Chen Gao ◽  
...  
Keyword(s):  
Oyster Shell ◽  
Oyster Shell Powder ◽  
Shell Powder

scholarly journals Calcined Oyster Shell Powder as an Expansive Additive in Cement Mortar

Materials ◽  
2019 ◽  
Vol 12 (8) ◽  
pp. 1322 ◽  
Author(s):  
Joon Ho Seo ◽  
Sol Moi Park ◽  
Beom Joo Yang ◽  
Jeong Gook Jang
Keyword(s):  
Compressive Strength ◽  
Cement Mortar ◽  
Autogenous Shrinkage ◽  
Oyster Shell ◽  
Heat Of Hydration ◽  
Strength Development ◽  
Flow Loss ◽  
Hardened Properties ◽  
Oyster Shell Powder ◽  
Shell Powder

The present study prepared calcined oyster shell powder having chemical composition and crystal structure of calcium oxide and lime, respectively, and investigated the fresh and hardened properties of cement mortar incorporating calcined oyster shell powder as an additive. The test results indicated that the hydration of calcined oyster shell powder promoted the additional formation of Ca(OH)2 at the initial reaction stage, thereby increasing the heat of hydration. In particular, the volumetric increase of calcined oyster shell powder during hydration compensated the autogenous shrinkage of mortar at early ages, ultimately leading to a clear difference in the shrinkage values at final readings. However, an excessive incorporation of calcined oyster shell powder affected the rate of C–S–H formation in the acceleratory period of hydration, resulting in a decrease in the compressive strength development. Meanwhile, the degree of flow loss was inconsequential and rapid flow loss was not observed in the specimens with calcined oyster shell powder. Therefore, considering the fresh and hardened properties of cement mortar, the incorporation of calcined oyster shell powder of approximately 3% by weight of cement is recommended to enhance the properties of cement mortar in terms of compressive strength and autogenous shrinkage.

Fire-retardant plastic material from oyster-shell powder and recycled polyethylene

2005 ◽  
Vol 99 (4) ◽  
pp. 1583-1589 ◽  
Author(s):  
Mi Hwa Chong ◽  
Byoung Chul Chun ◽  
Yong-Chan Chung ◽  
Bong Gyoo Cho
Keyword(s):  
Plastic Material ◽  
Fire Retardant ◽  
Oyster Shell ◽  
Recycled Polyethylene ◽  
Oyster Shell Powder ◽  
Shell Powder

3D printed porous polycaprolactone/oyster shell powder (PCL/OSP) scaffolds for bone tissue engineering

2018 ◽  
Vol 5 (4) ◽  
pp. 045403 ◽  
Author(s):  
Wenfeng Luo ◽  
Shuangying Zhang ◽  
Yuewei Lan ◽  
Chen Huang ◽  
Chao Wang ◽  
...  
Keyword(s):  
Tissue Engineering ◽  
Bone Tissue Engineering ◽  
Bone Tissue ◽  
Oyster Shell ◽  
3D Printed ◽  
Oyster Shell Powder ◽  
Shell Powder

scholarly journals Superhydrophobic foam prepared from high internal phase emulsion templates stabilised by oyster shell powder for oil–water separation

RSC Advances ◽  
2019 ◽  
Vol 9 (31) ◽  
pp. 17543-17550 ◽  
Author(s):  
Chuan-ming Yu ◽  
Xiao-hui Zhuang ◽  
Sheng-wei Zeng ◽  
Qi-xing Dong ◽  
Zhan-xin Jing ◽  
...  
Keyword(s):  
Oyster Shell ◽  
Water Separation ◽  
High Internal Phase Emulsion ◽  
Internal Phase ◽  
Styrene Divinylbenzene ◽  
Oil Water Separation ◽  
Oil Water ◽  
Oyster Shell Powder ◽  
Span 80 ◽  
Shell Powder

Poly(styrene-divinylbenzene) foam was synthesized through a high internal phase emulsion (HIPE) technique with Span 80 and superfine oyster shell powder as a co-emulsifier, and the foam exhibited excellent superhydrophobicity and oleophilicity.

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