scholarly journals Application of Heavy Metal Ions Separation from Contaminated Water in Industry

2020 ◽  
Vol 9 (6) ◽  
pp. 132-134
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Contaminated Water ◽  
Constant Concentration ◽  
Concentrated Solutions ◽  
Nickel Ions ◽  
Silver Copper ◽  
Copper Nickel ◽  
Concentrated Solution

to achieve - study the sorption of silver, copper, nickel ions, the method of changing the volume of solutions of a constant concentration of metal ions is used. The amount of zeolite and constant concentrated solution is taken in such an amount that the molar (molecular) parts of the exchanged ions are in a wider range. Some concentrated solutions are taken in flasks in an amount of 20 40 60 80 120 ml and 0.5 g of zeolite are added to them, mixed and a sample is taken periodically for analysis. After 2-2.5 hours, equilibrium occurs. By measuring the density of equilibrium, the amount of sorption of ions is determined.

scholarly journals The Influence of Heavy Metal Ions on the Viability and Metabolic Enzyme Activity of the Marbled Crayfish Procambarus virginalis (Lyko, 2017)

2018 ◽  
Vol 70 ◽  
pp. 11-23 ◽  
Author(s):  
Oleg Marenkov ◽  
Mykola V. Prychepa ◽  
Julia Kovalchuk
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Enzyme Activity ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Physiological State ◽  
Metabolic Enzyme ◽  
Nickel Ions ◽  
The Individual ◽  
Marbled Crayfish

In the experiment with marbled crayfishProcambarusvirginalis(Lyko, 2017), chronic effects of various concentrations of heavy metal ions on the physiological state and enzyme activity were investigated. The obtained results showed that among the investigated heavy metals nickel ions influenced the weight indexes and mortality of crustaceans the most negatively. According to the results of the research, significant changes were noted in the individual biochemical parameters of marbled crayfish under the influence of manganese, lead and nickel ions. The most significant changes in the activity of lactate dehydrogenase were detected in muscle tissues affected by manganese and nickel ions. A significant decrease in the activity of succinate dehydrogenase in muscle of marbled crayfish was determined after the action of heavy metal ions. Investigation of changes in the activity of alkaline phosphatase under the influence of the ions of manganese, lead and nickel has its own characteristics, which indicates certain violations in the tissues of cell membranes. Changes in the activity of enzymes were also reflected in the overall protein content. Changes in these parameters may indicate a rapid biochemical response of crustaceans to the toxic effects of heavy metals.

Rice husk based nanocellulose scaffolds for highly efficient removal of heavy metal ions from contaminated water

2020 ◽  
Vol 6 (11) ◽  
pp. 3080-3090
Author(s):  
Chengbo Zhan ◽  
Priyanka R. Sharma ◽  
Hongrui He ◽  
Sunil K. Sharma ◽  
Alexis McCauley-Pearl ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Rice Husk ◽  
Heavy Metal Ions ◽  
Contaminated Water ◽  
Rice Husks ◽  
Efficient Removal ◽  
Highly Efficient

Nanocellulose scaffolds derived from rice husks could efficiently remove heavy metal ions from contaminated water.

Ligand-immobilized spent alumina catalyst for effective removal of heavy metal ions from model contaminated water

2018 ◽  
Vol 6 (4) ◽  
pp. 4623-4633 ◽  
Author(s):  
Mirabbos Hojamberdiev ◽  
Shahlo S. Daminova ◽  
Zukhra C. Kadirova ◽  
Khasan T. Sharipov ◽  
Felix Mtalo ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Contaminated Water ◽  
Alumina Catalyst ◽  
Effective Removal

Functionalized hollow MnFe2O4 nanospheres: design, applications and mechanism for efficient adsorption of heavy metal ions

2019 ◽  
Vol 43 (15) ◽  
pp. 5879-5889 ◽  
Author(s):  
Chengzhao Jin ◽  
Guixiang Teng ◽  
Yinan Gu ◽  
Hao Cheng ◽  
ShaoPeng Fu ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Adsorption Capacity ◽  
Surface Activity ◽  
Heavy Metal Ions ◽  
Contaminated Water ◽  
High Porosity ◽  
Adsorption Efficiency ◽  
High Adsorption

A l-cysteine functionalized magnetic hollow MnFe2O4 nanosphere material has been synthesised, with high magnetism, large interior cavities, and high porosity and surface activity. It has high adsorption efficiency and regenerated adsorption capacity for the removal of Cr6+ and Pb2+ in contaminated water.

scholarly journals Fluorescence Characteristics of Aqueous Synthesized Tin Oxide Quantum Dots for the Detection of Heavy Metal Ions in Contaminated Water

Nanomaterials ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 1294 ◽  
Author(s):  
Jianqiao Liu ◽  
Qianru Zhang ◽  
Weiting Xue ◽  
Haipeng Zhang ◽  
Yu Bai ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Quantum Dots ◽  
Metal Ions ◽  
Tin Oxide ◽  
Heavy Metal Ions ◽  
Deionized Water ◽  
Contaminated Water ◽  
Fluorescence Response ◽  
Average Grain Size ◽  
Fluorescence Characteristics

Tin oxide quantum dots were synthesized in aqueous solution via a simple hydrolysis and oxidation process. The morphology observation showed that the quantum dots had an average grain size of 2.23 nm. The rutile phase SnO2 was confirmed by the structural and compositional characterization. The fluorescence spectroscopy of quantum dots was used to detect the heavy metal ions of Cd2+, Fe3+, Ni2+ and Pb2+, which caused the quenching effect of photoluminescence. The quantum dots showed the response of 2.48 to 100 ppm Ni2+. The prepared SnO2 quantum dots exhibited prospective in the detection of heavy metal ions in contaminated water, including deionized water, deionized water with Fe3+, reclaimed water and sea water. The limit of detection was as low as 0.01 ppm for Ni2+ detection. The first principle calculation based on the density function theory demonstrated the dependence of fluorescence response on the adsorption energy of heavy metal ions as well as ion radius. The mechanism of fluorescence response was discussed based on the interaction between Sn vacancies and Ni2+ ions. A linear correlation of fluorescence emission intensity against Ni2+ concentration was obtained in the logarithmic coordinates. The density of active Sn vacancies was the crucial factor that determined fluorescence response of SnO2 QDs to heavy metal ions.

Removal of Heavy Metal Ions from Water Using Nano-Barium Strontium Titanate Immobilized on the Silica Gel G as an Adsorbent

2011 ◽  
Vol 71-78 ◽  
pp. 3500-3503 ◽  
Author(s):  
Dong Zhang
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Strontium Titanate ◽  
Barium Strontium Titanate ◽  
Heavy Metal Ions ◽  
Silver Ions ◽  
Copper Nickel ◽  
Barium Strontium ◽  
Nickel Cobalt ◽  
Manganese Copper

A new method based on the sorption of the nano-barium strontium titanate immobilized on the silica gel G(GBST) to heavy metal ions, included Mn(Ⅱ), Cu2+, Ni2+,Co2+and Ag+, in waste water. The effects of process parameters such as pH, contact time, regeneration conditions and the effects of common coexisting ions on the ions uptake were investigated. The results showed that the manganese, copper, nickel, cobalt and silver ions studied could be quantitatively retained at a pH value range of 7~9. The adsorption capacities of GBST for manganese, copper, nickel, cobalt and silver ions were found to be 8.2 mg/g, 18.3 mg/g, 4.2 mg/g, 2.2 mg/g and 3.1 mg/g, respectively. The heavy metal ions adsorbed on the sorbent could be eluated completely with diluted HNO3solutions. The GBST can be used as an effective adsorbent for the treatment of wastewaters contaminated with manganese, copper, nickel, cobalt and silver ions.

The Application of Red Mud on Restoring Heavy Metal Contaminated Water and Soil

2011 ◽  
Vol 225-226 ◽  
pp. 1262-1265 ◽  
Author(s):  
Yan Fei Ma ◽  
Xue Dong Feng
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Red Mud ◽  
Heavy Metal Ions ◽  
Alkali Treatment ◽  
Low Cost ◽  
Soil Microbial Activity ◽  
Contaminated Water ◽  
Environmental Restoration ◽  
Soil Microbial

Red mud as environmental restoration materials has the characteristics of low cost, simple process and controlling waste by waste. The paper introduced the application of red mud on heavy metal contaminated water and soil in details. Powdered or granular red mud both has good adsorption efficiency of Cu , Zn, Pb, Ni, Ca, Cd, As and other heavy metal ions in wastewater. Langmiur or Frendlich model can express the adsorption isotherm of red mud on heavy metal ions. Red mud can not only solidify the heavy metals in soils, but also increase the soil microbial activity and population types. At the same time, de-alkali treatment can not be ignored in the process of using red mud avoiding the second pollution to environment, and achieve the zero pollution release of red mud.

scholarly journals Treatment of Wastewater Containing a Mixture of Heavy Metal Ions (Copper-Zinc, Copper-Nickel) using Ion-Exchange Methods

2019 ◽  
Vol 20 (11) ◽  
pp. 146-151
Author(s):  
Anastasiia Koliehova ◽  
Hanna Trokhymenko ◽  
Svitlana Melnychuk ◽  
Mykola Gomelya
Keyword(s):  
Heavy Metal ◽  
Ion Exchange ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Copper Nickel ◽  
Copper Zinc
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