Synthesis and characterization of novel sulfanilic acid–polyvinyl chloride–polysulfone blend membranes for metal ion rejection

RSC Advances ◽  
2016 ◽  
Vol 6 (30) ◽  
pp. 25492-25502 ◽  
Author(s):  
Vignesh Nayak ◽  
M. S. Jyothi ◽  
R. Geetha Balakrishna ◽  
Mahesh Padaki ◽  
Arun M. Isloor
Keyword(s):  
Polyvinyl Chloride ◽  
Metal Ion ◽  
High Efficiency ◽  
Metal Removal ◽  
Heavy Metal Removal ◽  
Sulfanilic Acid ◽  
Synthesis And Characterization ◽  
Ion Rejection ◽  
Blend Membranes

A novel facile method is developed for the modification of polyvinyl chloride and blend membranes are fabricated for heavy metal removal. This method is straightforward, has a high efficiency and is done at low pressure.

scholarly journals Comparison of the experimental results with the Langmuir and Freundlich models for copper removal on limestone adsorbent

2019 ◽  
Vol 9 (8) ◽  
Author(s):  
Thair Sharif Khayyun ◽  
Ayad Hameed Mseer
Keyword(s):  
Heavy Metal ◽  
Metal Ion ◽  
High Efficiency ◽  
Metal Removal ◽  
Heavy Metal Removal ◽  
Equilibrium Concentration ◽  
Freundlich Isotherm ◽  
Isotherm Model ◽  
Batch Adsorption ◽  
Empirical Constant

Abstract The purpose of this study was to investigate the possibility of the limestone as an adsorbed media and low-cost adsorbent. Batch adsorption studies were conducted to examine the effects of the parameters such as initial metal ion concentration C0, particle size of limestone DL, adsorbent dosage and equilibrium concentration of heavy metal Ce on the removal of the heavy metal (Cu) from synthetic water solution by limestone. The removal efficiency is increased with the increase in the volume of limestone (influenced by the media specific area). It has been noted that the limestone with diameter of 3.75 is the most effective size for removal of copper from synthetic solution. The adsorption data were analyzed by the Langmuir and Freundlich isotherm model. The average values of the empirical constant and adsorption constant (saturation coefficient) for the Langmuir equation were a = 0.022 mg/g and b = 1.46 l/mg, respectively. The average values of the Freundlich adsorption constant and empirical coefficient were Kf = 0.010 mg/g and n = 1.58 l/mg, respectively. It was observed that the Freundlich isotherm model described the adsorption process with high coefficient of determination R2, better than the Langmuir isotherm model and for low initial concentration of heavy metal. Also, when the values of amount of heavy metal removal from solution are predicted by the Freundlich isotherm model, it showed best fits the batch study. It is clear from the results that heavy metal (Cu) removal with the limestone adsorbent appears to be technically feasible and with high efficiency.

Synthesis and characterization of acrylic acid-2-hydroxyethyl methacrylate IPN hydrogels

RSC Advances ◽  
2015 ◽  
Vol 5 (93) ◽  
pp. 75870-75880 ◽  
Author(s):  
Rabin Bera ◽  
Ayan Dey ◽  
Arpan Datta sarma ◽  
Debabrata Chakrabarty
Keyword(s):  
Heavy Metal ◽  
Acrylic Acid ◽  
Metal Removal ◽  
Heavy Metal Removal ◽  
Morphological Properties ◽  
Synthesis And Characterization ◽  
Hydroxyethyl Methacrylate ◽  
Poly Acrylic Acid

Three different methods have been developed to crosslink the poly(acrylic acid-2-hydroxyethyl methacrylate) to form the hydrogels having tunable swelling, rheological and morphological properties with applicability in dye and heavy metal removal.

Synthesis and characterization of immobilized 1-(1,3-diphenyl-5-hydroxy-1H-pyrazol-4-yl)ethanone on silica gel and its use for aqueous heavy metal removal

2019 ◽  
Vol 142 ◽  
pp. 213-224 ◽  
Author(s):  
Farah Suhail ◽  
Madeeha Batool ◽  
Muhammad Imran Din ◽  
Misbahul Ain Khan ◽  
Khurshid Ayub ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Silica Gel ◽  
Metal Removal ◽  
Heavy Metal Removal ◽  
Synthesis And Characterization

Application of Immobilized Fungi Phanerochaete chrysosporium in Removal of Heavy-Metals from Wastewater

2013 ◽  
Vol 779-780 ◽  
pp. 1674-1677 ◽  
Author(s):  
Dan Lian Huang ◽  
Guang Ming Zeng ◽  
Piao Xu ◽  
Cui Lai ◽  
Mei Hua Zhao ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Iron Oxide ◽  
Magnetic Nanoparticles ◽  
Phanerochaete Chrysosporium ◽  
High Efficiency ◽  
Metal Removal ◽  
Heavy Metal Removal ◽  
Removal Of Heavy Metals ◽  
Iron Oxide Magnetic Nanoparticles ◽  
Ca Alginate

Immobilized microbe technologies are expected to be effectively used in wastewater treatment. Removal of heavy-metals from wastewater by immobilized Phanerochaete chrysosporium (Pc) with Ca-alginate and iron oxide magnetic nanoparticles (MNPs) was studied. The results showed that a biosorbent as Pc immobilized by Ca-alginate and iron oxide magnetic nanoparticles was successfully developed. And the iron oxide magnetic nanoparticles played an important role in the increase of biosorption capacity of Pc. Energy dispersive spectrometer (EDS) analysis confirmed that metal ions adsorbed to the surface of the biosorbents were partly transmitted to the interior of biosorbents, mainly embedded with iron oxide nanoparticles and Ca-alginate. Moreover, it was found that MNPs-Ca-alginate immobilized Pc showed a good affinity to various heavy metals, such as Pb(II), Zn(II), Cd(II) or Mg(II) and so on. The results proved the high efficiency of the biosorbents for heavy-metal removal and its potential application in the treatment of metal-containing wastewater.

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