Author:Mittal, H; Kumar, V; Saruchi; Ray, Suprakas SDate:Aug 2016This research paper reports the utilization of gum xanthan-grafted-polyacrylic acid and Fe(sub3)O(sub4) magnetic nanoparticles based nanocomposite hydrogel (NCH) for the highly effective adsorption of methyl violet (MV) from aqueous solution. ...Read more
Author:Masindi, Vhahangwele; Gitari, WM; Pindihama, KGDate:Nov 2015The use of low-cost and locally available material in the treatment of wastewater has recently become an issue of interest, and magnesite as a low-cost material has been used for the removal of heavy metals in wastewater and has also shown ...Read more
Author:Vhahangwele, M; Mugera, GW; Tholiso, NDate:Nov 2014Al(sup3+)-bentonite clay (Alum-bent) was prepared by ion exchange of base cations on the matrices of bentonite clay. Intercalation of bentonite clay with Al(sup3+) was performed in batch experiments. Parameters optimized include time, dosage, ...Read more
Author:Mittal, H; Maity, Arjun; Ray, SSDate:Aug 2015Biodegradable hydrogels of gum ghatti (Gg) with a co-polymer mixture of acrylamide (AAm) and methacrylic acid (MAA) (termed as Gg-cl-P(AAm-co-MAA)) were synthesised by microwave-assisted free radical graft co-polymerisation technique. The ...Read more
Author:Bhaumik, M; McCrindle, RI; Maity, ArjunDate:Jan 2015In this study, a simple approach was described for the fabrication of composite nanofibers (CNFs) of polyaniline/Fe0 (PANI/Fe0) using a template-free method for the reductive degradation and removal of Congo red (CR) from aqueous solutions. ...Read more
Author:Ngulube, T; Gumbo, JR; Masindi, Vhahangwele; Maity, ArjunDate:Jun 2019The present work describes the removal of Direct Red 81, Methyl Orange, Methylene Blue and Crystal Violet from aqueous solution using halloysite nanotubes. The clay mineral was physicochemically characterized using various methods. The ...Read more
Author:Setshedi, Katlego Z; Bhaumik, M; Songwane, S; nyango, MS; Maity, ArjunDate:2013Exfoliated polypyrrole-organically modified montmorillonite clay nanocomposite (PPy OMMT NC), was prepared as a potential adsorbent, via in situ polymerization of pyrrole monomer for adsorption of toxic Cr(VI) from aqueous solution. The WAXD ...Read more
Author:Arunachellan, IC; Sypu, VS; Kera, NH; Pillay, K; Maity, ArjunDate:Aug 2021In the present work, raw waste material obtained from polluting dried tree fibres (raw TF) as a source of natural carbon was used for the removal of contaminating copper ions in water. Through two sequential steps of oxidation, carbonaceous ...Read more
Author:Cele, Zamani ED; Somboro, AM; Amoako, DG; Ndlandla, Lindokuhle F; Balogun, Mohammed ODate:Nov 2020Chitosan has become an established platform biopolymer with applications in biomedical engineering, nanomedicine, and the development of new materials with improved solubility, antimicrobial activity, and low toxicity. In this study, a series ...Read more
Author:Oliphant, CJ; Arendse, CJ; Knoesen, D; Muller, TFG; Prins, S; Malgas, GFDate:May 2011The authors report on the growth kinetics of hydrogenated nanocrystalline silicon, with specific focus on the effects of the deposition time and hydrogen dilution on the nano-structural properties. The growth in the crystallite size, attributed ...Read more
Author:Nkosi, D; Pillay, J; Ozoemena, KI; Nouneh, K; Oyama, MDate:Jan 2010The electron transfer dynamics and electrocatalytic behaviour of ferrocene-terminated self-assembled monolayers (SAMs), co-adsorbed with single-walled carbon nanotubes (SWCNTs) on a gold electrode, have been interrogated for the first time. ...Read more
Author:Ballav, N; Maity, Arjun; Mishra, SBDate:Aug 2012Glycine doped polypyrrole (PPy-gly) adsorbent was prepared via in situ polymerization of pyrrole (Py) monomer in the presence of glycine (gly) for the removal of Cr(VI). Formation of PPy homopolymer and inclusion of gly in the PPy matrix were ...Read more
Author:Masindi, Vhahangwele; Gitari, WM; Ngulube, TDate:Sep 2015In the present study, the defluoridation capabilities and adsorption mechanisms of cryptocrystalline magnesite were evaluated. All experiments were done by batch procedure. Conditions assessed include time, dosage, concentration, pH and the ...Read more
Author:Chigondo, M; Paumo, HK; Bhaumik, M; Pillay, K; Maity, ArjunDate:Feb 2019Magnetic arginine-functionalized polypyrrole (Fe3O4@Arg-PPy) nanocomposite was fabricated by in-situ polymerisation of pyrrole (Py) monomer in the presence of arginine and Fe3O4 nanoparticles for toxic chromium(VI) ions removal from simulated ...Read more
Author:Wokadala, OC; Ray, SS; Bandyopadhyay, J; Wesley-Smith, J; Emmambux, NMDate:Aug 2015Polylactide/butylated-starch/nanoclay (70/25.5/4.5 wt%) composites were prepared by melt blending with nanoclays of varying hydrophobicity. Electron microscopy studies indicated that the interphase boundary interaction was highest in the clay ...Read more
Author:Zvimba, JN; Siyakatshana, Njabulo; Mathye, MatlhodiDate:Dec 2015This study investigated passive neutralization of acid mine drainage using basic oxygen furnace slag as neutralization material over 90 days, with monitoring of parameters quality and assessment of their removal kinetics. The quality was ...Read more
Author:Masindi, Vhahangwele; Gitari, MWDate:May 2016The present study aimed to evaluate the efficiency of using cryptocrystalline magnesite to remove boron ions from aqueous systems. Batch experimental protocols were used to evaluate the adsorption capacity of magnesite for boron. Parameters ...Read more
Author:Masindi, Vhahangwele; Gitari, MW; Tutu, H; De Beer, MorrisDate:Mar 2015The removal of boron from industrial effluents using the composite was studied in batch equilibration technique. The effects of equilibration time, adsorbent dosage, concentration and pH on removal of boron were investigated. The experiments ...Read more
Author:Bhaumik, M; Maity, Arjun; Srinivasu, VV; Onyango, MSDate:Feb 2012Polypyrrole-polyaniline (PPy-PANI) nanofibers as adsorbent of Cr(VI) were prepared without template via coupling of propagating PPy+ and PANI+ free radicals by simultaneous polymerization of Py and ANI monomers in presence of FeCl3 oxidant. ...Read more