Simultaneous action of surfactant modified clinoptilolite: adsorbent of dyes and antibacterial agent
25 Oct 2018-Malaysian Journal of Fundamental and Applied Sciences (Penerbit UTM Press)-Vol. 14, pp 477-481
TL;DR: In this article, the simultaneous action of surfactant modified clinoptilolite (SMC) as adsorbent for dyes and its antibacterial activity was investigated by Fourier transform infrared spectroscopy, X-ray diffraction (XRD), amount of HDTMA adsorbed and dispersion behaviour.
Abstract: In this study, the simultaneous action of surfactant modified clinoptilolite (SMC) as adsorbent for dyes and its antibacterial activity was investigated. Methylene blue (MB) and acid orange 7 (AO7) represent cationic and anionic dyes, respectively were used as adsorbate in this study and the antibacterial activity was studied against Gram-negative ( Escherichia coli ATCC 11229) and Gram-positive bacteria ( Staphylococcus aureus ATCC 6538 and Enterococcus faecalis ATCC 2921). Initially, natural zeolite clinoptilolite was modified with 3 different concentrations (0.1, 1.0 and 4.0 mM) of cationic surfactant hexadecyltrimethyl ammonium bromide (HDTMA-Br). The SMC samples were characterized by Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), amount of HDTMA adsorbed and dispersion behaviour. Result from XRD shows that the HDTMA-Br molecules caused no effect on primary structure of the clinoptilolite since the clinoptilolite structure remained the same after modification with HDTMA-Br. Compared to the unmodified clinoptilolite, FTIR spectra of the SMC shows peak corresponds to C-H stretches which proved the attachment of HDTMA onto the clinoptilolite surfaces. In the dispersion behaviour study, SMC samples were located at the adjacent phase between the water and oil mixture. The amount of HDTMA-Br adsorbed onto the clinoptilolite increased with the increasing concentrations of the surfactant. The use of SMC as adsorbent and antibacterial agent were further studied against the ionic dyes and bacteria simultaneously. The results show that the adsorption capacity of SMC towards both ionic dyes increase with the increasing HDTMA-Br concentration. While for the antibacterial activity, the number of colony forming unit of bacteria seem to be highly reduced at the highest concentration of the HDTMA (4.0 mM) attached on the clinoptilolite. Hence, this study had shown that SMC has high adsorption capacity towards the ionic dyes at the same time reducing the growth of both Gram positive and negative bacteria in aquoes solution.
Citations
More filters
43 citations
TL;DR: In this paper, Saccharum munja (SM) plant biomass and its novel composites with 0.5, 1% and 2% functionalized carbon nanotube (CNT) were innovatively proposed as a versatile biosorbent for the removal of safranine O (SO) and methylene blue (MB) dyes from the single and binary systems.
Abstract: Herein, Saccharum munja (SM) plant biomass and its novel composites with 0.5%, 1% and 2% functionalized carbon nanotube (CNT) were innovatively proposed as a versatile biosorbent for the removal of safranine O (SO) and methylene blue (MB) dyes from the single and binary systems. The morphology, structure and physicochemical properties of the as-fabricated adsorbents were characterized using various techniques such as X-ray Diffraction (XRD), Fourier Transform Infrared (FTIR), Field Emission Scanning Electron Microscope (FESEM) and Differential Scanning Calorimetry (DSC). Batch adsorption studies revealed maximum removal of dyes at neutral pH and equilibrium was reached within 10 min of contact time for both the dyes. The adsorption process was modelled by the pseudo-second-order kinetics and Langmuir isotherm, where the maximum adsorption capacity of the 1%CNT+SM composite was enhanced by 336.29% and 35.49% as compared to raw SM, in the case of SO and MB dye respectively. Interestingly, the raw SM and its composites showed a higher affinity in the binary system towards the removal of SO (82.56-95.67%) as compared to MB (80.67-94.24%) dye. Regeneration studies depicted excellent reusability even after the tenth sequential adsorption–desorption cycle, which makes these adsorbents a promising material for wastewater remediation.
22 citations
TL;DR: In this paper , cetyltrimethylammonium bromide (CTAB) surfactant was used for the modification of Saccharum munja based bio-composite containing 1% functionalized carbon nanotube (CNT).
17 citations
25 Mar 2013
TL;DR: In this article, the adsorption of phenol onto zeolites modified by silylation was studied, in which trimethylchlorosilane (TMCS) was used to increase their hydrophobic character.
Abstract: The present work consists in studying the adsorption of phenol onto zeolites Y modified by silylation, in order to increase their hydrophobic character. The operation was carried out by chemical liquid deposition with trimethylchlorosilane (TMCS). Study of the effect of certain parameters like initial concentration, pH and ionic strength were conducted. Experimental data were fitted by the models of Langmuir, Freundlich and Dubinin-Raduskevich calculated by non-linear regression. Results obtained show that the adsorption of phenol on samples is very fast and supported at acidic values of pH. We also found that phenol uptake increases with Si/Al ratio and modification by silylation improves the percentage of adsorption by approximately 30%.
4 citations
Dissertation•
01 Mar 2019
TL;DR: In this article, a carrier system for antibiotic streptomycin was successfully synthesized from natural kaolinite using alkaline hydrothermal method with sizes ranging from 0.5 to 0.9 µm.
Abstract: The escalating problems of antibiotic resistance coupled with its growing environmental pollution as a result of rapid release of antibiotics demands the development of new and efficient antibacterial agents. To overcome this problem, antibacterial compounds are immobilized on a carrier system such as zeolite. In this study, zeolite A was successfully synthesized from natural kaolinite using alkaline hydrothermal method with sizes ranging from 0.5 to 0.9 µm. The product was used as a carrier system by loading it with three concentrations of streptomycin (50 mg/L, 100 mg/L and 200 mg/L). To characterize and validate the production of the zeolite A, the samples were characterized using X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, field emission scanning electron microscopy with energy dispersive X-ray (FESEM-EDX), transmission electron microscope (TEM) and dispersion behaviour. The XRD and FTIR results proved that zeolite A framework was maintained even after loading with streptomycin denoting its successful adsorption with minimal release. FESEM-EDX micrographs clearly indicated the presence of streptomycin particles on the cubic surface of zeolite A. In term of its dispersion behaviour, streptomycin-zeolite showed hydrophobic as compared to hydrophilic parent zeolite and thus, could attract bacterial cell wall. The antibacterial assay of the samples was conducted against Gram-negative bacteria (Escherichia coli ATCC 11229) and Gram-positive bacteria (Staphylococcus aureus ATCC 6538) through disk diffusion technique (DDT) and minimum inhibition concentration (MIC). The DDT results indicated that the streptomycin released into the media because the inhibition zone values increased proportional to the increasing amount of streptomycin adsorbed onto zeolite A. Both types of bacteria were susceptible to the modified zeolite with the lowest MIC value for Gram negative bacteria at 3.0 g/L in distilled water. In conclusion, the synthesized zeolite A from raw kaolinite is a good adsorbent for antibiotic streptomycin, generating a broad spectrum antibacterial activity.
1 citations
References
More filters
Book•
01 Jan 1983
TL;DR: Infection, sterilization, and preservation, Disinfection, Sterility, and Preservation, کتابخانه دیجیتال جندی اهواز.
Abstract: Disinfection, sterilization, and preservation , Disinfection, sterilization, and preservation , کتابخانه دیجیتال جندی شاپور اهواز
1,743 citations
"Simultaneous action of surfactant m..." refers background in this paper
...The antibacterial activity is related to chemical properties of the cationic surfactant that are capable to reduce the surface tension, form ionic aggregates, changes the conductivity and solubility of bacteria in water (Block, 2001)....
[...]
TL;DR: This review focuses on nanostructured materials that are directly involved in the separation of water from salt as opposed to mitigating issues such as fouling and can potentially enable the development of next-generation desalination systems with increased efficiency and capacity.
Abstract: Desalination of seawater and brackish water is becoming an increasingly important means to address the scarcity of fresh water resources in the world. Decreasing the energy requirements and infrastructure costs of existing desalination technologies remains a challenge. By enabling the manipulation of matter and control of transport at nanometer length scales, the emergence of nanotechnology offers new opportunities to advance water desalination technologies. This review focuses on nanostructured materials that are directly involved in the separation of water from salt as opposed to mitigating issues such as fouling. We discuss separation mechanisms and novel transport phenomena in materials including zeolites, carbon nanotubes, and graphene with potential applications to reverse osmosis, capacitive deionization, and multi-stage flash, among others. Such nanostructured materials can potentially enable the development of next-generation desalination systems with increased efficiency and capacity.
593 citations
"Simultaneous action of surfactant m..." refers background in this paper
...There are several processes to remove these contaminants from wastewater such as desalination (Humplik et al., 2011), oxidation technology (Ebrahiem, AlMaghrabi, & Mobarki, 2017), photocatalytic degradation (Li et al....
[...]
...There are several processes to remove these contaminants from wastewater such as desalination (Humplik et al., 2011), oxidation technology (Ebrahiem, AlMaghrabi, & Mobarki, 2017), photocatalytic degradation (Li et al., 2016) and adsorption (Sadegh et al., 2017)....
[...]
TL;DR: In this paper, the role of nanomaterials as effective adsorbents for wastewater purification is discussed and the challenges of cost-effective and environmentally acceptable nanOMaterials for water purification are discussed and reviewed.
Abstract: Nanomaterials have been extensively studied for heavy metal ions and dye removals from wastewater. This article reviews the role of nanomaterials as effective adsorbents for wastewater purification. In recent years, numerous novel nanomaterial adsorbents have been developed for enhancing the efficiency and adsorption capacities of removing contaminants from wastewater. The innovation, forthcoming development, and challenges of cost-effective and environmentally acceptable nanomaterials for water purification are discussed and reviewed in this article. This review concludes that nanomaterials have many unique morphological and structural properties that qualify them to be used as effective adsorbents to solve several environmental problems.
406 citations
"Simultaneous action of surfactant m..." refers background in this paper
...There are several processes to remove these contaminants from wastewater such as desalination (Humplik et al., 2011), oxidation technology (Ebrahiem, AlMaghrabi, & Mobarki, 2017), photocatalytic degradation (Li et al., 2016) and adsorption (Sadegh et al., 2017)....
[...]
TL;DR: A review of the most commonly applied surfactants in chemical enhanced oil recovery (EOR) studies and the optimum application criteria for of each type is presented in detail in this paper.
393 citations
TL;DR: Synthesized HDTMA-covered modified zeolite Y synthesized using RHA can be used to remove Cr(VI) and As(V) from water more than the corresponding commercial one due to its lower silica to alumina ratio.
297 citations