scholarly journals Synthesis and photocatalytic activities of a CuO/TiO2 composite catalyst using aquatic plants with accumulated copper as a template

RSC Advances ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 2018-2025 ◽  
Author(s):  
Dongfang Lu ◽  
Osman Ahmed Zelekew ◽  
Angaw Kelemework Abay ◽  
Qitang Huang ◽  
Xiaoyun Chen ◽  
...  
Keyword(s):  
Aquatic Plants ◽  
Eichhornia Crassipes ◽  
Composite Catalyst ◽  
Titanium Chloride ◽  
Hydrolysis Method ◽  
Photocatalytic Activities

A CuO/TiO2 photocatalyst was synthesized by using a hydrolysis method. In the synthesis, the Eichhornia crassipes accumulated with copper was used and combined with titanium chloride precursor.

scholarly journals Inventarisasi Dan Identifikasi Tumbuhan Air di Danau Hanjalutung Kota Palangka Raya

2020 ◽  
Vol 6 (2) ◽  
pp. 149-159
Author(s):  
Ummi Suraya
Keyword(s):  
Aquatic Plants ◽  
Water Hyacinth ◽  
Eichhornia Crassipes ◽  
Pistia Stratiotes ◽  
Salvinia Molesta ◽  
Leersia Hexandra ◽  
Water Plants

The aim of this research is to identify and to inventory water plants in Hanjalutung Lake,Petuk Ketimpun Village, Jekan Raya District, Palangka Raya City. This research was conducted from December 2017 to January 2018. Sampling was carried out in 3 (three) stations, namely inlet ,middle and outlet. The tool used for aquatic plants 2 x 2 m transect.The results of research aquatic plants found in the waters of Lake Hanjalutung 7 (seven) types namely Kiambang (Salvinia molesta), gerigit/bite (Leersia hexandra), Cat Tail Grass (Utricularia aurea), Para Grass (Cyperus platystylis), Water Hyacinth ( Eichhornia crassipes ), Kiapu (Pistia stratiotes) dan Ketanan (Polygonum sp).

Ultrasonic-Microwave Synergistic Synthesis of RGO–Bi2WO6 Photocatalyst with High Photoactivity for Basic Nitrogen Compounds in Light Oil

NANO ◽  
2016 ◽  
Vol 11 (05) ◽  
pp. 1650052 ◽  
Author(s):  
Ying Chen ◽  
Shenglun Ji ◽  
Tengfei Qiao ◽  
Shuang Miao ◽  
Yu Zhao
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Composite Catalyst ◽  
Photogenerated Carrier ◽  
X Ray Diffraction ◽  
Composite Photocatalyst ◽  
Photocatalytic Activities ◽  
Light Oil ◽  
Ft Ir

Graphene–Bi2WO6 composite photocatalyst with excellent photocatalytic properties were synthetized by ultrasonic-microwave synergistic method. The obtained samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier infrared (FT-IR) spectrum, specific surface area analyzer (BET) and UV-Vis diffuse reflectance spectra. The photocatalytic activities of as-prepared samples were evaluated by degradation of pyridine in light oil under visible light irradiation. The results show that graphene changed appearance structure of Bi2WO6, which prevented the Bi2WO6 nanosheets reunion arrangement, and increased specific surface area of the catalyst. It can also reduce the recombination probability of photogenerated carrier, so as to improve the photocatalytic activity of the composite catalyst. The optimal amount of graphene is 2%, with the denitrification rate as high as 89.28%, much higher than that of pure Bi2WO6.

Synergistic phytoremediation of wastewater by two aquatic plants (Typha angustifolia and Eichhornia crassipes) and potential as biomass fuel

2017 ◽  
Vol 25 (6) ◽  
pp. 5344-5358 ◽  
Author(s):  
Theeta Sricoth ◽  
Weeradej Meeinkuirt ◽  
John Pichtel ◽  
Puntaree Taeprayoon ◽  
Patompong Saengwilai
Keyword(s):  
Aquatic Plants ◽  
Eichhornia Crassipes ◽  
Biomass Fuel ◽  
Typha Angustifolia

scholarly journals Use of Aquatic Plants in Mine Wastewater Purification

2019 ◽  
pp. 1-7
Author(s):  
Kh. S. Turdaliyeva ◽  
S. A. Huzhzhiev ◽  
K. S. Safarov
Keyword(s):  
Aquatic Plants ◽  
Eichhornia Crassipes ◽  
Chemical Elements ◽  
Mine Waters ◽  
Study Results ◽  
Elemental Analyses ◽  
Before And After ◽  
Mine Wastewater ◽  
Organ Specific

A comparative study of the role of some aquatic plants in the biological treatment of wastewater from the “Koch-Bulak” mine of the Angren mining department were carried out. The experiments were taken in laboratory conditions in aquariums. Hydrochemical and elemental analyses of wastewater from the Koch-Bulak mine of the Angren mining department were carried out  before and after the cultivation of Carolina azolla, Pistis teloreous and Eichhornia crassipes. Features of the growth and development of the studied plants in the mine wastewater are identified. The smallest increase in biomass in the laboratory showed Carolina azolla, the largest - Pistis teloreous. Elemental composition of the studied plants was carried out by the neutron activation analysis. Specific and organ-specific differences in the accumulation of chemical elements in the biomass of aquatic macrophytes are revealed as well. The study results revealed possibilities of use of the aquatic plants: Carolina azolla, Pistis teloreous and Eichhornia crassipes for the purpose of mine waters’ purification with high effectiveness.

scholarly journals Aquatic plant community in porto primavera reservoir

2014 ◽  
Vol 32 (3) ◽  
pp. 467-473 ◽  
Author(s):  
R.L.C.M. Pitelli ◽  
R.A. Pitelli ◽  
C.J. Rodrigues ◽  
J.H.P. Dias
Keyword(s):  
Cluster Analysis ◽  
Aquatic Plants ◽  
Water Body ◽  
Eichhornia Crassipes ◽  
Aquatic Plant ◽  
Hydrilla Verticillata ◽  
The Other ◽  
Frequency Of Occurrence ◽  
Eichhornia Azurea ◽  
Large Populations

Aiming to identify the populations of aquatic plants present in the Porto Primavera reservoir and evaluate the behavior of Hydrilla verticillata colonization of this water body a survey was carried out in 2007. The data was based on presence or absence, only were assessed the presence or absence of the species and the data were subjected to cluster analysis to establish differences in distribution and occurrence of populations. The community of aquatic plants showed 24 species distributed in 16 botanical families. Cyperaceae and Pontederiaceae were the most representative in terms of species richness. The submerged macrophyte Hydrilla verticillata showed the highest frequency of occurrence in the water body, showing a different behavior from the other populations of the water body. Species like Eichhornia crassipes, Eichhornia azurea, Typha dominguensis and Oxycaryum cubense also showed different behavior in relation to other populations within the community, forming large populations in lagoons and backwater areas.

Distribution of unusual polyamines in aquatic plants and gramineous seeds

1994 ◽  
Vol 72 (8) ◽  
pp. 1114-1120 ◽  
Author(s):  
Koei Hamana ◽  
Shigeru Matsuzaki ◽  
Masaru Niitsu ◽  
Keijiro Samejima
Keyword(s):  
Key Words ◽  
Aquatic Plants ◽  
Water Hyacinth ◽  
Eichhornia Crassipes ◽  
Aquatic Plant ◽  
Nelumbo Nucifera ◽  
Water Lily ◽  
Spirodela Polyrhiza ◽  
A Minor ◽  
Seedling Leaf

We tested several plants for the occurrence of unusual polyamines such as homospermidine, aminopropylhomospermidine, norspermidine, norspermine, thermospermine, and caldopentamine. The leaf and root of aquatic plants ubiquitously contained homospermidine in addition to usual polyamines such as putrescine, spermidine, spermine, and cadaverine. Homospermidine was widely distributed in the seed, seedling, leaf, and root of gramineous plants such as rice, millet, oat, rye, wheat, barley, corn, sorghum, and timothy as a minor polyamine. Aminopropylhomospermidine was found in the two aquatic plants, the water lily Nymphaca tetragona and the lotus Nelumbo nucifera as a major polyamine, and in the gramineous seeds as a minor polyamine. Norspermidine, norspermine, homospermine, and caldopentamine were detected in two floating aquatic plants, the duckweed Spirodela polyrhiza and the water hyacinth Eichhornia crassipes. Thermospermine was sporadically detected in some aquatic plants and gramineous seeds. Key words: Gramineae, aquatic plant, polyamine, homospermidine, caldopentamine.

Arsenic removal from waters by bioremediation with the aquatic plants Water Hyacinth (Eichhornia crassipes) and Lesser Duckweed (Lemna minor)

2008 ◽  
Vol 99 (17) ◽  
pp. 8436-8440 ◽  
Author(s):  
Sandra Alvarado ◽  
Magdiel Guédez ◽  
Marcó P. Lué-Merú ◽  
Graterol Nelson ◽  
Anzalone Alvaro ◽  
...  
Keyword(s):  
Aquatic Plants ◽  
Water Hyacinth ◽  
Eichhornia Crassipes ◽  
Arsenic Removal ◽  
Lemna Minor

scholarly journals Adsorptive Removal of Cd(II) Ions from Wastewater Using Maleic Anhydride Nanocellulose

2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Hizkeal Tsade Kara ◽  
Sisay Tadesse Anshebo ◽  
Fedlu Kedir Sabir
Keyword(s):  
Maleic Anhydride ◽  
Eichhornia Crassipes ◽  
X Ray Diffraction ◽  
Uptake Mechanism ◽  
X Ray ◽  
Hydrolysis Method ◽  
Adsorbent Regeneration ◽  
Pseudo Second Order ◽  
Uptake Process ◽  
Regeneration Study

In this study, both pristine cellulose nanocrystalline (CNC) and maleic anhydride functionalized cellulose nanocrystalline (MA-CNC) were prepared from the stems of Eichhornia crassipes weed by the sulfuric acid hydrolysis method. The as-prepared adsorbents were characterized by using X-ray diffraction (XRD), Fourier-transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), energy-dispersive X-ray (EDX), and Brunauer–Emmett–Teller (BET) instruments. These materials were applied for the removal of Cd(II) ions from WW. The uptake mechanism was fixed to both Langmuir and Freundlich adsorption isotherms with a maximum Cd(II) ion uptake capability (qmax) of 75.76 and 215.52 mg g−1 by CNC and MA-CNC adsorbents, respectively. Pseudo-second-order (PSO) kinetic model was well fitted to the uptake process. The adsorbent regeneration study was done after desorption of Cd(II) ions from the adsorbent by HCl washing. Results exhibited that the adsorbent was reused for the removal of Cd(II) ions from real WW after successive 13th cycle.

scholarly journals Preparation of TiO2 Nanoparticle/Nanotube Composites via a Vapor Hydrolysis Method and Their Photocatalytic Activities

2011 ◽  
Vol 2011 ◽  
pp. 1-7 ◽  
Author(s):  
Weiwei Yu ◽  
Sujun Yuan ◽  
Yaogang Li ◽  
Qinghong Zhang ◽  
Hongzhi Wang
Keyword(s):  
Phenol Degradation ◽  
Degradation Efficiency ◽  
X Ray Diffraction ◽  
Isothermal Adsorption ◽  
Phenol Solution ◽  
Hydrolysis Method ◽  
Transmission Electron ◽  
Photocatalytic Activities ◽  
Nanotube Composites ◽  
Adsorption Desorption

TiO2 nanoparticle/nanotube composites were prepared by a vapor hydrolysis method and were characterized by X-ray diffraction, transmission electron microscopy, and N2 isothermal adsorption-desorption. The well-crystallized TiO2 nanoparticles were uniformly deposited onto the surface of TiO2 nanotubes. The photocatalytic activity of the composites was evaluated by the degradation of acid red G and phenol solution under UV irradiation. The results showed that the photocatalytic activities of the modified composites were significantly enhanced compared to the pristine nanotubes. In particular, the 50 wt% TiO2 nanoparticle/nanotube composite obtained at 120°C exhibited a remarkable ARG degradation efficiency of 90% after irradiation for 30 minutes and a phenol degradation efficiency of 93% after irradiation for 2 hours.

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