The examination of photocatalyst powders for the total removal of pollutants from aqueous solutions is a vital research subject within the realm of environmental preservation. The objective of this study is to develop a photocatalyst heterojunction consisting of Zingiber/ZnO-H for the degradation of both the reactive red dye (RR 141) and ofloxacin antibiotic in wastewater. The current investigation outlines the process of synthesising a composite material by combining Zingiber montanum extract with zinc oxide (ZnO) by a hydrothermal method.
View Article and Find Full Text PDFThe development of photocatalytic powders to remove contaminants from air solutions is an important field of research in the field of environmental conservation. CD/ZnO-H400, a heterogeneous photocatalytic production, is utilized to degrade the reactive red dye and the antibiotic ofloxacin found in wastewater. This study explains the synthesis of carbon dots (CDs) derived from coconut air and zinc oxide (ZnO) using a hydrothermal method at a temperature of 180 °C with a duration of 4 h and subsequently calcinated at a 400 °C temperature for 4 h.
View Article and Find Full Text PDFA large amount of agricultural waste was used to prepare cellulose (Cel) and then the surface was modified with PEI (Cel-PEI) using the microwave method. To be used as a metal adsorbent, the adsorption of Cr (VI) from an aqueous solution by Cel-PEI was measured using Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), X-ray diffraction (XRD), and thermogravimetric analysis (TGA) techniques. The parameters of Cr (VI) adsorption in solution by the Cel-PEI adsorbent were as follows: the pH of the solution was 3, the concentration of the chromium solution was 100 mg/L, and the adsorption time was 180 min at 30 °C using 0.
View Article and Find Full Text PDFForensic science is currently fast-growing for the development detection of the latent fingerprint. Currently, chemical dust quickly enters the body through touch or inhalation and will be affected by the user. In this research, a study on the comparison of natural powder from four species of medicinal plants () for the detection of latent fingerprints is carried out that has fewer adverse effects on the user's body by using such natural substances instead.
View Article and Find Full Text PDFIn this study, carbon quantum dots (CQDs) from Magnolia Grandiflora flower as a carbon precursor were obtained using a hydrothermal method under the optimized conditions affected by various heating times (14, 16, 18, and 20 min) and various electric power inputs (900-1400 W). Then, hydrogen sulfide (HS) was added to dope the CQDs under the same manner. The aqueous solution of the S-CQDs were characterized by FTIR, XPS, EDX/SEM, and TEM, with nanoparticle size at around 4 nm.
View Article and Find Full Text PDFThis study aims to synthesize carbon dots from a natural resource and will be used to detect a latent fingerprint on a non-porous surface. The carbon dots (CDs) were prepared by adding luminol to coconut water and ethanol via a hydrothermal method. Luminol enhances the chemiluminescence of the CDs, which show more distinct blue light under a UV lamp compared with bare CDs.
View Article and Find Full Text PDF<b>Background and Objective:</b> Nowadays, Dyes is widely used to improve fingerprints identification test. Natural dyes are another interesting way that can be used instead of chemical dyes because of its non-toxicity and lower cost. In this research, the development of rust powder from <i>Plumeria</i> tree was applied for fingerprints identification due to its fluorescence property under UV.
View Article and Find Full Text PDFTrop Life Sci Res
November 2016
Dansai District is located in Loei Province, Northeast Thailand, rich in natural resources and composes of many kinds of forests, such as evergreen forests and mixed-deciduous forests. The objectives of the study are to determine the diversity of mushrooms and investigate the values of the forest influencing the community way of life and exploration of problems and guidelines for developing the forest along with sufficiency economy theory. The study includes compilation of data from past studies, semi-structured interview with the local communities and discussion with focus group.
View Article and Find Full Text PDFSoutheast Asian J Trop Med Public Health
March 2009
The purpose of this study was to determine the rate of intestinal parasitic and malarial infections during a period of low infection among the residents of remote Karen villages in Thailand. Fifty-five males and 64 females, aged 6 months to 70 years, were examined for malaria by thick blood smears using the Giemsa staining technique. Of the 119 subjects, 4 (3.
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