( Vol 29 , Issue 10 )
10 Oct 2025
( Vol 29 , Issue 10 )
31 Oct 2025
Research Journal of Chemistry and Environment (ISSN:0972-0626) is a monthly peer-reviewed scopus-indexed journal from 2007 to Present. The publisher of this journal is the Journal of International Congress of Chemistry and Environment. RJCE is committed to gathering and disseminating excellent research achievements. The journal welcomes all kind of research/review/abstract papers regarding Engineering subjects including Earth and Planetary Sciences, Environmental Science, Chemical Engineering, Agricultural and Biological Sciences, Renewable Energy, Biochemistry.
The purpose of this study was to explore the impact of two different extraction times (15 min and 30 min) on the extraction yield of phytochemicals and antioxidant activity of various Benjakasorn formula mixed with Chamomile, Goji berry and Stevia. Decoction extracts were tested for TPC, TFC, DPPH radical scavenging, and FRAP antioxidant power. Performance of multi-herb preparations was prominent, the highest yield (26%), TPC (145 mg GAE/g), TFC (200 mg QE/g), and FRAP (145 mg TEAC/g) were reached at 30 min for BJKCMLBSR indicating synergistic effect. Single herbs were somewhat inconsistent in
Read MoreSulfadiazine (SDZ) is a pharmaceutical pollutant frequently detected in water, posing significant health and environmental risks. To address this issue, the current research explore the use of a novel adsorbent, date seed-based activated carbon (DSAC), for the effective removal of SDZ. DSAC was optimized using response surface methodology (RSM) under preparation conditions of 2.30 minutes activation time, 490 W radiation power, and an impregnation ratio (IR) of 1.60 g/g, achieving a estimated SDZ removal of 94.30% (experimental: 90.70%; error: 3.90%) with a DSAC yield of 26.22% (experimental:
Read MoreBoth lead (Pb²⁺) and hexavalent chromium (Cr(VI)) are highly toxic pollutants which need to have strategies for their removal. In this work, graphene oxide (GO) and thiourea-functionalized graphene oxide (TU-GO) were prepared and characterized by means of scanning electron microscopy (SEM), FTIR, Raman, UV-Vis, and BET analyses. Compared to GO, TU-GO showed higher surface area and enriched N/S functional groups. For adsorption experiments, an equilibrium was rapidly reached for Pb²⁺ and was slower for Cr(VI) uptake. Isotherm analysis revealed Pb²⁺ adsorption was Langmuir type monolaye
Read MoreThis study aimed to optimize the extraction of total polyphenols and antioxidant compounds from the bark of Ficus thonningii, a medicinal tree widely used in West African ethnopharmacology. Two extraction methods—maceration (MAC) and ultrasound-assisted extraction (UAE)—were compared at three solid-to-liquid ratios (S/L: 1/120, 1/80, and 1/60 g/mL) using an acetone/water solvent system (60:40, v/v). Both processes were carried out at 40 °C for 35 minutes, with kinetic sampling every 5 minutes. Total phenolic content was determined using the Folin–Ciocalteu method, while antioxidant acti
Read MoreThis study explores the bio-insecticidal potential of Zingiber officinale (ginger) leaf and rhizome extracts against stem borer larvae (Spodoptera spp.), a destructive pest that significantly impacts maize production. The widespread use of synthetic pesticides to control these pests has raised serious concerns about environmental safety, human health, and pest resistance. Consequently, there is an increasing demand for effective, plant-based alternatives that are both eco-friendly and sustainable. In this study, ginger extracts were prepared using Soxhlet and boiling extraction methods at vari
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