Universal Journal of Green Chemistry最新文献

Optimization of Batch Adsorption Study Parameters of Acid Dyes onto Spent Brewery Grains 废酿酒谷物对酸性染料的批量吸附研究参数优化

Universal Journal of Green Chemistry Pub Date : 2024-07-22 DOI: 10.37256/ujgc.2220244204

Rukkesh J, G. P

{"title":"Optimization of Batch Adsorption Study Parameters of Acid Dyes onto Spent Brewery Grains","authors":"Rukkesh J, G. P","doi":"10.37256/ujgc.2220244204","DOIUrl":"https://doi.org/10.37256/ujgc.2220244204","url":null,"abstract":"The exploration of economical and nature friendly adsorbents for dye elimination from effluent is a promising area of research, driven by the need for sustainable and economically viable solutions. This work deals with the adsorption features of Acid Blue 25 (AB25) and Acid Green 25 (AG25) dyes from aqueous solutions using spent brewery grains (SBG). After brewing process, the obtained residue consists of spent grains. Optimum conditions for AB25 & AG25 removal were found to be at pH 2, adsorbent dosage as 0.8 and 1 g/L of solution respectively and equilibrium time was found to be 60 mins. In order to adjudicate the adsorption process, analysis was carried out with kinetic and isothermal two parameter and three parameter models. The results were discovered to fit most with the pseudo-second-order (R2 = 0.990) for the kinetics and the Langmuir isotherm (R2 = 0.993) for the adsorption isotherms. The isotherms and kinetics verified that SBG had a high value of adsorption capacity. Experiment results pointed out SBG is one of the best adsorbent that eco-friendly, economical, readily accessible, and efficient on the removal of AB25 and AG25 dyes from aqueous solution.","PeriodicalId":150757,"journal":{"name":"Universal Journal of Green Chemistry","volume":"24 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141814628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Removal of Phosphate and Ammonium Ion from Domestic Wastewater Using Clay Feldspar in Wupa Sewage Treatment Plant Abuja 在阿布贾 Wupa 污水处理厂使用粘土长石去除生活污水中的磷酸盐和铵离子

Universal Journal of Green Chemistry Pub Date : 2024-07-22 DOI: 10.37256/ujgc.2220244949

G. Shiru, Manase Auta, Sarafadeen Ajibola Mustapha

{"title":"Removal of Phosphate and Ammonium Ion from Domestic Wastewater Using Clay Feldspar in Wupa Sewage Treatment Plant Abuja","authors":"G. Shiru, Manase Auta, Sarafadeen Ajibola Mustapha","doi":"10.37256/ujgc.2220244949","DOIUrl":"https://doi.org/10.37256/ujgc.2220244949","url":null,"abstract":"The aim of this study is centered on the sustainability of feldspar as an adsorbent as opposed to other clay minerals such as plastic clay, red clay and barite. Brauner-Emmert-Teller (BET) analysis of the clay minerals considered in this study revealed that raw feldspar had the highest surface area and pore volume of 332.8 m²/g and 0.218 cc/g respectively. Similarly, the clay minerals were used in adsorption study with feldspar producing the best removal efficiency of 90.00%and 73.96% for ammonium and phosphate ions respectively. The BET results and the adsorption test showed that feldspar was a better adsorbent than the other adsorbents. Thermal activation of feldspar was carried out at temperatures of 500–700 ◦C using muffle furnace. The BET results of the thermal activation revealed that feldspar activated at 600 ◦C has the highest surface area and pore volume of 533.9 m²/g and 0.272 cc/g respectively. The Fourier’s transformed infrared (FT-IR) results indicated that several functional groups were involved in the adsorption process of the phosphate and ammonium ions some of which were O-H, N-H and C-O groups. The results showed that irregular-layered structures of the raw feldspar became smooth and regular after thermal activation. The effects of pH, adsorbent dosage, temperature, contact time and initial PO₄3− and NH₄⁺ concentrations on the adsorption of phosphate ions and ammonium ions were investigated using atomic adsorption spectroscopy (ASS). The adsorption studies of phosphate ion and ammonium ion onto feldspar increased with contact time, adsorbent dosage and temperatures until optimum values were reached.","PeriodicalId":150757,"journal":{"name":"Universal Journal of Green Chemistry","volume":"40 14","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141814903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Two Principles for Colorimetric Detections of Cr6+ Using Polyurethane Foam—Gold Nanoparticles Composite 利用聚氨酯泡沫-金纳米颗粒复合材料比色检测 Cr6+ 的两种原理

Universal Journal of Green Chemistry Pub Date : 2024-07-19 DOI: 10.37256/ujgc.2220244938

Piyanat Issarangkura Na Ayutthaya, Monnapat Vongboot

{"title":"Two Principles for Colorimetric Detections of Cr6+ Using Polyurethane Foam—Gold Nanoparticles Composite","authors":"Piyanat Issarangkura Na Ayutthaya, Monnapat Vongboot","doi":"10.37256/ujgc.2220244938","DOIUrl":"https://doi.org/10.37256/ujgc.2220244938","url":null,"abstract":"Two principles of leaching and precipitating for colorimetric sensing of hexavalent chromium using a composite of polyurethane foam with gold nanoparticles (PUF-AuNPs) with a smartphone and image processing were reported. The PUF-AuNP composites were exposed to different concentrations of hydrobromic acid (HBr) before taking a one-shot image and processing it to obtain a color value with ImageJ for a sample with triplicate results. In 0.05 M HBr, the leaching of AuNPs by oxidation would provide a linear calibration with yellow value = 0.021[Cr6+, mM] + 0.078 (R2 = 0.998) for 0.5–5 mM with a limit of quantitation (LOQ) of 0.3 mM. In 1 M HBr, the amount of precipitate of Cr3+-bromide was proportional to the concentration of Cr6+ with a linear range of 2–20 mM and a green value = −2.5[Cr6+, mM] + 210 (R2 = 0.981) with a limit of detection (LOD) of 0.6 mM. The precision was lower than 4% RSD with a good accuracy by % relative error. Various techniques, such as FT-IR, SEM, TEM, and EDS, confirmed the presented principles, and PUF-AuNPs. The PUF was readily synthesized in a lab using simple apparatuses like plastic cups and stirrer rods. AuNPs sorbed on PUF were obtained from the reduction of hydrogen tetrachloroaurate (III), which would be obtained from a low-cost gold leaf. Preliminarily, two proposed colorimetric sensors were tested for Cr6+ assay in known aqueous samples with calculations in a calibration graph and the naked eye.","PeriodicalId":150757,"journal":{"name":"Universal Journal of Green Chemistry","volume":"114 16","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141822032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Systematic Multivariate Analysis for Optimizing Active and Selective AuPd-Based-Nanocatalyts towards Benzyl Alcohol Oxidation 通过系统多元分析优化金钯基纳米触媒对苯甲醇氧化的活性和选择性

Universal Journal of Green Chemistry Pub Date : 2024-07-19 DOI: 10.37256/ujgc.2220244619

Miguel R. I. Guerra, M. L. Gothe, Adolfo L. Figueredo, Marcos V. Petri, N. Maluf, Anderson G. M. da Silva, P. Vidinha, M. A. Garcia

{"title":"Systematic Multivariate Analysis for Optimizing Active and Selective AuPd-Based-Nanocatalyts towards Benzyl Alcohol Oxidation","authors":"Miguel R. I. Guerra, M. L. Gothe, Adolfo L. Figueredo, Marcos V. Petri, N. Maluf, Anderson G. M. da Silva, P. Vidinha, M. A. Garcia","doi":"10.37256/ujgc.2220244619","DOIUrl":"https://doi.org/10.37256/ujgc.2220244619","url":null,"abstract":"Supported bimetallic gold-palladium (AuPd) nanomaterials have been extensively studied as highly active and selective nanocatalysts for oxidation reactions. For long-term viability, optimizing synthesis and reaction parameters is essential for utilizing noble-based materials once they are expensive to produce on a large scale. For that reason, using a performance-focused strategy like a multivariate experimental design is an optimal solution for simultaneously investigating the effects of different parameters and implementing such materials in business activities. Therefore, herein, we report a systematic multivariate optimization of model AuPd/SiO2 nanocatalysts for selective benzyl alcohol oxidation in solvent-free sustainable conditions, which allows for the evaluation of the impact of the material synthesis and reaction conditions on the process and optimization of reaction and calcination temperatures. Our multivariate analysis shows that the calcination temperature has considerably impacted the structural properties of gold nanoparticles; still, these changes did not produce a pronounced effect on the material’s catalytic properties. On the other hand, the physical variables of reaction time and temperature had a more significant influence on both conversion and selectivity. An 18% conversion of benzyl alcohol with a benzaldehyde selectivity of 93% was achieved under a 562 ◦C catalyst calcination temperature, 100 ◦C reaction temperature, and 4 h of reaction time.","PeriodicalId":150757,"journal":{"name":"Universal Journal of Green Chemistry","volume":"113 13","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141821297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Green oxidation of menthol in multigram scale based on calcium hypochlorite 基于次氯酸钙的多克级薄荷醇绿色氧化技术

Universal Journal of Green Chemistry Pub Date : 2024-05-20 DOI: 10.37256/ujgc.2120243141

Mariana Falcão Lopes Princisval Carlos, Marcus Vinicius Nora de Souza

引用次数: 0

Removal of Heavy Metal Ions(Fe2+, Mn2+, Cu2+ and Zn2+) on to Activated Carbon Prepared from Kashmiri Walnut Shell (Juglans regia) 克什米尔核桃壳制备的活性炭对重金属离子（Fe2+、Mn2+、Cu2+ 和 Zn2+）的去除作用

Universal Journal of Green Chemistry Pub Date : 2024-05-17 DOI: 10.37256/ujgc.2120244806

Suhail Abdullah Malik, Sharief-ud-din Khan, B. Dar

{"title":"Removal of Heavy Metal Ions(Fe2+, Mn2+, Cu2+ and Zn2+) on to Activated Carbon Prepared from Kashmiri Walnut Shell (Juglans regia)","authors":"Suhail Abdullah Malik, Sharief-ud-din Khan, B. Dar","doi":"10.37256/ujgc.2120244806","DOIUrl":"https://doi.org/10.37256/ujgc.2120244806","url":null,"abstract":"Heavy metal pollution poses significant threats to the environment and human health, even at trace concentrations. In this study, activated carbon derived from Kashmiri walnut shell (Juglans regia) was investigated for its potential to adsorb heavy metal ions (Fe2+, Mn2+, Cu2+, and Zn2+). Standard solutions containing heavy metal ions at concentrations ranging from 10 to 50 ppm were prepared for adsorption experiments, i.e., at temperature 25 °C, and adsorbent dosage 1 g using a column mechanism. The activated carbon was first treated with 0.1M HCl and 0.5M ammonia solutions, and then washed with demineralised water. Subsequently, the metal ion solutions were passed through the column individually, and the filtrates were analyzed for heavy metal ion presence. The experimental results demonstrated that walnut shell-derived activated carbon exhibited promising adsorption capacity spanning from 0.36 mg/g for Zn2+, 0.5 mg/g for both Mn2+ and Cu2+ and 0.54 mg/g for Fe2+ thus showing the adsorption trend as Fe2+ > Mn2+ = Cu2+ > Zn2+. This study highlights the potential of using walnut shell-derived activated carbon as an effective and cost-efficient method for mitigating heavy metal pollution in contaminated water sources.","PeriodicalId":150757,"journal":{"name":"Universal Journal of Green Chemistry","volume":" 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141127179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Recent Trends on Green Synthesis and Bioactivity of Imidazole 咪唑的绿色合成与生物活性的最新发展趋势

Universal Journal of Green Chemistry Pub Date : 2024-05-13 DOI: 10.37256/ujgc.2120244234

Irum Jamil, Faisal Nawaz, Maryam Shafiq, Muqdssa Rashid, Areeba Akram, Aleeza Siddique, Shanza Taimur, Tehreem Zahra

{"title":"A Recent Trends on Green Synthesis and Bioactivity of Imidazole","authors":"Irum Jamil, Faisal Nawaz, Maryam Shafiq, Muqdssa Rashid, Areeba Akram, Aleeza Siddique, Shanza Taimur, Tehreem Zahra","doi":"10.37256/ujgc.2120244234","DOIUrl":"https://doi.org/10.37256/ujgc.2120244234","url":null,"abstract":"Imidazole is a five-membered, planar heterocyclic ring made up of 3C, 2N, and N in the 1st and 3rd places. Purine, histamine, histidine, and nucleic acid are only a few significant natural compounds that contain the imidazole ring. It is utilised as a cure to optimize the solubility and bioavailability properties of proposed weakly soluble lead compounds since it is an aromatic chemical that is polar and ionizable and so improves the pharmacokinetic features of lead molecules. Derivatives of imidazole have a special place in medicinal chemistry. An essential synthesis technique in the process of discovering new drugs is the integration of the imidazole nucleus. Due to the remarkable therapeutic efficacy of medications related to imidazole, medicinal chemists have been inspired to create numerous innovative chemotherapy agents. This review summarized the work that has been done in recent years about different synthetic approaches of imidazole derivatives and their potential activity as anti-HIV, anticancer, anticovid, antifungal, antidiabetic, antidepressant, antioxidant, and antituberculosis.","PeriodicalId":150757,"journal":{"name":"Universal Journal of Green Chemistry","volume":"122 26","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140985451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On the Establishment of a New Journal on the Topic “Catalysis and Green Chemistry” 关于创办以 "催化与绿色化学 "为主题的新期刊

Universal Journal of Green Chemistry Pub Date : 2023-07-24 DOI: 10.37256/ujgc.1220232231

G. Keglevich

引用次数: 0

Mechanochemical Organic Synthesis - Powerful Tool in Greener Chemistry 机械化学有机合成-绿色化学的有力工具

Universal Journal of Green Chemistry Pub Date : 2023-05-15 DOI: 10.37256/ujgc.1120232176

D. Margetić

引用次数: 0

A Comprehensive Review of Nanoparticles Induced Stress and Toxicity in Plants 纳米颗粒诱导植物胁迫和毒性研究综述

Universal Journal of Green Chemistry Pub Date : 2023-05-11 DOI: 10.37256/ujgc.1120231946

Shamshad Ahmad, A. K. Pathak, Rose P. Minj, Shalini Chaudhary, Ashis Kumar, Tania Chalotra, Neelu Raina

引用次数: 0