Research Journal of Chemistry and Environment最新文献_第3页

Optimized yield of fermentable sugar from chemical hydrolysis of rice straw for application in ethanol fermentation 优化稻草化学水解产生的可发酵糖在乙醇发酵中的应用

Research Journal of Chemistry and Environment Pub Date : 2023-12-05 DOI: 10.25303/281rjce1070114

Vikas Chandra Gupta, Meenu Singh, Shiv Prasad, Bhartendu Nath Mishra

{"title":"Optimized yield of fermentable sugar from chemical hydrolysis of rice straw for application in ethanol fermentation","authors":"Vikas Chandra Gupta, Meenu Singh, Shiv Prasad, Bhartendu Nath Mishra","doi":"10.25303/281rjce1070114","DOIUrl":"https://doi.org/10.25303/281rjce1070114","url":null,"abstract":"Lignocellulosic biomass is a rich source of carbohydrate polymers with cellulose and hemicellulose being the two primary carbohydrates made up of glucose and xylose monomers. These monomeric sugar molecules act as precursor molecules for ethanol production by the microbial fermentation process. Rice straw is a potent lignocellulosic feedstock for ethanol production, but its utilization on an industrial scale still faces significant challenges. The main obstacle lies in the chemical pretreatment process which needs to be designed optimally to enable a smooth supply of biomass-based fermentable sugar for ethanol businesses in a sustainable and cost-effective manner. The application of response surface curve analysis was made utilizing the Minitab software-based design of experiments which have demonstrated promising results in obtaining an optimized yield of fermentable sugar from the chemical hydrolysis of rice straw. The present study aimed to increase the fermentable sugar yield from chemical pretreatment of rice straw using Minitab computer software-based design of experiments. The optimal level of pretreatment variables was determined using Minitab 17 software-based analysis of the response surface curve to achieve a maximized release of fermentable sugar at 348.20 milligrams/gram of solid pretreated biomass. This study identified the corresponding optimum operating levels for each variable as (a) biomass solid loading rate (15% w/v), (b) H2SO4 concentration (12% v/v), (c) pretreatment reaction time (30 minutes) and (d) temperature (100°C).","PeriodicalId":21012,"journal":{"name":"Research Journal of Chemistry and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138984848","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 synthesis of Zinc Oxide nanoparticles, antibacterial studies and investigation as catalyst for the conversion of pumpkin oil into biodiesel 氧化锌纳米粒子的绿色合成、抗菌研究以及作为南瓜油转化为生物柴油的催化剂的研究

Research Journal of Chemistry and Environment Pub Date : 2023-12-05 DOI: 10.25303/281rjce1210132

G. Rudreshappa, S. Sreenivasa, K. Uma, S. Manjunatha, Kumar D.B. Aruna

引用次数: 0

Catalysis in SDS and CTAB micellar media: Kinetics of base hydrolysis of Bis(2,4,6-tripyridyl-s-triazine) iron (II) SDS 和 CTAB 胶束介质中的催化作用：双(2,4,6-三吡啶-s-三嗪)铁(II)碱水解动力学

Research Journal of Chemistry and Environment Pub Date : 2023-12-05 DOI: 10.25303/281rjce80084

Kumari B Leela, P. Shyamala, K. Nagalakshmi

引用次数: 0

Comprehensive Characterization of Lignocellulosic Biomass and their effective Delignification for Sustainable Bioenergy 木质纤维素生物质的综合表征及其有效脱木素以实现可持续生物能源

Research Journal of Chemistry and Environment Pub Date : 2023-12-05 DOI: 10.25303/281rjce57067

Prasad B. Rabi, Polaki Suman, R. K. Padhi, Manoja Das

{"title":"Comprehensive Characterization of Lignocellulosic Biomass and their effective Delignification for Sustainable Bioenergy","authors":"Prasad B. Rabi, Polaki Suman, R. K. Padhi, Manoja Das","doi":"10.25303/281rjce57067","DOIUrl":"https://doi.org/10.25303/281rjce57067","url":null,"abstract":"The study provides a thorough examination of the biofuel potential of three unique lignocellulosic crop residues: rice straw (Oryza sativa), corn stalk (Zea mays) and sugarcane bagasse (Saccharum officinarum) of Odisha. In the investigation, we explored the compositional, thermal and structural characteristics of these biomass sources, shedding light on their suitability for sustainable bioenergy production. Proximate analysis indicated variances in critical factors in the range of 5.9-14.8% (moisture content), 1.8-19.4% (ash content), 60-72.4% (volatile matter) and 9.6-14.7% (fixed carbon) which contribute to the various energy generating capacities of these materials. An in-depth investigation of cellulose, hemicellulose and lignin concentration revealed the promise of sugarcane bagasse as a cellulose-rich option for bioethanol synthesis. Thermochemical profiling using thermogravimetric and FTIR analysis revealed information about thermal stability and chemical changes, with pretreatment having an important role in increasing biomass accessibility and crystallinity. The significance of pretreatment-induced crystallinity for effective enzymatic hydrolysis and fermentable sugar generation was highlighted by X-ray diffraction (XRD) . Overall, this study advances our understanding of the intricate relationships between biomass composition, structure and bioenergy potential, offering valuable insights for the development of sustainable biofuel production strategies.","PeriodicalId":21012,"journal":{"name":"Research Journal of Chemistry and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139012100","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

Water Quality and Pollution Status using Principal Component Analysis of Lake Nsezi in Richards Bay, Kwazulu-Natal, South Africa 利用主成分分析法分析南非夸祖鲁-纳塔尔省理查兹湾 Nsezi 湖的水质和污染状况

Research Journal of Chemistry and Environment Pub Date : 2023-12-05 DOI: 10.25303/281rjce01012

Lukusa Cimanga, Vsr Pullabhotla, Dellas Baloyi Ntsako, Amina Nel

{"title":"Water Quality and Pollution Status using Principal Component Analysis of Lake Nsezi in Richards Bay, Kwazulu-Natal, South Africa","authors":"Lukusa Cimanga, Vsr Pullabhotla, Dellas Baloyi Ntsako, Amina Nel","doi":"10.25303/281rjce01012","DOIUrl":"https://doi.org/10.25303/281rjce01012","url":null,"abstract":"The water quality of Lake Nsezi in Richards Bay, South Africa was investigated for the possible influence of anthropogenic activities around the lake. Lake water was sampled for a period of one year from May 2014 to May 2015. Physicochemical and bacteriological analysis were compared to regulations of WHO, USEPA and DWAF WQG for aquatic environment and domestic use. Physicochemical parameters measured were within the recommended specifications as per WHO, USEPA and DWAF guidelines for aquatic environment and domestic use at the exception of TDS, Cl and few heavy metals such as Al, Cd, Cu, Fe and Mn. The average content levels for these parameters were: 530±167 mg/L (TDS), 135±92 mg/L (Cl), 0.079±0.11 mg/L (Al), 0.171±0.66 mg/L(Cd), 0.38 ± 0.50 mg/L (Fe), 13.6±15.33 mg/L (Pb). Principal component biplots positively showed some strong and moderate metal loadings of 0.564 (Fe), 0.552 (Pb), 0.928 (Na), 0.893 (Mg), 0645 (Sr) and 0.772 (K) at a variety of sites. Bacteriological parameters content investigated were all above the WHO, USEPA and DWAF guidelines for domestic use for E. coli, heterotrophic plate counts and total coliform counts.","PeriodicalId":21012,"journal":{"name":"Research Journal of Chemistry and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138984947","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

Oxidation of benzyl alcohols by molecular oxygen catalyzed by cobalt ferrite 钴铁氧体催化分子氧氧化苄醇

Research Journal of Chemistry and Environment Pub Date : 2023-12-05 DOI: 10.25303/281rjce91097

R. Changwal, R. Ameta, S. Ameta

引用次数: 0

Photocatalytic degradation of methylene blue dye from aqueous solution using TiO2 doped Activated carbon 使用掺杂二氧化钛的活性炭光催化降解水溶液中的亚甲基蓝染料

Research Journal of Chemistry and Environment Pub Date : 2023-12-05 DOI: 10.25303/281rjce38042

N. Saravanan

引用次数: 0

Biogenic Synthesis of Gold Nanoparticles using Bark Extract of Bauhinia variegata: Antibacterial and in vitro Anticancer study 利用洋紫荆树皮提取物的生物合成金纳米粒子：抗菌和体外抗癌研究

Research Journal of Chemistry and Environment Pub Date : 2023-12-05 DOI: 10.25303/281rjce48056

Hiral V. Vaghela, K. Parmar, Jyotindra B Mahyavanshi

引用次数: 0

The Functional and Biodegradation Characteristics of High-Density Poly-ethylene, Poly-caprolactone and Poly-ethylene Maleic Anhydride Composites 高密度聚乙烯、聚己内酯和聚乙烯马来酸酐复合材料的功能和生物降解特性

Research Journal of Chemistry and Environment Pub Date : 2023-12-05 DOI: 10.25303/281rjce1150120

Ali Salah F. Abdellah, Tamam M.S. Aljabori, E. El- Rafey

{"title":"The Functional and Biodegradation Characteristics of High-Density Poly-ethylene, Poly-caprolactone and Poly-ethylene Maleic Anhydride Composites","authors":"Ali Salah F. Abdellah, Tamam M.S. Aljabori, E. El- Rafey","doi":"10.25303/281rjce1150120","DOIUrl":"https://doi.org/10.25303/281rjce1150120","url":null,"abstract":"The goal of this research is to develop environmental friendly polymer composites in order to reduce the use of current polymers and promote global security. High density poly-ethylene (HDPE) and poly-caprolactone (PCL) composites were mixed with varying amounts of poly-ethylene joined maleic anhydride (PE-g-MA) as a strong compatibilizer. The different composites were prepared using the conventional infusion shaping approach. Mechanical properties were accounted for to have good increase for the diverse compositions and the strength and pliable strain% (stretching) rate at break were improved in comparison to unadulterated HDPE. Examining electron magnifying lens (SEM) morphology revealed that the expansion of PE-g-MA increased the compability and so aided in the achievement of a synergistic mix of superior qualities. The manure internment test yielded favorable bio-corruption results and demonstrated the fertilizer's ability to enable bio-debasement of various composites, allowing their utilization as key polymers in the assembly of single-use products and also protecting nature and acting as a decent waste administration of HDPE polymer.","PeriodicalId":21012,"journal":{"name":"Research Journal of Chemistry and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138985202","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

Geometric Morphometric Study of Wing Shape in Leva indica (Acrididae: Gomphocerinae) from Different Environmental Sites of Coimbatore, India 印度哥印拜陀不同环境地点鳉鱼（鳞鳉科：鳞鳉属）翼形的几何形态计量学研究

Research Journal of Chemistry and Environment Pub Date : 2023-12-05 DOI: 10.25303/281rjce1330141

M. Suganya, K. Manimegalai

{"title":"Geometric Morphometric Study of Wing Shape in Leva indica (Acrididae: Gomphocerinae) from Different Environmental Sites of Coimbatore, India","authors":"M. Suganya, K. Manimegalai","doi":"10.25303/281rjce1330141","DOIUrl":"https://doi.org/10.25303/281rjce1330141","url":null,"abstract":"A landmark based geometric morphometric study was carried out to describe the variation in wing of male and female Leva indica from different environmental sites of Coimbatore, Tamil Nadu, India. A total of 60 male and 60 female forewings were used in this study. To demonstrate the variation in wing shape, landmark data of each individual was examined through the morphometric softwares namely tps-Util, tps-Dig, tps-Relw, tps-Small and integrated software PAST. In total, 19 landmarks were identified in both male and female wings of L. indica. Based on the landmark coordinates, the first two relative warp analysis showed significant variation within and between the male and female wing shape from different sites. Procrustes vs. tangent space distance showed that the distances were similar within males and females but significant differences appeared between the male and female wings of L. indica. Principal Component Analysis (PCA) between the male and female wings scatter plots also showed clear distinction from the result. The obtained results indicate that each sex of L. indica from different regions displays morphological differences in wing shape. These morphological changes could have occurred as a result of phenotypic plasticity.","PeriodicalId":21012,"journal":{"name":"Research Journal of Chemistry and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138985304","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