Archives of Organic and Inorganic Chemical Sciences最新文献_第2页

Production of Silica from Agricultural Waste 从农业废弃物中生产二氧化硅

Archives of Organic and Inorganic Chemical Sciences Pub Date : 2018-07-13 DOI: 10.32474/AOICS.2018.03.000160

Norzahir Sapawe, Muhammad Farhan Hanafi

{"title":"Production of Silica from Agricultural Waste","authors":"Norzahir Sapawe, Muhammad Farhan Hanafi","doi":"10.32474/AOICS.2018.03.000160","DOIUrl":"https://doi.org/10.32474/AOICS.2018.03.000160","url":null,"abstract":"The most common generated waste synthesized is rice husk and palm ash, which shown high silica contain as 90-98% and 45- 50%, in respectively [1,2]. Silica produced from these wastes were synthesized mainly using acid leaching treatment. In this study, we focused on the synthesized of other sources silica through sol-gel method. The source such as sugarcane bagasse, corn cob, bamboo stem, and bamboo leaf, till now is still not widely explored, hence become the basis to study the amount of silica that been extracted. Within the scope of study, it shown that several factors play a vital role in determining the silica content of the material, including the species of source material, soil content of source material, maturation etc. Sol-gel synthesis is one of the most common method of converting ash into silica gel. In this process, silica was synthesized from ash through simultaneous hydrolysis and condensation reaction where a sol of sodium silicate, silicon alkoxide or halide gels converted into a polymeric network of gel [3]. The synthesis of silica using this method, lead to silica precipitation under certain conditions like restriction of gel growth that involved coagulation and precipitation step during its preparation [4]. Silica gel synthesize through this method also known as xerogel. The purification and drying produce silica in amorphous powder form that remove any impurities or organic matter that usually contain in waste [1].","PeriodicalId":397513,"journal":{"name":"Archives of Organic and Inorganic Chemical Sciences","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131167200","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: 12

Mercury Toxicity: Ecological Features of Organic Phase of Mercury in Biota- Part I 汞毒性:生物群中汞有机相的生态学特征-第一部分

Archives of Organic and Inorganic Chemical Sciences Pub Date : 2018-06-11 DOI: 10.32474/AOICS.2018.03.000157

Loai Aljerf, Nuha AlMasri

{"title":"Mercury Toxicity: Ecological Features of Organic Phase of Mercury in Biota- Part I","authors":"Loai Aljerf, Nuha AlMasri","doi":"10.32474/AOICS.2018.03.000157","DOIUrl":"https://doi.org/10.32474/AOICS.2018.03.000157","url":null,"abstract":"Mercury is extensively used in industry with top usage in electrolytic chlorine. As a result of this elemental consumption in industry, different forms of inorganic and organic mercury get into the environment in great piles every day and many of these mercurial derivatives are converted to methylmercury by microorganisms. The study is assigned to inspect the ecological features of organic mercury species in biological and marine environments. In addition, the paper takes into account the uptake and the distribution of mercury in fish to investigate the conversion and mobilization of mercury from sediment deposits into the general environment. It has been confirmed that the biological half-life of methylmercury in human is about 70 days. In methodology, molecular identification of mercury has been defined. Monomethyl mercury in sediments was analyzed by gas chromatography (GC) hyphenated with electron capture detector (ECD) and the confirmation was measured by mass spectroscopy (MS). The conversion of mercury element to its organic species has been illustrated. In soil, it was found that lower pH favors monomethyl mercury and the higher pH, dimethylmercury formation, respectively. Dimethylmercury is the biological poisoning product and methylmercury is an artifact of isolation procedure. In next paper, we will turn to study the epidemiological features of organic phase of mercury and investigate in deep the distribution, metabolism, and toxicity of mercury and methylmercury in some essential raw food materials, domestic animal feedstock, and some other biological specimens using basically simple analytical methods of chromatography as paper (PC) and thin layer (TLC).","PeriodicalId":397513,"journal":{"name":"Archives of Organic and Inorganic Chemical Sciences","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129606519","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: 15

Preparation of Morphine Derivatives Using Ionic Liquids 离子液体制备吗啡衍生物

Archives of Organic and Inorganic Chemical Sciences Pub Date : 2018-06-11 DOI: 10.32474/AOICS.2018.03.000156

S. Jayachandra, M. Sethi, Sanjay Mahajan, Kunwar Sanjeev Singh, Bhairaiah Mara, Purbita Chakraborty

引用次数: 1

An Efficient Protocol for the One Pot Synthesis of Pyranopyrazoles in Aqueous Medium using Triethanolamine as a Catalyst 以三乙醇胺为催化剂在水介质中一锅法合成吡喃吡唑的高效方法

Archives of Organic and Inorganic Chemical Sciences Pub Date : 2018-06-05 DOI: 10.32474/AOICS.2018.03.000155

J. Sonar, S. D. Pardeshi, S. A. Dokhe, A. Zine, R. Pawar, S. Thore

引用次数: 2

Chloride-Induced Highly Active Catalyst for Methyl Esterification of Alcohols 氯离子诱导的醇甲酯化高活性催化剂

Archives of Organic and Inorganic Chemical Sciences Pub Date : 2018-06-05 DOI: 10.32474/AOICS.2018.03.000154

Chengming Zhang, Yongzhao Wang, Yongxiang Zhao

引用次数: 0