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Review of Adsorption of Fe Metal by Activated Carbon Adsorbent 活性炭吸附金属铁的研究进展
Pub Date : 2021-08-23 DOI: 10.24114/ijcst.v4i2.27600
Fakta Ideal Zega, R. Selly, M. Zubir
Many researchers have used activated carbon as adsorbents for the adsorption heavy metal. The aim of present study was to investigate the adsorption properties of activated carbon for the removal of Fe metal. A research has been conducted to determine optimal of stirring time, stirring speed, adsorbent mass and particle size on activated carbon adsorbent in adsorption Fe metal. From the literature survey that increase in stirring time, stirring speed and adsorbent mass enhancing the removal of Fe metal. The results show which is on stirring time 60 minutes, stirring speed 90 radians per minute and adsorbent mass 2 grams have a high adsorption of the heavy metals of iron. Whereas the smaller of particle size enhancing the adsorption of Fe metal. The particle size of 200 mesh is the optimal particle size for adsorption of Fe. Finally, activated carbon showed to be a good potential adsorbent for removing Fe.
许多研究者将活性炭作为吸附剂用于重金属的吸附。本研究的目的是研究活性炭对金属铁的吸附性能。对活性炭吸附剂吸附金属铁的最佳搅拌时间、搅拌速度、吸附剂质量和粒径进行了研究。从文献综述来看,增加搅拌时间、搅拌速度和吸附剂质量对铁金属的去除有促进作用。结果表明,在搅拌时间为60 min,搅拌速度为90弧度/ min,吸附剂质量为2 g时,对重金属铁的吸附效果较好。而粒径越小,对铁金属的吸附作用越强。吸附铁的最佳粒径为200目。结果表明,活性炭是一种具有良好去除率的吸附剂。
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引用次数: 1
Effect of Differences of HCl Concentration on the Reaction of Chlorine Gas and Acetylene Gas In Clothing Liquids and Floor Cleaning Liquids 盐酸浓度差异对衣物液和地板清洁液中氯气和乙炔气反应的影响
Pub Date : 2021-08-23 DOI: 10.24114/ijcst.v4i2.27596
Salsabila Tambunan, M. N. Sari, L. M. Nasution, S. Rahmah, N. Nurfajriani
Floor cleaning fluid containing a solution of HCl mixed with carbide (CaC2), produces a reaction in the form of gases, air bubbles and there is sedimentation. The resulting gas is acetylene gas. NaClO solution in clothes bleach reacts with HCl in floor cleaning fluid to produce a reaction in the form of an explosion of fire, soot / carbon and produces chlorine gas. This study aims to determine the effect of differences in the concentration of HCl in floor cleaning fluid to produce the reaction of chlorine gas and acetylene gas by mixing floor cleaner with carbide and clothes bleach. In this study, using a floor cleaner with a concentration of 12% HCl and a concentration of 17% as a comparison. The results obtained are that the difference in the concentration of HCl has an effect on explosions, gases.
地板清洗液含有HCl与碳化物(CaC2)混合的溶液,以气体、气泡的形式产生反应,并有沉淀。产生的气体是乙炔气。衣物漂白剂中的NaClO溶液与地板清洗液中的HCl发生反应,以火焰、烟尘/碳爆炸的形式产生反应,并产生氯气。本研究通过将地板清洁剂与碳化物和漂白剂混合,确定地板清洗液中HCl浓度的差异对氯气和乙炔气反应的影响。在本研究中,使用HCl浓度为12%的地板清洁剂和HCl浓度为17%的地板清洁剂作为比较。结果表明,盐酸浓度的不同对爆炸、气体产生影响。
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引用次数: 2
Comparison Of Acetic Acid With As Formiic Acid Latex Pump Material 醋酸与甲酸乳胶泵材料的比较
Pub Date : 2021-08-23 DOI: 10.24114/ijcst.v4i2.27593
Rudi Munzirwan
Research on the comparison of acetic acid and formic acid as a latex coagulant has been carried out. To the latex coconut shell charcoal (particle size 80 mesh) was added to the weight of 42 grams then the latex was coagulated with acetic acid and formic acid with a pH of 4.7. As a research, the quality of rubber was carried out by measuring the initial plasticity, plasticity retention index and viscosity of rubber mooney. Finally, latex coagulated with acetic acid produced a better rubber than latex coagulated with formic aci).
对醋酸和甲酸作为乳胶混凝剂进行了对比研究。将椰子壳炭(粒径80目)加至42克,并用pH为4.7的乙酸和甲酸对乳胶进行凝固。通过测定橡胶的初始塑性、塑性保持指数和黏度,对橡胶的质量进行了研究。最后,用醋酸凝固的乳胶比用甲酸凝固的乳胶生产出更好的橡胶。
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引用次数: 2
Study Of Energy And Structure On Intermolecular Interactions In Organic Solvents Using Computational Chemistry Method 用计算化学方法研究有机溶剂分子间相互作用的能量和结构
Pub Date : 2021-08-23 DOI: 10.24114/ijcst.v4i2.27601
Nuraisah Malau, A. Nugraha
This study aims to determine the amount of energy, the difference in energy, the relationship between the amount of energy and the distance between compounds, and the interactions that occur in organic solvent molecules using computational chemistry methods. In determining the amount of energy and interactions that occur, computational chemistry calculations are used using NWChem software version 6.6 with the DFT method with the B3LYP hybrid function/basis set 6-31G, the calculation results are visualized using Jmol software. The results of calculations with large computations of energy for benzene are -230.62447487 KJ/mol, ethanol -154.01322923 KJ/mol, methanol -114.98816558 KJ/mol, hexane are -235.27001385 KJ/mol. Mixture of benzene and ethanol in a ratio of 1 : 1 -384.63823964 KJ/mol, 1 : 2 538.66009762 KJ/mol , and 2 : 1 - 615.26607558 KJ/mol. A mixture of benzene and methanol in a ratio of 1 : 1 -345.61255299 KJ/mol, 1 : 2 - 460.60826254 KJ/mol, and 2 : 1 -576.24044425 KJ/mol, a mixture of hexane and ethanol in a ratio of 1 : 1 - 389.28477268 KJ/mol, 1 : 2 -543.29869234 KJ/mol and 2 : 1 -624.55723290 KJ/mol. A mixture of hexane and methanol at a ratio of 1 : 1 -350.25984691 KJ/mol, 1 : 2 -465.26041654 KJ/mol and 2 : 1 -585.53373886 KJ/mole. The difference in energy is the most in a mixture of benzene and ethanol in a ratio of 1 : 2 -0.00916429 K /mol, in a mixture of benzene and methanol in a ratio of 1 : 2 - 0.00745651 KJ/mol, a mixture of hexane and ethanol in a ratio of 2 : 1 -0.00397597 KJ/mol, and a mixture of hexane and methanol in a ratio of 1 : 2 - 0.01407153 KJ/mol. and there is no relationship between the magnitude of the interaction energy of the mixture with the distance between the molecules.
本研究旨在利用计算化学方法确定有机溶剂分子中发生的能量、能量差、能量与化合物之间距离的关系以及相互作用。在确定能量和发生的相互作用时,使用NWChem软件6.6版进行计算化学计算,采用DFT方法,B3LYP混合函数/基集为6-31G,计算结果使用Jmol软件进行可视化。苯的能量计算结果为-230.62447487 KJ/mol,乙醇为-154.01322923 KJ/mol,甲醇为-114.98816558 KJ/mol,己烷为-235.27001385 KJ/mol。以1:1 -384.63823964 KJ/mol、1:2 538.66009762 KJ/mol、2:1 - 615.26607558 KJ/mol的比例混合苯和乙醇。苯和甲醇的比例分别为1:1 -345.61255299 KJ/mol、2:1 - 460.60826254 KJ/mol和2:1 -576.24044425 KJ/mol,己烷和乙醇的比例分别为1:1 - 389.28477268 KJ/mol、2:1 -543.29869234 KJ/mol和2:1 -624.55723290 KJ/mol。正己烷与甲醇的混合物,比例为1:1 -350.25984691 KJ/mol, 1:2 -465.26041654 KJ/mol和2:1 -585.53373886 KJ/mol。在苯和乙醇的比例为1:2 -0.00916429 K /mol时,在苯和甲醇的比例为1:2 - 0.00745651 KJ/mol时,在己烷和乙醇的比例为2:1 -0.00397597 KJ/mol时,在己烷和甲醇的比例为1:2 - 0.01407153 KJ/mol时,能量差最大。混合物相互作用能的大小与分子间的距离没有关系。
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引用次数: 0
Determining the Most Stable Structure of Benzamided Derivatives Using Density Functional Theory (DFT) 用密度泛函理论(DFT)确定苯酰胺类衍生物的最稳定结构
Pub Date : 2021-08-23 DOI: 10.24114/ijcst.v4i2.27594
Cinthia Uly Hotnami Sinaga, A. Nugraha
This study aims to determine the energy change ∆E and determine the most stable compound based on computation results using the Density Functional Theory (DFT) method. In determining the energy change ∆E and determining the most stable compound, computational chemical calculations were used using NWChem version 6.6 software with the DFT method with the B3LYP / 3-21G base set hybrid function, the results of the calculations were visualized using the Jmol software. The results of computational calculations on the compound Benzamide is 57467.3632844735 kJ / mol, (4 - chlorocarbonyl - benzial) - pyridine acid carbamics - 3 - ilmetyl ester is 641022.0125237265 kJ / mol, (4- phenylcarbamil benzyl) - pyridine acid carbamic - 3 - ilmetyl ester of 491144.0953277345 kJ / mol, [4- (2-nitro - phenyl carbamoyl) - benzyl] - pyridine acid carboxy - 3 - ilmetyl ester of 1031145,366027853 kJ / mol while for [4 - 2 (amino - phenyl carbamyl) - benzyl) - carboxylic acid - 3 - ilmetyl ester of -1034711.17423932 kJ / mol. Based on these data it can be concluded that [4 - 2 (amino - phenyl carbamyl) - benzyl) - carboxylic acid - 3 - ilmetyl ester is the most stable compound formed because of its lowest price (exothermic)
本研究旨在利用密度泛函理论(DFT)方法,根据计算结果确定能量变化∆E,并确定最稳定的化合物。在确定能量变化∆E和确定最稳定化合物时,采用NWChem 6.6版软件进行计算化学计算,采用DFT方法,采用B3LYP / 3-21G基集混合函数,计算结果采用Jmol软件进行可视化。计算结果表明,化合物苯酰胺为57467.3632844735 kJ / mol,(4-氯羰基-苄基)-吡啶酸氨基甲酸酯- 3 - ilmetyl酯为641022.0125237265 kJ / mol,(4-苯基氨基苄基)-吡啶酸氨基甲酸酯- 3 - ilmetyl酯为491144.0953277345 kJ / mol,[4 - (2-nitro -苯基[氨基甲酰)苄基)-羧基吡啶酸- 3 - ilmetyl酯1031145、366027853焦每摩尔,为[4 - 2(氨基-苯甲氨酰)-苄基)-羧酸- 3 - ilmetyl酯-1034711.17423932焦每摩尔。基于这些数据可以得出结论,[4 - 2(氨基-苯甲氨酰)-苄基)-羧酸- 3 - ilmetyl酯是最稳定的化合物由于其形成最低价格(放热)
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引用次数: 0
The Effect of Sambung Nyawa Leaf Extract (Gynura procumbens (Lour.) Merr.) on Hemoglobin of Rats Induced by Escherichia coli Bacteria 三峰Nyawa叶提取物的药效研究大肠杆菌对大鼠血红蛋白的影响
Pub Date : 2021-08-23 DOI: 10.24114/ijcst.v4i2.27603
Asnad Gulo, P. M. Silitonga
The aim of this research was to study the effect of extract of the sambung nyawa (Gynura procumbens (Lour.)Merr.)) leaf on hemoglobin concentration of rats blood. The research method is experimental used Completely Randomized Design (CRD) that consists of 6 treatments and 3 replications. The treatment of this research was induced rats with E. coli then given 0.5 mL of sambung nyawa leaf extract with doses 0.0 mg/kgBW; 300 mg/kgBW; 600 mg/kgBW and 900 mg/kgBW . The data was analyzed using Analysis of Variance. The results showed that the giving extract of the sambung nyawa leaves gives effect on on hemoglobin concentration of rats blood. Giving sambung nyawa leaf extract at dose 0.00 mg/kgBW; 300 mg/kgBW; 600 mg/kgBW and 900 mg/kgBW to rats gave the average of hemoglobin concentration in a row in each treatment is 10,5 g/dL; 11,7 g/dL; 12,3 g/dL and 13,7 g/dL.
本研究旨在研究三凤草叶提取物对大鼠血中血红蛋白浓度的影响。研究方法采用完全随机设计(CRD),共6个处理,3个重复。本研究采用大肠杆菌诱导大鼠后,给予剂量为0.0 mg/kgBW的三峰nyawa叶提取物0.5 mL;300毫克/ kgBW;600毫克/公斤瓦和900毫克/公斤瓦。采用方差分析对数据进行分析。结果表明,三峰草叶提取物对大鼠血中血红蛋白浓度有影响。给药剂量0.00 mg/kgBW的三峰nyawa叶提取物;300毫克/ kgBW;600 mg/kgBW和900 mg/kgBW给大鼠,连续平均血红蛋白浓度为10.5 g/dL;11、7 g / dL;12.3 g/dL和13.7 g/dL。
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引用次数: 2
Utilization of Betadine as an Indicator of the Presence of Vitamin C (Ascorbic Acid) In Fruits and Vegetables 利用Betadine作为果蔬中维生素C(抗坏血酸)存在的指标
Pub Date : 2021-08-23 DOI: 10.24114/ijcst.v4i2.27595
Tariza Humaira Tembusai, Annisa Tri Banoeari, R. Siahaan
This study aims to find out whether or not there is a content of vitamin C in tomatoes, cucumbers, chayote, spinach, lime and bilimbi by reacting with betadine containing povidone iodine 10% w/v, which is equivalent to 1% iodine. If iodine reacts with vitamin C, then the color of iodine will disappear. Each extract of fruits and vegetables is added to a glass containing aqua that has been added 25 drops of betadine with a solution color that is reddish brown. Obtained discoloration from each addition of fruit and vegetable extract: a) Cucumbers change color to solid bright yellow, b) Tomatoes change color to clear bright yellow, c) Chayote change color to white, d) Spinach changes color to dark green, e) Lime changes color to brownish orange and f) Bilimbi changes color to orange. The discoloration that occurs indicates that tomatoes, cucumbers, chayote, spinach, lime and bilimbi contain vitamin C.
本研究旨在通过与含聚维酮碘10% w/v(相当于1%碘)的甜菜碱反应,了解番茄、黄瓜、佛手瓜、菠菜、青柠、枸杞中是否存在维生素C的含量。如果碘与维生素C发生反应,那么碘的颜色就会消失。每一种水果和蔬菜的提取物都被加入到一个装有水的玻璃杯中,其中加入了25滴betadine,溶液的颜色是红棕色的。从每一种水果和蔬菜提取物中获得的变色:a)黄瓜变色为纯亮黄色,b)西红柿变色为清澈的亮黄色,c)佛手瓜变色为白色,d)菠菜变色为深绿色,e)青柠变色为棕黄色,f)碧林碧变色为橙色。发生的变色表明西红柿、黄瓜、佛手瓜、菠菜、酸橙和枸杞含有维生素C。
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引用次数: 0
Electric Energy Potential from Pineapples and Potatoes 菠萝和土豆的电势
Pub Date : 2021-08-23 DOI: 10.24114/ijcst.v4i2.27597
Atikah Nur Syahirah, R. Cahyati
Basically, the voltage can be obtained from various sources, including fruit. Fruit is often used as food, drink and a source of vitamins for the body's defense system. It turns out that it has the ability to generate electricity, especially for fruit that has a high acidity level. The acidity in some types of fruit is able to generate electricity because it is electrolyte. Fruits which contain mineral acids in the form of hydrochloric acid and citric acid, are strong electrolytes that break down completely into ions in a water solution. Besides having acid, fruits also contain a lot of water, so that when two different metals are immersed, the fruit solution will create a potential difference between the metal and water so that there is an electrode potential that can generate electric current as well. The purpose of making a rough draft of this practicum is to prove the existence of electrical energy in pineapples and potatoes. In this experiment, it has been proven that pineapples and potatoes can produce an electric current, indicated by the presence of a voltage when measured by a voltmeter.
基本上,电压可以从各种来源获得,包括水果。水果通常被用作食物、饮料和人体防御系统的维生素来源。事实证明,它有发电的能力,尤其是对于酸度高的水果。某些水果中的酸度能够发电,因为它是电解质。水果含有盐酸和柠檬酸形式的无机酸,是强电解质,在水溶液中完全分解成离子。除了含有酸,水果还含有大量的水,所以当两种不同的金属浸入水果溶液时,会在金属和水之间产生电位差,这样就会产生电极电位,从而产生电流。制作这个实习草稿的目的是为了证明菠萝和土豆中存在电能。在这个实验中,已经证明菠萝和土豆可以产生电流,通过电压表测量电压的存在来表示。
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引用次数: 0
Production of Activated Carbon from Natural Sources for Water Purification 天然活性炭在水净化中的应用
Pub Date : 2020-08-13 DOI: 10.24114/IJCST.V3I2.19531
R. A. F. Lubis, H. Nasution, M. Zubir
Activated carbon as one of the widely used adsorbent has many application in the environment for the water purification and removing pollutant. Activated carbon can produced from agricultural waste and has not been optimally used. In this paper, these natural sources from agricultural waste materials has been reviewed and the potential as activated carbon. Characteristics of activated carbon that can be used as a activated carbon depends on surface area and pore structure prepared through activation method. Activation method for carbon depends on the precursor and characteristic of activated carbon which are expected. Natural sources can be converted into activated carbon by chemical, physical, or physical-chemical activation. Therefore, this paper is aimed to providing information about methods of production activated carbon has been reported for purify water.
活性炭作为一种应用广泛的吸附剂,在环境水净化和去除污染物方面有着广泛的应用。活性炭可以从农业废弃物中生产,但尚未得到最佳利用。本文对这些来自农业废弃物的天然来源及其作为活性炭的潜力进行了综述。可以用作活性炭的活性炭的特性取决于通过活化方法制备的表面积和孔隙结构。活性炭的活化方法取决于所期望的前驱体和活性炭的特性。天然来源可以通过化学、物理或物理化学活化转化为活性炭。因此,本文旨在提供已报道的用于净化水的活性炭的生产方法。
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引用次数: 9
Preparation of Coconut Milk as Dandruff Removal 椰奶去屑的制备
Pub Date : 2020-06-05 DOI: 10.24114/IJCST.V3I1.18313
M. Damanik, H. Nasution, R. Selly, M. Zubir
Coconut milk is a thick white liquid extracted from coconut produced from shredded coconut and then squeezed with water. Coconut milk is an ingredient produced from processed old coconut. Coconut milk can be used as food preparations or as herbal beauty ingredients. One of the advantages of coconut milk in the field of beauty is that it is very effective as a dandruff remover. By using old coconut milk as a dandruff remover we can get amazing results with natural ingredients without spending a lot of money. Coconut milk has many contents such as water content, protein and fat which are quite high as well as cow's milk. Coconut milk is rich in vitamins C, B, B-6, thiamine, niacin, folate, a number of minerals (calcium, magnesium, iron and phosphorus). Pure coconut milk only contains 54 percent water, 35 percent fat and 11 percent nonfat solids (approximately 6 percent carbohydrates, less than 4 percent protein and other solids) which are categorized as emulsions of oil in water. Coconut milk is known to be effective in eliminating dandruff, because coconut milk contains coconut oil containing Vitramin E and fatty acids that can eliminate and eradicate dandruff. You do this by using coconut oil as a massage oil to massage the scalp.
椰奶是从椰子中提取的一种粘稠的白色液体,由椰丝制成,然后加水挤压。椰奶是一种由加工过的老椰子制成的原料。椰奶可以用作食品制剂或草药美容成分。椰奶在美容领域的优势之一是它是非常有效的去屑剂。通过使用旧椰奶作为去屑剂,我们可以得到惊人的效果与天然成分,而不花很多钱。椰奶的含水量、蛋白质和脂肪含量都和牛奶一样高。椰奶富含维生素C、B、B-6、硫胺素、烟酸、叶酸,以及多种矿物质(钙、镁、铁和磷)。纯椰奶只含有54%的水,35%的脂肪和11%的非脂肪固体(大约6%的碳水化合物,不到4%的蛋白质和其他固体),它们被归类为油在水中的乳液。众所周知,椰奶对去除头皮屑很有效,因为椰奶中含有含有维生素E和脂肪酸的椰子油,可以消除和根除头皮屑。你可以用椰子油作为按摩油来按摩头皮。
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引用次数: 0
期刊
Indonesian Journal of Chemical Science and Technology (IJCST)
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