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Indonesian Journal of Chemical Science and Technology (IJCST)最新文献

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Pb(II) and Oil Contamination Analysis of Belawan Sea, Medan City, North Sumatera 北苏门答腊省棉兰市Belawan海Pb(II)和石油污染分析
Indonesian Journal of Chemical Science and Technology (IJCST) Pub Date : 2019-07-10 DOI: 10.24114/ijcst.v2i2.16321
Lili Nur Indah Sari Tarigan, Nurul Qodri, Septi Lumongga Duma Rangkuti, M. Zubir
{"title":"Pb(II) and Oil Contamination Analysis of Belawan Sea, Medan City, North Sumatera","authors":"Lili Nur Indah Sari Tarigan, Nurul Qodri, Septi Lumongga Duma Rangkuti, M. Zubir","doi":"10.24114/ijcst.v2i2.16321","DOIUrl":"https://doi.org/10.24114/ijcst.v2i2.16321","url":null,"abstract":"Belawan waters are very densely populated with shipping, industrial and settlement. These various activities have an impact in the form of sea pollution by liquid waste such as Pb (II) and oil. Based on the results of the analysis of the content of Pb (II) in the highest waters, which is equal to 26.9120 ppm, it exceeds the threshold. The oil content in the waters has exceeded the threshold of 0.05 gr / L. One way to reduce the levels of Pb (II) and oil is by using coconut husk biosorbent. This is evidenced by the results of the analysis that there was a decrease in Pb (II) metal content after adsorption using coconut coir biosorbent which was equal to 6.2430ppm with adsorption capability of 20,699 ppm. The oil content in the water after the water is adsorbed using coconut coir biosorbent shows the Not Applicable result because the seawater sample has been homogenized so that no significant changes occur. This shows that coconut coir biosorbent is effective to reduce the content of Pb and Oil in water in the waters of the sea.","PeriodicalId":13519,"journal":{"name":"Indonesian Journal of Chemical Science and Technology (IJCST)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85105564","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: 1
Preparing of Cornstarch (Zea mays) Bioplastic Using ZnO Metal 利用金属氧化锌制备玉米淀粉生物塑料
Indonesian Journal of Chemical Science and Technology (IJCST) Pub Date : 2018-09-04 DOI: 10.24114/ijcst.v1i1.10595
Nur Hayati, Lazulva Lazulva
{"title":"Preparing of Cornstarch (Zea mays) Bioplastic Using ZnO Metal","authors":"Nur Hayati, Lazulva Lazulva","doi":"10.24114/ijcst.v1i1.10595","DOIUrl":"https://doi.org/10.24114/ijcst.v1i1.10595","url":null,"abstract":"The manufacture of the bioplastic was done through the mixing process using an aquades solvent with a ratio massa 10 gram and 7 gram cornstarch, 150 mL aquades, 2 Ml glycerol and 0,5 gram ZnO. This study aim to find out physical characteristies (water vapour transmission rate, water content, thickness,biodegradation) and mechanical charateristics (tensile strength, elongasi, modulus young) are made of cornstrach (Zea mays) using ZnO metal. From the test results tensile strength was 2.744-4.018 Mpa, percentage of elongation was 28.4632.383%, modulus young’s was 8.9031026535-14.08617709Mpa, thickness was 0.16-0.29mm, water vapor transmission rate was 0.4329-1.52525g/m2.24 hours, water content was 13.5-14.5%, and biodegradation was 3.7798-7.0346% and 455-809 days.","PeriodicalId":13519,"journal":{"name":"Indonesian Journal of Chemical Science and Technology (IJCST)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86621826","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: 2
Reduction of Heavy Metals Level in the Waste Water Using Phytoremediation Technique 利用植物修复技术降低废水中重金属含量
Indonesian Journal of Chemical Science and Technology (IJCST) Pub Date : 2018-09-04 DOI: 10.24114/ijcst.v1i1.10594
A. Afrina, Lazulva Lazulva
{"title":"Reduction of Heavy Metals Level in the Waste Water Using Phytoremediation Technique","authors":"A. Afrina, Lazulva Lazulva","doi":"10.24114/ijcst.v1i1.10594","DOIUrl":"https://doi.org/10.24114/ijcst.v1i1.10594","url":null,"abstract":"This research was carried out due to the existence of the waste heavy metals in the aquatic environment, which was very harmful to the sustainability of the environment. The purpose of this research was to find out the reduction percentage of copper metal (Cu) on the waste. This research using method phytoremediation test. The plants used were water hyacinth (Eichornia crassipes) and algae (Hydrilla verticilata). This study was conducted three times of the repetition in each variable. The measurement of Cu concentration using Atomic Absorption Spectroscopy (AAS) flame. The Results of this research was found that the efficiency of the average reduction in the concentration of Cu by water hyacinth was 82.8368% and the efficiency of the average reduction in the concentration of Cu by algae was 63.4042%.","PeriodicalId":13519,"journal":{"name":"Indonesian Journal of Chemical Science and Technology (IJCST)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77184372","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: 1
Effect of pH on Biosorption Ion Cd(II) in Solutions using Lengkuas Merah (Alpinia Gralanga) pH值对冷杉藻生物吸附离子Cd(II)的影响
Indonesian Journal of Chemical Science and Technology (IJCST) Pub Date : 2018-09-04 DOI: 10.24114/ijcst.v1i1.10596
A. Fauzi, L. Utami
{"title":"Effect of pH on Biosorption Ion Cd(II) in Solutions using Lengkuas Merah (Alpinia Gralanga)","authors":"A. Fauzi, L. Utami","doi":"10.24114/ijcst.v1i1.10596","DOIUrl":"https://doi.org/10.24114/ijcst.v1i1.10596","url":null,"abstract":"The biosorption characteristic of Cd(II) ions from aqueous solution using Lengkuas Merah (Alpinia Gralanga) were investigated as a function of pH. The maximum biosorption capacity of a Lengkuas Merah (Alpinia Gralanga) for Cd(II) was found to be 18,37 mg/L and 91,85% at optimum pH was 10. At pH 2 to 10 the biosorption of Cd ions tends to increase. The result showed that the lengkuas merah  can be evaluated as an alternative biosorbent to treatment waste water containing Cd(II). A Lengkuas Merah is low cost and has considerable high biosorption capacity.","PeriodicalId":13519,"journal":{"name":"Indonesian Journal of Chemical Science and Technology (IJCST)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79821806","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: 1
Determining the Content of Nutrition and Organoleptic Test of Chips from Jackfruit Seed and Durian seed 菠萝蜜籽和榴莲籽切片的营养成分测定及感官试验
Indonesian Journal of Chemical Science and Technology (IJCST) Pub Date : 2018-07-11 DOI: 10.24114/ijcst.v1i1.10193
Sofiyanita Sofiyanita, S. Nurhayati
{"title":"Determining the Content of Nutrition and Organoleptic Test of Chips from Jackfruit Seed and Durian seed","authors":"Sofiyanita Sofiyanita, S. Nurhayati","doi":"10.24114/ijcst.v1i1.10193","DOIUrl":"https://doi.org/10.24114/ijcst.v1i1.10193","url":null,"abstract":"The seed of jackfruit and seed of Durian are solid waste and rarely consumed by society. To increase economic value, the seed of jackfruit and the seed of Durian utilized and processed to be new food source and one of them was chips. The study was done in three stages, making the chips from the seed of jackfruit and the seed of Durian, analyzing the content of nutrient and organoleptic test. Analyzing the content of nutrient in the study was the level of protein, fat, water, dust, and carbohydrate and organoleptic test at color, taste, aroma, and texture from chips produced. Based on the results  of  study  that  the  level  of  protein,  fat,  water,  dust,  carbohydrate  and organoleptic  test  of  chips  from  the  seed  of  jackfruit  was  1.1151%,  0.9687%,9,3626%, 43118%, 84.2419%, and the chips from the seed of Durian the level of protein, fat, water, dust, and carbohydrate were 1.0786%, 2.7932%, 8,8043%, 3.4763 and 83.8477%. The chips from the seed of jackfruit and the seed of Durian had high level of carbohydrate. Thus the writer likes the chips form the seed of jackfruit and the seed of Durian. Based on Anova test toward color, taste, aroma, and texture it indicated that there is no the difference between the seed of jackfruit and the seed of Durian.","PeriodicalId":13519,"journal":{"name":"Indonesian Journal of Chemical Science and Technology (IJCST)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74708831","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: 4
Characterization and Antioxidant Activity Edible Film of Durian (Durio zibethinus) Seed Starch with the Addition of Soursop (Annona muricata L.) Leaf 添加刺果的榴莲种子淀粉食用膜的表征及抗氧化活性研究叶
Indonesian Journal of Chemical Science and Technology (IJCST) Pub Date : 2018-07-11 DOI: 10.24114/ijcst.v1i1.10200
Yuni Fatisa, N. Agustin
{"title":"Characterization and Antioxidant Activity Edible Film of Durian (Durio zibethinus) Seed Starch with the Addition of Soursop (Annona muricata L.) Leaf","authors":"Yuni Fatisa, N. Agustin","doi":"10.24114/ijcst.v1i1.10200","DOIUrl":"https://doi.org/10.24114/ijcst.v1i1.10200","url":null,"abstract":"Edible film is one of the environmentally friendly packaging materials and not harmful to health because it is made up of natural ingredients such as proteins, lipids, and polysaccharides. In addition to environmentally friendly, the development of edible film on food packaging can provide better product quality, as it is made from natural ingredients that contain various natural chemical compounds that are beneficial and can be directly consumed. In this study prepared edible film derived from durian seed starch with the addition of soursop leaf extract. This research aimed at knowing the physical and chemical characteristics, and antioxidant activity of  the edible film. The type of research used is experiment methods. The results showed that the best research findings of the edible film were on the addition of 2 g soursop leaf extract and the physical characteristic was transmission of water vapor that was 1.70 g/m2. 24 hours, the chemical characteristics were water content that was 17.33% and activity of antioxidant that was 1.5875 mg/mL.","PeriodicalId":13519,"journal":{"name":"Indonesian Journal of Chemical Science and Technology (IJCST)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85335444","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: 2
Synthesis of Vinegar Acid with Raja Uli Banana Peel (Musa paradiaca) by Adding Bagasse Water (Saccharum officinarum) 添加甘蔗渣水(Saccharum officinarum)合成乌拉乌里香蕉皮(Musa paradaca)醋酸
Indonesian Journal of Chemical Science and Technology (IJCST) Pub Date : 2018-07-10 DOI: 10.24114/IJCST.V1I1.10189
N. Nurhasanah, Zona Octarya
{"title":"Synthesis of Vinegar Acid with Raja Uli Banana Peel (Musa paradiaca) by Adding Bagasse Water (Saccharum officinarum)","authors":"N. Nurhasanah, Zona Octarya","doi":"10.24114/IJCST.V1I1.10189","DOIUrl":"https://doi.org/10.24114/IJCST.V1I1.10189","url":null,"abstract":"The large amount of banana peel waste that increased soil acidity and caused environmental pollution. Bagasse water was used to provide additional sugar besides using Raja Uli banana peel due to the use of sugar is less economical This study is aimed at making vinegar acid with Raja Uli banana peel by adding bagasse water as the weak electrolyte solution on electrolyte and non-electrolyte practice . The optimization was done at the time used for fermentation by varying the time 1, 2, 3, and 4 days in each fermentation step. For testing vinegar acid, FeCl3 and H2SO4 as the qualitative test and alkalimetric titration were used as the quantitative test. The results showed that the third day was the optimum time to produce alcohol content with an average percentage of 2.5% and optimum acetic acid of 0.063 g / 100 mL.","PeriodicalId":13519,"journal":{"name":"Indonesian Journal of Chemical Science and Technology (IJCST)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85107882","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
Antibacterial Activity of Extract A. luteocarpa 木犀草提取物抑菌活性研究
Indonesian Journal of Chemical Science and Technology (IJCST) Pub Date : 2018-07-10 DOI: 10.24114/ijcst.v1i1.10182
T. Juwitaningsih, D. Roza, Nora Susanti
{"title":"Antibacterial Activity of Extract A. luteocarpa","authors":"T. Juwitaningsih, D. Roza, Nora Susanti","doi":"10.24114/ijcst.v1i1.10182","DOIUrl":"https://doi.org/10.24114/ijcst.v1i1.10182","url":null,"abstract":"Meat is one of the food products that can easily be damaged, ( therefore it is necessary to preserve the process). therefore it needs to be done the process of preservation. In this study we studied the anti-bacterial activity of Alpinia luteocarpa extract against fresh meat rot bacteria, with paper disc diffusion method which is the standard recommended by the Clinical and Laboratory Standard Institute (CLSI,2012). The results of antibacterial activity test showed extract and fraction of A. luteocarpa able to inhibit bacterial growth B.cereus ATCC 21772   and. K.  pneumonia ATTC 13773. The bacteriostatic properties of the extract and fraction of A. luteocarpa against B. cereus ATCC 21772 and K. pneumonia ATTC 13773 were better than the positive control of chlorhexidine antibiotics (500 μg / mL) with inhibition zones 9-11 mm and 7-9 mm.","PeriodicalId":13519,"journal":{"name":"Indonesian Journal of Chemical Science and Technology (IJCST)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75354629","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: 1
Characterization of Chitosan-Bentonite and Water Hyacinth Plant as a Potential Adsorbent 壳聚糖-膨润土及水葫芦作为潜在吸附剂的表征
Indonesian Journal of Chemical Science and Technology (IJCST) Pub Date : 2018-07-04 DOI: 10.24114/ijcst.v1i1.16318
M. Zubir, Z. Muchtar, Nurmalis Nurmalis, H. Nasution, M. Syafei, R. Syahputra
{"title":"Characterization of Chitosan-Bentonite and Water Hyacinth Plant as a Potential Adsorbent","authors":"M. Zubir, Z. Muchtar, Nurmalis Nurmalis, H. Nasution, M. Syafei, R. Syahputra","doi":"10.24114/ijcst.v1i1.16318","DOIUrl":"https://doi.org/10.24114/ijcst.v1i1.16318","url":null,"abstract":"Water hyacinth (Eichhornia crassipes) has a very rapid growth in the waters so it can cause eutrophication. The silica content of 5.56% allows water hyacinth can be utilized as a natural adsorbent. Bentonit has an advantage as an adsorbent because it has an inter-layered structure that can be easily modified with chitosan, resulting in better performance as an eco-friendly adsorbent. This research aims to determine the characterization of chitosan-bentonite and water hyacinth as a adsorbent of Pb(II)removal. Characterization tests were performed using X-ray difraction (XRD) and Fourier Transform Infra Red (FTIR) spectrophotometry. From the results of quantitative XRD analysis can be seen that the adsorbent of chitosan-bentonit and water hyacinth have different adsorbent characteristic, but has the same crystal system that is triclinic crystal system.","PeriodicalId":13519,"journal":{"name":"Indonesian Journal of Chemical Science and Technology (IJCST)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83107955","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: 1
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