JURNAL SAINS NATURAL最新文献

Study on The Potential Contamination of Heavy Metals: Analysis of Cr and Pb Contents From Power Plants in Indonesia Using the Batch Leaching Method 重金属潜在污染研究：使用批次浸出法分析印度尼西亚发电厂的铬和铅含量

JURNAL SAINS NATURAL Pub Date : 2024-02-01 DOI: 10.31938/jsn.v14i1.689

Farrah Fadhillah Hanum, Siti Salamah, Ahmad Rifai Sanuhung, Budi Setya Wardhana

{"title":"Study on The Potential Contamination of Heavy Metals: Analysis of Cr and Pb Contents From Power Plants in Indonesia Using the Batch Leaching Method","authors":"Farrah Fadhillah Hanum, Siti Salamah, Ahmad Rifai Sanuhung, Budi Setya Wardhana","doi":"10.31938/jsn.v14i1.689","DOIUrl":"https://doi.org/10.31938/jsn.v14i1.689","url":null,"abstract":"Coal ash, stemming from the combustion process in power plants, emerges as a potential pollution source due to its metal content. Recognized for housing various metals with environmental contamination potential, this study meticulously delves into the metal analysis of chromium (Cr) and lead (Pb) within four distinct samples of fly ash (FA) and bottom ash (BA) sourced from diverse coal-fired power plants across Indonesia. Employing the batch leaching method, the coal ash samples (FABA) underwent a 6-hour immersion in deionized water, replicating environmental scenarios akin to rainwater interaction with coal ash at disposal sites. XRF analysis scrutinized the chemical composition of each sample, while the leaching filtrate underwent analysis via pH meter and AAS to ascertain pH values and the concentrations of Pb and Cr. Results unveiled a substantial pH variation in the leachate, fluctuating from the initial deionized water pH of 7.00 to a range between 6.86 and 9.18. Notably, subsequent leaching indicated undetectable concentrations of Pb in all samples, with most exhibiting low Cr concentrations post-leaching, except for FA-2, FA-4, and BA-4, which displayed modest Cr concentrations. The scarcity or low concentrations of Pb and Cr post-leaching suggest an efficacious process inhibiting heavy metal release. This study offers profound insights into the chemical intricacies of coal ash, underlining its potential environmental ramifications. The absence of detectable heavy metal concentrations post-leaching underscores a minimal risk of environmental pollution, underscoring the imperative to comprehend the chemical reactions intrinsic to the leaching process for optimal waste management strategies.","PeriodicalId":17812,"journal":{"name":"JURNAL SAINS NATURAL","volume":"35 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139826609","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

Study on The Potential Contamination of Heavy Metals: Analysis of Cr and Pb Contents From Power Plants in Indonesia Using the Batch Leaching Method 重金属潜在污染研究：使用批次浸出法分析印度尼西亚发电厂的铬和铅含量

JURNAL SAINS NATURAL Pub Date : 2024-02-01 DOI: 10.31938/jsn.v14i1.689

Farrah Fadhillah Hanum, Siti Salamah, Ahmad Rifai Sanuhung, Budi Setya Wardhana

{"title":"Study on The Potential Contamination of Heavy Metals: Analysis of Cr and Pb Contents From Power Plants in Indonesia Using the Batch Leaching Method","authors":"Farrah Fadhillah Hanum, Siti Salamah, Ahmad Rifai Sanuhung, Budi Setya Wardhana","doi":"10.31938/jsn.v14i1.689","DOIUrl":"https://doi.org/10.31938/jsn.v14i1.689","url":null,"abstract":"Coal ash, stemming from the combustion process in power plants, emerges as a potential pollution source due to its metal content. Recognized for housing various metals with environmental contamination potential, this study meticulously delves into the metal analysis of chromium (Cr) and lead (Pb) within four distinct samples of fly ash (FA) and bottom ash (BA) sourced from diverse coal-fired power plants across Indonesia. Employing the batch leaching method, the coal ash samples (FABA) underwent a 6-hour immersion in deionized water, replicating environmental scenarios akin to rainwater interaction with coal ash at disposal sites. XRF analysis scrutinized the chemical composition of each sample, while the leaching filtrate underwent analysis via pH meter and AAS to ascertain pH values and the concentrations of Pb and Cr. Results unveiled a substantial pH variation in the leachate, fluctuating from the initial deionized water pH of 7.00 to a range between 6.86 and 9.18. Notably, subsequent leaching indicated undetectable concentrations of Pb in all samples, with most exhibiting low Cr concentrations post-leaching, except for FA-2, FA-4, and BA-4, which displayed modest Cr concentrations. The scarcity or low concentrations of Pb and Cr post-leaching suggest an efficacious process inhibiting heavy metal release. This study offers profound insights into the chemical intricacies of coal ash, underlining its potential environmental ramifications. The absence of detectable heavy metal concentrations post-leaching underscores a minimal risk of environmental pollution, underscoring the imperative to comprehend the chemical reactions intrinsic to the leaching process for optimal waste management strategies.","PeriodicalId":17812,"journal":{"name":"JURNAL SAINS NATURAL","volume":"39 3-4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139886218","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

Hemoglobin Levels and Number of Erythrocytes in Scabies-infected Male Mice (Mus musculus) Treated with Water Extract of Taro (Colocasia esculenta (L.) Schott Cultivar Hideung 用芋头（Colocasia esculenta (L.) Schott Cultivar Hideung）水提取物处理疥疮感染雄性小鼠（麝香猫）的血红蛋白水平和红细胞数量

JURNAL SAINS NATURAL Pub Date : 2024-01-31 DOI: 10.31938/jsn.v14i1.694

I. Widhyastini, Nia Yuliani, Ananda Sarah Nur Azizah

{"title":"Hemoglobin Levels and Number of Erythrocytes in Scabies-infected Male Mice (Mus musculus) Treated with Water Extract of Taro (Colocasia esculenta (L.) Schott Cultivar Hideung","authors":"I. Widhyastini, Nia Yuliani, Ananda Sarah Nur Azizah","doi":"10.31938/jsn.v14i1.694","DOIUrl":"https://doi.org/10.31938/jsn.v14i1.694","url":null,"abstract":"This study aims to analyze the hemoglobin levels and number of erythrocytes in scabies-infected male mice treated with taro water extract as a cheap and safe alternative treatment for scabies. The test animals were 24 mice weighing 20-25 grams, divided into 6 groups consisting of: K1: taro water extract 100gr/100 ml water, K2 taro water extract 200gr/100ml water, K3: using 300gr/100ml taro water extract water, K4: ivermectin positive control, K5: negative control with water alone, and K6 normal control not infected with scabies and not given treatment. The application of taro extract was carried out for five days. Observations were carried out every day, until day 7. Blood samples were taken from mice three times: before being infected with scabies (healthy), when infected with scabies, and after being treated with taro water extract. The data obtained was processed statistically using the SPSS software with the One Way ANOVA test. Sarcoptes scabiei infection affects the appearance of the blood profile of male mice when infected, there is an increase in the number of erythrocytes but does not affect hemoglobin levels. Treatment with water extract of the taro (Colocasia esculenta (L.) Schott) cultivar hideung in different concentrations did not show significant blood results, but it could heal wounds caused by scabies infection.","PeriodicalId":17812,"journal":{"name":"JURNAL SAINS NATURAL","volume":"113 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140476153","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

Potential Blending of Short Residues, Automotive Diesel Oil (ADO) and Kerosene for Marine Fuel Oil (MFO) Low Sulphur 180 Export Quality at PT. XYZ Using H-CAMS Simulation 在 PT.XYZ 公司使用 H-CAMS 模拟将短渣油、车用柴油 (ADO) 和煤油调和成低硫 180 出口质量的船用燃料油 (MFO)。使用 H-CAMS 模拟 XYZ 的低硫 180 出口质量

JURNAL SAINS NATURAL Pub Date : 2024-01-30 DOI: 10.31938/jsn.v14i1.595

Agung Aldi Saputra, Samhani Mahendra Wijaya, Erna Astuti, Aster Rahayu

{"title":"Potential Blending of Short Residues, Automotive Diesel Oil (ADO) and Kerosene for Marine Fuel Oil (MFO) Low Sulphur 180 Export Quality at PT. XYZ Using H-CAMS Simulation","authors":"Agung Aldi Saputra, Samhani Mahendra Wijaya, Erna Astuti, Aster Rahayu","doi":"10.31938/jsn.v14i1.595","DOIUrl":"https://doi.org/10.31938/jsn.v14i1.595","url":null,"abstract":"Marine Fuel Oil (MFO) Low Sulfur is a ship fuel for engines that have an rpm <300, which has a maximum sulfur content of 0.5% wt and a Kinematic Viscosity limit at a temperature of 50 ℃ with a maximum of 180 CSt. Blending MFO products has the potential to meet international market demand and optimize sales of MFO products in domestic and international markets. The change in specifications requested by PIMD (P International Marketing & Distribution) refers to the Decree of the Director General of Oil and Gas No. 0179.K/10/DJM.S/2019. This research aims to meet international market demand so that MFO (Marine Fuel Oil) products with new specifications are needed. This research uses a blending optimization method using Short Residue (SR), Automotive Diesel Oil (ADO), and Kerosene (KR) using simulation using H-CAMS software. This research focuses more on the critical values of MFO products, namely Density, Kinematic Viscosity, Flash Point, and Pour Point analysis. The blending simulation process has 12 variations between SR: ADO: KR. As the composition of ADO and Kerosene increases in the blending ratio, it causes a decrease in the Density, Flash Point, Kinematic Viscosity, and Pour Point values. In this research, the most optimum blending formula was found, namely formulas 4, 5, 10, and 11, all critical specifications in the manufacture of the MFO 180 LS product were met except for the Pour Point parameter, so this research needs to be continued by reducing the pour point value.","PeriodicalId":17812,"journal":{"name":"JURNAL SAINS NATURAL","volume":"61 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140481075","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

Instant Granule Formulation Combining White Sweet Potato Leaves Extract (Ipomoea batatas (L.) Lam.) and Javanese Chili (Piper retrofractum Vahl) 结合白甘薯叶提取物（Ipomoea batatas (L.) Lam.）和爪哇辣椒（Piper retrofractum Vahl）的速溶颗粒制剂

JURNAL SAINS NATURAL Pub Date : 2024-01-30 DOI: 10.31938/jsn.v14i1.612

Herman Irawan, Indah Permata Sari, Djadjat Tisnadjaja, N. Ekawati, A. Hertati, Ela Novianti, Eem Masaenah

{"title":"Instant Granule Formulation Combining White Sweet Potato Leaves Extract (Ipomoea batatas (L.) Lam.) and Javanese Chili (Piper retrofractum Vahl)","authors":"Herman Irawan, Indah Permata Sari, Djadjat Tisnadjaja, N. Ekawati, A. Hertati, Ela Novianti, Eem Masaenah","doi":"10.31938/jsn.v14i1.612","DOIUrl":"https://doi.org/10.31938/jsn.v14i1.612","url":null,"abstract":"Dengue haemorrhagic fever is a viral infection transmitted by the Aedes aegypti mosquito, which is one of the symptoms is thrombocytopenia. The extract from white sweet potato leaves is recognized for its potential to increase the number of platelet count. This research aimed to develop a formula for an instant granule combining white sweet potato leaves extract with Javanese chili extract meeting taste preferences and societal acceptability. The preparation of the extract was performed by maseration using 70% ethanol and then concentrated with a rotary evaporator. The result was a thick extract which was then dried in an oven at 50℃. The manufacture of instant granule formulations was conducted using wet granulation method. Various formulations were obtained by differentiated concentration of Javanese chili used in the formula (FI 1%, FII 2%, and FIII 3%). The instant granule formulation was evaluated by organoleptic assay and other essential parameters for instant granule, such as moisture content, flow rate, angle of repose, and particle size distribution. The FII 2% formulation emerged as the most acceptable with an average score of 2.17. Non-parametric analysis indicated no significant difference among the three formulas, as the obtained significant value (α) was ≥ 0.05, leading to the acceptance of the null hypothesis H0.","PeriodicalId":17812,"journal":{"name":"JURNAL SAINS NATURAL","volume":"16 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140482189","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

Modified Titanium Oxide with Metal Doping as Photocatalyst in Photochemical Water Splitting 掺杂金属的改性氧化钛在光化学水分离中用作光催化剂

JURNAL SAINS NATURAL Pub Date : 2024-01-30 DOI: 10.31938/jsn.v14i1.652

Haris Prayudha Setyawan, Okta Suryani

引用次数: 0

Biodiesel from Avocado Seed Oil with CaO and CaO Super Basa Catalyst from Egg Shell Waste 利用蛋壳废料中的 CaO 和 CaO 超级 Basa 催化剂从鳄梨籽油中提取生物柴油

JURNAL SAINS NATURAL Pub Date : 2024-01-30 DOI: 10.31938/jsn.v14i1.591

Paqih Choerunnas, Lany Nurhayati, Devy Susanty, Gladys Ayu Paramita Kusumah Wardhani

{"title":"Biodiesel from Avocado Seed Oil with CaO and CaO Super Basa Catalyst from Egg Shell Waste","authors":"Paqih Choerunnas, Lany Nurhayati, Devy Susanty, Gladys Ayu Paramita Kusumah Wardhani","doi":"10.31938/jsn.v14i1.591","DOIUrl":"https://doi.org/10.31938/jsn.v14i1.591","url":null,"abstract":"One waste that can be used as raw material for biodiesel is avocado seeds. Generally, biodiesel from avocado seed oil is synthesized using a homogeneous base catalyst, NaOH or KOH. However, the yield of Free Fatty Acids (FFA) is still low, so it is necessary to make biodiesel using heterogeneous base catalysts such as calcium oxide (CaO) and super base CaO from eggshell waste. Avocado seed oil biodiesel was synthesized using the method of transesterification with a ratio of 1:6, and a super base CaO/CaO catalyst of 1.5% (w/w) of the weight of avocado seed oil was added. The use of the CaO catalyst produced a Fatty Acid Methyl Ester (FAME) of 98.21% with a biodiesel yield of 73.77%, while the use of a super base CaO catalyst produced a FAME of 98.47% with a biodiesel yield of 74.50%. Characterization of biodiesel using FTIR shows the presence of methyl, ether, alcohol, carbonyl, and ester functional groups (C=O and C-O bonds), which are characteristics of the resulting biodiesel trans-esterification. Based on the yield and physical and chemical properties, the avocado seed oil biodiesel produced is better using the super base CaO catalyst than the CaO catalyst.","PeriodicalId":17812,"journal":{"name":"JURNAL SAINS NATURAL","volume":"91 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140482091","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

Reforestation in The Reclamation Area of Pongkor Gold Mining 在邦戈金矿开垦区重新造林

JURNAL SAINS NATURAL Pub Date : 2023-12-01 DOI: 10.31938/jsn.v13i4.649

Luluk Setyaningsih

引用次数: 0

Comparison of Fig Juice Fruitghurt with Variations in Sucrose and Length of Fermentation 无花果汁果乳与蔗糖和发酵时间变化的比较

JURNAL SAINS NATURAL Pub Date : 2023-11-23 DOI: 10.31938/jsn.v13i4.597

Anna Yuliana, Zalfa Zahira Fauziah, Hendy Suhendy

{"title":"Comparison of Fig Juice Fruitghurt with Variations in Sucrose and Length of Fermentation","authors":"Anna Yuliana, Zalfa Zahira Fauziah, Hendy Suhendy","doi":"10.31938/jsn.v13i4.597","DOIUrl":"https://doi.org/10.31938/jsn.v13i4.597","url":null,"abstract":"Fruitghurt is a fermented product made from fruit juice and milk, which is an important food source of protein to meet nutritional needs. Therefore, researchers added figs containing glucose, fructose, dietary fiber, and antibacterial properties to get the best fruit yoghurt. This study aims to determine the effect of sucrose concentration and the length of fermentation time for fig juice fruitghurt using Lactobacillus bulgaricus and Streptococcus thermophilus starters and to determine the antibacterial activity of fruit juice and fruitghurt through testing against Escherichia coli. Concentration was 0, 14, and 18%, and fermentation was carried out for 0, 18, and 24 hours, The parameters of this research were based on microbiological, chemical, and physical properties. The research showed that sucrose concentration and fermentation time affected Lactic Acid Bacteria (LAB), pH, , pH decreased from 4.5 to 4.0Total Titrated Acid (TAT), viscosity, total dissolved solids, color, aroma, texture, and taste. Total BAL had the highest value of CFU/mL, and TAT increased from 0.50% to 0.65%. The viscosity with the highest value is 12.33 cP. Total dissolved solids decreased from 13% to 11%. All parameters meet the requirements of SNI 2981:2009. The antibacterial activity test showed an inhibition zone with a value of 7.4 mm. The average value of the researcher's preference for color, taste, and aroma in the 0-hour formula with 0% sucrose, the 24-hour formula with 14% sucrose, and the 24-hour formula with 18% sucrose. The best fermentation time and sucrose concentration was 24 hours and 18% sucrose.","PeriodicalId":17812,"journal":{"name":"JURNAL SAINS NATURAL","volume":"49 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139243013","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

Analysis of Heavy Metals Concentration and Pollution Index on Water Quality in Labuan Beach Fishery Port Area, Banten 万丹州拉布安海滩渔港水质重金属浓度和污染指数分析

JURNAL SAINS NATURAL Pub Date : 2023-11-17 DOI: 10.31938/jsn.v13i4.607

Roza Ruspita

{"title":"Analysis of Heavy Metals Concentration and Pollution Index on Water Quality in Labuan Beach Fishery Port Area, Banten","authors":"Roza Ruspita","doi":"10.31938/jsn.v13i4.607","DOIUrl":"https://doi.org/10.31938/jsn.v13i4.607","url":null,"abstract":"Labuan Coastal Fishing Port (PPP) is an area with great potential for development in the economic and tourism sectors. Apart from being the center of the fishing industry in Pandeglang Regency, PPP Labuan also has beach tourist attractions. Some activities could cause the entry of heavy metals into waters and affect water quality. These activities include ships refuelling, ships exhaust emissions, ships washing and paint spills, as well as beach tourism activities. The pollution index is used to determine the level of pollution in waters. This research aimed to analyze water quality and pollution indices based on the heavy metals content iron (Fe), nickel (Ni), and copper (Cu). Samples were taken from three observation stations, namely the beach tourist area (station 1), the fish auction site (station 2), and the pier (station 3). Analysis of the heavy metals Fe, Ni, Cu was carried out using the Atomic Absorption Spectrophotometer method and the results were compared with Indonesian government reulation, PP No. 82/2001. Pollution index analysis wasusing the pollution index method. The heavy metals content of iron (Fe) ranged from 1.761 – 6.907 mg/L, nickel (Ni) ranged from 0.079 – 0.269 mg/L, and copper (Cu) is < 0.001 mg/L. Based on the pollution index (IP), station 1 was lightly polluted with an IP value of 3.75. At station 2 it was moderately polluted with an IP value of 5.91, and at station 3 it was lightly polluted with a value of 4.2.","PeriodicalId":17812,"journal":{"name":"JURNAL SAINS NATURAL","volume":"36 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139263888","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