Journal of Bioprocess, Chemical and Environmental Engineering Science最新文献

Penentuan Stabilitas Penyimpanan Aspal Modifikasi Berbasis Karet Alam Padat Jenis Crumb Rubber 确定了一种由天然橡胶固体固体橡胶制成的改良沥青基的稳定性

Journal of Bioprocess, Chemical and Environmental Engineering Science Pub Date : 2021-11-30 DOI: 10.31258/jbchees.3.1.1-14

Arya Wiranata

{"title":"Penentuan Stabilitas Penyimpanan Aspal Modifikasi Berbasis Karet Alam Padat Jenis Crumb Rubber","authors":"Arya Wiranata","doi":"10.31258/jbchees.3.1.1-14","DOIUrl":"https://doi.org/10.31258/jbchees.3.1.1-14","url":null,"abstract":"The development of road infrastructure in Indonesia is very rapid to keep pace with the growth of vehicles. However, the structure of road pavements in Indonesia is not optimal and causes various problems due to overload and Indonesia's climate. Therefore, it is necessary to increase the performance of asphalt binders with additives such as natural rubber or better known as natural rubber modified asphalt. This study examines the effect of natural rubber content (crumb rubber standard Indonesian rubber 20), sulfur additive content, storage temperature, and storage time on the phase stability of natural rubber modified asphalt. Making crumb rubber modified asphalt samples begins with the mastication of crumb rubber in an open mill. Next, crumb rubber was melted at 200°C and mixed in asphalt with 8, 10, and 12% levels. The last stage is to test the stability of modified asphalt storage at a temperature of 160°C for 48 hours. The results showed that modified asphalt with various levels of rubber experienced storage stability problems after 48 hours. The addition of sulfur additives did not significantly affect storage stability. The optimum addition of natural rubber at 10% crumb rubber content with the difference in softening point (Tbottom – Ttop) reached 11.6°C.","PeriodicalId":104683,"journal":{"name":"Journal of Bioprocess, Chemical and Environmental Engineering Science","volume":"122 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124513190","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

Pemodelan Tekanan Bawah Permukaan Dengan Menggunakan Metode Time Series Dalam Proses Injeksi Slurry di Sumur Disposal Duri Field 用在除刺场灌肠的污泥中使用的时间电路对地表压力进行模型

Journal of Bioprocess, Chemical and Environmental Engineering Science Pub Date : 2021-11-29 DOI: 10.31258/jbchees.1.2.1-12

Bambang Sutrimo

{"title":"Pemodelan Tekanan Bawah Permukaan Dengan Menggunakan Metode Time Series Dalam Proses Injeksi Slurry di Sumur Disposal Duri Field","authors":"Bambang Sutrimo","doi":"10.31258/jbchees.1.2.1-12","DOIUrl":"https://doi.org/10.31258/jbchees.1.2.1-12","url":null,"abstract":"Oily sand and water contaminated with oil is part of the results of exploration and exploitation of petroleum categorized as hazardous and toxic waste (B3), it is necessary to carry out special processing into slurry fluid and injection into disposal wells. The main problem in the injection process is the increase in bottom hole pressure during the injection process which causes well plugging problems and hampers oil production activities in the Duri field. The main objective of this research is to determine the best model and safety factor in the injection process using the time series Arima Software ‘R’ method with the parameters of the slurry flow rate and slurry composition based on the injection strategy at injection well B. Forecasting Arima in well B with an injection flow rate of 2,3 m3/minute and a slurry concentration of 25% waste and 75% water is Arima model 3 (1,1,0) with the smallest value of Akaike Information Criteria (AIC) 2,773,98 and the smallest Schwarzt Bayesian Information Criteria (SBC) is 2,781, the average bottom hole pressure predicted is 1,256.4 psi and the average bottom hole pressure from the field data is 1,247.54 psi. Validation of the forecasting model for well B that the percentage of model error compared to field data in well B is 0.37%, Root Mean Square Error (RMSE) 4,85 and model error using pressure gradient 0,37%. Arima modeling can be applied to predict bottom hole pressure based on the injection strategy in the injection process to the disposal well.","PeriodicalId":104683,"journal":{"name":"Journal of Bioprocess, Chemical and Environmental Engineering Science","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126160625","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

Pengaruh Jarak Elektroda Dan Kuat Arus Pada Pengolahan Air Gambut Dengan Proses Elektrokoagulasi Secara Kontinu 电极距离和强电流对泥炭水的持续凝结过程的影响

Journal of Bioprocess, Chemical and Environmental Engineering Science Pub Date : 2021-03-31 DOI: 10.31258/jbchees.2.1.46-55

Albi Fadhlah Ramadhan, Idral Amri, Drastinawati Drastinawati

{"title":"Pengaruh Jarak Elektroda Dan Kuat Arus Pada Pengolahan Air Gambut Dengan Proses Elektrokoagulasi Secara Kontinu","authors":"Albi Fadhlah Ramadhan, Idral Amri, Drastinawati Drastinawati","doi":"10.31258/jbchees.2.1.46-55","DOIUrl":"https://doi.org/10.31258/jbchees.2.1.46-55","url":null,"abstract":"Peat water is surface water that inundates an area, formed from a pile of organic material for a long time. Peat water can cause skin irritation and metabolic disorders. The purpose of this study was to determine the application of the electrocoagulation method can be used to neutralize pH, and reduce levels of TSS and Fe in peat water treatment and also to determine the effect of changes in electrode spacing and current strength on decreasing TSS and Fe levels and neutralizing the pH of peat water. The parameters tested include pH, TSS (Total Suspended Solid), and Fe. The electrocoagulation process uses electric power which flows in the direction through the electrodes. Electrocoagulation reactor paired with a cable connected to the power supply and then connected to an electric current with a variation of current strength (1.0; 1.4; and 1.8 A) and electrode distance variations (0.5; 0.75; 1 inch). The results of this study giving the optimum conditions obtained at a strong current of 1.8 A and 0,75 inch electrode distance with an increase in pH from 3.5 to 6.8, a decrease in TSS from 128 to 36 mg / L, a decrease in Fe of 78.9% from 2.405 mg / L to 0.506 mg / L.","PeriodicalId":104683,"journal":{"name":"Journal of Bioprocess, Chemical and Environmental Engineering Science","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133671775","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

Optimasi Kondisi Proses Sintesis Biodiesel Berbasis Reaksi Esterifikasi Palm Fatty Acid Distillate Dengan Katalis Cu-Hidroksiapatit Dari Limbah Tulang Ikan 优化以棕榈肥乙酸蒸馏为基础的生物柴油合成过程的条件

Journal of Bioprocess, Chemical and Environmental Engineering Science Pub Date : 2021-03-31 DOI: 10.31258/jbchees.2.1.12-24

Muhammad Rahman, Yelmida '. Aziz, Panca Setia Utama

{"title":"Optimasi Kondisi Proses Sintesis Biodiesel Berbasis Reaksi Esterifikasi Palm Fatty Acid Distillate Dengan Katalis Cu-Hidroksiapatit Dari Limbah Tulang Ikan","authors":"Muhammad Rahman, Yelmida '. Aziz, Panca Setia Utama","doi":"10.31258/jbchees.2.1.12-24","DOIUrl":"https://doi.org/10.31258/jbchees.2.1.12-24","url":null,"abstract":"Biodiesel is an alternative fuel to a diesel engine that can replace or reduce the use of petroleum diesel. PFAD (Palm Fatty Acid Distillate) is a by-product of physical refining of crude palm oil products and is contained of free fatty acid (FFA) more than 85 wt.%. Esterification is a chemical reaction used to produce biodiesel from feedstocks with high FFA. Hydroxyapatite derived from waste fish bones has been effectively utilized as a support for preparation of the heterogeneous copper acid catalyst. The Copper- Hydroxyapatite catalyst has been prepared through wet-impregnation.This study intends to produce biodiesel with Cu- Hydroxyapatite catalyst derived from fishbone waste in esterification of PFAD and methanol. Esterification reaction parameters were varied to obtain the maximum yield of biodiesel. Optimization of esterification reaction parameters such as methanol to PFAD ratio, catalyst loading, and reaction temperature was carried out by Response Surface Methodology-Central Composite Design (RSM-CCD). The optimum yield obtained using regression models were found to be reaction temperature 62oC, catalyst to PFAD weight 1,82 wt.%, and PFAD to methanol molar ratio 1:8,28. The reaction under the optimum condition predicted at 92,52% of biodiesel yield.","PeriodicalId":104683,"journal":{"name":"Journal of Bioprocess, Chemical and Environmental Engineering Science","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124532394","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

Pengolahan Limbah Cair Industri Minyak Sawit Menggunakan Reaktor Listrik Plat Kolom Secara Kontinu serta dengan Penambahan PAC 油棕榈工业废水处理过程中，采用电路板和引入PAC

Journal of Bioprocess, Chemical and Environmental Engineering Science Pub Date : 2021-03-31 DOI: 10.31258/jbchees.2.1.32-45

Dwi Widyaningsih, Idral Amri, Desi Heltina

{"title":"Pengolahan Limbah Cair Industri Minyak Sawit Menggunakan Reaktor Listrik Plat Kolom Secara Kontinu serta dengan Penambahan PAC","authors":"Dwi Widyaningsih, Idral Amri, Desi Heltina","doi":"10.31258/jbchees.2.1.32-45","DOIUrl":"https://doi.org/10.31258/jbchees.2.1.32-45","url":null,"abstract":"Palm oil industrial waste contains various dissolved compounds in the form of short fibers, hemicellulose, and their derivatives, proteins, free organic acids, a mixture of minerals and organic pigments such as anthocyanins, carotenes, polyphenols, lignins and tannins. Organic compounds in this waste will cause problems such as an increase in TSS, COD values which can pollute the environment. The electrocoagulation method has the potential to reduce TSS, TDS, COD content and neutralize pH. The purpose of this study was to determine the effect and optimum conditions of the electrocoagulation process with variations in flow rate, voltage, spacing between plates and the addition of poly aluminum chloride (PAC) coagulants to decrease TSS, COD and pH parameters so that they meet the quality standards of waste in Permen LH. No. 5/2014. The method used is a continuous electrocoagulation process using an aluminum catalyst and the addition of PAC. The variables used in this study were the stress variable (24; 26; 28 V) and the variable flow rate velocity (0.3; 1,2; 2.5 L / min) and the variation of the spacing between the plates (2, 3, 4 cm). The results of this study found that the optimum conditions were obtained at a voltage of 28 volts and a flow rate of 0.3, and a distance between the plates of 2 cm and the addition of 400 ppm PAC with a percentage of TSS removal of 92.093% from 2150 mg / L to 170 mg / L, and a decrease in COD of 85.343% from 1310 mg / L to 192 mg / L. The results obtained show that it is in accordance with the standards of the Ministry of Environment and Forestry Regulation No.5 of 2014.","PeriodicalId":104683,"journal":{"name":"Journal of Bioprocess, Chemical and Environmental Engineering Science","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121807200","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

DESAIN REAKTOR TRANSESTERIFIKASI PADA PRAPERANCANGAN PABRIK METIL ESTER DARI CPO (CRUDE PALM OIL) CPO甲酯炼油厂(CRUDE PALM OIL)预设计的脱电厂设计

Journal of Bioprocess, Chemical and Environmental Engineering Science Pub Date : 2021-03-31 DOI: 10.31258/jbchees.2.1.25-31

Idral Amri, Tifanny Frimacia

{"title":"DESAIN REAKTOR TRANSESTERIFIKASI PADA PRAPERANCANGAN PABRIK METIL ESTER DARI CPO (CRUDE PALM OIL)","authors":"Idral Amri, Tifanny Frimacia","doi":"10.31258/jbchees.2.1.25-31","DOIUrl":"https://doi.org/10.31258/jbchees.2.1.25-31","url":null,"abstract":"Along with the development of the era, the need for fuel oil is increasing. The development of research and the use of diesel motors in industry will not stop just because of the depletion of fossil fuels. The search for alternative fuels as a substitute for diesel continues to be carried out in addition to dealing with the problems of the global energy and environmental crisis as well as helping to develop automotive technology as a work of human culture. Methyl ester is a biofuel that can be used to power diesel engines. The availability of fuel oil derived from petroleum is running low and the price is increasing so that alternative fuel sources are needed. One of the substitutes for conventional fuels from petroleum is vegetable oil. Methyl ester is produced using a transesterification reaction by changing the triglycerides which are reacted with one of the alcohol compounds, namely methanol to become methyl ester, and a production capacity of 250,000 tons / year is obtained. The main design tool is the CSTR (Continuous Flow Stirred-Tank Reactor) reactor which is used as a place for the transesterification reaction between triglycerides and methanol to produce methyl ester (main product) and glycerol (by-product). The operating temperature used is 333.15K. Based on the calculation results, the reactor volume is 57.28 m3, the reactor diameter (OD) is 168 in m with torispherical flanged and dished head and skirt support.","PeriodicalId":104683,"journal":{"name":"Journal of Bioprocess, Chemical and Environmental Engineering Science","volume":"237 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129679858","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

Upgrading Karakteristik Biopelet Tandan Kosong Sawit Dengan Penambahan Oil Sludge Sebagai Co-Firing 添加油污泥作为辅助燃料提升棕榈空心穗条生物颗粒的特性

Journal of Bioprocess, Chemical and Environmental Engineering Science Pub Date : 2021-03-31 DOI: 10.31258/jbchees.2.1.1-11

Tengku Mukhlis, Idral Amri, Z. Helwani

{"title":"Upgrading Karakteristik Biopelet Tandan Kosong Sawit Dengan Penambahan Oil Sludge Sebagai Co-Firing","authors":"Tengku Mukhlis, Idral Amri, Z. Helwani","doi":"10.31258/jbchees.2.1.1-11","DOIUrl":"https://doi.org/10.31258/jbchees.2.1.1-11","url":null,"abstract":"Biopelet is one of the alternative fuels converted from biomass. Biomass which has great potential to be converted into biopelet is Empty Fruit Bunches (EFB). Such considerations make researchers interested in conducting a study on the use of EFB as an alternative fuel in the form of biopelets. In this research, we used torefaction and densification processes and the addition of oil sludge as a co-firing to increase the mass and energy density which had been a problem with the nature of EFB. The research procedure started from the raw material preparation stage, the EFB and oil sludge torefaction process and the bioepelet manufacturing stage. For fixed variables, the raw material size (EFB) is ± 15 mm , the raw material ratio is 70:30 (EFB: Oil Sludge), the torefaction temperature is 275 °C, the size of the biopelet diameter is 20 mm (ISO 17225). For 20 mesh particles, the N2 flow rate was 50 ml / minute, for the changing variables were the torefaction detention time of 30, 45 and 60 minutes, the pressing pressure was 30, 40 and 50 bar.The results showed that there was an effect of torefaction detention time which was directly proportional to the increase in proximate characteristics and calorific value of biopelets with the best results of 3.35% moisture content, 8.66% ash content, 9.50% volatile content, 78.49 %, fixed carbon content, and the calorific value of 4597.76 cal / g under the conditions of 60 minutes of torefaction detention time. There is an effect of pressing pressure which is directly proportional to the increase in the mechanical properties of the biopelet with the best results of density 1.148 gr / cm3, compressive strength 16.86 bar, and porosity of biopelet 13.33% under pressure conditions of 50 bar. The effect of adding oil Sludge as co-firing resulted in the calorific value of the biopelet being lower than the calorific value of EFB. This is because the calorific value of oil sludge is lower than the calorific value of EFB.","PeriodicalId":104683,"journal":{"name":"Journal of Bioprocess, Chemical and Environmental Engineering Science","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134598893","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

Optimasi Pembuatan Film Biodegradabel dari Komposit Pati Sagu – MCC yang Dimodifikasi dengan Asam Sitrat Sagu淀粉复合材料的生物降解特性——用柠b酸改良的MCC

Journal of Bioprocess, Chemical and Environmental Engineering Science Pub Date : 2020-11-30 DOI: 10.31258/jbchees.1.2.39-51

Trisuciati Syahwardini, Bahruddin, Ida Zahrina

引用次数: 0

Prediksi Kesetimbangan Cair-Cair Sistem Pati-PVA-Air dengan metode UNIFAC 用UNIFAC方法预测液体平衡系统

Journal of Bioprocess, Chemical and Environmental Engineering Science Pub Date : 2020-11-30 DOI: 10.31258/jbchees.1.2.52-62

Lusiana Sri Wahyuni, Bahruddin, I. Zahrina

{"title":"Prediksi Kesetimbangan Cair-Cair Sistem Pati-PVA-Air dengan metode UNIFAC","authors":"Lusiana Sri Wahyuni, Bahruddin, I. Zahrina","doi":"10.31258/jbchees.1.2.52-62","DOIUrl":"https://doi.org/10.31258/jbchees.1.2.52-62","url":null,"abstract":"The manufacture of bioplastics by mixing PVA with starch, for example from sago, cassava, sweet potatoes, and potatoes and so on have been widely practiced. However, in some cases, blending of the polymers may not produce the desired properties due to the lack of miscibility between the mixed polymers. So that in making bioplastics a mixture of starch and PVA requires data support of the miscibility of raw materials for making bioplastics into water solvents. Miscibility can be predicted using UNIQUAC Functional - group Activity Coefficient (UNIFAC) method. The activity coefficient resulting from the UNIFAC calculation of the ternary system of starch, PVA and water shows that the activity coefficient of starch tends to increase with increasing starch composition, while the activity coefficient of PVA is not very stable. The water activity coefficient shows the opposite tendency. Temperature does not seem to have a significant effect on the composition of starch and PVA, from the calculation obtained the starch composition of 0.01045 - 0.15325 and PVA 0.38407 - 0.23860. Likewise, water shows that the heating temperature does not really affect the composition of the water. The calculation of the balance of the mixture is carried out to get the right composition for the mixture of starch, PVA and water to form a perfectly mixed mixture. The results of calculating the composition in equilibrium are shown in the ternary diagram. The diagram shows a single-phase graph, where if a mixture containing 2 components dissolves completely, it will form a single-phase region.","PeriodicalId":104683,"journal":{"name":"Journal of Bioprocess, Chemical and Environmental Engineering Science","volume":"79 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129777200","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

Pembuatan Briket Kalori Tinggi Menggunakan Limbah Pulp dan Tempurung Kelapa Sebagai Cofiring dengan Campuran Limbah Sludge CPO Sebagai Bahan Perekat 高热量颗粒的生产使用纸浆和椰子壳废物作为粘合剂与污泥CPO混合物混合进行合成

Journal of Bioprocess, Chemical and Environmental Engineering Science Pub Date : 2020-11-30 DOI: 10.31258/jbchees.1.2.25-38

Michael Tanuwijaya, Idral Amri, Zultiniar

{"title":"Pembuatan Briket Kalori Tinggi Menggunakan Limbah Pulp dan Tempurung Kelapa Sebagai Cofiring dengan Campuran Limbah Sludge CPO Sebagai Bahan Perekat","authors":"Michael Tanuwijaya, Idral Amri, Zultiniar","doi":"10.31258/jbchees.1.2.25-38","DOIUrl":"https://doi.org/10.31258/jbchees.1.2.25-38","url":null,"abstract":"Indonesia is one of the largest paper producing and exporting countries in the world. Along with the increase in paper production causes an increase in solid waste originating from the reject pulp. The reject pulp has the potential to produce energy because it still contains high cellulose content of around 85.16% which is able to support the provision of usable and environmentally friendly fuel. The purpose of this study was to use of reject pulp as fuel in the form of briquettes by mixing coconut shell charcoal as cofiring and CPO sludge as an adhesive. The beginning of in this research is pretreatment of raw material samples and quality testing such as coconut shells which go through the authoring process using the torefaction process with temperature variations of 275 ° C and 300 ° C which are then mashed and reject the pulp through a washing and drying process in an oven which is then processed. form into briquettes with a variety of composition of reject pulp and coconut shell charcoal cofiring from 80%: 0%, 20%: 60%, 30%: 50%, 50%: 30%, 60%: 20%, and 0%: 80% , for adhesive 20% while 90%: 0%, 30%: 60%, 40%: 50%, 50%: 40%, 60%: 30%, 70%: 20% and 90%: 0% for adhesive 10 % of the total briquette weight which is ± 2 grams. The briquettes that have been form must qualified to the quality standards of SNI for wood charcoal (No.1 / 6235/2000) where after being tested only a few compositions have qualified the standards, for the reject pulp composition and coconut shell charcoal cofiring from 0:90, 30:60 40:50 with an adhesive composition of 10% and a composition of 0:80, 20:60, 30:50 with an adhesive composition of 20%, with the highest calorific value of 5274 cal/g, moisture content of 5.37%, and ash content of 2.65%.","PeriodicalId":104683,"journal":{"name":"Journal of Bioprocess, Chemical and Environmental Engineering Science","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120988691","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