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The Effect of Drying on Anthocyanin Content and Antioxidant Activity in Red Cabbage and White Cabbage 干燥对红甘蓝和白甘蓝花青素含量及抗氧化活性的影响
Pub Date : 2023-01-24 DOI: 10.14710/reaktor.22.3.86-91
Rahmat Efendi, Rahmandika Irfan Pradana, Luthfi Kurnia Dewi, C. Cahyani
Red cabbage and white cabbage contain several beneficial compounds, such as anthocyanins that can scavenge free radicals. The study aimed to determine the effect of drying on anthocyanin content and antioxidant activity in red cabbage and white cabbage. Each cabbage will be given two pretreatments, namely: (1) drying, and (2) without drying. Maceration extraction using a mixture of water and methanol 50:50 (v/v) acidified with 7% citric acid with a liquid to solid mass ratio of 1:4 (w/v) and with a controlled temperature of 60°C for a period of 1 h. Cabbage extract was examined for anthocyanin content by differential pH method and antioxidant activity was tested by DPPH method. The results showed anthocyanin content in crude fresh red cabbage extract 64.124 mg/L, crude dried red cabbage extract 210.74 mg/L, crude fresh white cabbage extract 0.445 mg/L, crude dried white cabbage extract 0.584 mg/L. The antioxidant activity (IC50) of crude fresh red cabbage extract, crude dried red cabbage extract, crude fresh white cabbage extract, and crude dried white cabbage extract were 54,317 ppm, 49,464 ppm, 131,878 ppm, and 107,069 ppm, respectively. The optimum results were crude dried red cabbage extract with a yield of 25.2%, anthocyanin content of 210.74 mg/L, IC50 value of 49.464 ppm. 
红卷心菜和白卷心菜含有几种有益的化合物,比如可以清除自由基的花青素。研究了干燥对红甘蓝和白甘蓝花青素含量和抗氧化活性的影响。每个白菜将进行两次预处理,即:(1)干燥和(2)不干燥。采用水与甲醇50:50 (v/v)的混合物浸渍提取,用7%柠檬酸酸化,液固比为1:4 (w/v),控制温度为60℃,浸渍提取1 h。用差pH法测定白菜提取物的花青素含量,用DPPH法测定其抗氧化活性。结果表明:鲜红甘蓝粗提物花青素含量为64.124 mg/L,干红甘蓝粗提物含量为210.74 mg/L,鲜白甘蓝粗提物含量为0.445 mg/L,干白甘蓝粗提物含量为0.584 mg/L。鲜红甘蓝粗提物、干红甘蓝粗提物、鲜白甘蓝粗提物和干白甘蓝粗提物的抗氧化活性(IC50)分别为54,317 ppm、49,464 ppm、131,878 ppm和107,069 ppm。最优结果为红甘蓝干粗提物得率为25.2%,花青素含量为210.74 mg/L, IC50值为49.464 ppm。
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引用次数: 0
KINETICS OF ADSORPTION OF HEAVY METALS (IRON) FROM TEXTILE INDUSTRY WASTE USING CALCIUM CARBIDE RESIDUE AS ADSORBENT 电石渣作为吸附剂对纺织废渣中重金属(铁)的吸附动力学研究
Pub Date : 2023-01-24 DOI: 10.14710/reaktor.22.3.102-112
M. A. Karim, Netty Herawati, Henny Juniar
This research was conducted to study the efficiency of residual calcium carbide as an adsorbent using a batch process to remove iron (II) from textile industrial waste. In this study, the iron (II) content in textile industrial waste was synthetically made using . The effluent was characterized using a standard method (atomic absorption spectrometry), while the functional groups responsible for the Adsorption of iron to the surface of the calcium carbide residue were observed using SEM and Fourier Transform Infra-red (FTIR). The SEM findings revealed a highly porous morphology. FTIR revealed the presence of various functional groups (OH, CH, C=C, and C-C). Factors affecting Adsorption, eg, contact time, adsorbent dose, pH, and iron concentration, were also studied. The maximum iron (II) ion adsorption was observed to occur at pH 6. Kinetic studies showed a good correlation and best suited the pseudo-second-order kinetic model. Langmuir and Freundlich's isotherm model was used to describe the Adsorption of iron (II) on calcium carbide residues. The data obtained from the adsorption process most closely matched the Langmuir model with a correlation value of R^2 = 0.9959 and q_e=1.697 mg/g. with a pseudo-second-order kinetic model with a correlation coefficient value (R2), which is 0.9962 for an adsorbent mass of 7.5 g. The Adsorption of iron ions from textile wastewater synthesis solution using calcium carbide residues shows a physisorption mechanism.
采用间歇法研究了残余电石作为吸附剂对纺织工业废铁(II)的去除效果。本研究以纺织工业废料中的铁(II)含量为原料,利用。利用原子吸收光谱法对出水进行了表征,利用扫描电镜和傅里叶变换红外(FTIR)对电石渣表面吸附铁的官能团进行了观察。SEM结果显示其具有高度多孔的形貌。FTIR显示了各种官能团(OH, CH, C=C和C-C)的存在。研究了接触时间、吸附剂剂量、pH、铁浓度等因素对吸附性能的影响。pH值为6时,铁离子吸附量最大。动力学研究结果表明,两者具有良好的相关性,最适合拟二级动力学模型。采用Langmuir和Freundlich等温模型描述了铁(II)在电石渣上的吸附。吸附过程得到的数据与Langmuir模型最接近,相关值为R^2 = 0.9959, q_e=1.697 mg/g。吸附质量为7.5 g时,建立了准二级动力学模型,相关系数R2为0.9962。电石渣对纺织废水合成液中铁离子的吸附表现为物理吸附机制。
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引用次数: 0
Lactic acid fermentation of banana peel using Lactobacillus plantarum : Effect of substrate concentration, inoculum concentration, and various nitrogen sources 植物乳杆菌对香蕉皮的乳酸发酵:底物浓度、接种量和不同氮源的影响
Pub Date : 2023-01-24 DOI: 10.14710/reaktor.22.3.92-101
A. Abdullah, Yufrida Amalia
Semeru Banana peel is an organic waste that is exclusively utilized as animal feed and does not harm the environment. The primary component of banana peels is carbohydrates, which can be used as a substrate during the fermentation process to produce lactic acid. The fermentation of banana peel flour with Lactobacillus plantarum strain FNCC 0020 was the main focus of this investigation. Variations in the concentrations of the substrate and inoculum as well as the impact of the type of nitrogen on lactic acid concentration were investigated. According to research findings, the big banana peel contains 70.52% carbs, 5.68% soluble protein, 3.115% fat, 6.74% water, 2.395% ash, and 13.38% crude fiber. While the inoculum variable was 0.5% v/v and the best substrate concentration variable was 17.5% w/v, the best lactic acid concentrations were 5.401 g/L and 8.586 g/L, respectively, as determined by HPLC (High-Performance Liquid) analysis. Banana peel flour only includes a modest amount of nitrogen (0.8295%), sulfate (0.037 grams), phosphate (1.6105%), and vitamin B1 (0.2315%), so additional nitrogen sources must be added. The production of lactic acid is shown to increase with the addition of various forms of nitrogen, with ammonium sulfate and ammonium phosphate (2:1) producing the greatest yields of 9.781 g/L and 14.255 g/L, respectively, of lactic acid, which is lower than lactic acid from yeast extract.
香蕉皮是一种有机废物,专门用作动物饲料,不会危害环境。香蕉皮的主要成分是碳水化合物,在发酵过程中可以作为底物产生乳酸。利用植物乳杆菌菌株FNCC 0020发酵香蕉皮粉是本研究的重点。研究了底物浓度和接种量的变化以及氮的种类对乳酸浓度的影响。研究发现,大香蕉皮的碳水化合物含量为70.52%,可溶性蛋白质含量为5.68%,脂肪含量为3.115%,水分含量为6.74%,灰分含量为2.395%,粗纤维含量为13.38%。在接种量为0.5% v/v、底物浓度为17.5% w/v的条件下,乳酸的最佳浓度分别为5.401 g/L和8.586 g/L。香蕉皮粉只含有适量的氮(0.8295%)、硫酸盐(0.037克)、磷酸盐(1.6105%)和维生素B1(0.2315%),因此必须添加额外的氮源。乳酸的产量随着添加各种形式的氮而增加,其中硫酸铵和磷酸铵(2:1)的乳酸产量最高,分别为9.781 g/L和14.255 g/L,低于酵母提取物的乳酸产量。
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引用次数: 4
Self-Discharging and Corrosion Problems in Vanadium Redox Flow Battery 钒液流电池的自放电与腐蚀问题
Pub Date : 2023-01-24 DOI: 10.14710/reaktor.22.3.77-85
D. Hendriana, Mochamad Hamdan Aziz, Yohanes Acep Nanang Kardana, Muhamad Lutfi Rachmat, G. Baskoro, Henry Nasution
Vanadium redox flow battery (VRFB) has a potential for large energy storage system due to its independence of energy capacity and power generation. VRFB is known to have challenges of high price, corrosion problem and lower energy efficiency. In this work, VRFB prototype with all components from existing parts sold in the market has been assembled and tested. Estimated electrochemical reactions are discussed for initial charging process with Vanadium Pentoxide powder as initial state to obtain fully charged battery state with V2+ ion in anolyte and VO2 + ion in catholyte. Material corrosion testes were done by immersing the material in a Vanadium electrolyte and by using the material as a bipolar plate in the VRFB system. Immersion test showed that copper, steel, lead and zinc were corroded badly. In bipolar plate material test, stainless steel 316, aluminum and silver plates were corroded after some hours of electric charging process. Simple carbon plastic composites and 3-mm thickness graphite plates were tested in the bipolar plate material test and failed due to corrosion problem as well. In the VRFB prototype, corrosion problems occurred on brass nipples, polyurethane plastic pipes and porous silicone seals. Stronger plastic components and better quality of silicone seals are needed for VRFB. Significant finding of this study is possible spontaneous chemical reaction within anolyte tank as a potential of self-discharging reaction which other researchers have not identified. Also, another finding from this study is that good bipolar plate for VRFB is not easily available in the market.
钒氧化还原液流电池(VRFB)具有能量容量和发电的独立性,在大型储能系统中具有很大的应用潜力。VRFB存在价格高、腐蚀问题和能源效率低等问题。在这项工作中,VRFB原型机的所有部件都来自于市场上销售的现有部件,并进行了组装和测试。讨论了以五氧化二钒粉末为初始状态的初始充电过程中电化学反应的估计,以获得阳极液中有V2+离子,阴极液中有VO2 +离子的完全充电电池状态。通过将材料浸泡在钒电解液中并将材料用作VRFB系统中的双极板来进行材料腐蚀测试。浸渍试验表明,铜、钢、铅、锌腐蚀严重。在双极板材料试验中,316不锈钢板、铝板和银板在经过几个小时的充电过程后出现腐蚀。简单碳塑复合材料和3mm厚石墨板在双极板材料试验中也因腐蚀问题失败。在VRFB原型中,腐蚀问题发生在黄铜接头、聚氨酯塑料管和多孔硅胶密封件上。VRFB需要更坚固的塑料部件和更好质量的硅胶密封件。本研究的重要发现是在阳极液罐中可能发生自发化学反应,这是其他研究人员尚未发现的自放电反应的潜力。此外,本研究的另一个发现是,用于VRFB的良好双极板在市场上并不容易获得。
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引用次数: 0
Edible Film Modification Based-on Mucuna Pruriens with Crosslink Method Incorporated with Gelatin, Sodium Alginate, and Green Tea Extract 明胶、海藻酸钠、绿茶提取物交联法改性茯苓多糖食用膜的研究
Pub Date : 2023-01-24 DOI: 10.14710/reaktor.22.3.113-121
N. Handayani, Laurensia Belinda Soewito, Alfan Fatir F, Ignatia Novita T, T. S
Health and environmental problems related to plastic food packaging are general problems. Edible film as food packaging from organic and edible materials can be a solution by increasing its structure and content. Modification of edible film from the protein of Velvet bean (Mucuna pruriens) with gelatin and alginate to modify the structure of the film and the addition of green tea leaf extract as an antioxidant. Edible films are made by combining constituent materials with the addition of a crosslink method. The addition of green tea leaf antioxidant concentration on nutritional properties, chemical properties, and shelf life of edible films through the DPPH method and antimicrobial tests showed good changes. The addition of gelatin, alginate, and green tea leaves to the mechanical and morphological properties of the film showed good indications. The effect before and after the addition of green tea leaves on the chemical structure of the edible film (OH‑ group) using FTIR analysis shows indications through changes in spectra. Modified velvet bean film with gelatin, alginate, and green tea leaves can potentially be applied in the food industry as food packaging.
与塑料食品包装有关的健康和环境问题是普遍问题。可食用薄膜作为食品包装的有机和可食用材料可以通过增加其结构和含量来解决。用明胶和海藻酸盐对丝绒豆蛋白的食用膜进行改性,并添加绿茶叶提取物作为抗氧化剂。可食用薄膜是通过添加交联方法将组成材料组合而成的。通过DPPH法和抗菌试验,添加抗氧化剂浓度对绿茶叶的营养特性、化学特性和食用膜的保质期均显示出良好的变化。明胶、海藻酸盐和绿茶的加入对薄膜的力学和形态性能都有良好的影响。用FTIR分析绿茶加入前后对可食性薄膜(OH -基团)化学结构的影响,通过光谱变化显示出迹象。以明胶、海藻酸盐和绿茶叶为原料的丝绒豆改性膜,可作为食品包装应用于食品工业。
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引用次数: 0
Sedimentation Process of TiO2 Nanoparticles in Aqueous Solution TiO2纳米颗粒在水溶液中的沉积过程
Pub Date : 2022-08-30 DOI: 10.14710/reaktor.22.2.70-78
D. Ariyanti, A. Purbasari, Dina Lesdantina, E. Saputro, Wei Gao
TiO2 nanoparticles, a semiconductor photocatalyst is widely used in various applications especially for water treatment. The common problems for the application are separating the nanoparticles from the water body and recovering it to be reused. This research was conducted to investigate the aggregation and sedimentation properties of TiO2 nanoparticles via chemical addition. The experiment was carried out for 5 hours by varying the pH, ionic strength, and the addition of organic matter such as rhodamine B, methylene orange, and humic acid. The results indicate that pH and ionic strength greatly affect the TiO2 sedimentation process. Sedimentation can be formed properly when the solution is at pH 1 and 14, this happens because pH is close to the isoelectric point. Meanwhile, ionic strength with a concentration of 0.1 M gave the most optimal results in TiO2 sedimentation. In the presence of ionic strength with the appropriate concentration, the thickness of the electrical double layer particles can be reduced so the attractive force increases and sedimentation occur. Meanwhile, in the presence of organic matter, rhodamine B, methylene orange, and humic acid did not significantly affect the formation of TiO2 sedimentation.Keywords: titanium dioxide, sedimentation, ionic strength, isoelectric point, water treatment
二氧化钛纳米粒子是一种半导体光催化剂,在水处理领域有着广泛的应用。该应用程序的常见问题是将纳米颗粒从水体中分离出来并将其回收再利用。本研究通过化学加成研究了TiO2纳米粒子的聚集和沉降性能。通过改变pH、离子强度、加入罗丹明B、亚甲基橙、腐植酸等有机物质,进行5小时的实验。结果表明,pH和离子强度对TiO2的沉积过程影响较大。当溶液的pH值为1和14时,沉淀可以适当地形成,这是因为pH值接近等电点。同时,离子强度浓度为0.1 M时TiO2沉降效果最佳。在适当浓度的离子强度存在下,双电层粒子的厚度可以减小,从而使吸引力增加并发生沉降。同时,在有机物存在的情况下,罗丹明B、亚甲基橙、腐植酸对TiO2沉淀的形成影响不显著。关键词:二氧化钛,沉降,离子强度,等电点,水处理
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引用次数: 0
The study of hydrothermal carbonization and activation factors' effect on mesoporous activated carbon production from Sargassum sp. using a multilevel factorial design 采用多水平因子设计研究水热炭化及活化因子对马尾藻生产介孔活性炭的影响
Pub Date : 2022-08-30 DOI: 10.14710/reaktor.22.2.59-69
T. Prakoso, H. Rustamaji, Daniel Yonathan, H. Devianto, P. Widiatmoko, J. Rizkiana, G. Guan
Seaweeds are large-scale multicellular marine algae categorized based on color as Chlorophyceae, Rhodophyceae, and Phaeophyceae. No information has been provided on the conditions affecting the production of mesoporous activated carbon from one member of the described aquatic plants, namely Sargassum sp. Therefore, this study aimed to determine the impact of the main factors and their interactions on Sargassum sp.-derived activated carbon manufactured (SAC) by hydrothermal carbonization and CO2 activation methods. A mathematical approach was employed using a multilevel factorial design with the main factors being the activator type (ZnCl2, CaCl2, & KOH), hydrothermal temperature (200, 225, & 250oC), and activator ratios (2 & 4). Meanwhile, the response variables were yield and BET surface area (SBET) of SAC. Morphological, functional, crystallographic, and porosity characterization was carried out on the samples. The SAC-Ca-200-2 sample had the highest yield, with the value being 26.5 percent of weight. The activators having the highest specific surface area (SBET) were SAC-Zn-250-4, SAC-Ca-225-2, and SAC-K-250-2, with 1552, 1368, and 1799 m2/g, respectively. The pore size distribution in SAC products ranged from 2.16 to 10 nm in diameter. The analysis conducted indicated the activator type and interaction with its ratio substantially impacted the SAC yield value; besides, only the activator type affects the formation of high surface area pores.
海藻是一种大规模的多细胞海洋藻类,根据颜色分为绿藻科、红藻科和褐藻科。水生植物马尾藻(Sargassum sp.)生产介孔活性炭的条件尚未得到相关信息。因此,本研究旨在确定主要因素及其相互作用对水热炭化和CO2活化法制备马尾藻衍生活性炭(SAC)的影响。以活化剂类型(ZnCl2、CaCl2和KOH)、水热温度(200、225和250℃)和活化剂配比(2和4)为主要影响因素,采用多因子设计,以SAC收率和BET表面积(SBET)为响应变量。对样品进行了形态、功能、晶体学和孔隙度表征。SAC-Ca-200-2样品的产率最高,为重量的26.5%。比表面积(SBET)最高的活化剂是SAC-Zn-250-4、SAC-Ca-225-2和SAC-K-250-2,分别为1552、1368和1799 m2/g。SAC产品的孔径分布范围为直径2.16 ~ 10 nm。分析表明,活化剂类型及其与活化剂配比的交互作用对SAC产量值有显著影响;此外,只有活化剂类型影响高表面积孔隙的形成。
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引用次数: 2
The influence of various substrates on power generation in the operation of yeast microbial fuel cells 酵母微生物燃料电池运行中各种基质对发电的影响
Pub Date : 2022-08-18 DOI: 10.14710/reaktor.22.2.36-41
M. Christwardana, J. Joelianingsih, Linda Aliffia Yoshi
Several carbon substrates were tried, including glucose commercial, pro analysis glucose, commercial sugar, and yeast extract - peptone - d glucose (YPD) medium to improve the efficiency of the single chamber microbial fuel cell (MFC). The power production of various electron donors was investigated using baker yeast Saccharomyces cerevisiae. Voltage and power density generation were used to establish the pattern of substrate use. In addition, electrochemical analysis of the anodic biofilm was performed. S. cervisiae was shown to successfully consume YPD medium by anode respiration with a higher power density of 18.40±1.98 mW/m2, followed by pro analysis glucose (9.41±1.15 mW/m2), commercial glucose (1.30±0.10 mW/m2), and commercial sugar (0.04±0.01 mW/m2). Furthermore, a clear relationship was established between power density generating rate and voltage output. Voltages produced were 0.16±0.02 V, 0.13±0.03 V, 0.03±0.01 V, 0.01±0.00 V for YPD medium, pro analysis glucose, commercial glucose, and commercial sugar, respectively in MFC. The weight of biofilm indicated that yeast attachment was significantly more common in YPD medium than in other MFC-operated media. This study discovered that the substrate type in the anodic compartment regulates the formation of anodic biofilm.
为了提高单室微生物燃料电池(MFC)的效率,研究了几种碳底物,包括商品葡萄糖、原分析葡萄糖、商品糖和酵母提取物-蛋白胨- d葡萄糖(YPD)培养基。以酿酒酵母为原料,研究了不同电子供体的产能。电压和功率密度的产生被用来建立衬底的使用模式。此外,还对阳极生物膜进行了电化学分析。结果表明,鸢尾花通过阳极呼吸消耗YPD培养基的功率密度最高,为18.40±1.98 mW/m2,其次是前分析葡萄糖(9.41±1.15 mW/m2)、商品葡萄糖(1.30±0.10 mW/m2)和商品糖(0.04±0.01 mW/m2)。此外,在功率密度、发电速率和输出电压之间建立了明确的关系。在MFC中,YPD培养基、前分析葡萄糖、商品葡萄糖和商品糖产生的电压分别为0.16±0.02 V、0.13±0.03 V、0.03±0.01 V、0.01±0.00 V。生物膜的重量表明,酵母附着在YPD培养基中比在其他mfc操作的培养基中更常见。本研究发现,阳极室的底物类型调控着阳极生物膜的形成。
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引用次数: 0
Cellulose Nanofibers from Regenerated Cellulose fibers of Cigarette Butts and Application in Pickering Emulsion 烟头再生纤维素纤维制备纳米纤维素纤维及其在酸洗乳剂中的应用
Pub Date : 2022-08-18 DOI: 10.14710/reaktor.22.2.49-58
P. Amanda, N. Masruchin, Anita Amelia
Cellulose nanofibers (CNF) have been applied in various applications due to the abundant raw materials and excellent mechanical and thermal properties. In this work, CNF from Cigarette butts (CNF-CB) was used as emulsion stabilized for oil in water emulsion. CNF was prepared from regenerated cellulose fibers that were produced by deacetylation of Cigarette butts waste using autoclave and then hydrolysis by chemical treatment using sulfuric acid. The FTIR spectra of CNF-CB showed chemically convert from Cigarette butts waste, indicating removal of the acetyl group. TEM micrographs showed nanocellulose with diameters of 8-32.30 nm. XRD analysis shows that the CNF-CB is a cellulose II allomorph with a crystallinity index of about 88.04%. Thermogravimetric analysis showed high char residue for the nanocellulose compared to raw fibers. The addition of CNF-CB with a concentration of 0.5% into the oil-in-water emulsion (O/W) showed better stability than commercial surfactant. In conclusion, this approach offers a promising strategy for upcycling cigarette butts waste to produce nanocellulose, which could be used in various applications.
纤维素纳米纤维(CNF)由于其丰富的原料和优异的力学性能和热学性能而得到了广泛的应用。本研究以烟头CNF (CNF- cb)为乳化液稳定剂,对水乳液中的油进行稳定。以烟头废渣经高压灭菌法脱乙酰,再经硫酸化学水解制备再生纤维素纤维为原料制备CNF。CNF-CB的FTIR光谱显示了烟头废物的化学转化,表明乙酰基被去除。TEM显微图显示纳米纤维素的直径为8 ~ 32.30 nm。XRD分析表明,CNF-CB为纤维素II异形体,结晶度指数约为88.04%。热重分析表明,纳米纤维素的炭渣比原纤维高。在油水乳液(O/W)中加入0.5%浓度的CNF-CB,其稳定性优于工业表面活性剂。总之,这种方法提供了一种很有前途的策略,可以对烟头废物进行升级回收,以生产纳米纤维素,这种纤维素可以用于各种应用。
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引用次数: 0
Comparison of Different Volume Reactor for Batik Wastewater Pre-Treatment with Ozonation to Improve Biodegradability 不同体积反应器臭氧化预处理蜡染废水提高可生化性的比较
Pub Date : 2022-08-18 DOI: 10.14710/reaktor.22.2.42-48
E. Sofiyah, I. Septiariva, Q. Helmy., S. Notodarmojo, W. K. Suryawan
Batik is a unique ethnic and heritage textile from Indonesia with low biodegradability (BOD5/COD) and demanding biological wastewater treatment. However, in its application a high biodegradability value is needed. To increase biodegradability the ozonation process can be used as pre-treatment. The purpose of this study is to determine the effectiveness of ozone pre-treatment in color removal, COD removal, and changes in biodegradability. This study was divided into two types of the reactor with a volume of 2 L and 16 L with each dose of 4 mg/min and 40 mg/min. The results of color removal in the reactor with a volume of 2 L showed a value of 85% for color removal and 34.6% for COD removal. The reduction in efficiency occurred in the color removal to 65% in reactor 16 L. The removal of COD with a volume of 16 L was not evenly distributed at each altitude of 43; 35; and 33% (50; 100; 150 cm). Biodegradability increased from 0.143 to 0,49 (2L reactor) and 0.4-0.45 (16L reactor), this allows for the application of higher biological wastewater treatment. Which the NH3-N and total phenol removal efficiencies of 12.9%-31.4% and 3-21.2%, respectively.
蜡染是印度尼西亚独特的民族和传统纺织品,具有低生物可降解性(BOD5/COD)和要求生物废水处理。然而,在其应用中,需要具有较高的生物降解价值。为提高生物可降解性,可采用臭氧化预处理。本研究的目的是确定臭氧预处理在去除颜色、去除COD和生物降解性变化方面的有效性。本研究分为两种反应器,体积分别为2 L和16 L,剂量分别为4 mg/min和40 mg/min。在体积为2l的反应器中,去色率为85%,COD去除率为34.6%。16l反应器除色效率下降至65%,体积为16l的COD去除率在43的各高度分布不均匀;35;33% (50;100;150厘米)。生物降解率从0.143提高到0.49 (2L反应器)和0.4-0.45 (16L反应器),这允许应用更高的生物废水处理。其中NH3-N和总酚的去除率分别为12.9% ~ 31.4%和3 ~ 21.2%。
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引用次数: 0
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