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Analisis Pengaruh Variasi Ukuran Partikel Ferronickel Terhadap Proses Leaching Ferronickel Produk Dari Mini Blast Furnace Terhadap Recovery, Komposisi Kimia, Dan Senyawa NiSO4.6H2O
No full textPermintaan nikel setiap tahun mengalami peningkatan. Salah satu kegunaan nikel adalah sebagai bahan utama pembuatan katodad dalam baterai Nickel Manganese Cobalt (NMC). Senyawa Nickel (II) Sulphate Hexahydrate (NiSO4.6H2O) dibutuhkan dalam pembuatan baterai NMC. Nickel laterit dipilih sebagai bahan baku utama dalam penelitian ini. Nikel laterit dapat diproses melalui dua metode pirometalurgi dan hidrometalurgi. Produk dari pirometalurgi pada ore nikel laterit adalah ferronickel yang akan dilakukan proses leaching. Penelitian ini bertujuan untuk menganalisis pengaruh variasi ukuran partikel ferronickel yang digunakan pada proses leaching terhadap recovery Fe, Ni, dan Co untuk sintesis NiSO¬4.6H2O yang terbentuk dengan variasi ukuran partikel -50 µm, +50 -80 µm, dan +80 -112 µm. ferronickel dilakukan proses leaching dengan H2SO4. Variabel terbaik pada proses leaching adalah pada -50 µm. Proses selanjutnya adalah proses netralisasi yang bertujuan untuk mengikat logam pengotor yaitu Fe. Larutan hasil leaching direaksikan dengan NaOH 2,5 M hingga pH 6. Setelah itu, dilakukan proses kristalisasi untuk mendapatkan produk akhir yaitu NiSO4.6H2O. Persentase ekstraksi nikel tetrtinggi terdapat pada variabel -50 µm dengan persentase ekstraksi sebesar 98,19%. Kadar nikel tertinggi terdapat pada variabel -50 µm sebesar 13,1433%. Pada produk kristalisasi ditemukan pengotor berupa senyawa FeSO4 dan Na2SO4. Hal ini menandakan bahwa proses netralisasi masih belum berjalan dengan maksimal. Nilai recovery nikel tertinggi didapatkan sebesar 83,79% pada variabel -50 µm.
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Nickel demand is increasing every year. One of the uses of nickel is as the main ingredient in the manufacture of cathode in Nickel Manganese Cobalt (NMC) batteries. Nickel (II) Sulphate Hexahydrate (NiSO4.6H2O) compounds are needed in the manufacture of NMC batteries. Nickel laterite was selected as the main raw material in this study. Nickel laterite can be processed through two pyrometallurgical and hydrometallurgical methods. The product of pyrotechnics in nickel laterite ore is ferronickel which will be done leaching process. This study aims to analyze the influence of ferronickel particle size variations used in the leaching process on Fe, Ni, and co recovery for the synthesis of NiSO4.6H2O formed with variations in particle size of -50 μm, +50 -80 μm, and +80 -112 μm. ferronickel is carried out leaching process with H2SO4. The best variable in the leaching process is at -50 μm. The next process is a neutralization process that aims to bind the Fe. The leaching solution is reacted with NaOH 2.5 M to pH 6. After that, the crystallization process is carried out to obtain the final product, NiSO4.6H2O. The highest percentage of nickel extraction is in variable -50 μm with an extraction percentage of 98.19%. The highest nickel content was in the variable -50 μm at 13.1433%. In crystallization, products found impurities in the form of compounds FeSO4 and Na2SO4. This indicates that the neutralization process is still not running to the maximum. The highest nickel recovery value was obtained at 83.79% on the variable -50 μm
THE ROLE OF LEXICAL FREQUENCY IN MODERATING THE EFFECT OF GRAMMAR KNOWLEDGE ON L2 READING OUTCOMES
Get PDFSentence-level grammar skills are of the important foundations in the mastery of reading skills in second language (L2). Previous studies showed inconclusive findings about the effect of grammar knowledge on L2 reading. This study examines the relationship between L2 reading outcomes and reader-based grammar knowledge as it is moderated by text-based features of vocabulary difficulty. Participants were EFL students (n = 71) in the second year of their English major at an Indonesian university. The participants' grammar knowledge was measured using a test of sentence-level grammatical knowledge. Text-based vocabulary difficulty was assessed using VocabProfile software (Cobb, 2010). During the data collection period, the participants completed four reading texts, each reflecting a unique combination of two levels (high vs. low) of lexical frequency. This study reveals that reader grammar knowledge influenced L2 reading outcomes. It also shows that text vocabulary difficulty significantly moderated the relationship between reader grammatical knowledge and L2 reading, indicating that the relationship between grammar knowledge and L2 reading for high lexical frequency texts was significantly greater than for low lexical frequency texts
Implementasi Akuntansi Lingkungan (Environmenal Accounting) sebagai Upaya Penanggulangan Limbah (Studi pada PT. Perkebunan Nusantara XIV)
Get PDFHasil dari penelitian ini adalah perusahaan dalam mengakui biaya lingkungan dimasukkan sebagai komponen biaya produksi dengan pertimbangan bahwa limbah timbul sebagai akibat dari proses produksi. Perusahaan dalam mengukur dan menilai biaya lingkungan sebesar kos yang dikeluarkan (Historical
Cost) dan disajikan bersama-sama dengan biaya-biaya yang sejenis dalam laporan keuangan dan informasi mengenai biaya lingkungan diungkapkan dalam catatan atas laporan keuangan perusahaan
Madurese World View and Life Attitude: Literary analysis on Madurese Modem Short Stories collected by Haryadi, et.al
No full textABSTRACT
This paper concerns with Madurese world view and life attitude. The main, reason of this study is that Madurese world view and life attitude are still not much known for many people outside Madura. They still consider that Madurese life is a rude culture with the violence and the horrifying tradition inside such as Carok, bull race and so on. However, it is still significant that Madurese life is still viewed as life of violence in which Madurese people are very rude in solving their life problem. This is the main reason why Madurese life is less researched by many researchers outside Madura, especially by foreign researchers. However, describing and explaining Madurese people for the other pcople outsidc■ is very significant. It is to inform and clarify that Madurese life is not the same as what they have been thinking up to now.
The major problem of this study is concerning what are Madurese world view and life attitude and its basic thought.
The objective of this study is to find out and describe Madurese world view and life attitude through Madurese modem short stories which are collected by Haryadi and his friend.
In order to understand and comprehend Madurese world view and life attitude, the writer takes the data source from Madurese modern literature, in the form of Madurese modem short stories by Haryadi, et. al. The reason to get the data from Madurese modern short stories is that they comprise a factual view and of Madurese life. However, the writer believes that Madurese world view and life attitude could be caught from its Madurese modem literature.
In analyzing this literature, the writer uses a descriptive-qualitative method, because he would like to describe the real condition existing in the data inductively and descriptively. While the approach used is sociological literary approach. The writer tries to find out Madurese world view and life attitude through the social context of Madurese modem literature. The technique of data collecting is structured and participato٢y observation. Whereas, data analysis technique is reflective analysis model. The writer describes data based on mature understanding and explain it descriptively.
Having analyzed the data, the writer finds out that Madurese world view and life attitude can be classified into four aspects. Those are relating to God, human being, the nature of life, and uni verse. Relating to God, Madurese people view 11 tat God is the owner and the supreme substance in this world. He is the creator of the universe and its content, especially human being. He has the power to do whatever he wants for his creature, especially for human life. They view that whatever the life condition that they are undergoing ,either poor or rich condition, they will accept it as it is entirely coming from God’s will. However, it is not surprising that Madurese life attitude appears that they are obeying and diligent in performing God’s order and avoiding his prohibition, and also accepting their life condition in their life tune (qona'ah and tawakal). Relating to human being, Madurese people view that they are social creature in this world. In this life, they have to help and interact each other, either poor or rich people. This perception has created the tradition of togetherness in Madurese life (royongan) and the harmonious social relation pattern (rokon) by their respecting each other (ngormat) with etiquette as the main principle behind this attitude (tatakrama). It means that they have to behave with etiquette without making someone else’s feeling hurt (andhap ashor). Because if they feel hurt with someone’s attitude, they will usually overcome it by fighting each other or what we call it as Carok. Furthermore, relating to their view to the nature of life, they view that they should accept this life as God has determined it. In spite of that, to be success in this life, they have to try and sacrifice to achieve it with hard work. Although they seem acceptance (qonaah) and submissive their life to God (pasrah), They are well known as smart and hard workers in any kind of job they are handling. The last one is Madurese world view and life attitude about the universe. They view that God creates the universe for themselves, as they are leaders of the universe ,kholifuh fit urdl’. They should take care and make it in balance. Moreover, they get the benefit of the universe to fulfill their daily life needs.
For suggestion, the ١vriler hopes that many other people outside Madura are willing to understand and comprehend Madurese world view and life attitude and its basic thought, so that they could communicate and interact with Madurese people correctly without any misunderstanding which could lead to conflict. For the next researchers, the writer suggests that they could continue this study through field research. It is to make this finding valid and reliable
An Analysis of Papuan Students’ Interest in Learning Moi Language using KMOIS Application (Indonesian Moi Dictionary) at Information Technology Education Major
Get PDFThis study aims to determine the interest in learning the MOI language of information technology education students using the KMOIS application (Indonesian Dictionary Moi). This study uses a descriptive qualitative approach. Data collection was carried out using interview, observation and documentation techniques. Data analysis used the Miles and Huberman model, namely data reduction, data display and conclusion drawing. The results showed that the interest in learning the Moi language of information technology education students from Papua was influenced by the difficulty of getting books about the Moi language and students thought that learning the Moi language was very difficult, so using the KMOIS application (Indonesian Dictionary of Moi) was very helpful in increasing students' interest in learning from Papua in learning the Moi languag
TEXTUAL SYNTACTIC COMPLEXITY AND ITS ROLE IN SECOND LANGUAGE READING OUTCOMES IN INDONESIA
No full textThis paper examines the role of syntactic complexity in L2 reading outcomes across different EFL proficiency levels in an Indonesian university. Indonesian university students (N = 148) at Intermediate and Advanced levels of proficiency read four English passages differing in syntactic complexity. The latter was measured by several widely used text modelling tools. Participants read two low and two high complexity texts and completed a post-test comprehension test. Syntactic complexity had a statistically significant but low magnitude effect size, accounting for 2%-5% of the variance of reading performance between the L2 English proficiency levels. There were also noticeable differences in text analysis measures across the different complexity tools. The usefulness of syntactic complexity as an isolated dimension of text complexity is evaluated. The contribution of this study to the field both in theory and practice is presented
THE USE POP SONG TO IMPROVE STUDENTS UNDERSTANDING OF THE SIMPLE PAST TENSE AT THE TENTH-GRADE OF SMK NEGERI 1 PALOPO
Get PDFABSTRACT
Sahiruddin, 2021, ’’The Using Pop Song to Improve Students Understanding Of
Simple Past Tense At The Tenth-Grade Of SMK Negeri 1
Palopo’’ English Language Education Study
ProgramTarbiyah And Teacher Training Faculty State
Islamic Institute Of Palopo, Supervisor by: (1) Dr. Hilal
Mahmud, M.M. and (2) Dewi Furwana, S.Pd.I., M.Pd.
This thesis attempted to find out the teaching simple past tense
used Pop Song of SMK Negeri 1 palopo, The research questions: the use of pop
song effective to improve students understanding of simple past tense at the tenth
grade of SMK Negeri 1 Palopo? And the objective of the research is to find out
whether or not using pop songs is effective to improve simple past tense at the
tenth-grade students of SMK Negeri 1 Palopo. This research used the pre�experimental method with pre-test and post-test design. The population of the
research includes students at the tenth-grade ADM of SMK Negeri 1 palopo, the
number population is 119 students in academic and the researcher used purposive
sampling which was taken from class X ADM 1 consist of 30 students as the
sample researcher. The treatments by using pop songs, it was found that the mean
score of post-test (67,00) was higher than the mean score of pre-test (43,67). it
could be concluded that the use of pop song is effective in improving the students
understand simple past tense to the tenth-grade students of SMK Negeri 1 palopo.
Keywords: Simple Past Tense, Pop Son
English Learning Motivation and Learning Practices in Indonesian Primary School Context: Parent and Teacher Perspectives
No full textTradition-responsive Approach as Non-medical Treatment in Mitigating the Covid-19 Pandemic in Tengger, East Java, Indonesia
No full text- …
