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All Journal EKSAKTA: Journal of Sciences and Data Analysis Jurnal Ilmu Lingkungan Jurnal Ilmu Lingkungan Jurnal Visi Ilmu Pendidikan Jurnal Pendidikan Sains Alchemy : Journal of Chemistry Agrointek Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Bioeksperimen: Jurnal Penelitian Biologi KOVALEN: Jurnal Riset Kimia Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan J-PEK (JURNAL PEMBELAJARAN KIMIA) JC-T (Journal Cis-Trans): Jurnal Kimia dan Terapannya Jurnal Preventia Jurnal Penelitian Sains Jurnal Ilmiah Peuradeun Sarwahita : Jurnal Pengabdian Kepada Masyarakat Fullerene Journal of Chemistry Jurnal Karinov Abdimas: Jurnal Pengabdian Masyarakat Universitas Merdeka Malang Jurnal Pengendalian Pencemaran Lingkungan (JPPL) Jurnal Graha Pengabdian SCIENCE : Jurnal Inovasi Pendidikan Matematika dan IPA Indonesian Journal of Multidisciplinary Science Jurnal Pengabdian Pada Masyarakat METHABDI Jurnal MIPA dan Pembelajarannya Journal of Innovation and Teacher Professionalism Sasambo: Jurnal Abdimas (Journal of Community Service)

Yudhi Utomo

Univeristas Negeri Malang

Author-ID : 2393091

Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Public Health Social Sciences Other

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Analisis Kesalahan Konsep Mahasiswa Kimia Pada Kajian Pokok Hidrolisis Garam Menggunakan Tes Pilihan Ganda Empat Tingkat Fikriyatul Maulidiyah; Hayuni Retno Widarti; Yudhi Utomo
Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan Vol 6, No 7: JULI 2021
Publisher : Graduate School of Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/jptpp.v6i7.14921

Abstract: This study purpose to analyze the misconceptions of second semester students on Salt Hydrolysis using a four-level multiple choice test. The method used is descriptive quantitative. The results of the research findings show that category of the highest concept understanding is 53.2%, not understanding the concept and the highest error is 12.71%, 17.29% and the highest misconception is 70.33% in the salt hydrolysis subsection. The analysis of items in each question indicator resulted in 30.50% of the highest misconceptions being on the indicator explaining the hydrolysis reaction based on the strength of the conjugate acid-base. Misconceptions were detected because students were unable to relate the prerequisite material to the acid-base material in the conjugate acid-base subsection according to Bronsted Lowry with the salt hydrolysis material they had just studied.Abstrak: Penelitian bertujuan untuk menganalisis kesalahan konsep mahasiswa semester II pada materi Hidrolisis Garam menggunakan tes pilihan ganda empat tingkat. Metode yang digunakan adalah deskriptif kuantitatif. Hasil temuan penelitian menunjukkan kategori paham konsep tertinggi sebanyak 53.2%, tidak paham konsep dan error tertinggi berturut-turut 12.71%, 17.29% dan miskonsepsi tertinggi 70.33% pada subbab hidrolisis garam. Analisis butir soal ditiap indikator soal menghasilkan 30.50% miskonsepsi tertinggi berada pada indikator menjelaskan reaksi hidrolisis berdasarkan kekuatan asam basa konjugasi. Miskonsepsi yang terdeteksi karena mahasiswa kurang dapat mengaitkan materi prasyarat pada materi asam basa di subbab asam basa konjugasi menurut Bronsted Lowry dengan materi hidrolisis garam yang baru dipelajari.

Efektivitas GDL (Guided Discovery Learning) dan Problem Solving terhadap KBK (Keterampilan Berpikir Kritis) dan HOTS (Higher Order Thingking Skills) Bina Aulia Mahfuzah; Munzil Munzil; Yudhi Utomo
Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan Vol 3, No 6: JUNI 2018
Publisher : Graduate School of Universitas Negeri Malang

Abstract: The objective of this study is to ascertain the effectiveness of ctitical thingking skills (KBK) dan Higher Order Thingking Skills (HOTS) students taught using GDL (Guided Discovery Learning) dan Problem Solving on acid base material. The samples of the study were two classes of eleventh grade at SMAN 5 Banjarmasin. Two tests, Watson-Glases critical thingking test and HOTS test developed by the reasercher were empolyed on those classes as the instruments to obtain the data needed. These instruments considered feasible as it had realibility value of 0,62 and 0,71 with medium categories. The result showed that there were differences in the effectiveness of KBK and HOTS in both reasearch classes.Abstrak: Penelitian ini bertujuan untuk mengetahui efektivitas keterampilan berpikir kritis (KBK) dan Higher Order Thingking Skills (HOTS) siswa yang dibelajarkan dengan model pembelajaran GDL (Guided Discovery Learning) dan Problem Solving pada materi asam basa. Sampel pada penelitian ini merupakan dua kelas di SMA Negeri SMAN 5 Banjarmasin. Instrumen yang digunakan terdiri atas tes KBK Watson-Glaser dan tes HOTS yang dikembangkan sendiri oleh peneliti. Reliabilitas instrumen 0,62 dan 0,71 dengan kategori sedang sehingga layak digunakan. Hasil penelitian menunjukkan terdapat perbedaan efektivitas KBK maupun HOTS pada kedua kelas penelitian.

PENGARUH PEMBELAJARAN INKUIRI TERBIMBING BERBANTUAN PETA KONSEP BERNUANSA GREEN CHEMISTRY TERHADAP KETERAMPILAN BERNALAR ILMIAH MAHASISWA PADA MATERI ANALISIS VOLUMETRI Roushandy Asri Fardani; Suhadi Ibnu; Yudhi Utomo
Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan Vol 2, No 12: Desember 2017
Publisher : Graduate School of Universitas Negeri Malang

The aim of this research were to know the effect of concept map-supported guided inquiry strategy nuanced with green chemistry to undergraduate student’s scientific reasoning skill of health analyst department on volumetric analysis matter. Sample interpretation in this research used cluster random sampling technique. Research design used was quasy experiment with pretest and posttest design. Campus Polytechnic of Medica Farma Husada had limited laboratory facilities and inadequate supplies of material so that learning in laboratory did not run well. Green chemistry was one of alternative used for solving problem of learning not only in class but also in laboratory especially. The result of research showed that learning used concept map-assisted guided inquiry strategy nuanced with green chemistry can develop undergraduate student’s scientific reasoning skill.Penelitian ini bertujuan untuk mengetahui pengaruh inkuiri terbimbing berbantuan peta konsep bernuansa green chemistry terhadap keterampilan bernalar ilmiah mahasiswa jurusan analis kesehatan pada materi analisis volumetri. Pengambilan sampel dalam penelitian ini menggunakan teknik cluster random sampling. Rancangan penelitian yang digunakan adalah Quasy Experiment dengan pretest dan posttest. Green chemistry merupakan salah satu alternatif yang digunakan untuk memecahkan masalah dalam proses pembelajaran di kelas maupun di laboratorium khususnya. Hasil penelitian menunjukkan bahwa pembelajaran yang menggunakan inkuiri terbimbing berbantuan peta konsep bernuansa green chemistry dapat mengembangkan keterampilan bernalar ilmiah mahasiswa.

Multimedia vs concrete model: Review of studies employing the tools in chemistry teaching Rooserina Kusumaningdyah; Habiddin Habiddin; Yudhi Utomo
J-PEK (Jurnal Pembelajaran Kimia) Vol 6, No 2 (2021): J-PEK (JURNAL PEMBELAJARAN KIMIA)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um026v6i22021p072

This paper describes previous studies regarding the use of multimedia or virtual model and concrete model to improve students’ understanding of chemistry. Thirty-three relevant papers in various topics, including stereochemistry, symmetry, chemical bonding, law conservation of matter, and others, were found and discussed. In particular, relevant studies in stereochemistry teaching is also discussed. REFERENCESAnggriawan, B. (2017). Pengaruh Pembelajaran Penemuan Terbimbing Berbantuan Multimedia terhadap Pemahaman Materi Simetri Mahasiswa dengan Kemampuan Spasial yang Berbeda. Universitas Negeri Malang.Beauchamp, P. S. (1984). “Absolutely” Simple Stereochemistry. Journal of Chemical Education, 61(8), 666. https://doi.org/10.1021/ed061p666Boukhechem, M.-S., Dumon, A., & Zouikri, M. (2011). The Acquisition of Stereochemical Knowledge by Algerian Students Intending to Teach Physical Sciences. Chemical Education Research and Practise, 12(3), 331–343. https://doi.org/10.1039/C1RP90040DChen, D., Chen, X., & Gao, W. (2013). The Application and Perspective of Multimedia Technology in Chemistry Experimental Instruction in China. Creative Education, 04(04), 241–247. https://doi.org/10.4236/ce.2013.44035Chen, D.-W., & Catrambone, R. (2014). Effects of Multimedia Interactivity on Spatial Task Learning Outcomes. Proceedings of the Human Factors and Ergonomics Society Annual Meeting, 58(1), 1356–1360. https://doi.org/10.1177/1541931214581283da Silva Júnior, J. N., Sousa Lima, M. A., Xerez Moreira, J. V., Oliveira Alexandre, F. S., de Almeida, D. M., de Oliveira, M. da C. F., & Melo Leite Junior, A. J. (2017). Stereogame: An Interactive Computer Game That Engages Students in Reviewing Stereochemistry Concepts. Journal of Chemical Education, 94(2), 248–250. https://doi.org/10.1021/acs.jchemed.6b00475Dayame, A. M. (2019). The Effects of Manipulative and Visual Models in Conceptualizing Fractions. International Journal of Advanced Research and Publications, 3(8), 80–85.Dori, Y. J., & Barak, M. (2001). Virtual and Physical Molecular Modeling: Fostering Model Perception and Spatial Understanding. Educational Technology & Society, 4(1), 61–74.Hakim, M. F., Maksum, A. H., Saragih, Y., & Hasanah, C. S. (2020). Analysis on the implementation of virtual versus reality laboratory. J-PEK (Jurnal Pembelajaran Kimia), 5(2), 59–65. https://doi.org/10.17977/UM026V5I22020P059Harrold, M. W. (1995). Computer-Based Exercises to Supplement the Teaching of Stereochemical Aspects of Drug Action1,2. American Journal of Pharmaceutical Education, 59, 20–26.Kirk, J. (2015). Using Manipulatives in The Chemisty Classroom as a Tool to Increase The Understanding and Knowledge of The Law of Conversation of Matter. St. John Fisher College: Fisher Digital Publications:Knowles, T. H. (2017). Using Eye-Tracking and Molecular Modelling to Explore Students’ Strategies for Solving Organic Stereochemical Problems. University of Northern Colorado.Koutalas, V. G., Antonoglou, L. D., Charistos, N. D., & Sigalas, M. P. (2014). Investigation of Students’ Ability to Transform and Translate 2D Molecular Diagrammatic Representations and its Relationship to Spatial Ability and Prior Chemistry Knowledge. Procedia - Social and Behavioral Sciences, 152, 698–703. https://doi.org/10.1016/j.sbspro.2014.09.265Lou, S.-J., & Lin, H.-C. (2012). Improving the Effectiveness of Organic Chemistry Experiments through Multimedia Teaching Materials for Junior High School Students. The Turkish Online Journal of Educational Technology, 11(2), 135–141.Muchson, M., Munzil, M., Winarni, B. E., & Agusningtyas, D. (2019). Pengembangan virtual lab berbasis android pada materi asam basa untuk siswa SMA. J-PEK (Jurnal Pembelajaran Kimia), 4(1), 51–65. https://doi.org/10.17977/UM026V4I12019P051O’Brien, M. (2016). Creating 3-Dimensional Molecular Models to Help Students Visualize Stereoselective Reaction Pathways. Journal of Chemical Education, 93(9), 1663–1666. https://doi.org/10.1021/acs.jchemed.6b00250Olimpo, J. T., Kumi, B. C., Wroblewski, R., & Dixon, B. L. (2015). Examining The Relationship Between 2D Diagrammatic Conventions and Students’ Success on Representational Translation Tasks in Organic Chemistry. Chemistry Education Research and Practice, 16(1), 143–153. https://doi.org/10.1039/C4RP00169AOlkun, S. (2003). Comparing Computer versus Concrete Manipulatives in Learning 2D Geometry. Journal of Computers in Mathematics and Science Teaching, 22(1), 43–56. https://doi.org/10.1501/0000984Sentongo, J., Kyakulaga, R., & Kibirige, I. (2013). The Effect of Using Computer Simulations in Teaching Chemical Bonding: Experiences with Ugandan Learners. International Journal of Education Science, 5(4), 433–441.Sevi̇Nç, B. (2010). The Effect Of Computer Based Instruction Enhanced With Concept Maps On Students’ Understanding Of Stereochemistry. International Conference on New Trends in Education and Their Implications, 301–306.Stieff, M., Bateman, R. C., & Uttal, D. H. (2005). Teaching and Learning with Three-dimensional Representations. In J. K. Gilbert (Ed.), Visualization in Science Education (pp. 93–120). Springer Netherlands. https://doi.org/10.1007/1-4020-3613-2_7Stieff, M., Scopelitis, S., Lira, M. E., & Desutter, D. (2016). Improving Representational Competence with Concrete Models. Science Education, 100(2), 344–363. https://doi.org/10.1002/sce.21203Stull, A. T., Barrett, T., & Hegarty, M. (2013). Usability of Concrete and Virtual Models in Chemistry Instruction. Computers in Human Behavior, 29(6), 2546–2556. https://doi.org/10.1016/j.chb.2013.06.012Stull, A. T., Hegarty, M., Dixon, B., & Stieff, M. (2012). Representational Translation With Concrete Models in Organic Chemistry. Cognition and Instruction, 30(4), 404–434. https://doi.org/10.1080/07370008.2012.719956Thayban, T., Habiddin, H., & Utomo, Y. (2020). Concrete Model VS Virtual Model: Roles and Implications in Chemistry Learning. J-PEK (Jurnal Pembelajaran Kimia), 5(2), 90–107. https://doi.org/10.17977/UM026V5I22020P090Thayban, T., Habiddin, H., Utomo, Y., & Muarifin, M. (2021). Understanding of Symmetry: Measuring the Contribution of Virtual and Concrete Models for Students with Different Spatial Abilities. Acta Chimica Slovenica, 68(3). https://doi.org/10.17344/acsi.2021.6836

Concrete Model VS Virtual Model: Roles and Implications in Chemistry Learning Thayban Thayban; Habiddin Habiddin; Yudhi Utomo
J-PEK (Jurnal Pembelajaran Kimia) Vol 5, No 2 (2020): J-PEK (JURNAL PEMBELAJARAN KIMIA)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um026v5i22020p090

Mastering the topic of symmetry requires a good representational competence to smoothly understand, visualize, and manipulate the movement of three-dimensional objects. This literature study aimed to describe how concrete and virtual media can be utilized in improving students’ understanding of the topic. The study implies that the thinking process, cognitive tasks, interactions, mental models, and the completeness features displayed by the two models in identifying all symmetrical operations are the distinguishing factors of the effectiveness of the two formats in affecting students’ understanding. The study also implies that the virtual format will contribute to students’ understanding better than the concrete format does. However, the empirical study must be explored further to ensure the difference between the two formats.

Interactive Instructional: Theoretical Perspective and Its Potential Support in Stimulating Students’ Higher Order Thinking Skills (HOTS) Rafika Fauzia Ulfa; Habiddin Habiddin; Yudhi Utomo
J-PEK (Jurnal Pembelajaran Kimia) Vol 6, No 1 (2021): J-PEK (JURNAL PEMBELAJARAN KIMIA)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um026v6i12021p001

In this disruptive era, the success of teaching approaches that encourage students’ creativity and innovation is presented in students’ attained high-order thinking skills (HOTS). Consequently, the attainment of HOTS aids someone to avert negative things since they are capable of analyzing and evaluating their obtained information. Besides, HOTS also facilitates the process of students attaining knowledge, generating questions, properly interpreting information, and drawing a conclusion for an issue, with solid reasons, an open mind, and an effective means to communicate it. This article presents a theoretical study on the interactive instructional learning model and identifies its potential in accelerating students’ HOTS. It aims to introduce the interactive instructional model in chemistry learning. Further, this model can be adopted in a study with a more intensive evaluation of its empirical contribution to chemistry learning. The learning syntax for this model has been formulated for the Basic Chemistry Class 1.ReferencesBrookhart, S. M. (2010). How To Assess Higher Order thinking Skills in your classroom. Alexandria.Fearon, D. D., Copeland, D., & Saxon, T. F. (2013). The Relationship Between Parenting Styles and Creativity in a Sample of Jamaican Children. Creativity Research Journal, 25(1), 119–128. https://doi.org/10.1080/10400419.2013.752287Ghani, I. . B. ., Ibrahim, N. ., Yahaya, N. ., & Surif, J. (2017). Enhancing students’ HOTS in laboratory educational activity by using concept map as an alternative assessment tool. Chemistry Education Research and Practice, 18(4), 849–874. https://doi.org/10.1039/C7RP00120GHabiddin, H., & Page, E. M. (2020). Probing Students’ Higher Order Thinking Skills Using Pictorial Style Questions. Macedonian Journal of Chemistry and Chemical Engineering, 39(2), 251–263. https://doi.org/10.20450/mjcce.2020.2133Habiddin, H., & Page, E. M. (2021). Examining Students’ Ability to Solve Algorithmic and Pictorial Style Questions in Chemical Kinetics. International Journal of Science and Mathematics Education, 19(1), 65–85. https://doi.org/10.1007/s10763-019-10037-wHabiddin, H., & Page, E. M. (2018). Measuring Indonesian chemistry students’ Higher Order Thinking Skills (HOTS) in solving chemical kinetics questions. In Y. Rahmawati & P. C. Taylor (Eds.), Empowering Science and Mathematics for Global Competitiveness; Proceedings of the Science and Mathematics International Conference (SMIC 2018) (pp. 215–222). CRC Press Taylor & Francis.Heong, Y. M., Sern, L., Kiong, T. T., & Mohamad, M. (2016). The Role of Higher Order Thinking Skills in Green Skill Development.Herunata, H., Widarti, H. R., Amalia, R., Sulistina, O., Habiddin, H., & Rosli, M. S. bin. (2020). An analysis of higher order thinking skill (HOTs) in chemistry national examination for senior high school. AIP Conference Proceedings, 2215(1), 20009. https://doi.org/10.1063/5.0000639Horan, R. (2007). The Relationship Between Creativity and Intelligence: A Combined Yogic-Scientific Approach. Creativity Research Journal, 19(2–3), 179–202. https://doi.org/10.1080/10400410701397230Lather, A. S., Jain, S., & Shukla, A. D. (2014). Student’s Creativity in Relation to Locus of Control: a Study of Mysore University, India. The International Journal of Indian Psychȯlogy , 2(1), 146–165. http://ijip.in/article-details/?dip=18-01-058-20140201Lewis, A., & Smith, D. (1993). Defining Higher Order Thinking. Theory Into Practice, 32(3), 131–137.Lim, S., & Smith, J. (2008). The Structural Relationships of Parenting Style, Creative Personality, and Loneliness. Creativity Research Journal, 20(4), 412–419. https://doi.org/10.1080/10400410802391868McLoughlin, D., & Mynard, J. (2009). An analysis of higher order thinking in online discussions. Innovations in Education and Teaching International, 46(2), 147–160.Narciss, S. (2007). Feedback Strategies for Interactive Learning Tasks. In Handbook of Research on Educational Communications and Technology. Routledge. https://doi.org/10.4324/9780203880869.ch11Paideya, V., & Sookrajh, R. (2010). Exploring the use of supplemental instruction: Supporting deep understanding and higher-order thinking in Chemistry. South African Journal of Higher Education, 24(5), 758–770.Pannells, T. C., & Claxton, A. F. (2008). Happiness, creative ideation, and locus of control. Creativity Research Journal, 20(1), 67–71. https://doi.org/10.1080/10400410701842029Phakiti, A. (2018). Assessing Higher-Order Thinking Skills in Language Learning. In The TESOL Encyclopedia of English Language Teaching (pp. 1–7). https://doi.org/doi:10.1002/9781118784235.eelt0380Proske, A., Körndle, H., & Narciss, S. (2012). Interactive Learning Tasks BT - Encyclopedia of the Sciences of Learning (N. M. Seel (ed.); pp. 1606–1610). Springer US. https://doi.org/10.1007/978-1-4419-1428-6_1100Resnick, L. B. (1987). Education and Learning to Think. National Academy Press.Toledo, S., & Dubas, J. M. (2016). Encouraging Higher-Order Thinking in General Chemistry by Scaffolding Student Learning Using Marzano’s Taxonomy. Journal of Chemical Education, 93(1), 64–69. https://doi.org/10.1021/acs.jchemed.5b00184Zohar, A. (2004). Elements of Teachers’ Pedagogical Knowledge Regarding Instruction of Higher Order Thinking. Journal of Science Teacher Education, 15(4), 293–312. https://doi.org/10.1023/B:JSTE.0000048332.39591.e3Zohar, A., & Dori, Y. J. (2003). Higher Order Thinking Skills and Low-Achieving Students: Are They Mutually Exclusive? Journal of the Learning Sciences, 12(3), 145–181. https://doi.org/10.1207/S15327809JLS1202_1Zoller, U, & Dori, Y. J. (2002). Algorithmic, LOCS and HOCS (chemistry) exam questions: performance and attitudes of college students. International Journal of Science Education, 24(2), 185–203. https://doi.org/10.1080/09500690110049060Zoller, Uri, & Pushkin, D. (2007). Matching Higher-Order Cognitive Skills (HOCS) promotion goals with problem-based laboratory practice in a freshman organic chemistry course. Chemistry Education Research and Practice, 8(2), 153–171

Isolasi Lignin dari Sekam Padi (Oriza Sativa L) Serta Pemanfaatanya Sebagai Adsorben Ion Cd(II) Yudhi Utomo, M.Si; Ernis Nor Fadila
JC-T (Journal Cis-Trans): Jurnal Kimia dan Terapannya Vol 4, No 2 (2020)
Publisher : State University of Malang or Universitas Negeri Malang (UM)

Sekam padi merupakan limbah pertanian yang mengandung lignin sebesar (20-25%). Pelarut NaOH, etanol dan asam asetat merupakan pelarut yang umum digunakan dalam isolasi lignin karena menghasilkan lignin bebas sulfur dan kemurnian tinggi. Lignin berpotensi sebagai adsorben karena adanya gugus hidroksil dan cincin aromatik yang dapat berikatan dengan ion logam. Tujuan penelitian ini mengetahui pelarut terbaik dalam isolasi lignin sekam padi, mengetahui karakteristik lignin, dan menentukan kemampuan lignin sebagai adsorben logam Cd(II). Lignin hasil isolasi pelarut NaOH lebih efektif dan efisien karena menghasilkan rendemen dalam jumlah besar dibandingkan etanol dan asam asetat. Lignin hasil isolasi memiliki pita serapan pada daerah 3500-3200cm-1 yaitu peregangan O-H dan 1600cm-1 yaitu vibrasi kerangka aromatik serta memiliki bentuk morfologi permukaan bulat pada instrumentasi SEM. Lignin diaplikasikan sebagai adsorben Cd(II) dan memiliki kemampuan daya adsorpsi adsorben A dan B paling besar pada konsentrasi 2,0 ppm yaitu 1,037 dan 1,052 mg/g. Pemanfaatan lignin akan menaikkan nilai guna sekam padi sebagai adsorben logam berat.

PENGOLAHAN LIMBAH SAYUR DESA NGADIREJO (TENGGER) SEBAGAI PUPUK ORGANIK CAIR GUNA MENUJU DESA MANDIRI KREATIF Wiwin Dwi Jayanti; Muhammad Dwi Rifa’i; Yudhi Utomo
Bahasa Indonesia Vol 17 No 02 (2020): Sarwahita : Jurnal Pengabdian Kepada Masyarakat
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/sarwahita.172.9

Abstrak Ngadirejo adalah desa kawasan Tengger yang merupakan desa penghasil sayur wortel, kentang, kubis, sawi, dan bawang dengan jumlah masing-masing mencapai ±20 ton setiap masa panen. Dalam masa panen, 5-20% dari total panen adalah limbah sayur yang disebabkan oleh cacat pada sayur, dan sisa dari sortiran yang tidak bisa dikonsumsi oleh masyarakat. Rendahnya pengetahuan masyarakat terhadap pengolahan limbah organik menyebabkan limbah sayur menjadi penyumbang sampah terbesar di kawasan Tengger. Tujuan program pengabdian ini adalah mengurangi populasi sampah organik Desa Ngadirejo dengan cara mengolah limbah sayur sebagai pupuk organik cair (POC). Program ini dilakukan dalam bentuk sosialisasi, pelatihan, praktek pengolahan limbah sayur sebagai POC terhadap gabungan kelompok tani (GAPOKTAN), analisis kandungan unsur pada POC dalam lingkup laboratorium, serta pendampingan aplikasi POC sebagai pengganti pupuk kimia (PK) dalam penanaman sayur. Hasil program ini terbukti dapat menurunkan jumlah sampah sayur secara drastis, meningkatkan pengguna POC dan secara kualitatif produk POC memiliki unsur hara lebih banyak dari PK. Abstract Ngadirejo is a village in the Tengger area that produces ± 20 tons each of carrots, potatoes, cabbage, mustard greens, and shallots. During the harvest period, 5-20% of the total harvest is vegetable waste caused by defects in the vegetables, and the rest of the sort can no longer be consumed. The low level of public knowledge about organic waste processing has made vegetable waste the biggest contributor to waste in Tengger. This program aims to reduce the organic waste population in Ngadirejo by processing vegetable waste as liquid organic fertilizer (LOF). This program is carried out in form of socialization, training, and practice of processing vegetable waste as LOF to farmer, elemental analysis within the scope of the laboratory, and monitoring the application of LOF as a substitute for chemical fertilizers (CF) on vegetable cultivation. The results of this program have been shown to drastically reduce the amount of vegetable waste, increase LOF users, and qualitatively LOF products have more nutrients than CF.

Treatment of Dye Wastewater from Batik Industry by Coconut Shell Activated Carbon Adsorption Aulia Qisti; Yudhi Utomo; Deni Ainur Rokhim
Jurnal Kimia Fullerene Vol 6 No 1 (2021): Fullerene Journal of Chemistry
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/fjc.v6i1.213

Batik is a characteristic Indonesian textile product. The color of batik is one component that affects the quality of batik. Various types of batik dyes, one of which is remazol dyes. Remazol dyes are synthetic dyes that have strong chemical bonds. This is what underlies the process of production of the household batik industry in the village of Purwosekar, District of Tajinan, Malang Regency, with remazol coloring will produce liquid waste that is difficult to be deciphered naturally. This study aims to provide a water treatment solution using the coconut shell activated carbon adsorption method with chemical activation and the ability to adsorb remazol dyes. Adsorption experiments were carried out in batches with a mesh size of 8 with coconut shell carbon activated with 1 M HCl solution for 24 hours. The absorption of remazol dyes by coconut shell activated charcoal is carried out with a stirring speed variation for 60 minutes and the mass of activated charcoal to find the optimum adsorption conditions. Stirring speed variations are 30 rpm, 60 rpm, and 90 rpm, resulting in the highest efficiency at a speed of 90 rpm. While the variations in mass are 200 grams and 300 grams, the highest efficiency is obtained with a mass of 300 grams. Thus, the efficiency of the coconut shell activated carbon is proportional to the stirring speed and mass of the coconut shell activated carbon used

Gerakan Bersih-bersih Pantai Balekambang dari Sampah Plastik Nazriati Nazriati; Yudhi Utomo; Fauziatul Fajaroh; Suharti Suharti; Danar Danar; Endang Ciptawati
Abdimas: Jurnal Pengabdian Masyarakat Universitas Merdeka Malang Vol 5, No 2 (2020): July 2020
Publisher : University of Merdeka Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26905/abdimas.v5i2.3573

The beach is an attractive place to unwind from your daily routine. The beauty of the beach must always be maintained so that comfort can still be obtained for everyone who visits it. The beach becomes a comfortable place if cleanliness is maintained. Plastic waste, if any along the coast, can be carried by the waves into the ocean. Plastic waste brought to sea can be consumed by marine biota because marine biota cannot distinguish between plastic and food waste. This community service activity intends to inspire visitors (tourists), managers and traders at Balekambang beach to care about the environment. A well-preserved environment will be a legacy that will be left on the next generation. The survey results show that visitors understand the meaning of waste and are willing to dispose of waste in its place. DOI: https://doi.org/10.26905/abdimas.v5i2.3573

Co-Authors Abrilia, Putri Riza Afifah Afifah Agita Dzulhajh Anggraini Al-‘adawiyah, Rabiah Aldya, Riantina Fitra Alma, Lucky Radita Anggreani, Selvi Dewi Nur Anis Samroatul Lathifah Annida Elfiana Citra Ardianty Anugrah Ricky Wijaya Aulia Qisti Bina Aulia Mahfuzah Burhanuddin Ronggopuro Burhanuddin Ronggopuro Burhanuddin Ronggopuro Ciptawati, Endang Danar Danar Deni Ainur Rokhim Effendy Effendy Eli Hendrik Sanjaya Eli Khusmawardani Ernis Nor Fadila Etia, Chantiquenya Putri Fauziatul Fajaroh Fikriyatul Maulidiyah Habiddin Hanifatul Azizah Hanumi Oktiyani Rusdi Hasminar Rachman Fidiastuti Hasminar Rachman Fidiastuti, Hasminar Rachman Hayuni Retno Widarti Hilda Srivaliana Ilham Iing Merillarosa Iklima, Ilma Kanzu Ima Rosyida Isma Yanti Vitarisma Jacky Anggara Nenohai Jacky Anggara Nenohai Jacky Anggara Nenohai Jacky Anggara Nenohai Nenohai Kafita Krisnatul Islamiyah Kafita Krisnatul Islamiyah Lathifah, Anis Samroatul Lathifah, Anis Samrotul Maulidiyah, Fikriyatul Miranda, Nuri Trihasti Mohamad Amin Mohamad Amin Muhammad Dwi Rifa’i Muhammad Roy Asrori Muntholib Munzil Nanda Satria Anggara Nazriati Nazriati dkk. Neena Zakia Nur Chairini Nur Indah Agustina Nur Indah Agustina Nur Indah Agustina Nur Rochmat Nurnaningsih Herya Ulfah, Nurnaningsih Herya P., Dewi Regita Purwaning Rohmah Putri Arum Nilawati Putri, Ade Elviana Putri, Deby Amelia Rabi’ah Al-‘Adawiyah Rafika Fauzia Ulfa Riska Ridayati Riza Agung Pribadi Rohmansah, Wahyu Rooserina Kusumaningdyah Roushandy Asri Fardani RR. Ella Evrita Hestiandari Safitri, Frisca Nadya Sansan Hastuti Ningrum Selvi Dewi Nur Anggreani Sembiring, Rinawati Setya Ayu Aprilia Setyahari, Yurinda Sholikah, L. Putri Siti Marfuah, Siti Sofinila, Mida Fitri Agasty Subandi Subandi Suhadi Ibnu Suharti Sumari Sumari Surjani Wonorahardjo Taupik Hidayat, Taupik Thayban, Thayban Uciatul Adawiyah Vida Amalia Fitriani Vinda Cory Imami Wakhi Datul Nur Kholifah Weny Estiyani Wijaya, Dika Putra Wiwin Dwi Jayanti Yudhowati, Nuraini Rachma Yunisari, Yuneta Dwi Zelen S. Minata Zelen Surya Minata Zelen Surya Minata Minata

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