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Pemanfaatan Gulma Siam (Chromolaena odarata L.) Sebagai Adsorben Logam Timbal Erni Mohamad; Intan J. Oputu; Julhim S. Tangio
Jambura Journal of Chemistry Vol 2, No 1 (2020): February
Publisher : Universitas Negeri Gorontalo

This study aims to utilize (Chromolaena odorata L) as a metal adsorbent. The methods used to make activated charcoal are dehydration, carbonization, and activation. The activated carbon is then characterized to obtain activated charcoal that can be applied, then optimized. The results of activated carbon characterization obtained have reached the activated carbon quality requirements based on the Indonesian Industry Standard (SII No. 0258-88). Based on the adsorption test, the optimum pH of Pb2+ (Pb (NO3) 2 (in distilled water) Chromolaena odorata L charcoal activated by NaOH 0.2 M under varying pH (2,3,4,5,6) is at pH 5 with 69.00% absorption. The optimum contact time required for Pb ion adsorption is 4 hours at variation (1-5 hours) with 70.19% absorption. The optimum concentration at variation (concentration 20; 40; 60; 80; 100 ppm) on Pb ion adsorption is 100 ppm with 76.15% absorption. The optimum heating time is a variation of 1.5; 2; 2.5; and 3 hours of Pb ion adsorption is one hour 30 minutes with an absorption of 65.95%. Based on the optimization results, the activated carbon from the Chromolaena odorata L can be used as an adsorption material against the contamination of lead heavy metals (Pb).

Pemanfaatan Biomassa Enceng Gondok Dari Danau Limboto Sebagai Penghasil Biogas Julhim Tangio
Jambura Journal of Chemistry Vol 1, No 1 (2019): February
Publisher : Universitas Negeri Gorontalo

The purpose of this study is to study the potential of water hyacinth in producing biogas. In this study, it was studied how to make biogas with the addition of biostarter 1.25 g of cow dung compared to controls without a biostater. Besides that, it also examines how to make biogas using snail intestinal biostarter. The addition of biostarter amounts to 50 g of cow dung. The treatment of acid hydrolysis against the water hyacinth substrate and without biostarter and the treatment of acid hydrolysis and addition of biostarter 1.25 g cow dung. The results of the study were obtained at the initial stage of research, in the TAK (No Control Acidification) reactor formed at 29 mL, TAS reactor (without acidification with cow manure biostater) of 50 mL and TAB reactor (without acidification with snail intestinal biostater) of 30 mL. The advanced stage with the addition of acid and the addition of 1: 1 biostater the results obtained at the KS (Cow Manure) reactor were 102 mL and the SD reactor was 5 mL.Keywords: Hyacinth, biogas, anaerobic digestion, acid hydrolysisTujuan penelitian ini adalah untuk mengkaji potensi enceng gondok tersebut dalam menghasilkan biogas. Dalam penelitian ini dikaji bagaimana pembuatan biogas dengan penambahan biostarter 1,25 g kotoran sapi dibandingkan kontrol tanpa biostater. Disamping itu juga mengkaji bagaimana pembuatan biogas dengan mengunakan biostarter usus bekicot. Penambahan jumlah biostarter menjadi 50 g kotoran sapi. Adanya perlakuan hidrolisis asam terhadap substrat enceng gondok dan tanpa biostarter dan adanya perlakuan hidrolisis asam dan penambahan biostarter 1,25 g kotoran sapi. Hasil penelitian diperoleh pada peneltian tahap awal, pada reaktor TAK (Tanpa Pengasaman Kontrol) biogas terbentuk sebesar 29 mL, reaktor TAS (Tanpa Pengasaman dengan Biostater Kotoran Sapi) sebesar 50 mL dan reaktor TAB (Tanpa Pengasaman dengan Biostater usus Bekicot) sebesar 30 mL. Pada tahap lanjutan dengan penambahan asam dan penambahan biostater 1:1 diperoleh hasil pada reaktor KS (Kotoran Sapi) sebesar 102 mL dan reaktor SD sebesar 5 mL.Kata Kunci: Enceng gondok, biogas, anaerobic digestion, hidrolisis asam

Pemberdayaan Masyarakat Kayubulan Melalui Implementasi Teknologi Pengolahan Eceng Gondok dan Sedimen Danau Limboto Yuszda Salimi; Yuliyanti Kadir; Julhim S. Tangio
ABDIMAS: Jurnal Pengabdian Masyarakat Vol. 3 No. 2 (2020): ABDIMAS UMTAS: Jurnal Pengabdian Kepada Masyarakat
Publisher : LPPM Universitas Muhammadiyah Tasikmalaya

Laju sedimentasi dari beberapa sungai yang bermuara di danau Limboto semakin tinggi sehingga menyebabkan pendangkalan. Pertumbuhan eceng gondok yang sangat cepat menutupi permukaan danau menyebabkan perubahan ekosistem danau dan kerugian finansial bagi nelayan lokal. Program Kuliah Kerja Nyata Pembelajaran Pemberdayaan Masyarakat (KKN PPM) di kelurahan Kayubulan bertujuan untuk mengedukasi masyarakat melalui implementasi teknologi pengolahan eceng gondok dan sedimen danau Limboto. Kegiatan pemberdayaan masyarakat melalui 5 (lima) tahapan yakni tahap persiapan, tahap sosialisasi, tahap pelatihan, tahap pendampingan dan tahap evaluasi. Metode yang digunakan berupa FGD (forum group discussion), perencanaan partisipatif dan metode praktek. Hasil kegiatan ini memberi pemahaman pada masyarakat tentang pentingnya menjaga danau. Pemahaman masyarakat kelurahan Kayubulan tentang pengolahan eceng gondok menjadi biogas, briket, pupuk dan sedimen menjadi batako, batu bata dan pot tanaman meningkat secara keseluruhan hingga 48%. Kegiatan ini berdampak positif pada peningkatan pengetahuan dan ketrampilan kelompok Alata sebagai mitra sasaran.

Learning Media Design based on Traditional Game of Tumbu-Tumbu Belanga (T2B) on Salt Hydrolysis Topic Julhim S. Tangio; Rusmiyati Patilima; Jafar La Kilo; Akram La Kilo
JCER (Journal of Chemistry Education Research) Vol. 5 No. 1 (2021): Volume 5 No. 1 June 2021
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jcer.v5n1.p32-40

This research aimed to test the validity of the feasibility of traditional game learning media on salt hydrolysis. This research was development research (R&D) with a qualitative descriptive approach. This research uses the ADDIE model development design, which consists of 5 (five) stages, namely (1) analysis, (2) design, (3) development, (4) implementation, and (5) evaluation. Data collection techniques in this study used a validation sheet for the assessment of the feasibility of tumbu-tumbu learning media. The tumbu-tumbu learning media validation wass assessed by 4 expert validators, namely 2 chemistry lecturers of State University of Gorontalo material experts, 1 media expert lecturer, and 1 high school chemistry teacher. The results of the validation of tumbu-tumbu learning media development obtained an average percentage 0f 89.40%, which was categorized in very feasible criteria. Therefore, the tumbu-tumbu learning media are highly usable in the learning process of salt hydrolysis.

PEMBERDAYAAN MASYARAKAT MELALUI PELATIHAN PENGOLAHAN LIMBAH PADAT SAGU MENJADI BIOBRIKET DIDESA PANGI KABUPATEN DULUPI KECAMATAN BOALEMO Wiwin Rewini Kunusa; Hendri Iyabu; Julhim S Tangio
Jurnal Sibermas (Sinergi Pemberdayaan Masyarakat) Vol 11, No 5 (2022): Jurnal Sibermas (Sinergi Bersama Masyarakat)
Publisher : Univeristas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/sibermas.v11i5.12326

Terlaksananya Program KKNT Desa Membangun melalui program Pengabdian Masyarakat dalam Pencapaian SDGs. Sebagai kepedulian kami selaku dosen Jurusan Kimia FPMIPA yang memberikan bekal pengetahuan dan keterampilan kepada masyarakat, Desa Pangi Kecamatan Dulupi Kabupaten Boalemo untuk memanfaatkan limbah padat hasil pengolahan sagu yang melimbah menjadi produk biobriket yang inovatif bernilai ekonomi tinggi efektif untuk meningkatkan ekonomi masyarakat.Memberikan pemahaman dan pengetahun kepada masyakarakat untuk berwirausaha Briket (bioarang) merupakan energi biomassa yang ramah lingkungan dan biodegradable. Briket mempunyai keuntungan ekonomis yang tinggi yaitu mudah dibuat dan memiliki nilai kalor yang tinggi (Heruwati, 2009). Bahan dasar briket adalah merupakan padatan berpori hasil proses pembakaran bahan yang mengandung karbon dengan kondisi tanpa oksigen sehingga bahan hanya terkarbonisasi dan tidak teroksidasi. Sebagian besar pori pada arang masih tertutup oleh hidrogen, tar, dan senyawa organik lain yang komponennya terdiri dari abu, air, nitrogen, dan sulfur. Pada prinsipnya pembriketan adalah proses pengempaan bahan berukuran partikel kecil yang berasal dari limbah organik, limbah pabrik, maupun limbah perkotaan di dalam suatu cetakan untuk diperoleh struktur padatan yang rapat dan kompak. Biasanya briket terbuat dari kayu yang dibakar kemudian dicetak. Namun, penggunaan kayu sebagai bahan baku pembuatan briket akan menjadi tidak efektif dan efisien karena menyebabkan banyaknya pohon yang harus ditebang. Maka dari itu, limbah-limbah organik pertanian berupa limbah ampas sagu dapat dipilih menjadi alternative bahan baku yang efektif dan efisien dalam pembuatan briket. Dalam pembuatan briket ini, teknologi yang dapat dimanfaatkan untuk mengolah limbah ampas sagu ini adalah proses karbonasi. Terdapat bahan tambahan lain yang berfungsi sebagai perekat (binder) yaitu tepung tapioca.

Gerakan Peduli Stunting Masyarakat Lahumbo Kecamatan Tilamuta Kabupaten Boalemo Wiwin Rewini Kunusa; Hendri Iyabu; Julhim S Tangio
Jurnal Sibermas (Sinergi Pemberdayaan Masyarakat) Vol 11, No 4 (2022): Jurnal Sibermas (Sinergi Bersama Masyarakat)
Publisher : Univeristas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/sibermas.v11i4.12325

Desa Lahumbo merupakan Desa yang di Mekarkan dri Desa Mohungo pada Tahun 1986 yang pada saat itu kepala Desa-nya adalah “ Baidi Kamumu”. dengan adanya semangat perjuangan pada tanggal 1 Maret 1986 dan kerja keras dari tokoh masyarakat dan panitia pemekaran Desa Lahumbo maka lahirlah Desa Lahumbo 1 Maret 1986 yang diberi nama “ Desa Lahumbo” yang kemudian Desa Lahumbo sebagai pejabat Kepala Desa adalah Hino Manopo selama 1 Tahun. kemudian pada Tahun 1987-1988 Bapak Djafar Alamri pelaksana harian dan pada Tahun 1988-2007 Bapak Daud Yajitala menjadi kepala Desa yang definitif. Desa Lahumbo Terletak dibagian Utara dari Desa Mohungo ( Desa Induk) yang mempunyai luas Wilayah 10.000 Ha.Berdasarkan data desa, Desa Lahumbo termasuk dalam Lokus Stunting, sehingga kami berinisiatif mengadakan sosialisasi sekaligus Pemberian Makanan Tamabahan dan bingkisan (sayuran, buah, telur, tempe, biscuit dan susu) untuk memberikan edukasi mengenai pentingnya pencegahan Stunting sejak 1000 hari pertama kehidupan dengan memperhatikan pola asuh dan pemberian makanan bergizi pada balita. Kemudian kami melakukan pendataan kembali balita yang terdampak Stunting dengan membagikan Kuesioner, untuk melihat presentase penurunan Stunting dan mengetahui pengetahuan ibu mengenai pola asuh anak yang baik.

Deskripsi Keterampilan Generik Sains Siswa dalam Penyelesaian Soal Kimia pada Materi Hidrolisis Garam Marnila Marnila; Erni Mohamad; Wiwin Rewini Kunusa; Astin Lukum; Julhim S. Tangio; Ahmad Kadir Kilo
Orbital: Jurnal Pendidikan Kimia Vol 7 No 1 (2023): Orbital: Jurnal Pendidikan Kimia
Publisher : Chemistry Education Department of Education and Teaching Faculty

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19109/ojpk.v7i1.17128

Generic science skills are very important for students, in addition to being able to improve students' understanding of concepts, by measuring generic science skills teachers can understand the character and skills possessed by students. This study aims to determine students' generic science skills in solving chemistry problems on salt hydrolysis material by high school students of class XI IPA SMA Muhammadiyah Batudaa. The focus of this study is to describe students' generic science skills in solving chemistry problems on salt hydrolysis material. The method used in this study is a qualitative descriptive research method using tests. The data was obtained through a description test, which was done in writing by 66 students at SMA Muhammadiyah Batudaa. The data that has been obtained will then be analyzed first through the code on the answers given by students, as well as through the scores of each component of the student answers. The results showed the achievement of generic science skills, namely indirect observation 78.41% (good), symbolic language 59.85% (less), law of cause and effect 62.06% (sufficient), logical frame 73.48% (sufficient), logical consistency 64.44% (sufficient). In general, the mastery of generic science skills of grade XI science students of Muhammadiyah Batudaa High School obtained an average percentage of 63.42%, including in the sufficient category.

Measuring Students' Scientific Argumentation Skills in Explaining Phenomena Related to Acid-Base Concepts Rahmawati Hilala; Lukman Abdul Rauf Laliyo*; Jafar La Kilo; Julhim S. Tangio; Erni Mohamad; Mangara Sihaloho
Jurnal Pendidikan Sains Indonesia Vol 11, No 2 (2023): APRIL 2023
Publisher : Universitas Syiah Kuala

Scientific argumentation is one of the main competencies of students in communicating chemical phenomena through the application of conceptual mastery that they have understood. The development of this ability has been postulated in the 2013 curriculum through constructivist-based learning approaches and scientific inquiry, either in the classroom or the laboratory. However, there is relatively little information on how students' scientific argumentation skills develop. This study aims to measure students' scientific argumentation skills in explaining five science phenomena related to the acid-base concept, namely: acid rain, salt crystal making, the use of antacids as ulcer medicine, the use of CaMgCO3 dolomite fertilizer, and the difference in the acidity level of HCl and H2SO4, using Rasch modeling. Each phenomenon was measured by three multiple-choice test items, which were developed to test students' ability to make claims (Q1), evidence (Q2), and justification (Q3). The data were analyzed using Rasch modeling, allowing researchers to measure the item and individual respondent levels. Respondents were 100 chemistry students in Gorontalo, who were differentiated in gender and adversity quotient. The results showed that the measurement instrument has good validity and reliability. In addition, it was found that students' abilities differed; some items responded differently regarding gender and adversity quotient. Most students tended to be weak in explaining the phenomenon of acid rain, the use of antacids for ulcer disease, the use of dolomite fertilizer, and the difference in the acidity level of HCl and H2SO4

Measuring Students' Scientific Argumentation Skills in Explaining Phenomena Related to Acid-Base Concepts Rahmawati Hilala; Lukman Abdul Rauf Laliyo*; Jafar La Kilo; Julhim S. Tangio; Erni Mohamad; Mangara Sihaloho
Jurnal Pendidikan Sains Indonesia Vol 11, No 2 (2023): APRIL 2023
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jpsi.v11i2.27822

Scientific argumentation is one of the main competencies of students in communicating chemical phenomena through the application of conceptual mastery that they have understood. The development of this ability has been postulated in the 2013 curriculum through constructivist-based learning approaches and scientific inquiry, either in the classroom or the laboratory. However, there is relatively little information on how students' scientific argumentation skills develop. This study aims to measure students' scientific argumentation skills in explaining five science phenomena related to the acid-base concept, namely: acid rain, salt crystal making, the use of antacids as ulcer medicine, the use of CaMgCO3 dolomite fertilizer, and the difference in the acidity level of HCl and H2SO4, using Rasch modeling. Each phenomenon was measured by three multiple-choice test items, which were developed to test students' ability to make claims (Q1), evidence (Q2), and justification (Q3). The data were analyzed using Rasch modeling, allowing researchers to measure the item and individual respondent levels. Respondents were 100 chemistry students in Gorontalo, who were differentiated in gender and adversity quotient. The results showed that the measurement instrument has good validity and reliability. In addition, it was found that students' abilities differed; some items responded differently regarding gender and adversity quotient. Most students tended to be weak in explaining the phenomenon of acid rain, the use of antacids for ulcer disease, the use of dolomite fertilizer, and the difference in the acidity level of HCl and H2SO4

Optimalisasi Pemanfaatan Limbah Pertanian Sebagai Pupuk Organik Dan Pakan Budidaya Ikan Untuk Meningkatkan Perekonomian Masyarakat Desa Bulotalangi Barat Julhim S. Tangio; Weny J.A Musa; Opir Rumape; Rahnan Lamusu; Suchi Wulandari Dai; Nindiyawati H Maku; Meyrin Hamzzah; Sri Deby R.S Dude
Damhil: Jurnal Pengabdian kepada Masyarakat Vol 1, No 2: December 2022
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/damhil.v1i2.17448

West Bulotalangi Village is one of the villages in East Bulango District, Bone Bolango Regency. Most of the economic activities of the people of West Bulotalangi are engaged in the agricultural sector. The dominant people's livelihoods are farmers and ranchers. One of the efforts made by the community is catfish farming. However, catfish farmers are experiencing a problem, namely the price of circulating fish feed has increased while the price of catfish is relatively cheap. Therefore, to increase the selling price of catfish, several programs were held from KKN-T Merdeka Learning Campus students, namely making catfish feed so that it makes it easier for the community to cultivate catfish because the materials used are relatively cheap and easy to obtain, there is also processing of catfish into processed products which are one of the solutions to the problem to increase the economic value of catfish. In addition, in the agricultural sector, the program proposed by KKN-T MBKM students was the manufacture of BOKHASI fertilizer (Biological Rich Organic Material) by utilizing agricultural waste and then processing it into fertilizer. For this reason, efforts are needed to be able to increase the knowledge and skills of the people of West Bulotalangi Village related to making fertilizer, making fish feed, and strategies for developing processed products. The method used is the empowerment of the target group including learning techniques in the form of theory and simulation to the target community and also direct practice of the manufacturing process with students and the community.Keywords: Agricultural waste, catfish, fertilizer.

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