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All Journal International Journal of Renewable Energy Development IPTEK The Journal for Technology and Science Jurnal Inovasi Pendidikan Kimia Dimas: Jurnal Pemikiran Agama untuk Pemberdayaan PHENOMENON JOURNAL OF NATURAL SCIENCES AND MATHEMATICS RESEARCH Journal of Natural Sciences and Mathematics Research Phenomenon : Jurnal Pendidikan MIPA J-PEK (JURNAL PEMBELAJARAN KIMIA) Unnes Science Education Journal Walisongo Journal of Chemistry Journal of Educational Chemistry (JEC) International Journal of Renewable Energy Development
Mulyatun Mulyatun
Universitas Islam Negeri Walisongo Semarang
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

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Sumber Energi Terbarukan dan Pupuk Organik dari Limbah Kotoran Sapi Mulyatun Mulyatun
Dimas: Jurnal Pemikiran Agama untuk Pemberdayaan Vol. 16 No. 1 Tahun 2016
Publisher : LP2M of Institute for Research and Community Services - UIN Walisongo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (234.496 KB) | DOI: 10.21580/dms.2016.161.898

Abstract

In order to meet households energy needs, one of the groundbreaking efforts that needs to be done is to implement appropriate technology training in utilization of cow manure waste by recycling it into biogas and organic fertilizer. Animal husbandry in Bambankerep Sub-District of Ngaliyan, Semarang City, are sufficiently developed, however, the use of livestock manure has not been optimal, whereas livestock manure can be used as raw material to produce renewable energy in the form of biogas and organic fertilizer. Furthermore, Limited knowledge and skills of the people in Bambankerep sub-district in the utilization of cow manure waste by recycling it into biogas and organic fertilizer have become the main problem. Steps performed in Community service programs are as follow (1) Socialization of recycling livestock waste into a blessing; (2) training, (3) Monitoring and outreaching. The impact generated from this community service programs, among others are: (1) raising public awareness in the utilization of cow manure waste for biogas alternative energy, (2) increasing knowledge and skills of people in processing cow manure into energy and fertilizer, (3) growing number of business groups in cow manure organic fertilizer processing that are expected can improve the welfare of the people in Bambankerep sub-district, Mijen, Semarang City. Dalam rangka pemenuhan keperluan energi rumah tangga, salah satu upaya terobosan yang perlu dilakukan adalah melaksanakan pelatihan teknologi tepat guna pemanfaatan limbah kotoran sapi menjadi biogas dan pupuk organik. Usaha peternakan di Kelurahan Bambankerep, Ngaliyan Semarang cukup berkembang, tapi pemanfaatan kotoran ternak selama ini belum optimal, padahal kotoran ternak dapat dijadikan sebagai bahan baku untuk menghasilkan energi terbarukan dalam bentuk biogas dan pupuk organik. Keterbatasannya pengetahuan dan keterampilan yang dimiliki masyarakat di Kelurahan Bambankerep mengolah limbah kotoran sapai menjadi biogas dan pupuk organik menjadi permasalahn utama. Tahapan program pengabdian masyarakat yang dilakukan adalah: (1) Sosialisai pemanfaatan limbah kotoran hewan menjadi berkah; (2) pelatihan; (3) Monitoring dan Pendampingan. Dampak yang dihasilkan dari program pengabdian masyarakat ini antara lain: (1) meningkatkan kesadaran masyarakat untuk memanfaatkan limbah kotoran sapi untuk energi alternatif biogas, (2) meningkatnya pengetahuan dan ketrampilan masyarakat bidang pengolahan kotoran sapi menjadi energi dan pupuk, (3) tumbuhnya kelompok usaha pengolahan pupuk organik dari kotoran sapi sehingga diharapkan dapat meningkatkan kesejahteraan masyarakat Kelurahan Bambankerep Ngaliyan Semarang.
Green Concrete Made From Iron Slag Waste Mulyatun Mulyatun
Journal of Natural Sciences and Mathematics Research Vol 1, No 2 (2015): December
Publisher : Faculty of Science and Technology, Universitas Islam Negeri Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (247.42 KB) | DOI: 10.21580/jnsmr.2015.1.2.1603

Abstract

Synthesis of green concrete has been carried out by using iron slag waste of PT Inti Jaya Steel Jrakah, Semarang. Geopolimer (green concrete) is an aluminosilicate inorganic polymer with chain Si-O-Al that can be synthesized from material rich in silica and alumina with sodium hydroxide as an activator. Iron slag chemical content analysis indicated that this material is a part of pozzolan material with each individual components weight as follow: SiO2: 4.55%, Al2O3: 2.54%, CaO: 11.43%, Fe2O3: 77.10%, MnO2: 1.43 and  other minerals:  4.07%. The mole ratio of SiO2/Al2O3 of iron slag waste of PT Inti Jaya Steel Jrakah, Semarang is quite high at 3.05. Although the ratio is high, it is still can be synthesized using an activator solution of NaOH and increasing the drying time to 3 days and 24 hours of curing time at 60°C temperature to help the process of water molecule condensation in the geopolymerisation process. Characterized concrete (green concrete) that has been formed shows that the maximum compressive power can be achieved at composition ratio of Iron slag/ Na-silicate /NaOH /H2O of 55/10/4/8, with compressive power of 11.254 MPa. © 2015 JNSMR UIN Walisongo. All rights reserved.
Synthesis and Characterization of Cassava Shell Based Biodegradable Plastic with Kitosan Addition Supriyono Supriyono; Hamdan Hadi Kusuma; Mulyatun Mulyatun; Biaunik Niski Kumila
Journal of Natural Sciences and Mathematics Research Vol 3, No 1 (2017): June
Publisher : Faculty of Science and Technology, Universitas Islam Negeri Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (757.055 KB) | DOI: 10.21580/jnsmr.2017.3.1.1694

Abstract

Wasted-plastic which is a hardly-decomposed material was one of the major problems of trash-recycling management in Indonesia. Replacing a common plastic with biodegradable plastic was one of the solution to reduce the amount of undecomposed-materials in the enviroment. Therefore, the aim of this resarch is to study how to synthesis cassava shell based biodegradable plastic and to analyse the effect of kitosan addition on cassava shell based biodegradable plastic properties. There are three basic characterization processes performed to analyse the sample properties, i.e mechanical test, FTIR and biodegradability test. Kitosan enhanced the mechanical and biodegradability properties of samples. The elongation-percentage decreased down to 8,57% along with the increasing the amount of kitosan concentration. FTIR data indicated the presence of O-H, N-H, C-H, C=C, NO2 and C-O organic functional group on biodegradable plastic samples. Kitosan reduce the decomposition process of samples due to its hydrophilicity. Sample with highest concentration of kitosan decomposed at the longest time up to 14 days. . ©2017 JNSMR UIN Walisongo. All rights reserved.
Synthesis and characterization of SO42-/KCC-1 catalyst as an alternative candidate for simultaneous esterification and transesterification reactions Ginda Putri Farikhah; Wirda Udaibah; Mulyatun Mulyatun
Journal of Natural Sciences and Mathematics Research Vol 7, No 1 (2021): June
Publisher : Faculty of Science and Technology, Universitas Islam Negeri Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/jnsmr.2021.7.1.6797

Abstract

Sulfate-impregnated acid catalysts can be used to replace conventional homogeneous base catalysts which are very dangerous, corrosive and environmentally unfriendly. Sulfate impregnation on porous support material will increase the surface area of the catalyst. The use of KCC-1 as a supporting material can produce catalysts with excellent properties. The method used in this research is the hydrothermal method for the synthesis of KCC-1 and the direct impregnation method for the synthesis of SO42-/KCC-1. Characterization of the resulting material using X-ray diffraction (XRD), FTIR spectrometer, and low temperature emission scanning electron microscope (SEM). The characterization results showed that the synthesis of KCC-1 and SO42-/KCC-1 had been successfully carried out. This is evidenced by the formation of amorphous silica, the presence of peaks of silica and sulfate groups, and scanning electron microscope images showing nano-sized materials.©2021 JNSMR UIN Walisongo. All rights reserved. 
Synthesis of Low-Cost Adsorbent Based on Fly Ash for Heavy Metal Reduction of Cu and Cr In Textile Industrial Liquid Waste Mulyatun Mulyatun
Journal of Natural Sciences and Mathematics Research Vol 4, No 2 (2018): December
Publisher : Faculty of Science and Technology, Universitas Islam Negeri Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1611.02 KB) | DOI: 10.21580/jnsmr.2018.4.2.11020

Abstract

Heavy metal copper (Cu (II)), Chromium (Cr (IV) is a heavy metal that dominates textile industrial wastewater. Too large concentrations of Cu (II) in water can cause poisoning which has side effects of liver damage and gastrointentinal disorders. Cr metal in the body will cause interference with DNA synthesis and increase mutagen changes that can cause tumors. The use of fly ash as a Low Cost Adsorbent is an alternative.  The research method used is a physical activation process with carbonization at high temperatures (300˚C, 400˚C and 500˚C) in the furnace to be continued with chemical activation using concentrated acids (H2SO4 and CH3COOH) or base (KOH) in fly ash. Morphological analysis and the synthesized adsorbent function groups were performed using Scanning Electron Microscopes (SEM) and FTIR. Based on the adsorption capacity test, the ability of fly ash to adsorb Cu metal waste was 0.9962 mg/g and for Cr metal was 0.4760 mg/g. The temperature increase on the physical activation of fly ash (300 0C, 4000C, 5000C) causes an increase in the adsorption capacity of the synthesized fly ash. The best adsorbent for Cu metal is A5K with an adsorption capacity of 0.9994 mg/g under optimal conditions. The best adsorbent for Cr metal is A5S with an adsorption capacity of 0.9325 mg/g under optimal conditions. ©2018 JNSMR UIN Walisongo. All rights reserved.
ANALISIS KETERAMPILAN DASAR MENGAJAR MAHASISWA CALON GURU KIMIA (STUDI PADA PRAKTIK PENGALAMAN LAPANGAN MAHASISWA TADRIS KIMIA) mulyatun s
Phenomenon : Jurnal Pendidikan MIPA Vol 4, No 1 (2014): Jurnal Pendidikan MIPA
Publisher : Faculty of Science and Technology, Universitas Islam Negeri Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/phen.2014.4.1.112

Abstract

Pembekalan praktis kependidikan bagi mahasiswa calon guru di LPTK mutlak diperlukan untuk meningkatkan kompetensi calon guru ke- tika terjun di dunia pendidikan. Pembekalan ini dapat dilakukan melalui berbagai kegiatan, diantaranya melalui praktik pengajaran secara mikro (microteaching) maupun melalui praktik mengajar secara riil di sekolah (Praktik Pengalaman Lapangan).  Penelitian ini bertujuan untuk menge- tahui tingkat penguasaan keterampilan dasar mengajar calon guru Tadris Kimia Fakultas Tarbiyah IAIN Walisongo pada kegiatan Praktik Pengala- man Lapangan (PPL).Penelitian dilaksanakan di Program Studi Tadris Kimia Fakultas Tar- biyah IAIN Walisongo Semarang dengan melibatkan mahasiswa Tadris Kimia yang mengambil mata kuliah Praktik Pengalaman Lapangan. Data diperoleh dengan metode observasi pada kegiatan pembelajaran di kelas oleh mahasiswa calon guru Kimia. Delapan keterampilan dasar mengajar mahasiswa diamati dan dianalisis pada pelaksanaan Praktik Pengalaman Lapangan  meliputi  (1)  Keterampilan  bertanya,  (2)  Keterampilan  mem- beri penguatan, (3) Keterampilan mengadakan variasi, (4) Keterampilan menjelaskan, (5) Keterampilan membuka dan menutup pelajaran, (6) Ket- erampilan membimbing diskusi kelompok kecil, (7) Keterampilan menge- lola kelas, (8) Keterampilan mengajar kelompok kecil dan perorangan.Delapan keterampilan dasar mengajar Mahasiswa Tadris Kimia pada pelaksanaan PPL secara keseluruhan adalah baik dangan persentase pe- nilaian mencapai 69,59%. Keterampilan dasar mengajar mahasiswa Tad- ris Kimia yang paling menonjol adalah ketrampilan memberi penguatan (74,14%), sedangkan ketrampilan yang paling rendah adalah keterampilan mengadakan variasi (64,86%).
Efektivitas Penggunaan Multimedia Pembelajaran berbasis Multi Level Representasi (MLR) untuk meningkatkan Hasil Belajar Peserta Didik pada Materi Sistem Koloid Kelas XI MAN Kendal Indah Dwi Astuti; Mulyatun Mulyatun
Journal of Educational Chemistry (JEC) Vol 1, No 2 (2019)
Publisher : Chemistry Education Department

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/jec.2019.1.2.4357

Abstract

Penelitian ini bertujuan untuk mengetahui efektivitas penggunaan pembelajaran multimedia berbasis MLR pada materi sistem koloid. Penelitian yang dilakukan adalah penelitian eksperimen dengan bentuk Pretest-posstest Control Group Design dengan pengambilan sampel dalam kelompok cluster random sampling. Nilai rata-rata hasil belajar yang diperoleh dari kelas eksperimen dan kelas kontrol berturut-turut adalah 74,85 dengan persentase ketuntasan 71% dan 65,97 dengan persentase ketuntasan 33%. Berdasarkan hasil uji t-test pada = 5% dan dk = 56 diperoleh thitung ttabel = 4,475 2,003, sehingga dapat disimpulkan bahwa terdapat perbedaan rata-rata hasil belajar antara kelas eksperimen dan kontrol. Selanjutnya dari hasil analisis sisi kanan, diperoleh thitung ttabel = 4,475 1,672 dengan dk = 57 dan pada = 5%. Hasil penelitian ini dapat disimpulkan bahwa pembelajaran kimia menggunakan multimedia berbasis pembelajaran MLR pada materi koloid efektif diterapkan pada pembelajaran kimia, dan dapat meningkatkan hasil belajar siswa kelas XI MIPA di MAN Kendal.
Modifikasi Bentonit Menggunakan Surfaktan Kationik Benzalkonium Klorida Titik Turmiati; Wirda Udaibah; Mulyatun Mulyatun
Walisongo Journal of Chemistry Vol 2, No 2 (2019): Walisongo Journal of Chemistry
Publisher : Department of Chemistry Faculty of Science and Technology Walisongo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/wjc.v2i2.6024

Abstract

Bentonit alam yang telah dimodifikasi menjadi organobentonit dengan menggunakan surfaktakan kationik Benzalkonium Klorida sebagai agen penginterkalasi dengan berbagai variasi suhu. Material hasil sintesis diaplikasikan sebagai adsorben untuk penyerapan logam berat berupa ion logam Zn2+. Proses adsorpsi dilakukan dalam berbagai variasi kondisi yaitu pH dan waktu kontak. Hasil analisis XRD menunjukkan material bentonit yang telah dimodifikasi berhasil di sintesis, hal ini terlihat dari jarak antar lapis pada suhu 50˚C sebesar 15,06 Å, suhu 60˚C sebesar 16,76 Å dan suhu 70 ˚C sebesar 16,50 Å dibandingkan dengan bentonit alam sebesar 12,09 Å. Spektra FTIR menunjukkan serapan pita 2360 cm-1 yaitu adanya vibrasi C-N dan 1465 cm-1 adanya vibrasi N-H. Hal ini menunjukkan adanya garam ammonium kuartener yang di pada interlayer bentonit. Penentuan pH optimum dan waktu kontak pada saat adsorpsi. Dari pH  4-8 menunjukkan bahwa pH optimum untuk proses adsorpsi ion logam Zn2+ adalah pH 6 dengan daya adsorpsi sebesar 99,914%, sedangkan pada bentonit alam sebesar 92,94%, kemudian untuk waktu kontak adalah di 60-120 menit dengan daya adsorpsi sebesar 97,92% pada suhu sintesis 60˚C serta waktu kontak untuk bentonit alam 85,31%. Data kinetika adsorpsi menggunakan model pseudo second order lebih sesuai untuk menjelaskan proses adsorpsi ion logam Zn2+. Hal ini dapat  disimpulkan bahwa bentonit yang telah dimodifikasi memiliki daya adsorpsi ion logam Zn2+ yang lebih besar di bandingkan dengan bentonit yang belum termodifikasi.
Uji Kapasitas Adsorpsi Ion Logam Cu2+ Menggunakan Hidrochar Eichhornia Crassipes Termodifikasi H2o2 Lia Nur Khanifa; Mulyatun Mulyatun; Ervin Tri Suryandari
Walisongo Journal of Chemistry Vol 2, No 2 (2019): Walisongo Journal of Chemistry
Publisher : Department of Chemistry Faculty of Science and Technology Walisongo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/wjc.v2i2.6026

Abstract

Hidrochar yang disintesis dari Eichhornia crassipes dapat digunakan sebagai adsorben untuk adsorpsi ion logam Cu2+. Dalam penelitian ini, hidrochar disintesis menggunakan metode hidrotermal dengan berbagai variasi suhu serta dimodifikasi menggunakan H2O2. Hasil karakterisasi FTIR pada suhu 220, 240, 260 dan 280ᵒC menunjukkan hidrochar mengandung gugus fungsi hidroksil, karbonil, karboksil dan amina. Hasil SEM menunjukkan morfologi permukaan pada hidrochar termodifikasi lebih kasar dan tidak teratur dibandingkan dengan hidrochar tanpa modifikasi. Modifikasi menggunakan H2O2 pada hidrochar menunjukkan peningkatan komposisi unsur oksigen pada hidrochar termodifikasi. Berdasarkan kemampuan adsorpsi menunjukkan hidrochar termodifikasi lebih efektif dalam menyerap ion logam Cu2+ dibandingkan dengan hidrochar tanpa modifikasi. Hal tersebut ditunjukkan berdasarkan nilai kapasitas adsorpsi pada suhu 240ᵒC, dimana pada hidrochar termodifikasi memiliki nilai kapasitas adsorpsi sebesar 3,4703 mg/g sedangkan pada hidrochar tanpa modifikasi sebesar 1,5349 mg/g. Suhu hidrotermal dapat mempengaruhi nilai kapasitas adsorpsi ion logam Cu2+. Pada penelitian ini nilai kapasitas adsorpsi terbaik pada suhu 240oC sebesar 3,4703 mg/g.
The Effect of Vanadium Oxide on The Catalytic Activity of Titanium Silicalite in Conversion of Benzene to Phenol Mulyatun Mulyatun
Journal of Natural Sciences and Mathematics Research Vol 1, No 1 (2015): June
Publisher : Faculty of Science and Technology, Universitas Islam Negeri Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (72.184 KB) | DOI: 10.21580/jnsmr.2015.1.1.483

Abstract

Phenol is one of the most important intermediate for petrochemical, agrochemical, and plastics industries. Almost 95% phenol is produced using cumene method. Cumene method is a multi-stage process with many disadvantages including the difficulties to gain phenol product in maximum quantities and production of co-product such as acetone which has great amount in market nowadays. One of the alternative routes to produce phenol which has more advantages is through benzene hydroxylation reaction using H2O2 as oxidant agent and Titanium Silikalit-1 (TS-1) as catalyst. TS-1 catalyst has high catalytic activity and selectivity in selective oxidation reaction of aromatic compounds with H2O2 which important for commercial industries. However, the reaction rate is tend to be low because TS-1 has hydrophobic nature and as the result H2O2 adsorption which has hydrophilic nature towards active sites of TS-1 is also become slower. Addition of metal oxide V2O5 could enhance hydrophilicity of TS-1 catalyst. Liquid phase catalytic benzene hydroxylation using hydrogen peroxide as oxidant was carried out over vanadium (V) oxide-modified TS-1 catalyst (V2O5/TS-1), that were prepared by impregnation method using vanadium methavanadate as precursor and characterized by pyridine adsorption and hydrophilicity techniques.
Co-Authors Biaunik Niski Kumila Chanifah, Siti Didik Prasetyoko Drastisianti, Apriliana Dwi Astuti, Indah Ervin Tri Suryandari ervin tri suryandari, ervin tri Ginda Putri Farikhah Hadi Kusuma, Hamdan Indah Dwi Astuti Istadi Istadi Jamhari Jamhari Khanifa, Lia Nur Kumila, Biaunik Niski Lathifa, Ulya Lia Nur Khanifa Muhariyansah, Jajang Naqsyahbandi, Fajar Roudloh Muna Lia, Roudloh Muna Supriyono - Titik Turmiati Turmiati, Titik Widayat Widayat Wirda Udaibah