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All Journal JURNAL KIMIA SAINS DAN APLIKASI Jurnal Reka Lingkungan CHEMICA Jurnal Teknik Kimia Bulletin of Chemical Reaction Engineering & Catalysis WARTA Jurnal Teknik Kimia Jurnal Inovasi Teknik Kimia Automotive Experiences Abdi Geomedisains Techno Prosiding University Research Colloquium Abdi Teknoyasa Bulletin of Chemical Reaction Engineering & Catalysis
Herry Purnama
Universitas Muhammadiyah Surakarta
Aerospace Engineering Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Dentistry Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Nursing

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PENGEMBANGAN PRODUKSI PESTISIDA ALAMI DARI Beauveria bassianaDAN Trichoderma sp. MENUJU PERTANIAN ORGANIK Purnama, Herry; Hidayati, Nur; Setyowati, Eni
WARTA WARTA Volume 18, Nomor 1, Maret 2015
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Recently the condition of agriculture in Indonesia needs to be addressed. Soil fertility getting damaged due to chemical fertilizer that is not impartial. In addition, the impact of excessive use of synthetic pesticides can cause damage to the ecosystem. Control of plant diseases using biological agents began getting attention because of public concerns due to the use of synthetic chemical pesticides. Biological agents are microorganisms,  both  naturally  occurring  such  as  bacteria,  fungi,  viruses  and protozoa, as well as the results of genetic engineering that are used to control plantpests. Madrasah Diniyah Jumapolo, Karanganyar, has pioneered the manufacture of biological agents to support organic farming although on a small scale. Community service activities undertaken to provide assistance in the improvement of the production process  and  management  improvements.  The  technology  developed  is  the  use  ofbiological pesticides agent isolated from Beauveria bassiana and Trichoderma sp. As a natural insecticide and fungicide. The activities received support from the madrasa and expressed successfully produce biological agents in the proper packaging. In addition to the consumption of madrasa and nearby farmers, pesticide product ofbiological agents is also sold to the public. The selling of products will increase the development of organic farming to produce healthy food also will gain additional income for the madrasa.
PENGEMBANGAN PRODUKSI PESTISIDA ALAMI DARI Beauveria bassianaDAN Trichoderma sp. MENUJU PERTANIAN ORGANIK Purnama, Herry; Hidayati, Nur; Setyowati, Eni
WARTA WARTA Volume 18, Nomor 1, Maret 2015
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (280.09 KB) | DOI: 10.23917/warta.v18i1.1161

Abstract

Recently the condition of agriculture in Indonesia needs to be addressed. Soil fertility getting damaged due to chemical fertilizer that is not impartial. In addition, the impact of excessive use of synthetic pesticides can cause damage to the ecosystem. Control of plant diseases using biological agents began getting attention because of public concerns due to the use of synthetic chemical pesticides. Biological agents are microorganisms,  both  naturally  occurring  such  as  bacteria,  fungi,  viruses  and protozoa, as well as the results of genetic engineering that are used to control plantpests. Madrasah Diniyah Jumapolo, Karanganyar, has pioneered the manufacture of biological agents to support organic farming although on a small scale. Community service activities undertaken to provide assistance in the improvement of the production process  and  management  improvements.  The  technology  developed  is  the  use  ofbiological pesticides agent isolated from Beauveria bassiana and Trichoderma sp. As a natural insecticide and fungicide. The activities received support from the madrasa and expressed successfully produce biological agents in the proper packaging. In addition to the consumption of madrasa and nearby farmers, pesticide product ofbiological agents is also sold to the public. The selling of products will increase the development of organic farming to produce healthy food also will gain additional income for the madrasa.
Pengaruh waktu dan jarak elektroda pada pengolahan lindi dengan metode elektrokoagulasi-adsorpsi zeolit Trisnaawati Trisnaawati; Herry Purnama
Jurnal Teknik Kimia Vol 27 No 2 (2021): Jurnal Teknik Kimia
Publisher : Chemical Engineering Department, Faculty of Engineering, Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jtk.v27i2.714

Abstract

Banyaknya sampah yang menumpuk di TPA dapat mencemari air tanah karena adanya resapan dari sampah. Secara umum, lindi dicirikan oleh tingginya tingkat kebutuhan oksigen kimia (COD), total padatan tersuspensi (TSS), dan pH. Salah satu metode altenatif yang tepat dalam pengolahan air lindi agar kadar COD, TSS dan pH adalah metode elektrokoagulasi dan adsorpsi. Pada penelitian ini dilakukan pengolahan lindi dengan metode elektrokoagulasi elektroda besi dan metode adsorpsi menggunakan adsorben zeolit. Elektrokoagulasi merupakan proses elektrokimia yang sangat dipengaruhi oleh berbagai variabel elektrokimia seperti potensial, jenis elektroda, waktu kontak, jarak elektroda, dan suhu. Proses elektrokoagulasi diuji dengan tegangan 30 volt dan elektroda besi. Penelitian ini dikembangkan dengan menggunakan (30, 60, 90) menit waktu proses elektrokoagulasi dan (1, 1,5, 2) cm jarak elektroda. Setelah proses elektrokoagulasi, dilakukan proses adsorpsi menggunakan adsorben zeolit dengan massa 30 gram dan waktu adsorpsi 2 jam. Hasil pemrosesan diperiksa untuk nilai COD, TSS, dan pH. Hasil penelitian menunjukkan proses elektokoagulasi-adsorpsi zeolit memiliki efisiensi removal kadar COD hingga 98,73% dan kadar TSS sebesar 99,54% dengan variasi waktu kontak 90 menit dan jarak elektroda 1 cm. Untuk nilai pH didapatkan hasil semakin lama waktu elektrokoagulasi-adsorpsi, semakin tinggi nilai pH yang didapat.
Upaya Pelestarian Ekosistem Karst Gunungsewu Melalui Kegiatan Membatik pada Masyarakat Desa Ginggang, Pracimantoro, Wonogiri, Jawa Tengah Kuswaji Dwi Priyono; Herry Purnama; Alpha Fabela Priyatmono
Abdi Geomedisains Vol. 1, No. 1, July 2020
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (850.578 KB) | DOI: 10.23917/abdigeomedisains.v1i1.98

Abstract

Program Pengabdian kepada Masyarakat di Desa Ginggang, Kecamatan Pracimantoro, Kabupaten Wonogiri bertujuan untuk mendampingi Ibu-ibu PKK dalam proses membatik sekaligus sosialisasi upaya pelestarian ekosistem karst Gunungsewu. Metode yang digunakan adalah pelatihan praktek penciptaan batik Karst Gunungsewu, estetika batik Kawasan Karst Gunungsewu, dan pemasaran produk Desa Batik Karst Gunungsewu, terkait solusi pemasaran produk dengan luaran inovasi dan merek dagang batiknya. Penciptaan Batik Karst Gunungsewu: (1) membuat pola pada kain; (2) penglowongan, proses pemalaman atau pelekatan malam dengan teknik canthing/kuas; (3) pewarnaan batik dengan teknik esek dan teknik celup; (4) Njupiki atau proses pemalaman; (5) pewarnaan kedua untuk melebur dan meratakan; dan (6) pelorodan, perebusan yang dilakukan untuk melepaskan dan membersihkan malam yang melekatpada kain. Dalam kegiatan terkait Estetika Batik, meliputi: (1) pelatihan pemahaman filosofi geomorfologis terbentuknya bentangalam karst dan filosofi pewarnaan; (2) menerjemahkan gambaran morfologis karst; (3)pelatihan nilai tambahan pada motif yang diterapkan yangmemilikimaknapelestarian bentangalam kawasan karst. Selesainya kegiatan, masyarakat dapat membuat produk batik dengan motif bentangalam karst dan memahami pentingnya pelestarian ekosistem karst.
PENGEMBANGAN PRODUKSI PESTISIDA ALAMI DARI Beauveria bassianaDAN Trichoderma sp. MENUJU PERTANIAN ORGANIK Herry Purnama; Nur Hidayati; Eni Setyowati
WARTA LPM WARTA Volume 18, Nomor 1, Maret 2015
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/warta.v18i1.1161

Abstract

Recently the condition of agriculture in Indonesia needs to be addressed. Soil fertility getting damaged due to chemical fertilizer that is not impartial. In addition, the impact of excessive use of synthetic pesticides can cause damage to the ecosystem. Control of plant diseases using biological agents began getting attention because of public concerns due to the use of synthetic chemical pesticides. Biological agents are microorganisms,  both  naturally  occurring  such  as  bacteria,  fungi,  viruses  and protozoa, as well as the results of genetic engineering that are used to control plantpests. Madrasah Diniyah Jumapolo, Karanganyar, has pioneered the manufacture of biological agents to support organic farming although on a small scale. Community service activities undertaken to provide assistance in the improvement of the production process  and  management  improvements.  The  technology  developed  is  the  use  ofbiological pesticides agent isolated from Beauveria bassiana and Trichoderma sp. As a natural insecticide and fungicide. The activities received support from the madrasa and expressed successfully produce biological agents in the proper packaging. In addition to the consumption of madrasa and nearby farmers, pesticide product ofbiological agents is also sold to the public. The selling of products will increase the development of organic farming to produce healthy food also will gain additional income for the madrasa.
Synthesis of Solid Acid Catalyst from Fly Ash for Eugenol Esterification Nur Hidayati; Titik Pujiati; Elfrida B. Prihandini; Herry Purnama
Bulletin of Chemical Reaction Engineering & Catalysis 2019: BCREC Volume 14 Issue 3 Year 2019 (December 2019)
Publisher : Department of Chemical Engineering - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2487.394 KB) | DOI: 10.9767/bcrec.14.3.4254.683-688

Abstract

A series of fly ash-based heterogeneous acid catalysts were prepared by chemical and thermal treatment. Fly ash was chemically activated using sulfuric acid and followed by thermal activation. Characterization methods of XRD, BET, SEM-EDX, and the performance in esterification of eugenyl acetate production was carried out to reveal the physical and chemical characteristics of prepared catalysts. Activated catalyst showed high silica content (96.5%) and high BET surface area of 70 m2.g-1. The catalyst was proven to be highly active solid acid catalyst for liquid phase esterification of eugenol with acetic acid yielding eugenyl acetate. A yield of 43-48% was obtained with activated fly ash catalysts for 90 minutes reaction. These catalysts may replace beneficially the conventional homogenous liquid acid to the eco-friendly heterogeneous one. 
Effect of Graphene Oxide on the Characteristics of sPEEK-Chitosan Membranes for Direct Methanol Fuel Cells Herry Purnama; Indra Viki Hartoko; Muhammad Mujiburohman; Nur Hidayati
Automotive Experiences Vol 3 No 1 (2020)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1008.875 KB) | DOI: 10.31603/ae.v3i1.3039

Abstract

Direct Methanol Fuel Cell (DMFC) can operate at low temperatures, but efficiency and performance are greatly influenced by the material. On the other hand, sulfonated ketone polyether ethers (sPEEK) which have high thermal resistance, ductile, chemical resistance and high mechanical properties, can be combined with chitosan which has good proton conductivity properties. The sPEEK-Chitosan membrane is known to have good mechanical and thermal resistance, but its conductivity is low. The addition of graphene oxide as a filler material can increase the proton conductivity due to its properties. This research was conducted with a completely randomized design of 1 factor to investigate the characteristics of the sPEEK-Chitosan composite membrane as the dependent variable and the addition of graphene oxide solution to the variables 0, 1, 3, 6, and 9% w/w as independent variables. The test results show that the water uptake is in the range of 8.82-33.34%, the swelling degree is in the range of 5.55-20.75%, and the ion exchange capacity is 0.1875-0.2714 meq/g. With this good character, the sPEEK-chitosan membrane with the addition of graphene oxide is a promising candidate for DMFC applications.
PENGARUH TEGANGAN DAN WAKTU PADA PENGOLAHAN LINDI METODE ELEKTROKOAGULASI-ADSORPSI ZEOLIT Rosa Amalia Putri; Herry Purnama
Jurnal Reka Lingkungan Vol 10, No 2 (2022)
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/rekalingkungan.v10i2.135-144

Abstract

Air lindi dapat menjadi pencemar lingkungan jika dibuang begitu saja tanpa adanya pengolahan. Hal ini karena lindi mengandung zat-zat kimia beracun, senyawa organik serta konstituen lainnya yang terlarut dan tersuspensi di dalam tanah. Sifat utama lindi adalah BOD, COD, rasio BOD/COD, padatan tersuspensi, pH, amonia-nitrogen, dan logam berat. Kandungan COD, TSS, dan pH pada air lindi harus memenuhi syarat baku mutu yang telah ditetapkan agar aman ketika dibuang ke lingkungan. Penelitian ini bertujuan untuk mengetahui pengaruh tegangan dan waktu terhadap nilai COD, TSS, dan pH pada air lindi menggunakan metode elektrokoagulasi-adsorpsi zeolit. Penelitian akan dikembangkan dengan variasi tegangan (10, 20, dan 30 volt) dan waktu proses ( 30, 60 , dan 90 menit). Setelah proses elektrokoagulasi, dilanjutkan adsorpsi menggunakan adsorben zeolit dengan massa 30 gram dan waktu adsorpsi 2 jam. Hasil percobaan menunjukkan bahwa kondisi yang optimum diperoleh pada variasi tegangan 30 volt dan waktu proses 90 menit dengan efisiensi penurunan COD sebesar 98.6%, efisiensi penurunan TSS sebesar 99.86%, dan perolehan pH sebesar 9,4.
PENGARUH JENIS BLEACHER DAN WAKTU PEMASAKAN TERHADAP PRODUKSI PULP DARI AMPAS TEBU DENGAN PROSES SODA Rizal Abdul Hakim Amin; Herry Purnama
Jurnal Inovasi Teknik Kimia Vol 7, No 1 (2022)
Publisher : Fakultas Teknik Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/inteka.v7i1.5917

Abstract

Pulp merupakan bahan dasar dalam pembuatan kertas, dimana sebagian besar produksinya mengunakan bahan dasar kayu. Penelitian ini bertujuan untuk mengidentifikasi ampas tebu sebagai bahan baku pembuatan pulp yang ditinjau dari pengaruh jenis bleacher dan lama waktu pemasakan. Jenis bleacher yang digunakan ialah H2O2 dan NaClO dan lama waktu pemasakan yaitu 30 menit, 60 menit dan 90 menit dengan proses soda. Hasil dari penelitian menunjukan adanya pengaruh penggunaan jenis bleacher H2O2 dengan lama waktu pemasakan 90 menit menghasilkan lebih banyak kadar yield pulp yaitu sebesar 29,37%, dibandingkan dengan bleacher NaClO pada waktu pemasakan 90 menit yang hanya menghasilkan kadar yield pulp sebesar 29,05%. Hasil Uji FTIR menunjukkan puncak khas serapan seperti pada gugus fungsi fenolik O-H, gugus serapan keton C=O, gugus ulur alifatik –CH- dan aromatik.. Identifikasi komponen lignin yang dihasilkan yield pulp memiliki spectrum IR yang sesuai dengan spectrum IR komponen lignin standar dan spectrum IR komersial Aldrich dan Kraft.
The Effect Of Particle Size On The Characterization Of Activated Carbon From Tropical Black Bamboo (Gigantochloa Atroviolacea) Envrinda Arief Fauzia; Herry Purnama
Techno (Jurnal Fakultas Teknik, Universitas Muhammadiyah Purwokerto) Vol 22, No 2 (2021): Techno Volume 22 No.2 Oktober 2021
Publisher : Universitas Muhammadiyah Purwokerto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30595/techno.v22i2.10350

Abstract

Activated carbon also known as activated charcoal is a common term for carbon materials, which comprises charcoal. Activated carbon has a good adsorption capacity against gases and pollutants in liquids because of its wide surface. The material used in this research was tropical black bamboo, with the variation of particle size -10+20 mesh, -20+40 mesh, -40+60 mesh and -60+80 mesh.  There are 2 processes to produce activated carbon, i.e. carbonation and activation. In this research, the carbonation is set at 380°C in 1 hour. Then, each size of carbon was activated by H3PO4 9.8% along 24 hours. The analysis conducted were moisture content, ash content, iodine number, and functional group analysis using Fourier Transform Infrared Spectroscopy (FTIR). The smaller particle size, the more pores will be produced and it caused the surface area higher. The results showed that variation of particle size had effect on the characterization and quality of activated carbon, where moisture content is between 10.60 to 4.05%, ash content is 1% to 0.2% and iodine adsorption is between 710 mg/g to 900 mg/g. In FTIR analysis, it showed that all of the samples had O-H, C=C, and C-O functional group.
Co-Authors Alpha Febela Priyatmono Anindita Dyah Palupi Anisa Ur Rahmah Claudia Candra Setyaningrum Eggy Juan Prasetyo Elfrida B. Prihandini ENI SETYOWATI Eni Setyowati Envrinda Arief Fauzia Indra Viki Hartoko Kholisoh Hayati Kuswaji Dwi Priyono Luh Putu Ratna Sundari Malik Musthofa Muhammad Mujiburahman Muhammad Mujiburohman Muhammad Zulfikar Narisa Nur Aini Said Nur Hidayati Rahmah Puspita Sari Rizal Abdul Hakim Amin Rosa Amalia Putri Titik Pujiati Trisnaawati Trisnaawati Wahyu Annisa Mega Brilianti