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All Journal International Journal of Renewable Energy Development Jurnal AGROTEKNOLOGI Jurnal Ilmu Dasar BERKALA SAINSTEK Pelita Perkebunan Jurnal Kimia Mulawarman UNEJ e-Proceeding Jurnal Kimia Riset Jurnal Pemberdayaan Masyarakat Madani (JPMM) ALCHEMY Jurnal Penelitian Kimia J-Dinamika: Jurnal Pengabdian Kepada Masyarakat Jurnal Abdi: Media Pengabdian Kepada Masyarakat Computational and Experimental Research in Materials and Renewable Energy (CERiMRE) Indonesian Chimica Letters Warta LPM Molekul: Jurnal Ilmiah Kimia International Journal of Renewable Energy Development Engagement: Jurnal Pengabdian Kepada Masyarakat al Kimiya : Jurnal Ilmu Kimia dan Terapan

Bambang Piluharto

Department Of Chemistry, Universitas Jember, Jl. Kalimantan 37 Kampus Tegalboto, Jember 68121

Author-ID : 2975965

Religion Agriculture, Biological Sciences & Forestry Arts Humanities 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 Health Professions Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

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CHITOSAN-BASE COAGULANTS IN COAGULATION-FLOCCULATION OF KAOLIN SUSPENSION Bambang Piluharto; Mufrihah Nurhayati; Asnawati Asnawati
JURNAL KIMIA MULAWARMAN Vol 16 No 1 (2018)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v16i1.668

Coagulation-flocculation is one of the waste water treatments using coagulant/flocculants agent. Using coagulant/flocculants based on natural polymers were many used due to many available, renewable source, and environment friendly. One of that coagulant/flocculants was chitosan that can be produced through deacetylation of chitin. Amino groups in the chitosan structure play important role in the coagulant/flocculants process. The aim of research is using chitosan-based coagulants in the coagulation-flocculation of kaolin suspension. In here, there were two coagulants type, first, single coagulant which chitosan with different molecular weight added alone in kaolin suspension. Second, mix coagulants which chitosan aid with alum in kaolin suspension. As the result, functional group analysis showed that chitosan with different molecular weight have the same functional groups. Increasing molecular weight of chitosan increase NH2 groups and degree of deacetylation. The removing turbidity of kaolin suspension showed that increasing molecular weight chitosan increase removing turbidity of kaolin suspension. Using double coagulant (chitosan and tawas) have the removing turbidity greater than single coagulant.

Optimisation of Extractant and Extraction Time on Portable Extractor Potentiometric Method for Determining Phosphate in Soil Anggia Rose Sukaton; Siswoyo Siswoyo; Bambang Piluharto
UNEJ e-Proceeding 2016: Proceeding The 1st International Basic Science Conference
Publisher : UPT Penerbitan Universitas Jember

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

Phosphorus is one of the nutrients which is needed by plants in large amounts. Fertilisation is a popular solution for supplying a sufficient amount of phosphorus in the soil. However, phosphorus can pollute water bodies and lead to eutrophication if fertilisation is carried out without considering prior information about the soil condition. Thus, analysis of phosphorus needs to be done before fertilisation. This paper is reporting a result in development an alternative strategy for analysing the phopsphorus in soil agriculture using potentiometric method. The aims of this research were to find the optimum condition of extractant and extraction time for determining phosphate, one form of phosphorus, in soil and evaluate a portable extractor potentiometric (PEP) method for determining phosphate in soil. Measurement of phosphate was undertaken by using cobalt working electrode, silver-silver chloride reference electrode and 0,025 M potassium hydrogen phtalate at pH 4 as ionic strength adjuster. Evaluation of PEP method was carried out by comparing this method with both the conventional potentiometric (CP) and the standard spectrometric (SS) methods. It was found that Kelowna was the optimum extractant for measuring phosphate potentiometrically in soil by CP method. Extraction time of 10 minutes was the optimum time for extracting phosphate in soil using Kelowna extractand solution. The result also shown that correlation between PEP and CP method was 0.883 whereas correlation between PEP and SS method was 0.924. Linear response characterisation of both PEP and CP method has obtained slope of (-28.47) and (-23.67) mV per decade respectively, in other hand the PEP and CP has resulted the detection limit 0.72 ppm and 0.83 ppm respectively. Repeatability for both PEP and CP method were less than 5%.

Membran Blend Kitosan/Poli Vinil Alkohol (PVA): Pengaruh Komposisi material blend, pH, dan Konsentrasi bahan Pengikat Silang Bambang Piluharto; A Sjaifullah; I Rahmawati; Erix Nurharianto
Jurnal Kimia Riset Vol. 2 No. 2 (2017): Desember
Publisher : Universitas Airlangga

AbstrakMembran blend biodegradabel dengan kestabilan termal dan mekanik yang berasal dari gabungan kitosan dan PVA telah dihasilkan melalui dua tahapan. Pada tahap pertama dilakukan proses pelarutan kitosan dan poli vinil alkohol dan selanjutnya pencampuran kitosan/PVA dan asam oksalat sebagai agen pengikat silang. Asam asetat dan air dipilih sebagai pelarut untuk kitosan dan PVA. Beberapa variasi dalam proses seperti perbandingan konsentrasi kitosan:PVA, konsentrasi agen pengikat silang dan pH buffer, dijadikan sebagai parameter pada penelitian ini. Kerapatan hidrogel dan kuat tarik mengalami kenaikan seiring dengan peningkatan konsentrasi agen pengikat silang dan PVA dengan konsentrasi kitosan paling rendah. Namun derajat swelling memiliki trend yang berbeda dimana naiknya derajat swelling diperoleh seiring dengan peningkatan konsentrasi kitosan dengan kondisi konsentrasi agen pengikat silang dan PVA paling rendah. Keberhasilan proses blending dan ikat silang ditunjukkan dari hasil spektra infra merah dimana analisa spektrum infra merah dari hidrogel kitosan murni dan hidrogel kitosan/PVA menunjukkan kenaikan intensitas serapan pada daerah amida (1600 cm-1 sampai 1670 cm-1), hal ini menguatkan dugaan terbentuknya ikatan silang antara asam oksalat sebagai crosslinker dengan kitosan. Kata kunci: membran blend, kitosan/PVA, asam oksalat, pengikat silang. AbstractBiodegradable blend membranes with thermal and mechanical stability based on combination of chitosan and PVA have been produced through two stages. In the first stage, chitosan and PVA are dissolved and further mixing chitosan/polyvinyl alcohol with oxalic acid as crosslinking agents. Acetic acid and water are selected as solvents for chitosan and PVA. Some variations in the process such as comparison of chitosan:PVA concentration, concentration of crosslinking agent and pH of buffer, are used as parameters in this study. The hydrogel density and tensile strength increased with increasing concentration of crosslinking agent and PVA with the lowest concentration of chitosan. However, the degree of swelling has a distinct trend in which the increase of degree of swelling is obtained along with the increase of chitosan concentration with the lowest concentration of crosslinking agent and PVA. The success of the blending and crosslinking process is shown by the results of infrared spectra where infrared spectrum analyzes from purified chitosan hydrogels and chitosan/chloride hydrogels show an increase in absorption intensity in the amide area (1600 cm-1 to 1670 cm-1), this reinforces the alleged crosslinking formation between oxalic acid as crosslinker and chitosan. Keywords: blend membrane, chitosan: PVA, crosslinker.

CHARACTERIZATION OF SULFONATED POLYSULFONE/BENTONITE HYBRID MEMBRANES Bambang Piluharto; Imam Syafi’i; R. Indahsari; Tanti Haryati
Jurnal ILMU DASAR Vol 13 No 1 (2012)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Sulfonated polysulfone membrane is one of the alternative membranes as replacing Nafion membrane for the fuel cell application. This membrane was prepared by introducing sulfonic group in the polysulfone structure backbone, so that provides the ionic membrane. However, more ionic groups in the SPSF membrane lead to loss mechanical stability. This study aims to prepare the hybrid membrane from SPSF and bentonite. In here, various of bentonite concentrations were used as variable to study water uptake and ion-exchange capacity properties. As the results, increasing bentonite concentrations lead to increase water uptake and ion-exchange capacity. By the functional group analysis, proved that adding bentonite in SPSF did not change structure of SPSF, means that interaction between SPSF and bentonite were physical interactions.

Polysulfone Membrane with UV-Photografting Technique and it Application at Soya Milk Filtration Processing Bambang Piluharto; Achmad Sjaifullah; Istiqomah Rahmawati; Maryanto Maryanto
Jurnal ILMU DASAR Vol 14 No 1 (2013)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

In the separation process of solution containing protein, interaction between membrane surface and protein can cause fouling irreversibely. So, efficiency of filtration process will decline. In this research, to improve the effeciency of filtration was done by modification of membrane using UV-photografting technique. Acrylic acid had been introduced topolysulphone membrane via this technique. The hydrophylic membrane was obtained. The membrane performance was evaluated in soymilk fouling test. The first step of research had obtained PSF membrane optimation about PSF 18%. In second step, the research was focused on the modification and characterization of PSF membrane by UV-Fotografting tehchnique. In this technique, monomer concentration and radiation time was used as variable. As the result, PSF membrane had been modificated succesfully by UV- photografting tehchnique with optimum condition in 15 minutes time radiation and concentration of acrylic acid 5%. Performance of modified membranes (flux and permselectivity) were better than unmodified membranes. The fouling test showed that the modified membranes have reduced fouling degree significantly. Keywords : Ultrafiltration membrane, UV-photografting, flux and permselectivity, fouling

Identification of Ibuprofen, Ketoprofen and Diclofenac by Using Test Strip Based on Imobilized Spesific Reagent on Nata De Coco Membrane Karisma Wulan Ningtyas; Zulfikar Zulfikar; Bambang Piluharto
Jurnal ILMU DASAR Vol 16 No 2 (2015)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Identification of ibuprofen, ketoprofen and diclofenac can be done by using simple method, it is called test strips. Test strip is made by immobilized specific reagents with entrapment technical on membrane matrix, which the used membrane nata de coco. Immobilization reagents with entrapment techniques aimed to trap reagent molecules in the space between the supporting material.The success of this imobilization can be seen from membran changing color after additional reagent and there is no leeching after additional sample on membrane. The used reagent for this identification is methyl red for ibuprofen and ketorpofen, copper acetate for ibuprofen, potassium iodide for ketorofen and mandelin for diclofenac. From the testing result can be seen that potassium iodide is the most specific reagent compare with the other threee other reagents. By using tes strip arranged with the strip made by this imobilization, test srtrip can be used to differentiate the tree other standard samples. Keywords: entrapment, nata de coco membrane, reagent spesific, test strip.

Pelatihan Pembuatan Briket Berbasis Limbah Pertanian Bagi Pemuda Karang Taruna Karya Muda, Desa Pontang, Kecamatan Ambulu Kabupaten Jember Bambang Piluharto; Asnawati; Ahmad Roziq
J-Dinamika : Jurnal Pengabdian Masyarakat Vol 5 No 2 (2020): Desember
Publisher : Politeknik Negeri Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25047/j-dinamika.v5i2.1437

Karang Taruna Karya Muda adalah wadah dan pengembangan pemuda dari desa Pontang, kecamatan Ambulu Kabupaten Jember yang bergerak khususnya dalam bidang kesejahteraan sosial. Program kegiatan dari karang taruna selama ini lebih banyak membantu program dari pemerintahan desa seperti gotong royong, keolahragaan dan kegiatan peringatan hari besar nasional dan keagamaan. Kegiatan yang diarahkan pada tumbuhnya kewirausahaan bagi para pemuda belum banyak dilakukan. Wilayah desa Pontang sebagai daerah pertanian dan memiliki jumlah pemuda usia produktif yang banyak memiliki potensi untuk mengembangkan suatu usaha berbasis sumber daya lokal. Kegiatan pengabadian yang dilakuan oleh tim ini bertujuan mengembangkan keterampilan pemuda karang taruna melalui pembuatan briket dengan bahan baku utama limbah pertanian yang melimpah di desa Pontang. Bentuk kegiatan ini berupa penyuluhan dan pelatihan pembuatan briket. Kegiatan penyuluhan dilakukan dengan metode ceramah tentang potensi pemuda untuk berwirausaha, potensi limbah pertanian menjadi material yang bernilai ekonomis dan briket sebagai alternatif bahan bakar pengganti minyak bumi. Sementara pelatihan ditekankan pada pembuatan briket menggunakan limbah pertanian sebagai bahan bakunya. Setelah kegiatan pelatihan selesai kemudian dilakukan kegiatan pendampingan sampai perserta pelatihan yait u pemuda karang taruna mahir membuat briket. Hasil kegiatan yang diperoleh adalah pemuda karang taruna mendapatkan pengetahuan tentang potensi-potensi limbah pertanian menjadi barang yang bernilai ekonomi dan briket merupakan salah satu potensi tersebut. Selain itu pemuda juga mendapatkan ketrampilan pembuatan briket menggunakan bahan-bahan berbasis limbah pertanian.Luaran pelatihan ini berupa produk briket yang dibuat secara mandiri oleh pemuda karang taruna. Hasil pelatihan ini diharapkan dapat meningkatkan keterampilan wirausaha pemuda karang taruna khususnya dalam pembuatan briket dan mendorong para pemuda karang taruna untuk berwirausaha.

Technical Guidance on Noni Cultivation (Morinda citrifolia, L) in Bagorejo Hamlet, Gumukmas District, Jember Regency : Technical Guidance on Noni Cultivation (Morinda citrifolia, L) in Bagorejo Hamlet, Gumukmas District, Jember Regency R. Abdoel Djamali; Naning Retnowati; Ancah Caesarina Novi Marchianti; Bambang Piluharto; Iswahyono Iswahyono; Deltaningtyas Tri Cahyaningrum; Riska Rian Fauziah; Nurud Diniyah
J-Dinamika : Jurnal Pengabdian Masyarakat Vol 7 No 3 (2022): Desember
Publisher : Politeknik Negeri Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25047/j-dinamika.v7i3.3641

Pada situasi pandemi seperti saat ini permintaan terhadap produk obat herbal mengalami peningkatan. Buah mengkudu merupakan salah satu tanaman obat herbal yang dipercaya masyarakat memiliki banyak manfaat bagi kesehatan. Salah satu UMKM yang memproduksi obat herbal sari buah mengkudu adalah UD ZAM yang didirikan oleh Akhmad Muadi. Lokasi produksi berada di Jalan Tembokrejo Gang I Dusun Ampeldendo, Desa Bagorejo Kecamatan Gumukmas, Jember, Jawa Timur. Bahan baku buah mengudu diperoleh dari lahan sendiri dan pasokan petani mitra di wilayah Jember dan sekitar. Tujuan kegiatan ini meningkatkan pengetahuan dan keterampilan dalam budidaya tanaman mengkudu yang terstandarisasi yang disebut GAP (Good Agriculture Practice). Metode yang digunakan dalam bimbingan teknis ini yakni survey, klasikal dalam penyampaian materi pelatihan, dan praktek langsung di lahan budidaya mengkudu. Kesimpulan dari hasil kegiatan ini yakni: (a) kegiatan bimbingan teknis ini yang diikuti lebih 30 petani mitra berjalan sukses dan lancar yang ditunjukkan kesungguhan dan interaksi dua arah yang cukup intensif, (b) evaluasi akhir hasil kegiatan menunjukkan bahwa petani mitra telah memahami dengan baik tentang prosedur GAP yang ditunjukkan dengan kemampuan dalam mendeskripsikan, dan mempraktekkan prosedur/teknik budidaya mengkudu secara benar dan tepat, dan (c) menyerahkan 50 batang bibit mengkudu unggul kepada petani mitra

Utilization of Cassava Peel (Manihot utilissima) Waste as an Adhesive in the Manufacture of Coconut Shell (Cocos nucifera) Charcoal Briquettes Bayu Rudiyanto; Intan Rida Agustina; Zeni Ulma; Dafit Ari Prasetyo; Miftah Hijriawan; Bambang Piluharto; Totok Prasetyo
International Journal of Renewable Energy Development Vol 12, No 2 (2023): March 2023
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2023.48432

Coconut shells and waste cassava peels could be used as the main raw material for biomass briquettes for alternative energy sources in Indonesia. This study aims to analyze the quality of briquettes based on a coconut shell and cassava peel adhesive through proximate analysis with three treatment ratio variations. The ratio of coconut shell to cassava peel used varied from V1 (75%:25%), V2 (70%:30%), and V3 (65%:35%). Based on the result, the charcoal briquettes produced have a density of 0.61 gram/cm³-0.66 gram/cm³, water content of 5.51%-7.85%, ash content of 1.50%-2.86%, combustion rate of 0.021 gram/s-0.026 gram/s, and the calorific value of 6,161 cal/gram-6,266 cal/gram. However, all the treatment variations appropriate the SNI 01-6235-2000, the national standard of Indonesia for the quality of charcoal briquette, which includes the calorific value (>5,000 cal/gram), moisture content (<8%), and ash content (<8%). Briquettes with the best quality were generated by V1 with a density of 0.66 gram/cm³, water content of 5.51%, ash content of 1.50%, combustion rate of 0.026 gram/s, and calorific value of 6,266 cal/gram. Furthermore, briquette material from the coconut shell waste with natural cassava peel adhesive can be feasible as an alternative fuel.

Aktivitas Antikanker Nanokapsul Ekstrak Mengkudu (Morinda citrifolia L.) dengan Pengujian in Vivo pada Fibrosarkoma Mencit Jantan Balb/c Nur Aisyah; Lulus Kartika Ningtias; Ancah Caesarina Novi Marchianti; Bambang Piluharto; Deltaningtyas Tri Cahyaningrum; Naning Retnowati; Nurud Diniyah; Iswahyono Iswahyono; Riska Rian Fauziah
JURNAL AGROTEKNOLOGI Vol 16 No 02 (2022)
Publisher : Faculty of Agricultural Technology, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/j-agt.v16i02.31182

Noni (Morinda citrifolia L.) is one of the many herbs which known as an anticancer agent. Nanoencapsulated form of noni extracts could help the body absorption and able to inhibit the proliferation of cancer cells in vitro. This study was conducted to examine the anticancer activity of nanoencapsulated noni extracts in vivo as the anti-proliferation agent of cancer cells. Noni extract was obtained by maceration method using water as a solvent. The nanocapsule of noni extracts was made using the ionic gelation method by magnetic stirrer with the speed of 1500 rpm. In vivo anticancer activity test was conducted in Balb/c male mice by comparing the treatment of nanoencapsulation noni extracts and non-encapsulated extracts. The result showed that the nanoencapsulated noni extracts have a particle size of 27-59 nm. Percent of inhibition of nanocapsule on cancer cells (specifically on fibrosarcoma of Balb/c male mice) were equal to 54.75% (P2), while non-encapsulated is 49.72% (P1). Nanocapsule of noni extracts has anticancer activity better than non-encapsulated form on fibrosarcoma of Balb/c male mice. Keywords: anticancer, nanoencapsulation, noni extract

Co-Authors A Sjaifullah Abdulloh Abdulloh Achmad Sjaifullah Achmad Subagio Achmad Subagio Afif Difa Asy Syafiq, Muhammad Agus Triono Agus Wedi Pratama Ahmad Roziq Ahmad Turidi Ahmad, Zakiyyah Ilma Anak Agung Istri Ratnadewi Ancah Caesarina Novi Marchianti Ancah Caesarina Novi Marchianti Anggia Rose Sukaton Aprilia, Selvina Rizky Apriliasari, Yekti Asnawati Asnawati Asnawati Asnawati Bayu Rudiyanto Busroni, Busroni D. Iwan Setiawan Dafit Ari Prasetyo Dea putri Ismawardani Deltaningtyas Tri Cahyaningrum Deltaningtyas Tri Cahyaningrum Dharmawan, Aditya Dwiki Diah Ayu Nur Sholehah Djamali, R. Abdoel dwi ananda, Tinok Dwi Indarti Dwi Jayanti, Denik Dwi Kusuma Wahyuni Dwiyanti, Inayatus Nur Erix Nurharianto Fatwa, Muhammad Iqbal Firdaus Ubaidillah, Firdaus Firmanto, Hendy HARDIAN SUSILO ADDY Henry Adi Syahputra Sidabutar Hermanto, Toto I Rahmawati Ika Oktavianawati Imam Syafi’i Indarto Indarto Indarto Indarto Intan Rida Agustina Irsyam, Mahrus Istiqomah Rahmawati Iswahyono Iswahyono Iswahyono Iswahyono Karisma Wulan Ningtyas Khofifah, Marhamatul Lulus Kartika Ningtias Mahrus Irsyam Maryanto - Maryanto Maryanto Miftah Hijriawan Moch. Shulthoni, Moch. Mufrihah Nurhayati Muhammad Reza Naning Retnowati Naning Retnowati Nida Andriana Nur Aisyah Nurud Diniyah Nurud Diniyah Purkan Purkan, Purkan Purwo Handoko, Donatus Setyawan R. Abdoel Djamali R. Abdoel Djamali R. Indahsari Riska Rian Fauziah Riska Rian Fauziah S. Purwo Handoko, Donatus Siswoyo Siswoyo Siti Rofiqoh, Siti Sofijan Hadi Sri Sumarsih Sudarko Sudarko, S. Sulistyo, Yudi Aris Sulistyowati, Fitri Syahbanu, Intan Syahrul Khairi Syarifatul Lailah Tanti Haryati Tinok Dwi Ananda Totok Prasetyo Tri Mulyono Tri Mulyono Ula, Mohammad Munal Ummami, Riza Wulandari, Melysa Wuryanti Handayani Yeni Maulidah Muflihah Yudi Aris Sulistiyo, Yudi Aris Yulvia, Ana Zeni Ulma Zulfikar Zulfikar

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