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All Journal JURNAL ECONOMIA MEDIA KOMUNIKASI TEKNIK SIPIL Jurnal Kesehatan Masyarakat Indonesian Journal of Conservation Yustisia PRIVATE LAW Gemawisata: Jurnal Ilmiah Pariwisata Brawijaya Law Journal : Journal of Legal Studies REPERTORIUM Bioeksperimen: Jurnal Penelitian Biologi Journal of Management and Business Review Bangunan Privat Law ALCHEMY Jurnal Penelitian Kimia EnviroScienteae Journal of Economic, Bussines and Accounting (COSTING) Jurnal Ekonomi & Keuangan Islam Bioedukasi: Jurnal Pendidikan Biologi JAST : Jurnal Aplikasi Sains dan Teknologi JOURNAL OF SCIENCE AND SOCIAL RESEARCH JKPK (Jurnal Kimia dan Pendidikan Kimia) Media Manajemen Pendidikan Indonesian Journal of Advocacy and Legal Services Jurnal Pengabdian kepada Masyarakat Nusantara International Journal on Social Science, Economics and Art Journal of Tourism Economics and Policy Journal Of World Science International Journal Mathla'ul Anwar of Halal Issues Journal of Social And Economics Research Prosidia Widya Saintek Jurnal MIPA dan Pembelajarannya Jurnal Inovasi Teknologi dan Edukasi Teknik Prosiding SEMNAS INOTEK (Seminar Nasional Inovasi Teknologi) Riwayat: Educational Journal of History and Humanities Causa: Jurnal Hukum dan Kewarganegaraan ENVIRO: Journal of Tropical Environmental Research journal of social and economic research Journal of Engineering and Technological Sciences Indonesian Journal of Advocacy and Legal Services
Pranoto Pranoto
Pusat Penelitian Lingkungan Hidup, Lembaga Penelitian dan Pengabdian kepada Masyarakat, Universitas Sebelas Maret Surakarta
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ANALISIS ASPEK YURIDIS KEBIJAKAN RESTRUKTURISASI KREDIT DALAM MASA PANDEMI CORONAVIRUS DISEASE 2019 PADA USAHA MIKRO, KECIL, DAN MENENGAH DI PT. BPR SURYA UTAMA SUKOHARJO Utama, Putri Indrawati; Pranoto, Pranoto
Jurnal Privat Law Vol 13, No 2 (2025): JULI-DESEMBER
Publisher : Fakultas Hukum Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/privat.v13i2.52830

Abstract

This article aims to analyze the juridical aspect nof credit restructuring as attempt of saving non perfoming loan due to Covid-19 in the implementation of credit restructuring in PT. BPR Surya Utama Sukoharjo. This research method is empirical legal research with a qualitative approach. The legal materials used are primary legal materials and secondary legal materials. The technique of collecting data by interviews with employees of PT. BPR Surya Utama Sukoharjo. Data analysis by means of data collection, data reduction, data presentation, data verification and drawing conclusions. The result of research shows that PT. BPR Surya Utama Sukoharjo provides credit restructuring to UMKM debtors through several stages according to Peraturan Otoritas Jasa keuangan Nomor 48/POJK.03/2020. The policy provides justice and legal benefits but does not provide legal certainty. Because there are still uncertain clauses.
Uji Efektivitas dan Karakterisasi Komposit Tanah Andisol/Arang Tempurung Kelapa Untuk Adsorpsi Logam Berat Besi (Fe) Pranoto, Pranoto; Martini, Tri; Maharditya, Winda
ALCHEMY Jurnal Penelitian Kimia Vol 16, No 1 (2020): March
Publisher : UNIVERSITAS SEBELAS MARET (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (638.574 KB) | DOI: 10.20961/alchemy.16.1.33286.50-66

Abstract

Penelitian ini untuk mengetahui kapasitas adsorpsi komposit tanah andisol/arang tempurung kelapa sebagai adsorben logam berat besi (Fe) berdasarkan pada kondisi komposisi, pH dan waktu kontak yang optimum. Tanah andisol diaktivasi dengan larutan NaOH 3 M dan arang tempurung kelapa diaktivasi menggunakan larutan HCl 4 M. Komposit tanah andisol/arang tempurung kelapa dibuat dengan mencampurkan tanah andisol dan arang tempurung kelapa pada variasi komposisi 100:0, 75:25, 50:50, 25:75 dan 0:100 (b/b) Uji adsorpsi terhadap logam besi (Fe) dilakukan pada variasi pH larutan 1, 2, 3, 4, 5 dan 6 serta waktu kontak 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, dan 60 menit dengan sistem batch. Pengukuran konsentrasi akhir pada saat kesetimbangan dilakukan dengan menggunakan Atomic Absorption Spectroscopy (AAS).  Hasil karakterisasi adanya proses aktivasi dan pengompositan ditunjukkan pada spektra Fourier Transform Infra Red (FTIR) yang mengalami pergeseran bilangan gelombang. Karakterisasi pola difraksi X-Ray Diffraction (XRD) yang menunjukkan adanya puncak baru. Hasil analisis Scanning Electron Microscope (SEM) komposit menunjukkan bahwa permukaan adsorben telah ditutupi logam besi (Fe). Pembentukan komposit juga menunjukkan adanya peningkatan luas permukaan dan nilai keasaman komposit. Berdasarkan penelitian ini diperoleh bahwa proses adsorpsi terjadi pada kondisi optimum komposisi komposit tanah andisol/arang tempurung kelapa 75:25 (b/b), pH larutan besi (Fe) 5 dan waktu kontak selama 30 menit dengan kapasitas adsorpsi sebesar 0,54 mg/g dan presentase adsorpsi 91,57%. Isoterm adsorpsi mengikuti isoterm Freundlich dengan nilai R2 sebesar 0,9456.Effectiveness Test and Characterization of Andisol Soil/Coconut Shell Charcoal for Adsorption of Iron (Fe). This research aims to determine the adsorption capacity composite of andisol soil and coconut shell charcoal as the adsorbent of iron (Fe) metal based on the composition condition, pH, and optimum contact time. Andisol soil was activated with NaOH 3 M solution, and coconut shell charcoal was activated with HCl 4 M solution. The composites were made under various composition of andisol soil/coconut shell charcoal of 100:0, 75:25, 50:50, 25:75 and 0:100 (w/w). The adsorption test was done on the pH variation of 1, 2, 3, 4, 5, 6 and used the contact time variation of 5, 10, 15, 20, 25, 30, 35, 40, 45, 50 and 60 minutes in a batch method. The concentration analysis of iron (Fe) metal was done by atomic absorption spectroscopy (AAS). The characterization result of the activation process can be shown on the Fourier transform infrared (FTIR) spectra with the shifting peak. Characterization of X-ray diffraction (XRD) diffractogram showed the emergence of a new peak in andisol soil and coconut shell charcoal. The result of scanning electron microscope (SEM) characterization analysis showed that the surface of the adsorbent was covered in iron. The composite formation also showed an increase in surface area and composite acidity value. Based on the result of the research, it can be concluded that the adsorption process happens in the optimum condition in andisol soil/coconut shell charcoal composition of 75:25 (w/w), pH solution iron (Fe) metal of 5 and contact time of 30 minutes. The adsorption capacity was 0.54 mg/g and 91.57% for adsorption percentage. The isotherm adsorption followed Freundlich isotherm with R2 values 0.9456.
The Effect of Voltage on HDPE Microplastic Removal by Electrocoagulation Process Using Stainless Steel Electrode Syaputra, Mei Dian; Pranoto, Pranoto; Kusumaningsih, Triana
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 9, No 3 (2024): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v9i3.95017

Abstract

Plastic pollution, especially high-density polyethylene (HDPE), is highly concerned with human health and ecosystems. This study investigates the potential of the electrocoagulation process on the removal of HDPE microplastics from water, evaluating the best operating conditions, including the voltage (4, 8, and 12 V), time (40, 80, and 120 minutes), and pH (3, 5, 7, and 9) to achieve the maximum removal efficiency. Coagulation experiments were conducted in the electrolytic cell, using stainless steel and aluminum electrodes, while Na₂SO₄ served as the electrolyte. Because loss of surface area and change in structure was more evident in fragmented flake and granular microplastics (FTIR and SEM analyses), those microplastics were more retained in the swollen coagulant. The alkaline condition also supports the highest removal efficiency of 96.60% when the pH, voltage, and duration were 9, 8V, and 120 minutes, respectively, as experienced in addition to 0.1g of carbon CTO5 in the study. Conclusions Our findings show that electrocoagulation works best at a medium voltage and in alkaline pH conditions. Under low pH conditions, the removal is not notably influenced by the applied voltage, whereas under neutral and alkaline conditions, removal is significantly enhanced with increased voltage. Moreover, the stainless steel electrodes were more corrosion-resistant than aluminum, thus making the process more sustainable. The results indicate that electrocoagulation represents an environmentally friendly, effective microplastic removal method under the right voltage, time, and pH conditions. Such techniques are an effective strategy that helps reduce water contamination and conserve ecosystems.
Sinergisme Campuran Tanah Andisol dan Pasir Foundry sebagai Adsorben Ion Cu (II) pada Limbah Industri Pelapisan Logam Pranoto, Pranoto; Masykur, Abu; Prihanandya, Rania Satwika Putri
ENVIRO: Journal of Tropical Environmental Research Vol 24, No 1 (2022): Maret
Publisher : Center for Environmental Research, LPPM, Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/enviro.v24i1.65039

Abstract

Research has been carried out on the synergism of a mixture of andisol soil and foundry sand as Cu(II) ion adsorbent. This study aims to determine the effect of mixing andisol soil and foundry sand on the absorption of Cu (II) ions and to study the type of isotherm and its adsorption kinetics model. The adsorbent was activated with 3 M NaOH. The acidity of the adsorbent was analyzed using the specific total acidity test method. The final concentration of Cu (II) ions was analyzed using AAS (Atomic Absorption Spectroscopy). The optimum adsorption conditions were obtained based on variations in composition, pH, and contact time. The adsorbent was made with variations in the composition of andisol: foundry sand 100:0, 75:25, 50:50, 25:75 and 0:100 (w/w). The effect of adsorption conditions was carried out by varying the pH of the copper (Cu) solution from 3-7. The effect of contact time was varied at 15-135 minutes with 15 Minute intervals.
Co-Authors Abu Masykur Achmad Chaerul Muslim Adi Saputra, Fuad Afriadi, Fiqih Aji Suraji AL. SENTOT SUDARWANTO Ali Akbar Amilla, Agustin Kinthan Anang Ansyori Andyko, Mohammad Ari Handono Ramelan Arifin, Achmad Saiful Ashadi Asti Nur Aryanti Ayub Torry Satriyo Kusumo Bambang Djatmiko Bambang Revantoro, Nemesius Bambang Supriyanto Boedi Rahardjo Boedya Djatmika Calvin Oktaviano Adinugraha, Calvin Oktaviano Chyntia Damayanti Darmanijati, Maria Roosa Srah Desi Suci Handayani Dian Endah Kusuma Astuti, Dian Endah Dwijaningtyas, Srinata Evi Widowati Galih Syahdandi, Alviando GULO, Sokhimano Haniek Listyorini Harlita Harlita HARRIS, Erna Haryono Haryono Henri Siswanto Hilda Yuwafi Nikmah Ibnu Rois Ika Salsabila Nurahida Inayati Inayati ITOK DWI KURNIAWAN Kukuh Tejomurti, Kukuh Kundori Kurniawan, Eka Yudha Kurniawaty, Erlita Kusnul Khotimah LAHAGU, Agusman Lahagu, Aristo LEDEWARA, Kornelia Esyi Livansyah, Angel Maharditya, Winda MAULIDHIYA, Adisti Muhadisin, Muhadisin Muhammad Aris Ichwanto Mulyanto Mulyanto Mundilarno Mundilarno, Mundilarno Muttaqin, Ridlwan Najib Imanullah, Najib Najmuddin, Najmuddin Nina Mistriani Novina Eky Dianti Nur Amin Solikhah, Nur Amin Nurdina prasetyo Okisari, Irma Nurul Pati, Umi Khaerah Prabowo Prabowo Prabowo, Setyo Prabowo, Setyo Pramesty, Dihar Alfian Prihanandya, Rania Satwika Putri Pujiyono Pujiyono Putri, Lailvie Cahyaning Remandha, Resti Rochman, Salamur Rudi Prasetya Timur Saputra, Jumadil Saraswati, Safitri SARUMAHA, Kasdim Sauzan Vidya Rastratama Mitra Sholihah, Zuliana Ayu Siswahyudi, Dwi Slamet Santosa Soehari, Hartoyo Sri Budiastuti SUBARA, Ari Sukrisno, Sukrisno Sunarto Sunarto Supriyanto, Sapto suraji suraji Syaputra, Mei Dian Tirta, Adina Mutiara Tri Martini Triana Kusumaningsih Trisnanda, Raviendo Utama, Putri Indrawati Viola Malta Ramadhani Vita Ayu Kusuma Dewi Waruwu, Agustinus Wicaksono, Mochammad Hendy Wijanarko, Yudistiar Wintara, Jane Ayu Wuntu, Gana Yulianti, Monica Zakki Adhliyati, Zakki Zamzami, R. Mohd.