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Schiff Base Synthetic Coating from The Chitosan Acylation of Green Mussel Shell (Perna viridis) as A Corrosion Inhibitor in Reinforcing Steel Lukvy, Wisely; Yuwono, Arief Sabdo; Putra, Heriansyah
Jurnal Teknik Sipil dan Lingkungan Vol. 9 No. 1: April 2024
Publisher : Departemen Teknik Sipil dan Lingkungan, IPB University and The Institut of ENgineering Indonesia (PII), Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jsil.9.1.51-60

Reinforced concrete is widely used in construction implementation in Indonesia. The use of reinforcing steel as a structural material has the potential to experience corrosion. A Schiff base is one of the compounds considered a potential corrosion inhibitor. Green mussel (Perna viridis) contains chitosan which can produce chitosan Schiff base. This study aimed to analyze chitosan, Schiff base, optimum inhibitor concentration, and morphological structure. This research consisted of extraction and acylation transformation stages, corrosion rate measurement, and SEM testing. This research resulted in the degree of deacetylation of chitosan from the FT-IR spectra of 53.71%. Chitosan Schiff base from green mussel shells was successfully synthesized as much as 188.41 g. The optimum corrosion rate is found at the inhibitor concentration of 1500 ppm, with the highest efficiency level of 91.84%. The results of SEM testing on treated steel samples yielded fewer corrosion products in the form of uniform corrosion and pitting corrosion than untreated steel samples. This result shows that the chitosan Schiff base inhibitor from the optimum concentration of green mussel shells effectively inhibits the corrosion rate.

Sistem Perhitungan Konsentrasi Debu Jatuh dan TSP (Total Suspended Particulate) di Udara dalam Analisis Dampak Lingkungan di Indonesia Yuwono, Arief Sabdo
Policy Brief Pertanian, Kelautan, dan Biosains Tropika Vol 3 No 1 (2021): Policy Brief Pertanian, Kelautan dan Biosains Tropika
Publisher : Direktorat Kajian Strategis dan Reputasi Akademik IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/agro-maritim.0301.132-136

Sistem perhitungan konsentrasi debu jatuh (dustfall) dan total partikel tersuspensi (total suspended particulate, TSP) dalam kegiatan analisis dampak lingkungan di Indonesia selama ini masih didasarkan pada persamaan dari luar negeri yang tidak sesuai dengan kondisi Indonesia. Kedua parameter tersebut merupakan parameter utama untuk menggambarkan perubahan kualitas udara yang terjadi akibat kegiatan manusia (antropogenik) dan akibat kondisi alami (natural). Kedua parameter wajib disajikan dalam menggambarkan perubahan kualitas udara dalam analisis dampak lingkungan. Berdasarkan serangkaian penelitian yang dilakukan di Indonesia (Yuwono et al., 2014-2018), perhitungan konsentrasi debu jatuh dan TSP telah bisa menggunakan persamaan empiris yang dikembangkan khusus untuk kondisi di Indonesia. Serangkaian persamaan telah disusun dalam sebuah spreadsheet sederhana yang bisa diimplementasikan sesuai jenis tanah di Indonesia. Dengan sistem ini, prakiraan konsentrasi debu jatuh dan TSP yang akan terjadi akibat pelaksanaan pembangunan dapat diprakirakan dengan akurat dan sesuai baku mutu di Indonesia.

Wujudkan Kampus Berkelanjutan melalui Regenerative Waste Governance IPB, BPKB; Mardiana, Rina; Yuwono, Arief Sabdo; Putra, Heriansyah; Febrita, Joana; Amperanoto, Agus; Ekayani, Meti; Purwanto, Budi; Hudaya, Aang; Dwiyanti, Fifi Gus; Qayim, Ibnul; Utami, Annisa Dwi; Sita, Rai; Mustika, Aulia Andi; Abidin, Zaenal; Sari, Windi Mayang; Rifnadhi, Bayu; Rukmana, Adi
Policy Brief Pertanian, Kelautan, dan Biosains Tropika Vol 6 No 3 (2024): Policy Brief Pertanian, Kelautan dan Biosains Tropika
Publisher : Direktorat Kajian Strategis dan Reputasi Akademik IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/agro-maritim.0603.959-966

IPB University dalam mengimplementasikan visi sebagai perguruan tinggi inovatif dan berkelanjutan, mengadopsi pendekatan regenerative waste governance (tata kelola sampah regeneratif). Pendekatan ini tidak sekedar menitikberatkan pada pengelolaan sampah sebagai beban masalah, melainkan bertujuan menciptakan dampak positif yang bersifat regeneratif terhadap lingkungan dan masyarakat. Beberapa aspek kunci meliputi penerapan model tiga lini tata kelola, pengembalian bahan, desain berkelanjutan, restorasi ekosistem, pemberdayaan komunitas, inovasi teknologi berkelanjutan, siklus hidup produk, dan upaya edukasi peningkatan kesadaran. Tata kelola sampah IPB didukung oleh regulasi dan kebijakan yang telah diimplementasikan, mencakup larangan penggunaan kemasan styrofoam dan plastik, pengurangan sampah kertas, pemilahan sampah, dan program Green Campus. Analisis SWOT (Strengths, Weakness, Opportunities, and Threats) telah mengidentifikasi kekuatan, kelemahan, peluang, dan ancaman dalam pengelolaan sampah IPB. Rendahnya penegakan hukum dan kesadaran warga IPB terkait pemilahan sampah merupakan aspek kelemahan dalam tata kelola sampah IPB saat ini. Peluang peningkatan tata kelola sampah IPB melalui budidaya maggot dan pengembangan produk bernilai bisnis dari sampah anorganik memiliki potensi tinggi untuk dikembangkan. Sementara itu, ancaman terkait kesehatan, penurunan kualitas lingkungan, dan reputasi keberlanjutan IPB memerlukan perhatian khusus. Perbaikan pada pengelolaan limbah B3, pembaruan landasan hukum, dan peningkatan kesadaran warga IPB menjadi hal penting dalam upaya IPB meningkatkan tata kelola sampah regeneratif.

Insect’s Bioconversion of Organic Waste: A Systematic Literature Review and Bibliometric Analysis Rochimawati, Nur Riana; Yuwono, Arief Sabdo; Jayanegara, Anuraga; Sintawardani, Neni
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol 15 No 3 (2025): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Pusat Penelitian Lingkungan Hidup, IPB (PPLH-IPB) dan Program Studi Pengelolaan Sumberdaya Alam dan Lingkungan, IPB (PS. PSL, SPs. IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.15.3.493

Food waste, a type of solid waste is a significant environmental concern, particularly in developing nations. The utilization of insects as bioconversion agents is becoming more significant due to rapid population expansion and the rise in organic waste on a global scale. The research on waste bioconversion utilizing insects is now limited to a few bug species and lacks long-term strategy and sustainability considerations. This study conducted bibliometric analysis and a comprehensive literature evaluation on studies related to waste bioconversion processes utilizing insect bioconversion agents in publications from 2013 to 2023. A bibliometric analysis will offer an overview of research and collaboration trends in this sector, while a systematic literature review (SLR) will provide summaries on selected issues from relevant works. Studies on waste bioconversion using insects have primarily focused on key factors such as the type of organic waste, the rate of waste reduction achieved, the formulation of substrates tailored to insect nutritional needs, and the downstream utilization of insect biomass as feed or for energy production (biogas, biodiesel, and biomass fuel). Most of the existing research centers on the Black Soldier Fly (169 publications), which has demonstrated high efficiency in reducing organic waste. This concentration on BSF highlights a research gap and potential opportunities for investigating other insect species like crickets, mealworms that may offer different advantages in specific waste types or environmental conditions.

ANALISIS BEBAN EMISI UDARA PRIMER DI PROVINSI BANGKA BELITUNG Elviana, Elviana; Yuwono, Arief Sabdo; Chadirin, Yudi
Jurnal Teknik Sipil dan Lingkungan Vol. 1 No. 2: Agustus 2016
Publisher : Departemen Teknik Sipil dan Lingkungan IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jsil.1.2.91-99

Economic growth in Bangka Belitung Province is likely to increase. Such improvements have implications on the growing need for fossil fuels from various sectors that cause changes in air quality. Ministry of the Environment recommends doing an inventory of emissions. The load of emissions of sulfur dioxide (SO2), nitrogen oxides (NOx), carbon monoxide (CO), and particulate matter (PM10) is the primary air pollutants dangerous to be inventoried. The average load of SO2 emission Bangka Belitung province of 6,045.89 tons/year and the largest contributor came from the industrial sector (41.43%). Load of NOx emissions by 16,324.84 tons/year, CO amounted to 75,639.01 tons/year, and PM10 amounted to 2,750.66 tons/year. The transportation sector is the largest contributor of load NOx emissions (62.11%), CO (96.58%), and PM10 (79.93%). The largest contributor of load of emissions SO2, NOx, CO, and PM10 in Bangka Belitung is Bangka. Bangka Belitung Provincial Government planned several strategies to reduce the load of emissions include smart driving, energy audit, centralized power plants, and the conversion of kerosene to LPG in the domestic sector. With the implementation of this strategy is expected to reduce load of emissions by 30%.

Formulasi Indeks Kenyamanan Udara dalam Ruang pada Tempat Ibadah: Formulation of Indoor Air Comfort Index for Worship Buildings Ramdani, Ahmad; Sabdo Yuwono, Arief
Jurnal Teknik Sipil dan Lingkungan Vol. 7 No. 2: Agustus 2022
Publisher : Departemen Teknik Sipil dan Lingkungan IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jsil.7.2.171-180

Two main functions of public facilities are providing services to residents and maintaining environmental quality. There is currently no index that states the parameters of indoor air comfort quantitatively for worship buildings. The comfort for a building will affect the physical and mental health of its occupants. The research has identified and formulated an indoor air comfort index for worship buildings based on temperature, noise, odour, relative humidity, and light intensity that can be the best recommendations for district/city governments. The research has conducted using qualitative and quantitative methods. The qualitative method is based on filling the questionnaires by respondents and the quantitative method is based on the measurement of five parameters at the research site. The formulation obtained from the results of the weighting of the questionnaire and the index for each parameter. The indoor air comfort index is obtained based on five levels: uncomfortable, less comfortable, quite comfortable, comfortable, and extremely comfortable. The results of the research place of worship gave an index value of 4.0 at Tridharma temple that has declared comfortable, an index value of 2.9 at Church of Immanuel that have declared quite comfortable, and a range of index values of 3.1-3.8 at seven other sites that has declared comfortable.

Schiff Base Synthetic Coating from The Chitosan Acylation of Green Mussel Shell (Perna viridis) as A Corrosion Inhibitor in Reinforcing Steel Lukvy, Wisely; Yuwono, Arief Sabdo; Putra, Heriansyah
Jurnal Teknik Sipil dan Lingkungan Vol. 9 No. 1: April 2024
Publisher : Departemen Teknik Sipil dan Lingkungan IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jsil.9.1.51-60

Reinforced concrete is widely used in construction implementation in Indonesia. The use of reinforcing steel as a structural material has the potential to experience corrosion. A Schiff base is one of the compounds considered a potential corrosion inhibitor. Green mussel (Perna viridis) contains chitosan which can produce chitosan Schiff base. This study aimed to analyze chitosan, Schiff base, optimum inhibitor concentration, and morphological structure. This research consisted of extraction and acylation transformation stages, corrosion rate measurement, and SEM testing. This research resulted in the degree of deacetylation of chitosan from the FT-IR spectra of 53.71%. Chitosan Schiff base from green mussel shells was successfully synthesized as much as 188.41 g. The optimum corrosion rate is found at the inhibitor concentration of 1500 ppm, with the highest efficiency level of 91.84%. The results of SEM testing on treated steel samples yielded fewer corrosion products in the form of uniform corrosion and pitting corrosion than untreated steel samples. This result shows that the chitosan Schiff base inhibitor from the optimum concentration of green mussel shells effectively inhibits the corrosion rate.

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