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All Journal Jurnal Chemurgy International Journal of Engineering, Science and Information Technology Jurnal Pengabdian Kepada Masyarakat
Nur, Ahmad Moh
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Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Transportation

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ANALISA PENGARUH PEMBENTUKAN BIOGAS TERHADAP PENCAMPURAN LIMBAH SEKAM PADI PADA KOTORAN SAPI Wahyudin, Muhammad Aditya; Mustofik, Feri; Nur, Ahmad Moh; Huda, Hairul; Kahar, Abdul
Jurnal Chemurgy Vol 8, No 1 (2024): Jurnal Chemurgy-Juni 2024
Publisher : Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/cmg.v8i1.9325

Abstract

Biogas adalah salah satu jenis energi terbarukan yang diproduksi melalui proses anaerobic bahan organik. Penelitian ini bertujuan untuk menganalisa pengaruh pencampuran limbah sekam padi pada kotoran sapi terhadap tekanan dan volume biogas yang terbentuk. Analisa ini dilakukan untuk mengetahui perbedaan pembentukan biogas antara biogas dengan 100% kotoran sapi dan biogas dengan 50% kotoran sapi + 50% limbah sekam padi. Data yang dijadikan parameter pada penelitian ini adalah tekanan gas dan volume gas dengan interval waktu 1 hari yang dilakukan selama 7 hari. Tekanan biogas tertinggi terjadi pada hari ke-5 yaitu pada 100% kotoran sapi didapatkan tekanan 1,25 atm sementara pada 50% kotoran sapi + 50% limbah sekam padi didapatkan tekanan 1,18 atm. Sementara volume biogas tertinggi terjadi pada hari ke-5 yaitu pada 100% kotoran sapi didapatkan volume 0,501 m3 sementara pada 50% kotoran sapi + 50% limbah sekam padi didapatkan volume 0,474 m3. Jadi dapat disimpulkan bahwa proses fermentasi maksimal pembentukan biogas antara 100% kotoran sapi dan biogas dengan 50% kotoran sapi + 50% limbah sekam padi terjadi pada hari kelima karena setelah beberapa hari proses anaerob berlangsung, bakteri metanogen berangsur-angsur semakin aktif sampai tercapai pH optimal untuk produksi biogas serta biogas yang terbentuk juga lebih tinggi pada 100% kotoran sapi hal ini dapat terjadi karena tekstur sekam padi yang kasar dan sulit untuk terurai selain itu kotoran sapi mengalami adaptasi dengan substrat baru yaitu sekam padi, sehingga kenaikan pH membutuhkan waktu yang lebih lama dibandingkan substrat yang hanya mengandung kotoran sapi Kata kunci: biodigester, biogas, kotoran sapi, pengaruh sekam padi
Pembuatan Kompos Menggunakan Komposter Ember Tumpuk di Desa Salo Cella Nur, Ahmad Moh; Syaipurahman, Syaipurahman; Surya Saputra, Muhammad Dwiki; Pratama, Rafly Genta; Firzatullah, Anugrah Dimas; Astami, Mita Wahyu; Zalukhu, Agusfoni; Aulia Putri, Firdhanur; Putri, Arima Widya; Arfyani, Anita Nur; Anriani, Fina
Jurnal Pengabdian Kepada Masyarakat Vol. 1 No. 6 (2025): Jurnal Pengabdian Kepada Masyarakat
Publisher : CV. Era Digital Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59066/jpkm.v1i6.1580

Abstract

Kuliah Kerja Nyata (KKN) Bina Desa of Mulawarman University in Salo Cella Village, Muara Badak District, Kutai Kartanegara Regency, aimed to provide a solution for organic waste management through the use of a stacked bucket composter system. The village does not yet have a Temporary Waste Disposal Site (TPS), resulting in waste often being burned or dumped into the river, causing pollution. The stacked bucket composter method was chosen because it is simple, affordable, easy to apply at the household level, and capable of producing two products: solid compost as a planting medium and liquid organic fertilizer (POC) as plant nutrients. The process involved chopping organic waste, mixing it with rice husk ash, and adding an EM4 and molasses solution to accelerate decomposition. The results indicated enthusiasm from the residents, particularly in RT 01, for applying this technology as an effort to reduce organic waste volume and increase environmental awareness. This program is expected to be replicated through community outreach and empowerment to establish sustainable waste management in Salo Cella Village.
Biosorption of Ni(II) Ions from Aqueous Solution Using Immobilised Cells of Bacillus cereus Khairunnisa, Khairunnisa; Nur, Ahmad Moh; Pisceselia, Dian Febrianti; Fira, Aulia Almag; Aldeani, Putri
International Journal of Engineering, Science and Information Technology Vol 5, No 4 (2025)
Publisher : Malikussaleh University, Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52088/ijesty.v5i4.1773

Abstract

In the present study, immobilised Bacillus cereus cells were used as a biosorbent for the removal of Ni2+ ions from aqueous solution. Bacillus cereus was immobilised with 3% sodium alginate and 2% CaCl2. The adsorption studies of bacteria were investigated in batch mode. Optimum biosorption conditions were determined as a function of pH, biosorbent dose, Ni2+ ion concentration, and contact time. The removal of Ni2+ ions increases with increased dose of biosorbent, while the adsorption capacity decreases with increasing dose of biosorbent. The equilibrium adsorption data were analysed using the Langmuir and the Freundlich isotherm models. The regression coefficient (R2) for the Langmuir isotherm was 0.9822 at a contact time of 60 minutes and pH 6. The maximum monolayer adsorption capacity (qe) of the biosorbent, as obtained from the Langmuir adsorption isotherm, was found to be 57.80 mg/g with the Langmuir adsorption constant ( 0,086 L/mg. RL values range from 0 to 1, as shown, supporting the previous observation that the Langmuir isotherm was favourable for Ni2+ ion adsorption. The adsorption kinetics were analysed using the pseudo-first-order and pseudo-second-order models. Kinetics of Adsorption followed pseudo-second order with a regression coefficient of pseudo-second order of  R2 0.98, the coefficient of rate constant for pseudo-second order () obtained 0.004 g/mg.min, pointing out that the adsorption mechanism is chemosorption or ion exchange. FTIR spectrum of biosorbent revealed the presence of OH, NH, C-H, C=O and COO-. SEM-EDX was used to analyse the surface morphology and texture of the biosorbent.
Co-Authors Abdul Kahar Aldeani, Putri Anriani, Fina Arfyani, Anita Nur Astami, Mita Wahyu Aulia Putri, Firdhanur Fira, Aulia Almag Firzatullah, Anugrah Dimas Hairul Huda Khairunnisa Khairunnisa Mustofik, Feri Pisceselia, Dian Febrianti Pratama, Rafly Genta Putri, Arima Widya Surya Saputra, Muhammad Dwiki Syaipurahman, Syaipurahman Wahyudin, Muhammad Aditya Zalukhu, Agusfoni