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All Journal Eksergi: Chemical Engineering Journal Seminar Nasional Teknik Kimia Kejuangan Konversi Jurnal Chemurgy Jurnal Purifikasi Jurnal Infrastruktur Community Empowerment Jurnal Teknologi Lingkungan UNMUL
Abdul Kahar
Program Studi Teknik Kimia Universitas Mulawarman
Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Public Health Social Sciences Transportation Other

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Journal : Konversi

 1 
EFFECTS OF TEMPERATURE-pH ON LIQUID PHASE MASS TRANSFER AND DIFFUSION COEFFICIENTS AT LEACHATE TREATMENT IN ANAEROBIC BIOREACTOR Abdul Kahar; IDAA Warmadewanthi; Joni Hermana
Konversi Vol 7, No 2 (2018): Oktober 2018
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v7i2.6501

Abstract

Abstract - Leachate contains complex dissolved organic and inorganic substrates that are biodegradable and non-biodegradable. Principally, anaerobic treatment utilizes anaerobic bacteria to degrade the dissolved organic matters. Anaerobic treatment is very sensitive towards the change of temperature and pH. This research used an anaerobic bioreactor with volume of 160L, with a ratio of leachate:biogas was 70:30. Seeding, acclimatization and leachate treatment were executed at temperature 35°C; pH ambient, temperature 45°C; pH ambient, temperature 35°C; pH 7.2 and temperature 45°C; pH 8.0. Based on this research, that there is dependency on mass of solutes organic substrate (COD) in the leachate, at all operating conditions of leachate treatment in anaerobic bioreactor. Hence, the organic substrate concentration (COD) will affect the VFA, the liquid phase mass transfer and diffusion of solute organic. Consequently, the higher the temperature-pH, the higher the liquid-phase mass transfer, but lower diffusion coefficients is. Keywords: anaerobic bioreactor, diffusion, leachate, liquid-phase mass transfer 
BIOCONVERSION OF MUNICIPAL ORGANIC WASTE USING BLACK SOLDIER FLY LARVAE INTO COMPOST AND LIQUID ORGANIC FERTILIZER Abdul Kahar; Muhammad Busyairi; Sariyadi Sariyadi; Agus Hermanto; Ari Ristanti
Konversi Vol 9, No 2 (2020): Oktober 2020
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v9i2.9176

Abstract

Bioconversion of municipal organic waste using Black Soldier Fly larvae provides potential benefits. Apart from reducing municipal solid waste, BSF larvae (maggot) offer valuable added value as animal feed. The purpose of this study was to analyze the potential of BSF larvae in the bioconversion process of municipal organic waste, to analyze the quality of the compost produced and to analyze the nutrition content of BSF larvae (maggot). BSF eggs in hatching are covered with gauze which are given organic waste feed, then after hatching they become BSF larvae transferred to enlargement media. BSF larvae are fed leftovers that enter the TPST, so that the enlargement medium is wet. Feeding leftovers from TPST is done every day. The rearing time for BSF larvae is for one life cycle. Maggot harvesting is carried out at the age of the larva about 2-3 weeks. The final products of organic waste bioconversion are BSF larvae (maggot), compost and POC. It was found that the BSF larvae (maggot) could reduce organic waste (municipal organic waste) by 47.75%. Where the ability of BSF larvae (maggot) to consume municipal organic waste is 26,1508 g waste / g maggot. The protein, crude fat and ash content in maggots which were given organic waste were 41.8%, 14.63% 9.12%, respectively.
MASS BALANCE APPROACH AT PALM CARBON CYCLE Abdul Kahar
Konversi Vol 11, No 2 (2022): OKTOBER 2022
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v11i2.13340

Abstract

Development of Indonesian palm oil industry, not only contributes positively to economic sector. Biggest challenge lies in the negative issues of oil palm development, namely environmental issues. Land use change, forest clearing, deforestation, peat land for palm plantation expansion are environmental issues because they are considered to disturb the balance of greenhouse gases. The use of non-standard fertilizers and POME processing can also increase CO2 emissions, which in turn will reduce carbon storage in vegetation and soil. Soil is the most potent organic carbon sink compared to plants. Soil is an organic carbon pool (reservoir) that accumulates organic carbon in and organic carbon out. The accumulated carbon is influenced by aboveground biomass, belowground biomass, necromass, litter and soil organic matter. So that the development of oil palm is accused of being one of the factors that play a role in soil organic carbon (SOC), soil carbon loss (SCL), net carbon balance (NCB), or greenhouse gasses (GHG) emissions. Where this is a very important component in the palm carbon cycle that has an impact on the global climate. The mass balance approach to the palm carbon cycle obeys the law of conservation of mass. The mass of palm carbon before and after processing is constant. This means that the total mass of palm carbon during the process does not change, only a phase change occurs, namely solid, liquid, and gas.
Co-Authors Agus Hermanto Akhmad Rafii Andita Hayuning Kurnia Ari Ristanti Asih Soenarih Asih Soenarih Aulia Miftahul Jannah Azis Rahmat Pratama Budi Nining Widarti Dedy Nugroho Dharma Saputra Dharma Saputra Dian Nurcahya Dita Aprilia Dita Aprilia Eldifa Auliaputri Kustiawan Elvania Br. Pandia Fahrizal Adnan Frandes Atwa Zwagery Herawati Herawati Hernawati Hernawati I.D.A.A Warmadewanthi Ira Aisya Joni Hermana M. Andrie Fahreza Rakhman Mada Marhaenesia Marista Sihombing Megahapsari Martaningtyas Meicahayanti, Ika Muhammad Adam Rizky Syawalian Muhammad Busyairi Muhammad Busyairi, Muhammad Muthia Andriani Muthia Andriani Ryaas Ma'arif Sariyadi Sariyadi Theresia Jari Vivi Apriliyani Vivi Apriliyani Waya Wulan Sari Yohana Yohana Yulius Sitama Lewar Yunianto Setiawan, Yunianto Yusuf Zihni