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All Journal Journal TEPAT: Teknologi Terapan untuk Pengabdian Masyarakat Journal of Biobased Chemicals (JOBC)
Nur An-nisa Putry Mangarengi
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Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Engineering Public Health

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Sosialisasi Pemanfaatan Limbah Botol PET menjadi Ecobrick di SD Inpres Kantisang-Tamalanrea Mary Selintung; Asiyanthi Tabran Lando; Muralia Hustim; Kartika Sari; Rasdiana Zakaria; Nur An-nisa Putry Mangarengi; Abdul Nasser Arifin
JURNAL TEPAT : Teknologi Terapan untuk Pengabdian Masyarakat Vol 4 No 1 (2021): Kesadaran Sosial dalam Memperkuat Kehidupan Masyarakat dalam Era Pandemi
Publisher : Faculty of Engineering UNHAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jurnal_tepat.v4i1.177

Abstract

Plastics are widely used in various kinds of human life needs. The most important problem is plastic waste which cannot be decomposed naturally. It takes a very long time to clean plastic waste from the face of the earth. Moreover, the use of plastic is almost uncontrollable. Ecobrick is a creative effort to manage plastic waste into useful objects, reducing pollution and toxins generated by plastic waste. Its function is not to destroy plastic waste, but to extend the life of these plastics and process them into something useful, which can be used for the benefit of humans in general. Ecobricking is a plastic waste management technique made from used plastic bottles in which various plastic waste has been filled to the brim and then compacted until it becomes hard. After the bottles are full and hard, they can be assembled with glue and assembled into tables, simple chairs, building materials for walls, towers, small stages, and even have the potential to be assembled into fences and foundations for simple playgrounds and even houses. The partners involved in this Community Service activity are students and teachers at SD Inpres Kantisang. The solution offered is the management and processing of PET bottle waste that arises from the school environment into ecobricks which can be reused in the school environment. Due to the COVID-19 pandemic, the socialization carried out is by providing flash media to the school. The flashdisk contains educational and animated videos, as well as instructions for sorting waste and making ecobricks. The school will include this socialization material in Thematic learning in grade 5 and grade 6, and it is also used as a support for the Adiwiyata program at SD Inpres Kantisang - Tamalanrea.
Implementation of Aquatic Environmental Monitoring Technology in Solar-Powered Seaweed Cultivation to Optimize the Productivity of the Masempo Dalle Fishermen Group, Pinrang Regency Intan Sari Areni; Ashadi Amir; Nur An-Nisa Putry Mangarengi
JURNAL TEPAT : Teknologi Terapan untuk Pengabdian Masyarakat Vol 8 No 2 (2025): Collaboration for Accelerated Community Achievement
Publisher : Faculty of Engineering UNHAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jurnal_tepat.v8i2.614

Abstract

Watang Suppa Village, Suppa Sub-district, Pinrang Regency has great potential for seaweed cultivation; however, the Masempo Dalle Fishermen Group still faces several challenges, particularly the limitation in monitoring water environmental conditions in real-time. Conventional methods based on visual observation and empirical experience result in low accuracy in assessing cultivation site suitability, leading to fluctuating yields and economic losses. This Community Service Program aims to enhance seaweed farming productivity through the implementation of an Internet of Things (IoT)-based water quality monitoring system powered by solar energy, while also improving fishermen’s knowledge and skills in technology utilization. The implementation method consisted of socialization, training, two phases of technology trials, and monitoring and evaluation. The results indicated a significant increase in fishermen’s knowledge, such as water quality parameter understanding improving from 42% to 78%, readiness to adopt technology from 40% to 76%, and basic IoT comprehension from 35% to 75%. Technical capabilities also improved, with the ability to read sensor data rising from 38% to 78%, device installation understanding from 32% to 70%, and maintenance skills from 30% to 68%. The technology trials successfully provided more accurate water quality data and enabled fishermen to monitor cultivation sites in real-time. This program is expected to serve as an initial step toward building technological independence in coastal communities and promoting sustainable aquaculture practices.
Ultrasound-Assisted Synthesis of Activated Carbon from Palm and Candlenut Shells for Efficient Nickel Ion Adsorption Andi Asdiana Irma Sari Yusuf; Yuli Amdia Riski; Herlina Rahim; Ibtisamatul Aminah; Nur An-nisa Putry Mangarengi; Sariwahyuni; Idi Amin; Syardah Ugra Al Adawiyah
JOBC Vol. 5 No. 2 (2025): Journal of Biobased Chemicals
Publisher : University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jobc.v5i2.45

Abstract

An excessive concentration of nickel in aquatic systems poses significant risks to the environment and living organisms, particularly when it exceeds established environmental quality standards. Conventional treatment techniques such as chemical precipitation, ion exchange, and membrane filtration are often limited by high operational costs, complex maintenance, and the generation of secondary sludge. Biomass-derived activated carbon has emerged as a sustainable and cost-effective adsorbent with notable adsorption potential. However, studies exploring hybrid biomass sources for activated carbon production remain scarce. This study investigates the feasibility of using ultrasonically activated carbon derived from a 50:50 blend of palm and candlenut shells for the adsorption of Ni²⁺ from aqueous solutions. The biomass underwent carbonization followed by ultrasonic activation at 48 kHz and was subsequently subjected to comprehensive physicochemical characterization and batch adsorption experiments. The optimized hybrid adsorbent exhibited the highest fixed carbon content (84.68%) and iodine number (374.36 mg/g). Adsorption tests revealed a Ni²⁺ removal efficiency of 77.33% within 30 minutes. Fourier Transform Infrared (FTIR) analysis showed the presence of main functional groups (-OH, C=O, C=C) that can bind metal ions. This emphasized the ultrasonic activation potential as an eco-friendly process for producing high-quality activated carbon, contributing to water treatment and aligning with circular economy principles.
Co-Authors Abdul Nasser Arifin ASHADI AMIR Asiyanthi Tabran Lando Herlina Rahim Ibtisamatul Aminah Idi Amin Intan Sari Areni Kartika Sari Mary Selintung Muralia Hustim Rasdiana Zakaria Sariwahyuni Syardah Ugra Al Adawiyah Yuli Amdia Riski