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All Journal Program Kreativitas Mahasiswa - Penelitian Jurnal Riset Kimia Jurnal Litbang Industri Indonesian Journal of Chemistry Proceedings of the 1st UR International Conference on Educational Sciences Jurnal Hilirisasi IPTEKS (JHI) Warta Pengabdian Andalas: Jurnal Ilmiah Pengembangan Dan Penerapan Ipteks Jurnal Litbang Industri Jurnal Katalisator
Deswati Deswati
Department Of Chemistry, Faculty Of Mathematics And Natural Sciences, Andalas University, Kampus Unand Limau Manis Padang
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Dentistry Education Engineering Health Professions Industrial & Manufacturing Engineering Medicine & Pharmacology Public Health Social Sciences Veterinary Other

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DISEMINASI TEKNOLOGI PAKAN BUATAN ALTERNATIF UNTUK PENGEMBANGAN BUDIDAYA IKAN GURAME INTENSIF DALAM UPAYA MENINGKATKAN PRODUKTIVITAS PERIKANAN DI KELURAHAN LIMAU MANIS KECAMATAN PAUH KOTA PADANG Efrizal Efrizal; Nurmiati Nurmiati; Chairul Chairul; Anthoni Agustien; Suwirmen Suwirmen; Rusnam Rusnam; Deswati Deswati
Jurnal Hilirisasi IPTEKS Vol 3 No 1 (2020)
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (739.612 KB) | DOI: 10.25077/jhi.v3i1.347

Abstract

Lecturer and community based science and technology activities (IbDM) were carried out with the aim of disseminating technology for Gurame culture intensively in an effort to increase fisheries productivity in Limau Manis, Pauh Subdistrict, Padang City and increase the knowledge and skills of fish farmers (community) in Koto Tangah Village in the field of Gurame fish maintenance business in West Sumatra, so that they are expected to be able to carry out maintenance in a good / environmentally friendly manner. Besides this IbDM activities are also expected to be able to reduce operational costs in maintaining Nirwana Tilapia and in the end can increase the income of the farmers (community) of Limau Manis Village through the development of sustainable fish farming. To achieve optimal technology dissemination results, the main target of IbDM in Pauh Subdistrict is fish farmer groups and community leaders / leaders of Limau Manis Village who are expected to be able to motivate farmers to socialize the method of making alternative formula feeds for intensive development of Nirwana Tilapia aquaculture and environmentally friendly. The methods used in this activity are (1) counseling, with the main material: (a) providing knowledge of various kinds of raw materials that can be used for fish food, (b) providing knowledge about the preparation of artificial food formulas / compositions, ( c) provide knowledge about the process of making artificial food (d) increase public knowledge about how to store pellets that are good to be more durable and (e) provision of material on testing the quality of feed, both physically, chemically and biologically; and (2) Intensive demonstration of making alternative pellet feeds for Nirwana Tilapia aquaculture. From the results of the IbDM activity, it was found that the knowledge and skills of farmer groups in Limau Manis Sub-district, Kec. Pauh, Padang before the IbDM activities were carried out was still very low. However, the motivation or desire of the community of IbDM partner farmer groups to carry out the culture or maintenance of fish is very large. This can be seen from the desire of the IbDM partner farmer group to master the technology of making fish feed from the results of leaf waste and taro stems which are processed into flour relatively high. Furthermore, the results of IbDM activities in the community can increase the knowledge and skills of the community in finding alternative feed for fish feed so that culture activities can run well in IbDM partner areas. In order for aquaculture to run well in partner areas of IbDM, it is necessary to carry out IbDM activities continuously on the techniques of making alternative fish pellets and efficient and effective fish-raising techniques. Besides that, it needs financial support or credit by the authorities to the community or fish farmers for capital to develop their businesses.
DISEMINASI TEKNOLOGI FORMULATED DIET ALTERNATIF DALAM UPAYA MENINGKATKAN PRODUKTIVITAS BUDIDAYA IKAN NILA INTENSIF DI KOTA PADANG Efrizal Efrizal; Nurmiati Nurmiati; Chairul Chairul; Anthoni Agustien; Zuhri Syam; Suwirmen Suwirmen; Rusnam Rusnam; Deswati Deswati
Jurnal Hilirisasi IPTEKS Vol 4 No 4 (2021)
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jhi.v4i4.534

Abstract

Fish cultivators generally experience difficulties providing quality artificial feed (pellets) due to a lack of knowledge and skills in processing technology and making alternative feeds. Besides that, the costs incurred for feed procurement are relatively large, reaching 70 - 80% of the total production costs. However, the provision of feed is often an obstacle because, in addition to the increasingly high price, the quality of available feed does not always match the nutritional needs needed by Fish. The provision of quality feed for intensively cultivated tilapia dramatically affects the resulting growth and productivity. The higher the quality of the feed, the production will also increase. One of the technologies that can be applied to overcome this problem is the manufacture of alternative formulated diets using local raw materials. The method used in this service activity is the transfer of knowledge presented in the socialization activities in the form of 1) introduction to the types of alternative fish feed ingredients sourced from the area, (2) preparation of artificial tilapia feed formulations, (3) manufacturing technology artificial feed (pellets) and 4) monitoring and assistance. The socialization was carried out in the form of a lecture and was followed by a question and answer session. The results of farmer activities recognize the types of local feed that can be used as fish feed, know the preparation of feed formulations, and alternative artificial feed manufacturing technologies. The knowledge and skills possessed by fish cultivators are expected to overcome the difficulties of fish farmers in providing feed so that fish production and cultivation business increase.
Pemberdayaan Perempuan Melalui Teknologi Roll Work 3-D Berbasis Limbah Kertas Di Nagari Lareh Nan Panjang Sungai Sariak Olly Norita Tetra; Bustanul Arifin; Deswati Deswati
Warta Pengabdian Andalas Vol 28 No 3 (2021)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jwa.28.3.173-181.2021

Abstract

3-Dimensional Roll Work technology training by processing waste paper into high-value handicraft products has been carried out in Nagari Lareh Nan Panjang, Padang Pariaman Regency. Most of the productive age groups in this area were unemployed women who depend on their husband's income for a living. In other hand, the activities of women's farmer groups, youth groups and (Family Welfare Movement) PKK were not productive. This activity aims to foster and empower community groups, especially women, in managing and processing paper waste into high selling value products with 3-Dimensional Roll Work technology that can be used as business opportunities so as to increase household income. The activity began with counseling on the dangers of paper waste for health and the environment, and continued by 3-dimensional Roll Work training. The indicator of the achievement of the targeted community service program was the management and processing of paper waste where each participant can produce quality handicraft products, namely key chains and accessories, while for other handicraft products, it was continued for group activities such as tissue, accessories, and cake boxes. This activity can be used as a sustainable empowerment effort through increasing community participation, self-financing and community self-help so as to create economically independent women in Nagari Lareh Nan Panjang.
SIMULTANEOUS DETERMINATION OF CADMIUM, COPPER AND LEAD IN SEA WATER BY ADSORPTIVE STRIPPING VOLTAMMETRY IN THE PRESENCE OF CALCON AS A COMPLEXING AGENT Deswati Deswati; Hamzar Suyani; Safni Safni; Umiati Loekman; Hilfi Pardi
Indonesian Journal of Chemistry Vol 13, No 3 (2013)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (330.532 KB) | DOI: 10.22146/ijc.21282

Abstract

A selective and sensitive adsorptive stripping voltammetric (AdSV) procedure for the simultaneous determination of cadmium, copper and lead in the sea water was conducted. The aim of this research is to get optimum condition for simultaneous determination of cadmium, copper and lead. Adsorptive stripping voltammetry has been used for determination of trace amount of Cd(II), Cu(II) and Pb (II) by using calcon as a complexing agent. The parameters studied were variation of calcon concentration, pH, accumulation potential and accumulation time. In this study, the optimum conditions were calcon concentration of 0.6 mM, pH = 4.0, accumulation potential of -0.7 V and accumulation time of 80 sec. At the optimum conditions, the relative standard deviation were 8.78%, 3.12%, and 4.02% for Cd(II), Cu(II) and Pb(II) respectively for eight replicates (n = 8) measurements of 10 μg/L mixed standard solution of Cd(II), Cu(II) and Pb(II). The method was applied to the direct simultaneous determination of Cd(II), Cu(II) and Pb(II) in sea water around Bungus, Padang City. Concentration of Cd(II), Cu(II) and Pb(II) in samples were equal to 1.8 μg/L for Cd(II), 38.6 μg/L for Cu(II) and 0.7 μg/L for Pb(II) with recovery of 87.03%, 98.80%, and 95.73%, respectively.
THE METHOD DEVELOPMENT OF ANALYSIS Cd, Cu, Pb AND Zn IN SEA WATER BY ABSORPTIVE STRIPPING VOLTAMMETRY (ASV) IN THE PRESENCE OF CALCON AS COMPLEXING AGENT Deswati Deswati; Hamzar Suyani; Safni Safni
Indonesian Journal of Chemistry Vol 12, No 1 (2012)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (356.639 KB) | DOI: 10.22146/ijc.21367

Abstract

A sensitive and selective absorptive stripping voltammetric (AdSV) method to determine Cd(II), Cu(II), Pb(II) and Zn(II) in sea water is proposed. The aim of this study was to get optimum condition for the determination of Cd(II), Cu(II), Pb(II) and Zn(II). Absorptive stripping voltammetry has been used for ultra trace determination of Cd(II), Cu(II), Pb(II) and Zn(II) using calcon as a complexing agent (ligand). In this case, the optimum conditions were reached at 0.1 M KCl supporting electrolyte, concentration of 0.5 mM calcon for Cd(II), Cu(II) 0.3 mM while 0.7 mM for Pb(II) and Zn(II), pH 6 for Cu(II) and pH 7 for Cd(II), Pb(II) and Zn(II), accumulation potential -0.5 V for Cu(II) and Pb(II) and -0.6 V for Cd(II) and Zn(II) and accumulation time 70 sec for Cd(II), 90 sec for Cu(II) and Pb (II) while 50 s for Zn(II). At the optimum condition the relative standard deviations were 7.80%, 4.25%, 8.70% and 0.86% for Cd(II), Cu(II), Pb(II) and Zn(II) respectively for eight replicates (n = 8) measurements of 10 μg/L Cd(II), Cu(II), Pb(II) and Zn(II). The method was applied for the direct determination of Cd(II), Cu(II), Pb(II) and Zn(II) in sea water around Bungus, Padang City. Concentration Cd(II), Cu(II), Pb(II) and Zn(II) in sample were 13.200 μg /L for Cd(II), 17.200 μg/L for Cu(II), 0.089 μg/L for Pb(II) and 62.000 μg/L for Zn(II) with recovery of 98.68%, 97.99%, 96.17% and 99.96% for Cd(II), Cu(II), Pb(II) and Zn(II), respectively.
Perlakuan ozon dan sonokimia untuk degradasi residu mankozeb pada cabe hijau (Capsicum annuum L.) Safni Safni; Elma Fadrita Rahman; Deswati Deswati; Salmariza Sy
Jurnal Litbang Industri Vol 11, No 2 (2021)
Publisher : Institution for Industrial Research and Standardization of Industry - Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (391.584 KB) | DOI: 10.24960/jli.v11i2.7259.103-109

Abstract

Fungisida, seperti mankozeb, banyak digunakan dalam bidang pertanian berkelanjutan dan akan meninggalkan residu pada bahan pangan. Proses oksidasi lanjutan (AOPs) ozon treatment (ozonolisis dan air ozon), sonokimia (sonolisis) serta kombinasi keduanya (sonozolisis) merupakan salah satu teknik potensial dalam mendegradasi residu mankozeb pada cabe hijau. Perbandingan metode degradasi dilakukan pada kondisi yang sama yakni 50 g cabe hijau, 100 mL air dengan waktu treatment 10 menit mampu mendegradasi residu mankozeb sebesar 69,63±1,60 air ozon; 58,83±2,57 sonozolisis; 56,51±2,29 ozonolisis; dan 23,70±1,60 sonolisis. Penambahan waktu perendaman selama 20 menit air ozon meningkatkan persentase degradasi sebesar 83,80±2,54. Beberapa parameter yang mempengaruhi proses degradasi dipelajari seperti waktu treatment, volume air, dan massa cabe hijau. Proses degradasi dengan waktu treatment 10-15 menit, volume air 100 mL dan 50 g cabe hijau mampu mereduksi residu mankozeb sebesar 25-58%. Data hasil analisis spektrofotometer-HPLC menunjukkan bahwa residu mankozeb pada cabe hijau telah berhasil didegradasi.
ISOTHERM, KINETICS, AND THERMODYNAMIC STUDIES FOR ADSORPTION METHYLENE BLUE SOLUTION USING SHRIMP SHELL Suci Wulandari; Hamdhan Fathony; Putri Ramadhani; Deswati; Rahmiana Zein
JURNAL KATALISATOR Vol. 8 No. 1 (2023): Jurnal Katalisator Volume 8 No. 1, April 2023
Publisher : LLDIKTI X Sumbar, Riau, Jambi, Kepri

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (273.866 KB) | DOI: 10.22216/katalisator.v8i1.2091

Abstract

This research was carried out adsorption of methylene blue dye using shrimp shell (SS) biosorbent. Methylene blue dye is commonly used in the textile and paper industries. Previously, research had been carried out on the adsorption of anionic dyes by shrimp shells, then in this study a batch adsorption was carried out to absorb methylene blue cationic dyes.It is carried out in batches with several parameters to obtain the optimum conditions. Several studies were carried out such as isotherm studies, kinetics and thermodynamics to analyze how the adsorption process occurs. The adsorption process followed the Langmuir isotherm model for the two biosorbents which showed the formation of monolayers, the kinetic model followed the second-order pseudo. The thermodynamic study of shrimp shells showed that the adsorption process was non-spontaneous, endothermic, and increased randomness. FTIR analysis shows that there are electrostatic interactions, cation exchange, and hydrogen bonding. SEM-EDX analysis shows that the pore filling of the biosorbent surface by methylene blue molecules occurs.
THERMODYNAMIC STUDY OF METHYLENE BLUE DYE ADSORPTION USING KAPOK HUSK Hamdhan Fathony; Suci Wulandari; Putri Ramadhani; Rahmiana Zein; Deswati
JURNAL KATALISATOR Vol. 8 No. 1 (2023): Jurnal Katalisator Volume 8 No. 1, April 2023
Publisher : LLDIKTI X Sumbar, Riau, Jambi, Kepri

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (261.349 KB) | DOI: 10.22216/katalisator.v8i1.2092

Abstract

This research discusses the thermodynamics of methylene blue(MB) adsorption using kapok husk (KH) and kapok huskmodified with citric acid (CA-KH). Both biosorbents obtained thermodynamic results with a negative value of the change in Gibbs energy (∆G), indicating that the adsorption process took place spontaneously, a negative value on enthalpy (∆H), indicating the adsorption process was an exothermic process, and a negative entropy value (∆S) indicating an increase The regular distribution of methylene blue dye on the surface during the adsorption process is proven by the results of SEM photo analysis at 3000x magnification with the distribution of methylene blue dye on the surface of the two biosorbents..
PENGELOLAAN SAMPAH PLASTIK MENJADI ECOBRICK UNTUK MENEKAN LAJU PENCEMARAN MIKROPLASTIK DI KELURAHAN KAMPUANG JUA KECAMATAN LUBUK BEGALUNG KOTA PADANG Deswati Deswati; Buty Kurnia Hamzani; Olly Norita Tetra
Jurnal Hilirisasi IPTEKS Vol 6 No 3 (2023)
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jhi.v6i3.661

Abstract

As people's consumption levels increase, the plastic waste produced increases, so that plastic waste becomes the first environmental problem in Indonesia, especially in Kelurahan Kampung Jua Nan XX, Kecamatan Lubuk Begalung, Padang City. Plastic waste takes a long time to disintegrate and can decompose into microplastics which can be spread into soil and water. The presence of microplastics in soil and water can contaminate plants, shellfish, fish and even salt which ultimately accumulates in the human body through the food chain cycle. Therefore, a solution is needed so that the presence of plastic waste can be handled properly and carried out optimal management. One solution to utilizing plastic waste is by making ecobrick products that are useful and have high selling value and can be a livelihood opportunity. The aim of this activity is to increase public awareness and concern for the environment in order to create a clean and healthy environment through the management and processing of plastic waste. This activity was carried out in kelurahan Kampung Jua on 27 October and 9 December 2022, with the participants in this activity being PKK women from Kampung Jua Nan XX Village. The methods used were education regarding the threat of plastic and microplastic waste and training through demonstrations on making chairs from ecobricks. The results of this activity can increase public awareness of the dangers of plastic waste, limit the use of plastic bags and manage plastic waste at the source as an effort to reduce plastic waste generation and empower the community to maximizing the economic value of existing waste in a sustainable manner.
PENERAPAN TEKNOLOGI PAPER QUILLING DENGAN MEMANFAATKAN SAMPAH KERTAS UNTUK MENINGKATKAN KETRAMPILAN PETUGAS KEBERSIHAN DI UNIVERSITAS ANDALAS Olly Norita Tetra; Bustanul Arifin; Deswati Deswati
Jurnal Hilirisasi IPTEKS Vol 6 No 2 (2023)
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jhi.v6i2.668

Abstract

Paper waste is the most common waste generated from academic activities on the Andalas University campus. So far, paper waste is allowed to accumulate and then sold by cleaners to waste collectors or burned. This activity aims to increase women's resources and potential through Qulling Paper technology with promising business opportunities, especially for cleaning workers. This activity was carried out from July to September 2022, with the target participants being cleaners with direct contact with paper waste. The method used is counseling about the dangers of paper waste to the environment and health, which ends with discussions and interviews to determine the level of knowledge of cleaning workers about the management and processing of paper waste. The activity continued with paper waste processing training through paper quilling technology by practicing directly until the participants could produce a craft product. Mentoring activities for participants are also carried out by guiding them until they are skilled at producing craft products worth selling. In this training activity, all activity participants can produce handicraft products that have high selling value and are economical. Paper waste processing training for cleaners is one of the most appropriate solutions for reducing the amount of paper waste on the Andalas University campus and, at the same time, improving skills. It is hoped that this activity can increase knowledge and skills and reduce the amount of paper waste in the Andalas University campus environment.
Co-Authors A.A. Ketut Agung Cahyawan W Agustiva Agustiva Anthoni Agustien Arnentis Arnentis, Arnentis Bustanul Arifin BUSTANUL ARIFIN Buty Kurnia Hamzani Chairul Chairul Citra Buhatika Efrizal Efrizal Efrizal Efrizal Elma Fadrita Rahman Evi Suryawati Hamdhan Fathony Hamzar Suyani Hilfi Pardi Imelda - Kiki Fatmala, Kiki Mariani Natalina Murdiman, Imelda Nadia Nadia Nilam Sari Nurmiati Nurmiati Nurmiati Nurmiati Olly Norita Tetra Olly Norita Tetra Putri Ramadhani Raesa Pratiwi Putri Rahmiana Zein Rusnam Rusnam Safni Safni Salmariza Sy Suci Wulandari Suryani, Hamzar Suwirmen, Suwirmen Umiati Loekman Umiati Loekman Umiati Loekman Vanella Indah Pratiwi Yulia - Yunita Salamah Zakaria, Indra Junadi Zuhri Syam Zuhri Syam