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Pengaruh mikroplastik polietilen dan oxo-degradable (Oxium) pada pertumbuhan mikroalga Tetraselmis chuii Adian Khoironi; Khoirul Huda; Imron Hambyah; Inggar Dianratri
Jurnal Ilmu Lingkungan Vol 19, No 2 (2021): Agustus 2021
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.19.2.211-218

Salah satu cara yang digunakan di Indonesia dalam menanggulangi berlimpahnya jumlah sampah plastik di lingkungan perairan adalah dengan menggantikan kantong plastik berbahan polimer polietilen (PE) dengan plastik oxodegradable yang disebut oxium. Penelitian ini dilakukan dengan tujuan untuk melihat pengaruh mikroplastik polietilen jenis HDPE (High Density Polyethylene) dengan plastic oxodegradable oxium. Penelitian dilakukan dengan menggunakan mikroalga Tetraselmis chuii sebagai mikroorganisme yang akan mendapat perlakuan mikroplastik dengan konsentrasi yang berbeda. Dari Hasil pengukuran optical density untuk menentukan laju pertumbuhan mikroalga Tetraselmis Chuii menunjukkan bahwa laju pertumbuhan Tetraselmis dengan perlakuan mikroplastik polietilen mengalami penurunan yang signifikan dibandingkan dengan mikroplastik oxium. Konsentrasi mikroplastik ikut berperan dalam menentukan laju pertumbuhan Tetraselmis chuii di mana pada perlakuan mikroplastik oxium terjadi penurunan hingga 37,66% pada konsentrasi mikroplastik 300mg/500mL dan 81,70% pada perlakuan mikroplastik polietilen dengan konsentrasi 200mg/500mL. Mikroplastik polietilen dan oxium memberikan dampak negatif pada organisme tingkat rendah disebabkan oleh kemampuannya dalam melepas bahan aditif yang bersifat toksik sehingga diperlukan solusi yang lebih baik untuk menggantikan fungsi plastik dengan bahan yang lebih ramah bagi lingkungan hidup. ABSTRACTOne of the methods used in Indonesia in tackling the abundance of plastic waste in the aquatic environment is to replace plastic bags made of polyethylene (PE) polymer with oxodegradable plastic called oxium. This research was conducted with the aim of examining the effect of HDPE (High Density Polyethylene) microplastic polyethylene with oxodegradable oxium plastic. The research was conducted using the microalgae Tetraselmis chuii as microorganisms that will receive microplastic treatment with different concentrations. From the results of optical density measurements to determine the growth rate of Tetraselmis chuii microalgae, it was shown that the growth rate of Tetraselmis with polyethylene microplastics treatment decreased significantly compared to oxium microplastics. The concentration of microplastics played a role in determining the growth rate of Tetraselmis chuii where in the oxium microplastic treatment there was a decrease of up to 37.66% at the microplastic concentration of 300mg/500mL and 81.70% at the polyethylene microplastic treatment with a concentration of 200mg/500mL. Polyethylene and oxyum microplastics have a negative impact on low-level organisms due to their ability to release toxic additives so that better solutions are needed to replace the function of plastics with materials that are more environmentally friendly.

Evaluasi Efektivitas Metode dan Media Filtrasi pada Pengolahan Air Limbah Tahu Anisa Nur Sitasari; Adian Khoironi
Jurnal Ilmu Lingkungan Vol 19, No 3 (2021): November 2021
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.19.3.565-575

Peningkatan jumlah industri tahu di Indonesia diiringi dengan meningkatnya jumlah limbah industri tahu yang perlu mendapat perhatian khusus. Limbah tahu dengan kandungan bahan organik tinggi memberikan dampak negatif bagi sistem perairan jika dibuang tanpa adanya pengolahan. Penelitian ini dilakukan dengan tujuan untuk mempelajari metode yang efektif dalam mengolah limbah tahu dengan variasi media filtrasi. Penelitian ini dilakukan dengan menggunakan 2 metode yang diperlakukan pada 2 kolom filtrasi dengan media filtrasi yang berbeda. Susunan media utama pada kolom filtrasi 1 berupa bioball dan kolom filtrasi 2 berupa bioring. Metode batch dan kontinyu diperlakukan pada dua jenis kolom filtrasi tersebut. Ketinggian total media filtrasi untuk setiap kolom adalah 20 cm dengan volume air limbah 5 liter. Hasil penelitian menunjukkan adanya peningkatan kualitas air limbah tahu pada sampel hari ke 1 dengan terjadinya penurunan konsentrasi COD pada kolom 1 dengan perlakuan metode batch sebanyak 18,12%. Peningkatan konsentrasi DO paling optimal pada kolom 1 dengan perlakuan metode kontinyu sebanyak 18,03%. Selanjutnya konsentrasi pH terjadi peningkatan secara signifikan pada kolom 2 dengan perlakuan metode batch sebanyak 41,27%. Sedangkan penurunan konsentrasi kekeruhan diperoleh pada kolom 1 dengan perlakuan metode batch sebanyak 57,22%. Perlakuan limbah tahu dengan metode batch pada waktu tinggal 1 hari memberikan peningkatan kualitas air limbah tahu yang lebih baik meskipun pada waktu tinggal yang lebih lama terjadi penurunan kualitas akibat terjadinya proses dekomposisi yang tidak terkontrol. Lebih lanjut, perlu dilakukan penelitian dengan melibatkan mikroorganisme selektif pada penyaring lambat dengan metode batch agar dihasilkan penurunan konsentrasi COD yang lebih signifikan. ABSTRACTThe increase in the number of tofu industries in Indonesia is accompanied by an increase in the amount of tofu industrial waste that needs special attention. Tofu waste with high organic matter content has a negative impact on aquatic systems if it is disposed of without treatment. The aim of this research was to study the effective method of treating tofu waste with a variety of filtration media. This research was conducted using 2 methods which were treated on 2 filtration columns with different filtration media. The composition of the main media in first filtration column is bioball and second filtration column is bioring. Batch and continuous methods are applied to the two types of filtration columns. The total height of the filtration media for each column is 20 cm with a volume of 5 liters of wastewater. The results showed an increase in the quality of tofu wastewater on the first day of the sample with a decrease in COD concentration in first column with the batch method treatment of 18.12%. The most optimal increase in DO concentration in first column with continuous method treatment was 18.03%. Furthermore, the pH concentration increased significantly in second column with the batch method treatment as much as 41.27%. While the decrease in turbidity concentration was obtained in column 1 with batch method treatment as much as 57.22%. The treatment of tofu waste using the batch method at a residence time of 1 day provides a better-quality improvement of tofu wastewater although at a longer residence time there is a decrease in quality due to an uncontrolled decomposition process. Furthermore, it is necessary to conduct research involving selective microorganisms in a slow filter with a batch method in order to produce a more significant reduction in COD concentration.

Preliminary Observation of Biogas Production from a Mixture of Cattle Manure and Bagasse Residue in Different Composition Variations H Hadiyanto; Figa Muhammad Octafalahanda; Jihan Nabila; Andono Kusuma Jati; Marcelinus Christwardana; Kusmiyati Kusmiyati; Adian Khoironi
International Journal of Renewable Energy Development Vol 12, No 2 (2023): March 2023
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2023.52446

The need of renewable energy is paramount important as it is expected to replace fossil energy. One of renewable energy commonly used for rural area is biomass-based energy. Biogas is a biomass-based energy where organic materials are converted to methane gas via anaerobic digestion process. The limitations of mono-feedstock biogas are instability digestion process, low yield biogas produced and require readjusting C/N ratio, therefore co-digestion process was proposed to overcome these problems. This study aims to investigate the feasibility of anaerobic co-digestion of a mixture of cattle manure and bagasse residue in different weight ratio combinations. Biogas was generated by anaerobic digestion using a mixed substrate composed of a combination of weight ratios of bagasse:cattle manure (1:5, 1:2, 1:1, and 3:1). The kinetic analysis was evaluated by fitting Gompertz and Logistic model to experimental data of cumulative biogas. The result showed that the combination of 1:5 ratio of bagasse waste to cattle manure obtained the best biogas yield with cumulative biogas at 31,000 mL. The kinetic model of Gompertz and Logistic were able to predict the maximum cumulative biogas at ratio of 1:5 (cattle: bagasse) at 31,157.66 mL and 30,112.12 mL, respectively. The other predictions of kinetic parameters were maximum biogas production rate (Rm)= 1,720.45 mL/day and 1,652.31 mL/day for Gompertz and Logistic model, respectively. Lag periods were obtained at 2.403 day and 2.612 day for Gompertz and Logistic model, respectively. The potential power generation of 338.71 Watt has been estimated from biogas. This research has proven a positive feasibility of co-digestion of two feed-stocks (cattle manure and bagasse) for biogas production.

The Influence of Outpatients Medical Information Completeness in The Emergency Departments and Policlinics on Returning BPJS Health Claim Status Faik Agiwahyuanto; Maulana Tomy Abiyasa; Adian Khoironi; Ester Widhiatmi Sutiningary
MEDIA ILMU KESEHATAN Vol 11 No 2 (2022): Media Ilmu Kesehatan
Publisher : Universitas Jenderal Achmad Yani Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30989/mik.v11i2.709

Background: Returning BPJS Health claim status required some outpatients data, therefor this study conducted to understand the medical information needed for the BPJS Health claim.Objective: The objective of this paper was returning BPJS Health claim status required some outpatients data, therefor this study conducted to understand the medical information needed for the BPJS Health claim.Methods: Retrospective analysis with quantitative approach. Variables were groups of cases in the form of confirmation from BPJS Health related to reviews on pending claim files, differentiated according to the type of case. As far as observations could be grouped into 8 confirmation groups as the theme of the cases taken 396 samples of pending claim files at XXX Hospitals Semarang Central Java Indonesia. Data collection was obtained from observations. Data analysis used quantitative analysis.Results: 16.9% were confirmation related to Z code as diagnosis, 11.1% were confirmation of secondary codes, 17.2% were confirmation of potential outpatient and inpatient care, 7.6% were system confirmation, 11.6% were confirmation related to medical support, 11.1% were confirmation regarding number of visits, 5.3% were confirmation related to medical actions, and 19.2% were other confirmations, which contains about authentication, administrative documents, patient identity.Conclusion: Completeness of medical information on outpatients from emergency departments and polyclinic of BPJS Health patients were confirmation related to Z code as diagnosis, confirmation of secondary codes, confirmation of potential outpatient and inpatient care, system confirmation, confirmation related to medical support, confirmation regarding number of visits, confirmation related to medical actions, and other confirmations.

The Effectiviness of Constructed Wetland Methode in Greywater Treatment Using Purun Danau (Lepironia ar- ticulata) Dwi Puspa Oktaningtyas; Adian Khoironi
Journal of Bioresources and Environmental Sciences Accepted Issue
Publisher : BIORE Scientia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jbes.2024.19920

The use of clean water around the world continues to increase along with the increase in population and is increasing when the whole world is hit by the COVID-19 pandemic. Therefore, research is carried out to treat greywater waste effectively in a simple and inexpensive way. The method used in this study is a single method, namely filtration (a mixture of soil and sand, activated char- coal and gravel), Lepironia articulata and a combination of the two methods, namely constructed wetland subsurface vertical flow. The results of this study showed a decrease in BOD and COD levels reaching 97%, 88% phosphate, 18% pH and 95% MBAS in the constructed wetland. This is due to the synergistic in- teraction between plants, media and microorganisms in removing pollutants ef- fectively. This research needs to be developed further and explore the capabilities of each constructed wetland element, especially the Lepironia articulata

Preliminary Observation of Biogas Production from a Mixture of Cattle Manure and Bagasse Residue in Different Composition Variations H Hadiyanto; Figa Muhammad Octafalahanda; Jihan Nabila; Andono Kusuma Jati; Marcelinus Christwardana; Kusmiyati Kusmiyati; Adian Khoironi
International Journal of Renewable Energy Development Vol 12, No 2 (2023): March 2023
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2023.52446

The need of renewable energy is paramount important as it is expected to replace fossil energy. One of renewable energy commonly used for rural area is biomass-based energy. Biogas is a biomass-based energy where organic materials are converted to methane gas via anaerobic digestion process. The limitations of mono-feedstock biogas are instability digestion process, low yield biogas produced and require readjusting C/N ratio, therefore co-digestion process was proposed to overcome these problems. This study aims to investigate the feasibility of anaerobic co-digestion of a mixture of cattle manure and bagasse residue in different weight ratio combinations. Biogas was generated by anaerobic digestion using a mixed substrate composed of a combination of weight ratios of bagasse:cattle manure (1:5, 1:2, 1:1, and 3:1). The kinetic analysis was evaluated by fitting Gompertz and Logistic model to experimental data of cumulative biogas. The result showed that the combination of 1:5 ratio of bagasse waste to cattle manure obtained the best biogas yield with cumulative biogas at 31,000 mL. The kinetic model of Gompertz and Logistic were able to predict the maximum cumulative biogas at ratio of 1:5 (cattle: bagasse) at 31,157.66 mL and 30,112.12 mL, respectively. The other predictions of kinetic parameters were maximum biogas production rate (Rm)= 1,720.45 mL/day and 1,652.31 mL/day for Gompertz and Logistic model, respectively. Lag periods were obtained at 2.403 day and 2.612 day for Gompertz and Logistic model, respectively. The potential power generation of 338.71 Watt has been estimated from biogas. This research has proven a positive feasibility of co-digestion of two feed-stocks (cattle manure and bagasse) for biogas production.

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