Claim Missing Document
Check
Articles

Found 8 Documents
Search

Anaerobic Digestion of Slaughterhouse Wastewater: CO2 Capture of Biogas Using Chlorella vulgaris Nur Indradewi Oktavitri; Wahyu Budi Pratiwi; Indah Purnamasari; Mufrihatul Hayati; Mega Rosita Fitrianingtyas; Semma Hadinnata
Indonesian Journal of Chemistry Vol 19, No 1 (2019)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (254.347 KB) | DOI: 10.22146/ijc.25129

Abstract

Biogas quality from anaerobic digester influenced the combustion of biogas. A high percentage of CO2 in biogas indicates the low quality of biogas. Abatement of CO2 using microalgae, such as Chlorella vulgaris could enhance the quality of biogas. The aim of this research was to observe the ability of C. vulgaris on CO2 removal from slaughterhouse wastewater biogas. In this research, two anaerobic digesters were provided with the different condition of biogas collector bag. The first digester was combined with only biogas collector bag, while another digester was combined with C. Vulgaris. Slaughterhouse wastewater volume in each digester was 3.5 L. Observation time was 15 days and the samples were collected for every 5 days. The result showed that anaerobic digester was able to remove 63% of COD. Biogas composition of slaughterhouse wastewater after incubation for 15 days was 52.70% of air, 46.85% of CH4and 0.45% of CO2. C. Vulgaris enhanced CO2 removal from biogas up to 7%. The density of C. vulgaris decreased to 51 cell/mL. The biogas composition was probably influenced by the density of C. vulgaris.
Ammonia Removal Using Coconut Shell Based Adsorbent: Effect of Carbonization Duration and Contact Time Oktavitri, Nur Indradewi; Purnobasuki, Hery; Kuncoro, Eko Prasetyo; Purnamasari, Indah
IPTEK Journal of Proceedings Series No 4 (2017): 2nd International Seminar on Chemistry 2016
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (166.226 KB) | DOI: 10.12962/j23546026.y2017i4.3072

Abstract

The preparation of adsorbent using activated coconut shell was investigated at carbonization duration and adsorption contact time.  The coconut shell was activated using physical and chemical activation.  This research focused on variation of physical activation such as carbonization. The carbonization had two steps, there are high temperature and medium temperature. This research used 500oC at high temperature and 220oC at medium temperature. The duration of medium temperature was varied in 1, 2, and 4 hours. The chemical activation used H3PO4. The ammonia concentration of simulated wastewater around 6000 mg/l. The acclimatization period was 8 d. The coconut shell ability for ammonia removal was observed after acclimatization period in 0, 2, 4, 6, and 8d.  The effect of carbonization period and contact time on ammonia adsorption of dairy simulated wastewater was discussed in this research. This research used anaerobic digestion with 10 liter of volume. The concentration of ammonia was measured with nessler methods. Carbonization duration and contact time increased the adsorption capacity. From the obtained result of adsorption isotherm, the Langmuir equation was the best fit for all carbonization period, especially 4-hour carbonization period.
The Alternative Use Of Water Hyacinth and Reed As Attached Growth Of Microbial In Waste Water Treatment Hery Purnobasuki; Nur Indradewi Oktavitri; Tri Nurhariyati; B. Saadah; Santini Ika Rafsanjani
IPTEK Journal of Proceedings Series Vol 1, No 1 (2014): International Seminar on Applied Technology, Science, and Arts (APTECS) 2013
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2014i1.227

Abstract

Aquatic plants have ability to decrease of waste water contaminant. The Water Hyacinth (Eichornia crassipes) and Reed (Imperata cylindrical) are aquatic plants which have ability to reduce concentration of BOD, TSS, COD, Total Nitrate and Total Phosphate in wetland. The other side, it can be used for media support in anaerobic treatment. Because of their abilities, there is some possibilities that Water Hyacinth and Reed can be used as attached growth of microorganisms. The aims of this study was to investigate the potential of water hyacinth and reed as attached media of microbe growth. Part of the plants are used is the trunk part. A slices of trunk is 1 cm. The analysis were conducted for 14 days with ratio 60% waste water and 40% air of reactor. Results of this study for water hyacinth that TSS decrease up to 71%. COD and Total Phosphate decrease 60%, Total Nitrate decrease 85%. While, for reed, TSS decrease up to 41%. COD decrease 56%, Total Phosphate decrease 41%. Total Nitrate decrease 10%. In conclusion, both of them had a potential as attached media of microbe growth. But, Water Hyacinth was better as media support than reed.
EFFECT HYDRAULIC AGITATION USING ANAEROBIC BIOFILTER FOR TREATED DOMESTIC WASTEWATER Nur Indradewi Oktavitri; Agoes Soegianto; Trisnadi Widyaleksono C. Putranto; Angsukma P. Dewayanti; Adam L.H. Suryawan
JURNAL PENELITIAN BIOLOGI BERKALA PENELITIAN HAYATI Vol 18 No 1 (2012): December 2012
Publisher : The East Java Biological Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (540.713 KB) | DOI: 10.23869/160

Abstract

The objective of this study was to investigate the effi ciency the TSS reduction of domestic wastewater by using hydraulic agitation in anaerobic biofi lter. The reactor consists of four columns. Each column has a sampling point. Upfl ow direction was operated in reactor in order to maximize the hydraulic agitation. Gravel was used as fi lter media to support the growth of biofi lm. The reactor treated wastewater of FST Airlangga University canteen which contains 8237.463 mg/l of TSS. Flow used during processing was 0.3 ml/min. Sampling TSS were performed on days 7, 14, 21, and 28. The results showed that the effi ciency of TSS were 64.57%, 76.16%, 94.23% and 98.46% respectively. The average TSS removal was 83.36%.
ANALISIS LAJU TIMBUNAN DAN KOMPOSISI SAMPAH DI PERMUKIMAN PESISIR KENJERAN SURABAYA Nita Citrasari; Nur Indradewi Oktavitri; Nuril A. Aniwindira
JURNAL PENELITIAN BIOLOGI BERKALA PENELITIAN HAYATI Vol 18 No 1 (2012): December 2012
Publisher : The East Java Biological Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (212.66 KB) | DOI: 10.23869/161

Abstract

Solid waste in Coastal Settlement Kenjeran Surabaya is alarming due to of the habit of the peoples to pile until 1 meter on surface coastal land. The habit can impact of environmental pollution to that area. So, the purpose of this research was to know the solid waste generation and the composition of solid waste in Coastal Settlement Kenjeran Surabaya. The methods used was weigth volume analysis. That result of research showed that the solid waste generation was 0.23 kg/person/day with the composition 76.21% of garbage, 10.83% of plastic, 5.33% of paper, 0.82% of glass, 1.21% of wood, 2.27% of fabric, 0.44% of metal, 0.08% of foam, and 2.58% of the others(soil, sand, and gravel). The solid waste generation and the composition of solid waste could be used for the planning of management in Coastal Settlement Kenjeran Surabaya.
Pattern of Biogas Production and Removal of Chemical Oxygen Demand in Semi Continues Hybrid Anaerobic Reactor Oktavitri, Nur Indradewi; Soegianto, Agoes; Rahman, T.; Saadah, Bidayatus; Trianingtyas, Deavy
IPTEK Journal of Proceedings Series Vol 1, No 1 (2014): International Seminar on Applied Technology, Science, and Arts (APTECS) 2013
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2014i1.229

Abstract

Anaerobic process had been used for treated highly organic substances, such as canteen wastewater  which had COD around 5000 mg/L. This research aims to investigate pattern of biogas production and COD removal in semi continue anaerobic process. HRT (Hydraulic Retention Times) were used in this research 1,5 hours. The reactor was contained of four cell coulombs from PVC, with height 1 meter. Gravel as media support in hybrid anaerobic reactor. The height of media support is 50 cm. This reactor operated for 14 days. Parameters had been observed are biogas production and COD.. Biogas production after reactor operated 7 days 0,6594 mL and after reactor operated 14 days is 1,4758 mL. COD removals are 38,89 mg/L after operated 7 days and 42,86 mg/L after operated 14 days. In conclusion, COD removal increased after reactor operated 7 and 14 days. The biogas production increased after 7 and 14 operated days. Increasing of biogas production more drastically than COD removal
Utilization of Fertilizers for Improving The Process Rate of Organic Material Degradation in Anaerobic Reactor Adelia Anju Asmara; Agoes Soegianto; Trisnadi Widyaleksono Catur Putranto; Hairul Amin; Nur Indradewi Oktavitri
IPTEK Journal of Proceedings Series Vol 1, No 1 (2014): International Seminar on Applied Technology, Science, and Arts (APTECS) 2013
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2014i1.225

Abstract

This study aimed to assess utilization of fertilizers as nutrient in the anaerobic reactor. Nutrient is one important characteristic of waste for the treatment. Nutrient is required for the growth and reproduction process of microorganisms which involved in the anaerobic process. The wastewater used in this research is tofu wastewater. Gandasil B fertilizer has N 6 mg/l and P 20 mg/l. While for Gandasil D fertilizer has N 20 mg/l and P 15mg/l. Anaerobic reactor has 1000 ml of capacity which contain 600 ml of wastewater, 100 ml of liquid fertilizer, and 300 ml of space blank. Anerobic reactor observed for 14 days with 5 observed parameters. Those parameters are TSS, VSS, COD, N, and P. After 14 days, added of Gandasil B fertilizer decreased the concentration of TSS, VSS, COD, N, and P amounted to 57,56%, 26,84%, 80,08%, 96,75%, and 93,18%. compared to the 0th day. While the addition of Gandasil D fertilizer decreased the parameters amounted to 3,48%, 6,21%, 86,72%, 58,10%, and 90,78%. In conclusion, Gandasil B fertilizer in the anaerobic reactor improves the rate of organic material degradation more effectively than Gandasil D fertilizer.Keywords - Anaerobic reactor, COD, fertilizer, N, nutrient, P, TSS, VSS
PENINGKATAN PRODUKTIVITAS KELOMPOK SANTRI DALAM BUDIDAYA JAMUR TIRAM PUTIH DI PONDOK PESANTREN DARUL HUDA, JABON, SIDOARJO Nima’tuzahroh Nima’tuzahroh; Fatimah Fatimah; Nur Indradewi Oktavitri
Jurnal Layanan Masyarakat (Journal of Public Services) Vol. 2 No. 1 (2018): Jurnal Layanan Masyarakat
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (741.543 KB) | DOI: 10.20473/jlm.v2i1.2018.30-35

Abstract

Islamic boarding schools generally have human and natural resources, and have a large influence on the communities around them. These resources can be optimized to increase students’ productivity with White Oyster Mushroom (JTP) cultivation. This community service aims to implement JTP cultivation to increase students’ productivity. The method that was carried out was to increase the knowledge of JTP cultivation, the formation of JTP cultivation cadres for making kumbung, JTP cultivation, JTP harvesting and sales. The JTP results show that the students’ insight increased by an average of 73% through the pretest and posttest scores during socialization. 3 Cadres are formed from coordination with the head of the cottage. The location chosen for mushroom cultivation is based on the criteria for JTP cultivation. JTP cultivation cadres have been able to make 4 x 6 m mushroom kumbung around the hut. Cultivation is done using 2000 baglog mushrooms for 1 month. Increased net income from santri through harvesting mushrooms from Rp. 0 to Rp. 4,000,000 every 2000 baglog after harvest. This increase in income can show an increase in santri productivity for income for Islamic boarding schools.AbstrakPondok pesantren umumnya memiliki sumber daya manusia dan sumber daya alam, dan memiliki pengaruh besar terhadap masyarakat di sekitar mereka. Sumber daya tersebut dapat dioptimalkan untuk peningkatan produktivitas santri dengan budidaya Jamur Tiram Putih (JTP). Pengabdian masyarakat ini bertujuan untuk penerapan budidaya JTP untuk peningkatan produktivitas santri. Metode yang dilakukan adalah peningkatan wawasan budidaya JTP, pembentukan kader budidaya JTP untuk pembuatan kumbung, berbudidaya JTP,pemanenan dan penjualan JTP. Hasil JTP menunjukkan wawasan santri meningkat rata-rata sebesar 73% melalui nilai pretest dan post test saat sosialisasi. 3 Kader dibentuk dari koordinasi dengan ketua pondok. Lokasi yang dipilih untuk budidaya jamur berdasarkan kriteria untuk budidaya JTP. Kader budidaya JTP telah mampu membuat kumbung jamur dengan ukuran 4 × 6 m di sekitar pondok. Budidaya dilakukan dengan menggunakan 2000 bag log jamur selama 1 bulan. Peningkatan penghasilan bersih dari santri melalui panen jamur dari semula Rp. 0 menjadi Rp. 4.000.000 tiap 2000 baglog setelah panen. Peningkatan penghasilan ini dapat menunjukkan peningkatan produktivitas santri untuk pemasukan bagi pondok pesantren.