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All Journal Journal of Engineering and Technological Sciences Jurnal Purifikasi INFOMATEK: Jurnal Informatika, Manajemen dan Teknologi INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY
Fadjari Lucia Nugroho
Department Of Environmental Engineering, Universitas Pasundan, Bandung, Indonesia
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Energy Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering

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Removal of Phosphate from Synthetic Aqueous Solution by Adsorption with Dolomite from Padalarang Nugroho, Fadjari Lucia; Mulyatna, Lili; Situmeang, Anggi Doli Wiranata
Journal of Engineering and Technological Sciences Vol 46, No 4 (2014)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (774.093 KB) | DOI: 10.5614/j.eng.technol.sci.2014.46.4.5

Abstract

The presence of phosphate in wastewaters can cause eutrophication of surface  water bodies leading  to algal-blooming  in the aquatic environment and degradation  of  water  quality.  Phosphate  removal  from  wastewaters  by conventional biological treatment removes only 10-30% of the phosphate, whilst chemical  treatment  using  precipitants  such  as  calcium  or  iron  salts,  although effective,  is  expensive  and  produces  water-rich  sludge  which  must  be  further treated.  Hence,  phosphate  removal  by  adsorption  in  the  form  of  Ca -phosphate has been proposed as an alternative to the more traditional methods. This study investigated the feasibility of using dolomite–a common sedimentary rock–from Padalarang, West Java, Indonesia  as the  adsorbent  for the removal of phosphate from synthetic aqueous solution. Chemical analysis revealed that the Padalarang dolomite  contains  33.6-36.2%  CaO.  Batch  experiments  at  room  temperature indicated  that  optimum  removal  of  phosphate  was  achieved  at pH  9.  At  25°C , where  increasing  concentrations  of  phosphate  (10–100  mg/L)  increased phosphate  adsorption  (2.15-31.3  mg/g)  by  the  dolomite.  The  adsorption  of phosphate could be described by the Langmuir isotherm model, with constants Qm= 476.19 mg/g, K L= 0,00106 L/mg and equilibrium parameter (R L): 0.904  – 0.989. Phosphate adsorption by dolomite not only permits its removal but also its  potential recovery for reuse.
Removal of Phosphate from Synthetic Aqueous Solution by Adsorption with Dolomite from Padalarang Fadjari Lucia Nugroho; Lili Mulyatna; Anggi Doli Wiranata Situmeang
Journal of Engineering and Technological Sciences Vol. 46 No. 4 (2014)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2014.46.4.5

Abstract

The presence of phosphate in wastewaters can cause eutrophication of surface  water bodies leading  to algal-blooming  in the aquatic environment and degradation  of  water  quality.  Phosphate  removal  from  wastewaters  by conventional biological treatment removes only 10-30% of the phosphate, whilst chemical  treatment  using  precipitants  such  as  calcium  or  iron  salts,  although effective,  is  expensive  and  produces  water-rich  sludge  which  must  be  further treated.  Hence,  phosphate  removal  by  adsorption  in  the  form  of  Ca -phosphate has been proposed as an alternative to the more traditional methods. This study investigated the feasibility of using dolomite"“a common sedimentary rock"“from Padalarang, West Java, Indonesia  as the  adsorbent  for the removal of phosphate from synthetic aqueous solution. Chemical analysis revealed that the Padalarang dolomite  contains  33.6-36.2%  CaO.  Batch  experiments  at  room  temperature indicated  that  optimum  removal  of  phosphate  was  achieved  at pH  9.  At  25°C , where  increasing  concentrations  of  phosphate  (10"“100  mg/L)  increased phosphate  adsorption  (2.15-31.3  mg/g)  by  the  dolomite.  The  adsorption  of phosphate could be described by the Langmuir isotherm model, with constants Qm= 476.19 mg/g, K L= 0,00106 L/mg and equilibrium parameter (R L): 0.904  "“ 0.989. Phosphate adsorption by dolomite not only permits its removal but also its  potential recovery for reuse.
Removal of Reactive Yellow 4R Azo Dye from Synthetic Aqueous Solution by Alkali Hydrothermally Activated Fly Ash Fadjari Lucia Nugroho; Deni Rusmaya; Angela Deviliana
Journal of Engineering and Technological Sciences Vol. 54 No. 3 (2022)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2022.54.3.12

Abstract

Dye-containing wastewater affects the aesthetic quality, transparency and gas solubility of natural water bodies, hence colored wastewater must be treated before being discharged. Physical removal of dyes from wastewater can be achieved using activated carbon. However, this technique is expensive, so there is a need to find less expensive alternatives. A waste product generated from coal-fired plants known as fly ash is a sorbent that can be used to remove pollutants from solution. This study investigated the effectiveness of using alkali (NaOH) hydrothermally activated fly ash to remove Reactive Yellow 4R azo dye from synthetic aqueous solution. Na2O in alkali hydrothermally activated fly ash increases thirteen-fold. SEM observations revealed that the raw fly ash consisted of smooth round shaped particles, whereas the activated fly ash was composed of granular crystalline particles. Batch adsorption experiments of the dye at 25 °C showed that increasing the activated fly ash quantity (0.5 to 3.5 g) increased the removal efficiency from 30% to 39.3%. The Freundlich isotherm adsorption model best described the adsorption of Reactive Yellow 4R dye by alkali hydrothermally activated fly ash with KF = 1.49 x 10-21 mg/g. The dye adsorption kinetics by activated fly ash followed the Lagergren pseudo second order model, with calculated qe = 2.65 mg/g; k2 = 0.06 g/mg; and calculated h = 0.42 mg/g min‑1. Dye removal occurred primarily through surface adsorption and very little through intra-particle diffusion.
A COMPARATIVE STUDY ON THE REMOVAL OF REMAZOL GOLDEN YELLOW 6 DYE BY MIXED CULTURE OF DEAD FUNGAL BIOMASS AND ACTIVATED CARBON Fadjari Lucia Nugroho
Purifikasi Vol 9 No 1 (2008): Jurnal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Environmental and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25983806.v9.i1.135

Abstract

Remazol Golden Yellow 6 is a vinyl sulfone reactive dye with an azo-based chromophore, which produces a coloured wastewater that is difficult to treat by biological treatment. Physical adsorption of coloured wastewaters with activated carbon although effective is economically expensive. It is therefore necessary to find effective and economic alternatives for absorbant, such as microorganisms. The biosorption capacity of a mixed culture of dead fungi biomass (Aspergillus sp., Penicillium sp., and Saccharomyces sp.) for Remazol Golden Yellow 6 was examined as a function of initial pH and initial dye concentration. The results were compared to the adsorption capacity of a commercial activated carbon. Optimum initial biosorption pH was determined as 1. The percent dye removal of 0.5 g biomass with initial dye concentrations of 60 mg/l, 80 mg/l and 100 mg/l were 90.3%, 93.6% and 97.6% respectively with equilibrium established within 75, 125 and 150 minutes. In comparison, dye removal with granular activated carbon for the same dye concentrations were respectively 32.1%, 36.4% and 37.8 % with equilibrium time at 275, 400 and 475 minutes.
IDENTIFIKASI MIKROORGANISME PADA EM1 DAN MUDBALL (DEDAK PADI, TANAH LIAT DAN EM1) YANG DIGUNAKAN DALAM PENJERNIHAN AIR SUNGAI BUATAN Fadjari Lucia Nugroho; Deni Rusmaya; Muthia Damayanti
INFOMATEK Vol 19 No 2 (2017): Volume 19 No. 2 Desember 2017
Publisher : Fakultas Teknik, Universitas Pasundan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (495.99 KB) | DOI: 10.23969/infomatek.v19i2.631

Abstract

Sungai merupakan salah satu sumber air bagi kehidupan. Semua mahluk hidup memerlukan air untuk dapat mempertahankan kelangsungan hidupnya. Air sungai termasuk salah satu bentuk badan air permukaan yang banyak digunakan oleh masyarakat. Namun sangat disayangkan bahwa dengan berjalannya waktu sungai tidak hanya digunakan sebagai sumber air tetapi juga tempat untuk membuang air limbah termasuk limbah domestik. Masih banyak yang secara langsung membuang air limbah domestik ke sungai, seperti halnya yang dialami sungai Cikapundung di Kota Bandung. Hal ini mengakibatkan penurunan kualitas air sungai. Salah satu upaya penanggulangan penurunan kualitas air sungai akibat pencemaran oleh limbah domestik adalah dengan menyisihkan langsung kontaminan dari air sungai dengan menggunakan Mudball yang terbuat dari dedak padi, tanah liat dan EM1 aktif. Penelitian ini bertujuan untuk mengidentifikasi jenis mikroorganisme yang terkandung dalam EM1 aktif dan Mudball. Identifikasi bakteri dilakukan dengan pemeriksaan morfologi melalui pewarnaan Gram dan pewarnaan spora, sedangkan identifikasi jamur juga dilakukan dengan pemerikasaan morfologi preparaat basah. Hasil menunjukkan adanya perbedaan jenis mikroorganisme yang ditemukan pada EM1 aktif dengan yang ditemukan di Mudball di mana bakteri pada EM1 aktif teridentifikasi sebagai Bacillus sp sedangkan pada Mudball bakteri yang ditemukan berbentuk baksil, Gram negatif dan tidak berspora sehingga tidak termasuk jenis Bacillus sp. Jamur yang teridentifikasi adalah Bipolaris sp pada EM1 aktif dan Mucor sp pada Mudball.
THE USE OF ECO ENZYME-BASED MUDBALLS IN REDUCING COD AND TSS POLLUTANTS IN POLLUTED RIVERS Yustiani, Yonik Meilawati; Nugroho, Fadjari Lucia; Halimah, Mimi; Agustina, Monica; Herbimaya, Azahra Siti; Sudarjanto, Gatut; Humam, Ivan Aliyatul
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 8, NUMBER 1, APRIL 2025
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v8i1.22601

Abstract

Aim: This study aims to investigate the effectiveness of Eco Enzyme and EM1-based mudballs in improving river water quality by reducing COD and TSS. Methodology and Results: The study was conducted using an experimental method in the laboratory with four variations of mudballs, i.e. mudballs without additions, mudballs with Eco Enzyme, mudballs with effective microorganisms (EM1), and mudballs with a combination of Eco Enzyme and EM1. Artificial river water samples were made using glucose and kaolin solutions, and water quality was measured using the closed reflux method for COD, the gravimetric method for TSS, and pH measurements. Conclusion, significance and impact study: The results showed that all variations of mudballs were able to reduce COD and TSS values, but only the variation with a combination of Eco Enzyme and EM1 showed the most significant reduction in COD even though it had not reached the quality standard according to Government Regulation No. 22 of 2021. This variation was also effective in removing 100% TSS, and all variations managed to maintain the pH value within a safe range (6-9). The conclusion of this study is that the combination of Eco Enzyme and EM1 in mudballs provides the best results in improving river water quality, especially in TSS removal. However, further optimization is needed to remove COD to meet water quality standards.
Co-Authors Agustina, Monica Angela Deviliana Anggi Doli Wiranata Situmeang Anggi Doli Wiranata Situmeang Herbimaya, Azahra Siti Humam, Ivan Aliyatul Lili Mulyatna Mimi Halimah Muthia Damayanti Rusmaya, Deni Sudarjanto, Gatut Yustiani, Yonik Meilawati