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All Journal Jurnal Pendidikan dan Pembelajaran Kimia (JPPK) EKOLOGIA : Jurnal Ilmiah Ilmu Dasar dan Lingkungan Hidup Warta AKAB Indonesian Journal of Chemical Studies (Indones. J. Chem. Stud.)
Fadela, Dian Mira
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Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Education Environmental Science Materials Science & Nanotechnology Mathematics

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Efisiensi Penurunan Kadar COD, TSS, dan TDS pada Air Limbah Industri Pangan menggunakan Koagulan Poly Alumunium Chloride dengan metode Jar Test Zakaria, Ahmad; Sauri, Sopian; Fadela, Dian Mira; Wardhani, Puspita Sri Ayu
WARTA AKAB Vol 45, No 2 (2021): Warta AKAB
Publisher : Politeknik AKA Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (306.256 KB) | DOI: 10.55075/wa.v45i2.60

Abstract

Industri pangan menghasilkan air limbah berbahan organik dan padatan tersuspensi maupun terlarut yang tinggi. Salah satu proses pengolahan air limbah yaitu dengan proses koagulasi-flokulasi yang bertujuan untuk menghilangkan padatan tersuspensi dan zat organik yang dapat menyebabkan kekeruhan serta bau dengan penambahan koagulan. Penambahan koagulan pada instalasi pengolahan air limbah (IPAL) tidak dilakukan secara kuantitatif, sehingga perlu dilakukan percobaan dengan metode jar test. Tujuan percobaan untuk mengetahui pH dan dosis optimum serta efisiensi koagulan poly aluminium chloride (PAC) untuk menurunkan kadar chemical oxygen demand (COD), total suspended solid (TSS), dan total dissolved solid (TDS). Hasil uji parameter COD, TSS, dan TDS dibandingkan dengan Surat Keputusan Gubernur Tingkat 1 Jawa Barat (SK Gub TK 1 Jabar) No. 6 Tahun 1999 tentang Baku Mutu Limbah Cair Bagi Kegiatan Industri di Jawa Barat. Berdasarkan hasil percobaan diperoleh kondisi optimum koagulan PAC pada pH air limbah 6–7 dengan dosis koagulan optimum pada (80–90) mg/L. Hasil pengujian parameter TS, TDS, TSS, kekeruhan dan COD berturut-turut memberikan nilai efisiensi sebesar (52,6-57,8)%, (53,9-55,5)%, (52,4-58,1)%, (97,8-99,1)%, dan (71,6–77,1)%. Percobaan yang dilakukan membuktikan bahwa koagulan PAC mampu menurunkan kadar pada parameter uji dengan nilai efisiensi yang cukup besar.
PENINGKATAN KETERAMPILAN PROSES SAINS SISWA PADA MATERI LAJU REAKSI MELALUI PENDEKATAN SAINTIFIK Dian Mira Fadela; Noor Fadiawati; Lisa Tania
Jurnal Pendidikan dan Pembelajaran Kimia Vol 5, No 3 (2016): Jurnal Pendidikan dan Pembelajaran Kimia
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (504.577 KB)

Abstract

This research was aimed to describe the effectiveness of scientific approach to improve science process skills on reaction rate topic. The method of the research was quasi experimental with The Matching Only Pretest-Postest Control Group Design. The population of this research was students of the 11th grade of IPA SMAN 9 Bandarlampung on academic year 2016-2017. Sampling was done by purposive sampling and obtained class the 11th grade IPA-5 and the 11th grade IPA-6. The effectiveness of scientific approach in the learning was showed by the significant difference of n-gain between experimental and control classes and also the improvement of students activity. The results showed that the average n-gain of science process skills of experimental and control clasess were 0,71 and 0,23 respectively and also improve the student activity. The result of hypothesis testing showed that scientific approach was effective to improve the science process skills in learning the reaction rate topic.Penelitian ini bertujuan untuk mendeskripsikan efektivitas pendekatan saintifik dalam meningkatkan keterampilan proses sains pada pembelajaran laju reaksi. Metode penelitian yang digunakan adalah kuasi eksperimen dengan The Matching Only Pretest-Postest Control Group Design. Populasi dalam penelitian ini adalah seluruh siswa kelas XI IPA SMA Negeri 9 Bandarlampung Tahun Pelajaran 2016-2017. Pengambilan sampel dilakukan dengan purposive sampling dan diperoleh kelas XI IPA-5 dan XI IPA-6. Efektivitas pendekatan pembelajaran ditunjukkan berdasarkan perbedaan n-gain yang signifikan antara kelas eksperimen dan kontrol serta peningkatan aktivitas siswa. Hasil penelitian menunjukkan rata-rata n-gain keterampilan proses sains untuk kelas eksperimen dan kontrol masing-masing sebesar 0,71 dan 0,23 serta meningkatkan aktivitas siswa. Hasil pengujian hipotesis menunjukkan bahwa pendekatan saintifik efektif dalam meningkatkan keterampilan proses sains pada pembelajaran laju reaksi.Kata kunci: laju reaksi, keterampilan proses sains, pendekatan saintifik.
Penentuan Kondisi Optimum Koagulan Poli Alumunium Klorida Metode Jar Test Berdasarkan Penurunan Konsentrasi Total Suspended Solid (TSS) Air Limbah menggunakan Response Surface Method Zakaria, Ahmad; Fadela, Dian Mira; Lestari, Endang Sri; Tambunan, Jenny Anna Margaretha; Aynuddin, Aynuddin; Fachrurrazie, Fachrurrazie; Razak, Risdha Sagita
Journal Warta AKAB Vol 47, No 1 (2023): Warta AKAB
Publisher : Politeknik AKA Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55075/wa.v47i1.181

Abstract

Air limbah yang berasal dari produksi minyak wangi mengandung beberapa bahan kimia yang mencemari lingkungan. Penambahan koagulan adalah metode pengolahan air limbah untuk menghilangkan material organik dan padatan tersuspensi yang menyebabkan timbulnya kebauan dan kekeruhan. Dengan menggunakan metode jar test, penambahan precipitants non-kuantitatif ke instalasi pengolahan air limbah (IPAL) dapat disesuaikan. Tujuan pengujian adalah menentukan pH dan kondisi optimum koagulan polyalumunium chloride (PAC) dalam pengujian dengan metode jar test berdasarkan pengurangan Total Suspended Solid (TSS) dalam limbah menggunakan metode statistik respon permukaan. Berdasarkan pengujian yang telah dilakukan, koagulan PAC memiliki kondisi optimum pada pH efluen sebesar 7,5 dengan dosis koagulan yang optimum sebesar 142,42 mg/l. Nilai efisiensi berdasarkan hasil pengujian parameter TSS sebesar 53,75%. Pengujian ini menunjukkan bahwa koagulan PAC memiliki efisiensi yang cukup tinggi dalam menurunkan nilai TSS. Kata kunci: TSS, jar test, koagulan, PAC, respon permukaan
Study of Anaerobic and Aerobic Fertilizers of Organic Waste Treatment Fadela, Dian Mira; Zakaria, Ahmad; Pradipta, Adya Rizky
Indonesian Journal of Chemical Studies Vol. 3 No. 2 (2024): Indones. J. Chem. Stud., December 2024
Publisher : Indonesian Scholar Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55749/ijcs.v3i2.48

Abstract

Phosphorus is a critical nutrient for plant growth, significantly enhancing agricultural productivity and ecosystem sustainability. Organic waste-based fertilizers offer a sustainable solution to boost soil phosphorus levels while addressing waste management challenges. This study evaluated the phosphorus content of anaerobic and aerobic fertilizers derived from organic waste, focusing on factors that influence phosphorus dynamics during composting. Composting methods and feedstock composition affected phosphorus transformation and availability, with temperature, moisture, aeration, and microbial activity playing pivotal roles in mineralization, immobilization, and solubilization. The experiment used market waste, pineapple peel, dry leaves, sawdust, water, sugar, manure, and EM4. The composting process involved weekly monitoring of pH, temperature, and compost height. The results showed that the pH of the anaerobic compost ranged from 7.2 to 7.4, meeting the SNI 19-7030-2004 standard. The mature compost color was brownish-black, which also complied with the standard. Phosphorus contents as P2O5 were 1712 mg/kg in aerobic fertilizer and 2653 mg/kg in anaerobic fertilizer. Phosphorus is crucial for root development, water, and nutrient absorption, and enhances plant tolerance to drought. It also affects flower and fruit formation, affecting crop yield quality and quantity. This study highlighted the importance of understanding phosphorus dynamics to optimize nutrient management and improve organic waste utilization in agriculture. Future research should explore the phosphorus transformation mechanisms and innovative composting techniques to enhance phosphorus availability for plant uptake
KARAKTERISASI PUPUK ORGANIK CAMPURAN LIMBAH SAYUR DAN KULIT BUAH MELALUI PROSES FERMENTASI ANAEROB Fadela, Dian Mira; Zakaria, Ahmad; Lestari, Endang Sri; Tambunan, Jenny Anna Margaretha; Aynuddin, .; Djanis, Ratnawati L.; Styani, Erna; Rosalina, .; Nurdiani, .; Rachmi, Silvia; Anwar, Chairil; Fachrurrazie, .; Djasmasari, Wittri
Ekologia: Jurnal Ilmiah Ilmu Dasar dan Lingkungan Hidup Vol 24, No 2 (2024): Ekologia : Jurnal Ilmiah Ilmu Dasar dan Lingkungan Hidup
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/ekologia.v24i2.10897

Abstract

Food waste is a significant environmental issue, leading to resource wastage and greenhouse gas emissions. This study examines the treatment of food waste through anaerobic fermentation (AF) and composting, aiming to recover value from waste and reduce negative environmental impacts. In this research, food waste, fruit peels waste, dry leaves, rotten kale and mustard greens, and other organic materials were composted using an anaerobic composter, with observations covering pH, temperature, moisture content, and nutrient levels such as nitrogen, phosphorus, and heavy metals. The results show that the compost pH ranged between 7.2 and 7.4, meeting the standards of SNI 19-7030-2004. Total nitrogen content reached 1.78-3.10%, while phosphorus ranged from 0.5-1.2%. Heavy metal concentrations, including lead (Pb) and cadmium (Cd), were below the safe limits for organic fertilizers. In conclusion, AF and composting techniques effectively convert food waste into high-quality organic fertilizer that meets national standards, with the potential to reduce environmental pollution.
Co-Authors Ahmad Zakaria Aynuddin, . Aynuddin, Aynuddin Chairil Anwar Djanis, Ratnawati L. Djasmasari, Wittri Endang Sri Lestari Fachrurrazie, . Fachrurrazie, Fachrurrazie Lisa Tania Noor Fadiawati Nurdiani, . Pradipta, Adya Rizky Rachmi, Silvia Razak, Risdha Sagita Rosalina, . Sauri, Sopian Styani, Erna Tambunan, Jenny Anna Margaretha Wardhani, Puspita Sri Ayu