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Comparative performance of natural coagulants for the treatment of fish farm wastewater

Comparative performance of natural coagulants for the treatment of fish farm wastewater / Fakhira Huda Che Yusuf
Proses pembekuan-pemberbukuan menggunakan chitosan dan ekstrak daripada benih Moringa oleifera sebagai bahan gumpal semula jadi telah dilaporkan untuk rawatan air sisa ternakan ikan dalam kajian ini. Objektif utama yang perlu dicapai adalah untuk menentukan bahan gumpal yang terbaik untuk penyingkiran tertinggi pepejal terampai melalui proses pembekuan-pemberbukuan. Oleh itu, rawatan pengoptimuman untuk mencapai tujuan ini telah dilakukan dengan menggunakan ujian balang dan menggunakan Kaedah Gerak Balas Permukaan (KGBP) untuk menganalisa keputusan.24 sepenuh faktorial Reka Bentuk Komposit Pusat (RBKP) telah dipilih untuk menerangkan kesan dan interaksi empat faktor: dos bahan gumpal, pH, masa pencampuran dan masa tenggelam. 84% daripada penyingkiran kekeruhan dapat diperhatikan melalui sampel air sisa yang dirawat dengan chitosan pada keadaan yang optimum iaitu 100 mg / l dos bahan gumpal, pH 6, 15 minit masa pencampuran dan 10 minit masa tenggelam manakala 47% penyingkiran kekeruhan pada keadaan optimum 400 mg / l dos bahan gumpal, pH 10, 15 minit masa pencampuran dan 10 minit masa tenggelam dapat dilihat untuk ekstrak benih M. oleifera. Sampel air sisa yang dirawat menggunakan keadaan pengoptimuman yang dipilih telah dianalisis untuk kadar ammonia, Permintaan Oksigen Kimia (POK), jumlah pepejal terampai (TSS), jumlah pepejal meruap (TVS) dan kepekatan fosfat. Chitosan menunjukkan kecekapan penyingkiran yang lebih baik daripada M. oleifera dengan 64% penyingkiran POK, 70% ke atas TSS, 64% ke atas VSS dan 80% penyingkiran pada fosfat manakala M. oleifera mempunyai prestasi yang sedikit baik dalam kecekapan penyingkiran ammonia pada 32%. _______________________________________________________________________________________________________ A coagulation – flocculation process using chitosan and Moringa oleifera seeds extract as natural coagulants is reported for fish farm wastewater treatment in this study. The main objective to be achieved is to determine the best coagulant for highest removal of suspended solid through the coagulation - flocculation process. Therefore, optimization treatment to serve this purpose was performed using jar tests and applying a response surface methodology (RSM) to the results. A 24 full-factorial central composite design (CCD) was chosen to explain the effect and interaction of four factors: coagulant dosage, pH, mixing time and settling time. The CCD is successfully demonstrated to efficiently determine the optimized parameters, where 84% of turbidity removal was observed for wastewater samples treated with chitosan at optimized condition of 100 mg/l coagulant dosage, pH 6, 15 minutes mixing time and 10 minutes settling time and 47% of turbidity removal at optimized condition of 400 mg/l coagulant dosage, pH 10, 15 minutes mixing time and 10 minutes settling time for M. oleifera seeds extract. The wastewater samples treated using the selected optimized condition were further analyzed on their final values of ammonia, Chemical Oxygen Demand (COD), total suspended solids (TSS),total volatile solids (TVS) and phosphate concentrations. Chitosan demonstrated a better removal efficiency than M. oleifera with 64% removal on COD, 70% on TSS, 64% on VSS and 80% removal on phosphate while M. oleifera has a slightly better performance in ammonia removal efficiency at 32%. Hence, chitosan is proven to be a better choice of coagulant than M.oleifera.
Contributor(s):
Fakhira Huda Che Yusuf - Author
Primary Item Type:
Final Year Project
Identifiers:
Accession Number : 875007518
Language:
English
Subject Keywords:
flocculation process; chitosan; Moringa oleifera seeds
First presented to the public:
6/1/2018
Original Publication Date:
7/18/2018
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Chemical Engineering
Citation:
Extents:
Number of Pages - 88
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2018-07-18 12:03:38.396
Date Last Updated
2019-01-07 11:24:32.9118
Submitter:
Mohd Jasnizam Mohd Salleh

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Comparative performance of natural coagulants for the treatment of fish farm wastewater1 2018-07-18 12:03:38.396