Treatment of Textile Wastewater using Biodegradable Flocculants of Chitosan and Extracted Pandan Leaves

Norzita Ngadi, Nor Aida Yusoff
2013 Jurnal Teknologi  
The study investigated the performance of chitosan and extracted pandan leaves towards treatment of textile wastewater by using flocculation process. Pandan leaves were extracted by using solvent extraction method. Flocculation process was conducted using a Jar test experiment. The effect of dosage, pH, and settling time on reduction of COD, turbidity and color of textile wastewater was studied. The results obtained found that chitosan was very effective for reduction of COD, turbidity, color
more » ... turbidity, color and indicator for color. The best condition for COD and turbidity removal was achieved at 0.2 g dosage, pH 4 and 60 minutes of settling time. Under this condition, about 58 and 99% of COD and turbidity was removed, respectively. However, the results obtained using extracted pandan was opposite compared to the chitosan. Extracted pandan was not able to remove both COD and turbidity of the waste. Abstrak Kajian ini telah mengkaji keberkesanan kitosan dan ekstrak pandan terhadap rawatan air sisa tekstil dengan menggunakan proses flokulasi. Daun pandan telah diekstrak dengan menggunakan kaedah pengekstrakan pelarut. Prosess flokulasi telah dijalankan menggunakan ujian balang. Kesan dos, ph dan masa pemendakan terhadap penurunan COD, kekeruhan dan warna air sisa tekstil telah dijalankan. Keputusan yang diperolehi mendapati kitosan adalah sangat effektif bagi penurunan COD, kekeruhan, warna dan penyerapan-UV. Kondisi yang terbaik untuk penurunan COD dan kekeruhan dicapai pada dos, 0.2g, ph 4 dan masa pemendakan, 60 minit. Pada kondisi ini, lebih kurang 58 dan 99% COD dan kekeruhan dapat diturunkan, masing-masing. Walau bagaimanapun, keputusan yang diperolehi menunjukkan keputusan yang sebaliknya apabila ekstrak pandan digunakan. Ekstrak pandan tidak dapat untuk menurunkan COD dan kekeruhan air sisa tekstil.
doi:10.11113/jt.v64.1647 fatcat:2yalagfedvcyxacwvqc5xoqnfq