Prestasi kalium alum (KAl(SO4)2) sebagai agen penggumpal dalam merawat air sisa daripada penggahar air gasifier biomass telah dikaji dalam rawatan secara kimia. Kalium alum telah terbukti mampu menyingkirkan jumlah pepejal terampai (TSS), jumlah pepejal terlarut (TDS), dan mengurangkan kekeruhan air pada kepekatan optimum. Rawatan telah dilakukan dengan menggunakan radar jar. Setelah kalium alum dicampur di dalam bikar, percampuran pantas telah dilakukan dengan menggunakan radar jar sebelum sisa gumpalan dibiarkan untuk mendap selama 30 minit. Sebelum rawatan dimulakan, sifat awal sisa air seperti pH, suhu, kekeruhan, TSS, TDS dan logam berat di dalam air sisa telah dikaji. Kehadiran logam berat di dalam air sisa telah dikaji dengan menggunakan spektroskopi penyerapan atom (AAS). AAS ialah satu prosedur spektro-analisis untuk mengkaji jumlah elemen kimia dengan menggunakan penyerapan sinaran optik (cahaya) oleh atom bebas yang berada dalam keadaan gas. Pada kepekatan optimum, kecekapan penyingkiran untuk TSS dan TDS, untuk masing-masing telah ditemui mencapai 62.5 dan 52.8%.
_______________________________________________________________________________________________________
The performance of potassium alum or also known as potash alum (KAl(SO4)2) as coagulant on treating wastewater from biomass gasifier water scrubber were investigated in a chemical treatment. Potash alum is proven to be capable of removing total suspended solids (TSS), total dissolved solid (TDS), and decrease the turbidity at optimum concentrations. The treatments were performed in a jar apparatus. The rapid mixing was performed in jar test after the potash alum were added in the beaker before the floc were allowed to settle down for 30 min. Before the treatments were started, the initial conditions of wastewater such as pH, temperature, turbidity, TSS, TDS and heavy metals contain in wastewater were being investigated. The presence of heavy metals in the wastewater were being checked by using atomic absorption spectroscopy (AAS). AAS is a spectro-analytical procedure for the quantitative determination of chemical elements using the absorption of optical radiation (light) by free atoms in the gaseous state. At optimum concentrations, the removal efficiency were found to achieve 62.5 and 52.8% for TSS and TDS, respectively.
Performance study of potash alum on wastewater treatment system from biomass gasifier water scrubbe / Norshahirah Adina Zainol Abidin