PEAT WATER TREATMENT INTO CLEAN WATER USING COMPOSITE CERAMIC MEMBRANE NANOFILTRATION TECHNOLOGY

The provision of clean water is an urgent need that must be realized in order to solve the problems that continue to be faced by people living on peatlands. The purpose of this research is to process peat water into clean water using nanofiltration method by ceramic membrane based on clay, activated carbon nanoparticles of Oil Palm Empty Fruits Bunch (OPEFB) as an additive and iron powder as a reinforcement. Peat water is first neutralized by addition of quicklime then processed through various microfiltration methods with sponges with pore sizes, namely 0.5 µm, 0.3 µm 0.1 µm and activated carbon and finally processed through ceramic membranes made from OPEB activated carbon nanoparticle additives. The pressure is set at 1 bar, 1.5 bar and 2 bar. The raw material for peat water from the Telang River is acidic with a pH value of 4.1 and contains TSS 147.5 mg/L, Fe 0.33 mg/L, Mn 0.56 mg/L, Zn 0.02 mg/L, NH3- N 0.58 mg/L, NO2-0.19 mg/L, PO4-3 0.264 mg/L, and BOD5 12.1 mg/L. It was found that, the greater the transmembrane pressure difference and the longer the operating time used, the better the permeate yield. The difference in pressure of 2 bar gives the best results in reducing the levels of contaminants contained in peat water with an average percent rejection reduction of TSS 91.89%, Fe 70%, Mn 93.2%, Zn 95%, NH3-N 68, 6%, NO2- 70%, PO4-3 38.14%, and BOD5 91.99%

PEMANFAATAN ARANG BAMBU SEBAGAI FILLER DALAM PEMBUATAN KARET ROLL CONVEYOR

Penelitian ini bertujuan untuk mengetahui pengaruh dari filler dengan memanfaatkan bambu bekas pada pembuatan produk karet roll conveyor. Tahapan penelitian ini antara lain : pembuatan arang bambu, pembuatan vulkanisat karet dengan memvariasikan konsentrasi arang bambu yaitu formula A = 0 phr, formula B = 20 phr, formula C = 40 phr, formula D = 60 phr dan formula E = 80 phr. Berdasarkan pengujian karakteristik vulkanisat diperoleh hasil uji vulkanisat karet dengan perlakuan terbaik didapat pada formula B (Variasi konsentrasi arang bambu 20 phr dan carbon black 80 phr, dengan nilai hasil uji yaitu uji visual tidak ada cacat, kekerasan 80 shore A, tegangan putus 11,8 MPa, perpanjangan putus 130% dan ketahanan sobek 27,2 kN/m. Hasil uji untuk variasi lain tidak berbeda signifikan, dengan demikian, penggunaan arang bambu dapat digunakan sebagai substitusi carbon black