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Mawardi Mawardi

Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Padang Jln. Prof. Dr. Hamka Air Tawar Padang

Author-ID : 4415583

Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Materials Science & Nanotechnology

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Pemanfaatan Limbah Lumpur Industri Crumb Rubber Sebagai Adsorben Ion Cr(VI) yang Diaktivasi dengan H3PO4 Resti Hariyani; Salmariza Sy; Mawardi Mawardi
Jurnal Periodic Jurusan Kimia UNP Vol 2, No 2 (2013)
Publisher : Departemen Kimia FMIPA UNP

Utilization of sludge waste from wastewater treatment system using active sludge systems of Crumb Rubber Industry PT.Teluk Luas Lubuk Begalung Padang to be activated carbon that was activated by H3PO4 as adsorbent of ions Cr (VI) has been done. Characterization of activated carbon was conducted according to SNI 06-3730-1995, including the determination of iodine absorption, moisture content, and the amount of carbon bound. Besides, this research was also conducted using batch system treatment to activated carbon and inactivated carbon, including pH, contact time, and initial concentration of solution. The equation of Langmuir Isotherm was used to determine maximum capacity of activated carbon adsorption to Cr (VI). Results showed that the absorption of iodine was 48,26%, moisture content was 0.14%, and carbon bound was 24,925%. The optimum pH, the contact time and optimum concentration respectively was pH3, 60 minutes and 50 mg/L for an activated carbon adsorbent and pH2, 120 minutes and 50 mg/L for inactivated carbon adsorbent. The activator influenced to the adsorption of Cr(VI). The determination of the optimum adsorption for activated carbon adsorbent was 1,11 and 1,99 mg/g, meanwhile for inactivated carbon, it was 0,08 and 1,16 mg/g.

OPTIMASI TANAH NAPA SEBAGAI ADSORBEN ION LOGAM Cd (II) Atina Khairat; Mawardi Mawardi; Hary Sanjaya
Jurnal Periodic Jurusan Kimia UNP Vol 2, No 2 (2013)
Publisher : Departemen Kimia FMIPA UNP

The effort of handing waste which containing heavy metals examined continuesly, once of effort is adsorption method. In the research, examined about optimum condition determinating of metal ion Cd (II) adsorption by Napa soil adsorption from Solok The Aripan’s area. The napa containts silica 70,979 % and alumina 20,748 %, the amount of silica and alumina in napa almost equals it’s concentration with natural zeolite. The purpose of research is to determine the effect of napa maximum adsorption capacity on metal ions Cd (II), as well as the effect of initial concentration solution, pH solution, particle size of adsorbent, heating temperature adsorbent and flow rate eluent. The research was conducted in two phases, that is the preparation and conduct of the examined. The preparation stage includes the prepare of the tools, materials and samples. The implementation stage begins with a preparation of samples, then used it as the metal ion adsorbents Cd (II). Measurement of the ions Cd (II) concentration conducted with SSA at wavelength 283,3 nm. These results indicate that the optimum initial concentration is 150 mg/L, pH solution is 4, while the particle size is 850 ʮm, temperature of heating the adsorbent is 125 0C, and the flow rate is 20 drops/minute. By using the langmuir adsorption isotherm equation obtained maximum adsorption capacity of the napa metal ions Cd (II) is equal to 0,999 mg/g. The adsorption of metal ions Cd (II) at waste water in Chemical Laboratory Mathematic and saint Faculty UNP has adsorption efficiency 68,72 %.

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