ELECTROCHEMICAL OPTIMIZATION FOR SOIL CONTAMINATED PETROLEUM REMEDIATION

• Main Author: (NIM : 25313040), AMILIA
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/21011
• Institution: Institut Teknologi Bandung

In general, Technology application of direct current in engineering field is widely found including the application for treating contaminated soil. Soil treatment technology by using direct current or electrochemical remediation is a promising alternative in contaminated soil treatment as the flexibility of field application, in-situ or ex-situ treatment, using a low-voltage direct current, treating inorganic pollutants, including various types of organic pollutants. Wide range of application of electroremediation in different types of pollutans and soil type require further study due to unique reactions depend on pollutant and the type of soil. The one dimensional laboratory experiment conduct for compairing unenhanced electrochemical remediation technique (distilled water eluent) and enhanced electrochemical remediation technique (Na2SO4 eluent). Monitored in three areas of soil, near anode, middle, and near cathode to study overall electrochemical remediation process for three types of soil (sand, clay loam and sandy loam). Electrolyte solution using Na2SO4 in overall process is better. After 24hours of remediation average remaining TPH treated by enhance electrochemical remediation is 0.13% for sand soil, 0.13% also for clay loam soil, and 1,99% for sandy loam soil..Dense soil such as clayey soil with poor permeability also restrics the ability of electrochemical remediation for TPH. The remediation rate within 24hours for each soil type associated with Na2SO4 and distilled water as eluent successively: sand soil got 0.52% TPH/hour and 0,37% TPH/hour; clay loam soil 0,15% TPH/hour and 0,09% TPH/hour; sandy loam soil got 0.21% TPH/hour and 0.26% TPH/hour. Soil with good permeability tend to has good performance treated by electrochemical remediation. Proven by the results which is sand soil (permeabily 8.078x10-4 cm/sec) has the best performance to be treated among two others (clay loam soil with permeability 4.443x10-6 cm/sec and sandy loam soil with permeability 6.838x10-5 cm/sec). Average TPH decline in first order kinetics treated by unenhanched electroremediation express in equation as Y= -0.099x + 11.49 for sand soil, Y= -0.037x + 10.43 for clay loam soil and Y= -0.056x + 11.04 for sandy loam soil. Equations express the TPH decline for 24hours treatment of enhanced electroremediation as Y= -0.187x + 11.17 for sand soil, Y= -0.154x + 10.59 for clay loam soil and Y= -0.039x + 11.05 for sandy loam soil.