This study was investigated the efficiency of activated persulfate and ‎in-vessel composting for removal of total petroleum hydrocarbons. ‎Remediation by activated persulfate with ferrous sulfate as pre-treatment was done at batch system. In the chemical oxidation, various variables including persulfate concentrations (10-3000 mg/g as waste), ...

The compound 4-chlorophenol (4-CP) is known to be a highly toxic having harmful effects on human health and the environment. To date, removal of 4-CP by advanced oxidation processes (AOPs) has attracted tremendous attentions. persulfate-based AOPs show higher oxidation, better selectivity, wider pH range, no secondary pollution compared traditional Fenton-based AOPs. Carbon materials with low c...

Being thrombosis a complex process involving multiple pathways, drugs acting simultaneously as antioxidants and anticoagulants would be of value to prevent and treat this pathology. We have recently discovered a new class of sulfated polyphenols derivatives which exhibited both in vitro and in vivo antithrombotic activity. That these derivatives showed water solubility and no putative toxicity ...

Heat-activated persulfate was tested for destruction of polychlorinated dibenzo-p-dioxins/furans (PCDD/Fs) in the laboratory. Combined technology of in situ chemical oxidation (ISCO) and in situ thermal remediation (ISTR) using heat-activated persulfate can be applied for destruction of the PCDD/Fs polluted soil and the PCDD/Fs containing fly ash from incineration process. To explore the treata...

The impact of chemical on the native microbial population during in situ chemical oxidation (ISCO) is not well understood. As a result, some concerns exist within the remediation community as to the potential of negative impacts ISCO may have on bioremediation processes, especially its impact on down-gradient plume control via bioremediation and its impact on subsequent natural attenuation proc...

ENVIRONMENTAL APPLICATIONS OF PERSULFATE: REMEDIATION CONTAMINATED GROUNDWATER AND SOILS. Environmental remediation represents a major technological challenge due to the complexity of environmental matrices and high treatment cost. In recent years, in situ chemical oxidation technologies (ISCO) have shown good cost/benefit ratio, which as favored their use degradation several relevant pollutant...

Determination of total nitrogen in aqueous samples after potassium persulfate digestion compared favorably in both precision and nitrogen recovery with determinations obtained using Kjeldahl digestion. The determination of total nitrogen (TN = inorganic and organic fixed nitrogen) has largely depended either on acid Kjeldahl digestion ( cf. Strickland and Parsons 1972) or on photo-oxidation (Ar...

Zero-valent iron [Fe(0)]-biochar composites, namely, Fe(0)-included biochar and biochar-coated Fe(0), were synthesized their catalytic performance in the activation of persulfate for phenol degradation water was evaluated. In presence Fe(0)-biochar biochar-persulfate Fe(0)-persulfate systems showed higher removal than a system by 11.6% 20.7%, respectively. The difference between Fe(0) because h...

a new potassium persulfate redox system has been investigated for the graft polymerization of vinyl monomers. in this study potassium persulfate system was used for initiation the polymerization. graft polymerization of acrylonitrile (an) onto starch (sta) was carried out in aqueous solution using potassium persulfate (i) redox system. it was found that the percentage of grafting and rate of gr...

absorptive characteristics of polyaniline synthesized with two different oxidants including potassium iodate and ammonium persulfate was studied. synthesized polyanilines in powder shape is used as an adsorbent to remove toxic hexavalent chromium from aqueous solutions. experiments were conducted in batch mode with different variables such as agitation time, solution ph and initial concentratio...