Application of Cu/Mg/Al-chitosan-O3 system for landfill leachate treatment: Experimental and economic evaluation data

Landfill leachate contains heavy organic pollutants, which pollute ground and surface waters. This dataset applied a newly-introduced catalyst, Cu/Mg/Al-chitosan, for a landfill leachate treatment during a catalytic oxidation. The data of chemical oxygen demand (COD) and colour removal from the leachate was reported as a function of reaction time (20–460 min). Economic evaluation data of the Cu/Mg/Al-chitosan-O3 system showed that the current cost of the system for treating each m3 leachate is US$ 18 and for catalyst synthesis is US$ 54.5. Data could be useful from environmental and economic perspectives to those concerned about landfill leachate threats.


a b s t r a c t
Landfill leachate contains heavy organic pollutants, which pollute ground and surface waters. This dataset applied a newly-introduced catalyst, Cu/Mg/Al-chitosan, for a landfill leachate treatment during a catalytic oxidation. The data of chemical oxygen demand (COD) and colour removal from the leachate was reported as a function of reaction time (20-460 min). Economic evaluation data of the Cu/Mg/Al-chitosan-O 3 system showed that the current cost of the system for treating each m 3

Subject area
Chemical engineering More specific subject area

Environmental engineering; Wastewater treatment
Type of data Figure and table How data was acquired The landfill leachate pH was determined using a Jenway 3505 pH meter. The COD analysis was conducted using the potassium dichromate oxidation method.

Data format
Analysed Experimental factors -Cu/Mg/Al-chitosan particles were provided by the precipitation method.
-Landfill leachate sample was treated in a given reaction time as a function of COD and colour. -The kinetic of the leachate treatment was determined.
-The economic evaluation for Cu/Mg/Al-chitosan-O 3 was presented.

Experimental features
Landfill leachate treatment by Cu/Mg/Al-chitosan-O 3 system

Data accessibility Data presented with article
Value of the data A new catalytic process for landfill leachate treatment was introduced to the scientific community. From our data, it could be implied that the COD was decreased to discharge allowable limit to wastewater collection system, compared to biological leachate treatment systems.
Data shows that the Cu/Mg/Al-chitosan-O 3 system is an economic process for landfill leachate treatment.
Many organizations like waste management organizations, wastewater treatment plants, water resources management, NGOs, etc., which are concerned about the hazards from landfill leachate, can use these data.
1. Data Table 1 shows the characteristics of the raw leachates. Figs. 1 and 2 depict the COD and colour removal at different leachate pHs respectively as a function of time. Fig. 3 shows the pseudo first-  Table 2.

Landfill leachate sampling
Leachate samples of a municipal solid waste landfill were collected with 5 L-polyethylene bottles from Kahrizak, Tehran, Iran during the summer of 2015 and transferred in cooler boxes at a temperature below 5°C to the laboratory within 2 h. The landfill leachates were sampled from different leachate ponds with different pHs (9.5, 7, and 5.5). All samples were taken from the surface of leachates. Leachate samples were stored in a refrigerator at 4°C before tests. The physicochemical characteristics of the raw leachates are listed in Table 1.

Catalyst preparation
The catalyst in this dataset was Cu/Mg/Al-chitosan (CMA-chitosan), which was prepared by the precipitation method. Details about the preparation of the catalyst have been reported elsewhere [2,3].

Test procedure
A reactor with working volume of 300 mL, equipped with an ozone generator (Model 3S-A3, Tonglin Technology, Beijing), a sintered diffuser to evenly distribute the ozone stream to the landfill leachate, an air pump, KI solution as ozone off-gas destructor, valves, and tubing. The O 3 -generator capacity was 5 g/h. The O 3 flow rate was set to 3.5 mg/min throughout the experiments. About

Measurements
The landfill leachate pH was determined on site at the time of sampling, using a digital pH meter. The COD measurements were done using the potassium dichromate oxidation method [4]. Leachates BOD 5 was determined in accordance with the 5210-D test using manometric respirometry (OxiTop) [4]. A total organic carbon (TOC) analyser (Shimadzu Co.) was applied to determine TOC content of leachates. Other characteristics of the leachates were recorded in accordance with the standard methods for the examination of water and wastewater [4].