Optimal decisions and Pareto improvement for green supply chain considering reciprocity and cost-sharing contract.

With the rapid development of green consumption demand, more and more consumers choose to purchase green products. Incorporating consumers' environmental awareness into a green supply chain, this paper studies the decisions and coordination of the green supply chain under the retailer's reciprocal preference. The decentralized models with and without reciprocity are constructed and analyzed with consideration of product green degree and pricing. Then, the cost-sharing joint commission contract is proposed to realize Pareto improvement. Finally, propositions and conclusions are verified by numerical simulation. The results indicate that improving consumers' environmental awareness is favorable to the profit of the whole supply chain and environment. Besides, within the reasonable range of retailer's reciprocal preference, higher value of the retailer's reciprocal preference is conductive to the better realization of environmental protection and the improvement of the economic welfare of the whole society. The cost-sharing contract exerts a positive effect in improving the environmental and economic performance in the green supply chain (GSC). The paper provides a theoretical foundation for the design of cooperative contracts in the GSC, especially the GSC with retailer's reciprocal preference.

Degradation of atrazine by a novel Fenton-like process and assessment the influence on the treated soil.

This is the premier study reporting the remediation of atrazine contaminated soil with steel converter slag (SCS) catalyzed Fenton-like process. The effects of various operating parameters, such as SCS loads and H2O2 concentrations were evaluated with respect to the removal efficiency of atrazine. Results show the optimal SCS load and H2O2 concentration were 80gkg(-1) and 10%, respectably. The graded modified Fenton's oxidation with a 3-time addition of 10% H2O2 was able to remove 93.7% of total atrazine in the contaminated soil and maintain soil temperature within 50°C. In contrast to traditional Fenton treatment, a slight pH increase has been observed due to the addition of SCS. More importantly, experiment conducted at natural conditions with SCS gave the similar atrazine removal to the experiments with the other catalysts (e.g., FeSO4 and Fe2O3). One thing should be noted that after the treatment, dissolved organic carbon (DOC) content increased to 1.206gkg(-1) from an initial value of 0.339gkg(-1).