Bio-treatment of anaerobically treated swine wastewater (ADSW) mediated by microalgae has been deemed as a promising strategy. In the present study, six microalgal strains were used to conduct batch experiments in 0~100% ADSW in order to evaluate their potentials for nutrient removal and biodiesel production. Two strains, Chlorella vulgaris FACHB-8 and Chlorella sp. FACHB-31, were selected based on their better growth performances, higher tolerance to wastewater (up to 100%), and better nutrient removal abilities. The capacity of each strain to remove TN, TP, NH4+-N, as well as lipid production and biomass composition in 100% ADSW were further examined. After 15 days of culture, 87.68~89.85%, 92.61~93.68%, and 97.02~97.86% of the nitrogen, phosphorus, and ammonia nitrogen were removed by Chlorella sp. FACHB-31 and C. vulgaris FACHB-8. Their lipid content and lipid productivities were 29.63~33.33% and 18.91~23.10 mg L−1 d−1, respectively. Proteins were both the major biomass fraction followed by lipids and then carbohydrates. Their fatty acid profiles both mainly consisted of C-16:0, C-18:1, C-18:0, and C-18:2. Taken together, our results suggest that C. vulgaris FACHB-8 and Chlorella sp. FACHB-31 are potential candidates for biodiesel production by using ADSW as a good feedstock.

The consumption of pesticide residues contaminated shiitakes resulted in important health issues in humans. This study evaluated the effects of classic household processing on six different pesticides used in shiitake culture, detailed in pesticide residue behavior and processing factors (PFs). Our results demonstrated that stir‐frying or frying reduced the residue levels of all six pesticides. Washing and boiling significantly decreased the concentrations of carbendazim, thiabendazole, and procymidone. After each household processing step, the calculated PFs of all pesticides were less than one except for the 1–10 min boiling of bifenthrin, λ‐cyhalothrin, and β‐cyfluthrin. The most effective combination of processing to reduce the residue levels of carbendazim, thiabendazole, and procymidone in fresh shiitakes was washing for 10 min and then boiling for another 10 min. The best combination of processing to reduce the residue levels of bifenthrin, λ‐cyhalothrin, and β‐cyfluthrin was washing for 10 min and then frying for 60 s. Practical applications This study suggests that the residue concentrations of all six pesticides were decreased in shiitakes during household processing. Considering the results of pesticides’ residuals and processing factors, the typical household processing, including washing, boiling, frying, and rehydrating, were recommended to reduce the pesticide residuals. The combination to reduce carbendazim, thiabendazole, and procymidone residues in fresh shiitakes was 10 min washing and then another 10 min boiling. The suggested combination for bifenthrin, λ‐cyhalothrin, and β‐cyfluthrin was 10 min washing and then a 60 s frying.