Bioremediation of paddy field contaminated by liquid waste from textile industry in order to reduce chromium in soil and rice plant

Liquid wastes produced by the textile industry in the immersing and dyeing process are confirmed to contain chemicals and heavy metals which have toxic and hazardous properties. If the wastewater is used continuously, it will have a great deal heavy metal pollution on the rice field. Pollution of heavy metals such as Cr in paddy field areas has implications on the absorption of Cr in plant tissue therefore if it is consumed every day, it will have bad impacts to human being. Bioremediation is an alternative to treating toxicity of heavy metals to plants on the contaminated soils. The purpose of this study was to determine the effect of bioremediation on the use of chelator agent and its combination of Cr concentration in soil and rice plant. This research was conducted in Kaling, Tasikmadu, Karanganyar. This research used field experiment with factorial design and Complete Randomized Block Design (CRBD). The treatments in this research are: (1) Giving basic fertilizer N, P, K; (2) Giving isolates agrobacterium sp. I37 or compost fertilizer. The data then were analyzed statistically using ANOVA F (Fisher Test) test of 5% level and LSD (Least Significant Differences). The results of this research showed that the use of Agrobacterium sp. I37 as a chelator agent is able to decrease Cr in soil at a higher level than other treatment by 56,52% from 2,3 mg.kg−1 to 1 mg.kg−1. The use of Agrobacterium sp. I37 as a chelator agent is able to decrease Cr in rice grains by 88.87% from 6.65 mg.kg−1 to 0.74 mg.kg−1. By the treatment code P0B1 and P0B2, It can be concluded that it can be as a suggestion to decrease levels of Cr on the grain of the rice.Liquid wastes produced by the textile industry in the immersing and dyeing process are confirmed to contain chemicals and heavy metals which have toxic and hazardous properties. If the wastewater is used continuously, it will have a great deal heavy metal pollution on the rice field. Pollution of heavy metals such as Cr in paddy field areas has implications on the absorption of Cr in plant tissue therefore if it is consumed every day, it will have bad impacts to human being. Bioremediation is an alternative to treating toxicity of heavy metals to plants on the contaminated soils. The purpose of this study was to determine the effect of bioremediation on the use of chelator agent and its combination of Cr concentration in soil and rice plant. This research was conducted in Kaling, Tasikmadu, Karanganyar. This research used field experiment with factorial design and Complete Randomized Block Design (CRBD). The treatments in this research are: (1) Giving basic fertilizer N, P, K; (2) Giving isolates agrobact...