摘要
Various human activities have led to multiple contamination of natural water systems.The present study investigated the effect of a novel multifunctional biochar to treat nutrients,oil,and harmful algae in water.Specifically,magnesium(Mg)and biosurfactant rhamnolipid(RL)were incorporated into biochar,including Mg-biochar,RL-biochar,and Mg-RL-biochar.Their adsorption efficiency on phosphate and total petroleum hydrocarbons(TPH)was evaluated in separate batch studies.Also,the inhibition effect of RL-modified biochars on cyanobacteria was investigated.The results showed that Mg-impregnated biochar showed high adsorption capacity on phosphate(118 mg g^(−1)),while RLmodified biochar significantly reduced TPH(especially aromatic and light aliphatic fraction)with adsorption capacity of 44.4 mg g^(−1).The inhibition effects of biochar composites on algae in water without contaminants were in order of Mg-RL-biochar>RL-biochar>biochar with biomass reduction ranging 61-64%.Overall,Mg-RL-biochar was suggested based on this study due to its ability to remove PO_(4)^(3)−and TPH,and inhibit the growth of toxic algae.
出处
《Biochar》
SCIE
CAS
CSCD
2023年第1期862-876,共15页
生物炭（英文）
基金
Yunnan Fundamental Research Projects(Grant#202201BE070001-043)
National Natural Science Foundation of China(Grant#41967039)
Yunnan Provincial Excellent Young Scientists Fund(Grant#202201AW070006)
Yunnan Foundation Research Projects(202301AU070074)。
